V.Ramkumar

Technical Officer Gr.I

         Email : vramkumar@iitm.ac.in       

Phone: (044) 2257 4244 / 5244

 

Academic profile

  • B.Sc. (Chemistry)
  • Post Graduate Diploma in Applied Chemistry
  • Diploma in Process Control and Chemical Instrumentation
  • Master of Computer Application
  • M.Sc. ( Chemistry)
  • Ph.D (undergoing under -Dr. Ramesh L Gardas)

    • Professional Experience:

  • Technical Assistant (June 1991)
  • Research Technologist ( in University of West Indies, Barbados from Jan 2002-Jun 2002)
  • Technical Superintendent (Jun 2004)
  • Technical Officer Gr. I (Till date)

    Training Experience:

    1. Single crystal Instrument (BRUKER KAPPA APEX II ) Training in Bruker AXS, Delft, Netherlands,.October 2007.
    2. National Workshop in Technique and Challenges for structure solution in Chemical crystallography, IIT Roorkee,Roorkee, Sep,2007.
    3. 20th Bruker Users Workshop Meeting in Single Crystal X-ray diffraction, Bad Herrenalb, Germany, Sep,2012.

    Operation and Maintenance of Single Crystal XRD instrument:

    Working in the field of single crystal X-Ray Diffraction on the state-of-the art Bruker Kappa APEX II with 4-circle technology since 2005 and responsible for its operation and maintenance.
    Underwent training in Bruker AXS, Delft, Netherlands in October 2007 as well as a specialized Bruker ApexII workshop in Bad Herrenalb, Germany, September 2012
    and became a certified APEX II user. Experience involves in structural determination of organic, inorganic, hybrid organic-inorganic material as well as organometallic molecules in addition to dealing with supra molecular systems which involved crystallographic disorder as well as twinning problems. This is followed by finalization of the structure and contribution in its publication as collaborative work.
    Crystallographic software knowledge:
    • Apex II (Bruker GmbH)
    • ShelXL package
    • PLATON software
    • WinGX software
    • Mercury visualization software
    • EnCifer publication software

    Lab Work:

    1. B.Tech Undergraduate Lab (CY1002)-Instructions to students and Lab arrangements.
    2. Preparatory Course - Lab arrangements.

    List of publications

    1983-1997

    1. "Circuit Idea", Supply failure Indicator,
         V.Ramkumar, Electronic For You, May (1983), 82.

    2. Synthesis and physicochemical properties of cobalt aluminium hydrotalcite,
        S.Kannan, S.Velu, V.Ramkumar and C.S.Swamy,
        Journal of Material Science, 30(1995), 1462-1468.

    3. Reaction of Piperidine with Formaldehyde over Alumina Catalysts,
        U.Kameswari, A.Narayanan, V.Ramkumar and Dorothy Samuel,
        Selected studies in Heterogenous Catalysis, May 1996.
        Edited by Dr.B.Viswanathan.

    4. Effect of interlayer anion on the Physicochemical properties of Zinc aluminium
        hydrotalcites
        S.Velu, V.Ramkumar, A.Narayanan and C.S.Swamy,
        Journal of Material Science, 32, (1997), 957.

    2005

    5. An Internal standardization procedure for Spectrally resolved Fluorescence Life Imaging
        Microscope (sFLIM).
        Quentin Hanley and V.Ramkumar
        Applied Spectroscopy, 59 [2] 261-266, (2005).

    2007

    6. 1-[(2,5-Dioxopyrrolidin-1-yl)(phenyl)methyl]urea.
        S. Rajeswari, G. Venkatesa Prabhu, K. Krishnakumar, V. Ramkumar & B. Varghese,
       Acta Cryst. E63, o2929, (2007).

    7. 6-Methoxy-1'-methyl-4'-phenylchroman-3-spiro-3'-pyrrolidine-2'-spiro-3''(2''H)- indole-2'',4-dione.
       T. Augustine, C. C. Kanakam, R. Suresh, Y. Christurajan & V. Ramkumar
       Acta Cryst. E63, o3794, (2007).

    8. 6''-Methoxy-1'-methyl-4'-phenylacenaphthene-1-spiro-2'-pyrrolidine-3'-spiro-3''-chroman-2,4''-dione.
       T. Augustine, V. Ramkumar, S. Arul Antony & C. C. Kanakam
        Acta Cryst. E63, o4412, (2007).

    9. cis-Bis(benzylmethylphenylphosphine- P)tetracarbonylmolybdenum(0)
       A.Doddi, T. A. Luiz, V. Ramkumar & M. N. S. Rao
       Acta Cryst. E63, m2727, (2007).

    10. r-2,c-6-Bis(4-bromophenyl)-t-3,t-5-dimethyltetrahydropyran-4-one.
         P. Parthiban, S. Umamatheswari, A. Doddi, V. Ramkumar & S. Kabilan,
         Acta Cryst. E63, o4373, (2007).

    11. r-2,c-6-Bis(3-fluorophenyl)-t-3,t-5-dimethylpiperidin-4-one.
         R. Ramachandran, P. Parthiban, A. Doddi, V. Ramkumar & S. Kabilan,
        Acta Cryst. E63, o4559, (2007).

    12. 1'-Methyl-4'-phenylacenaphthene-1-spiro-2'-pyrrolidine-3'-spiro-3''-
          benzo[ g]chroman-2,4''-dione
          T. Augustine, V. Ramkumar and Charles C. Kanakam
         Acta Cryst. E63, o4717, (2007).

    2008

    13. 2,4-Bis(2-chlorophenyl)-3-azabicyclo[3.3.1]nonan-9-one
           P.Parthiban, V.Ramkumar, M.S.Kim, K.T.Lim and Y.T.Jeong
           Acta Cryst. E64, o1586, (2008).

    14. r-2,c-6-Bis(3-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one
          P.Parthiban, V.Ramkumar, N.A.Kumar, J.S.Kim and Y.T.Jeong
          Acta Cryst. E64, o1631, (2008).

    15. 2,4-Bis(3-fluorophenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P.Parthiban, K. Thirumurugan, V.Ramkumar, S.Pazhamalai and Y.T.Jeong
          Acta Cryst. E64, o1708-o1709, (2008).

    16. 2,4-Bis(4-fluorophenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P.Parthiban, V.Ramkumar, H.D.Santan, J.T.Kim and Y.T.Jeong
          Acta Cryst. E64, o1710, (2008).

    17. 6-Formyl-2-methoxy-3-nitrophenyl 4-toluenesulfonate
          G. Ramachandran, R. Suresh, S. Sreedevi, Charles C Kanakam and V.Ramkumar
          Acta Cryst.. E64, o2046, (2008)

    18. 3-Benzylidene-6-methoxychroman-4-one
          T. Augustine, Scholastica Mary Vithiya, V. Ramkumar and Charles C.Kanakam
          Acta Cryst. E64, o2080, (2008).

    19. 2,4-Bis(3-bromophenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P.Parthiban, V.Ramkumar, M.S.Kim, K.T.Lim and Y.T.Jeong
          Acta Cryst. E64, o2332, (2008).

    20. 2,4-Bis(2-bromophenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P.Parthiban, V.Ramkumar, M.S.Kim, K.T.Lim and Y.T.Jeong
          Acta Cryst. E64, o2385, (2008).

    2009

    21. Spectroscopic studies and crystal structure of 1-[(2,5-dioxopyrrolidin-1-yl)(phenyl) methyl] thio urea
          Rajeswari S, Venkatesa Prabhu G, Tamilvendan D, V.Ramkumar
          Journal of Chemical Crystallography, 39, 650–654, (2009).

    22. Substitution at Boron in Molybdaborane Frameworks: Synthesis and Characterization of Isomeric (h5-C5Me5Mo)2B5HnXm
          (when X = Cl: n = 5, 7, 8; m = 4, 2, 1 and X = Me: n = 6, 7; m = 3, 2)
          Rajendra S Dhayal, Satyanarayan Sahoo, V Ramkumar and Sundargopal Ghosh.
          Journal of Organometallic Chemistry, 694, 237–243, (2009) .

    23. N-[Morpholino(phenyl)methyl]benzamide
          L. Muruganandam, S. Rajeswari, D. Tamilvendan, V. Ramkumar and G. V. Prabhu
          Acta Cryst. E65, o578, (2009).

    24. 2,4-Bis(4-chlorophenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P. Parthiban, V. Ramkumar, M. S. Kim, S. Kabilan and Y. T. Jeong
          Acta Cryst. E65, o609, (2009).

    25. 2,4-Bis(3-chlorophenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar, H. D. Santan, J. T. Kim & Y. T. Jeong
          Acta Cryst. E65, o840,(2009)..

    26. 2,4-Bis(2-methoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P. Parthiban, V. Ramkumar, M. S. Kim, S. M. Son & Y. T. Jeong
          Acta Cryst. E65, o1383,(2009).

    27. 2,4-Bis(4-bromophenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar, S. Amirthaganesan & Y. T. Jeong
          Acta Cryst. E65, o1356,(2009)..

    28. Synthesis, spectral, crystal and antimicrobial studies of biologically potent oxime ethers of nitrogen,
          oxygen and sulfur heterocycles
          Paramasivam Parthiban, Gopalakrishnan Aridoss, Paramasivam Rathika, Venkatachalam Ramkumar,
          Senthamaraikannan Kabilan.
          Bioorganic & Medicinal Chemistry Letters, 19, 2981–2985, (2009).

    29.  An Efficient Route to Group 6 and 8 Metallaborane Compounds: Synthesis of arachno-
          [Cp*Fe(CO)B3H8] and closo-[(Cp*M)2B5H9] (M = Mo, W).
          Geetharani, K.; Bose, S. K.; Pramanik, G., Saha, T. K.; Ramkumar, V.; Ghosh, Sundargopal
          Euro. J. Inorg. Chem., 11, 1483-1487, ( 2009).

    30. B-Alkylation and Arylation of (ç5-C5Me5Mo)2B5H9: Synthesis and Characterization of Isomeric
          (e5-C5Me5Mo)2B5H9-nRn (When R = n-Bu, n = 2, 1; R = Ph, n = 2, 1):
          Dhayal, R. S., Chakrahari, K. K. V., Ramkumar, V., Ghosh, Sundargopal
          J. Cluster Sci. 20, 565 –572, (2009).

    31.Chlorinated Hypoelectronic Dimetallaborane Clusters: Synthesis, Characterization and Electronic Structures of
          (5-C5Me5W)2B5HnClm (n = 7, m = 2 and n = 8, m = 1):
          Sahoo, S., Reddy. K. H. K., Dhayal, R. S., Mobin, S. K., Ramkumar, V., Jemmis, E. D., Ghosh, Sundargopal
          Inorg. Chem., 48 (14), 6509–6516, (2009).

    32. New Aryloxy and Benzyloxy Derivatives of Titanium as Catalysts for Bulk Ring-Opening Polymerization of -Caprolactone
          and -Valerolactone
           Ravikumar R. Gowda, Debashis Chakraborty, Venkatachalam Ramkumar
           Euro. J. Inorg. Chem., 20, 2981-2993, ( 2009).

    33. 2,4-Bis(2-fluorophenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst. E65, o1596, (2009).

    34. 1-Methyl-2,4-Bis(2-methoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst. E65, o3103, (2009).

    35. A facile entry into a novel class of dispiroheterocyclic framework through 1, 3-dipolarcycloaddition of azomethine
          ylides with 3-arylidene-4-chromanones as dipolarophiles.
          Augustine A.P.T., Charles C Kanakam., Scholastica Mary vithiya., V.Ramkumar
          Tetrahedron Letters , 50, 5906-5909, (2009).

    36. A new synthetic route to Lindqvist type clusters [(n-Bu4N)x][M'M5O19] [when x = 2, M'= M = Mo or W; x = 3, M'= Mo, M = W]
          from metal carbonyl precursors [(CO)5ML] [M = Mo, W; L= CO, C(OMe)(Me)]
          Thakur, A., Chakraborty, A., Ramkumar, V., Ghosh, Sundargopal .
          Dalton Trans., (36), 7552-7558, (2009).

    37. As many as six tandem reactions in one step! Unprecedented formation of highly functionalized benzothiophenes
          Pushparathinam Gopinath , Surapaneni Nilaya , Tripathy Ranjan Debi , Venkatachalam Ramkumar and Kannoth Manheri Muraleedharan
          Chem. Commun., (46), 7131-7133, (2009).

    38. Synthesis, stereochemistry and antimicrobial studies of novel oxime ethers of aza/diazabicycles
          Paramasivam Parthiban, Gopalakrishnan Aridoss, Paramasivam Rathika, Venkatachalam Ramkumar, Senthamaraikannan Kabilan
          Bioorganic & Medicinal Chemistry Letters, 19, 6981-6985, (2009).

    39. Fine-Tunning of Metalloborane Geometries: Chemistry of Metallaboranes of Early Transistion Metalsderived from Metal halides and Monoborane reagents.
          Bose, S.K.; Geetharani, K; Ramkumar.V.; Mobin, S,K; Ghosh, Sundargopal.
          Chem. Eur. J., 15, 13483-13490, (2009).

    2010

    40. Stereospecific synthesisof oximes and oxime ethers of 3-azabicycles:A SAR study towards antimicrobial agents.
          Paramasivam Parthiban, Paramasivam Rathika, Venkatachalam Ramkumar, Se Mo Son, Yen Tae Jeong
          Bioorganic & Medicinal Chemistry Letters, 20(5), 1642-1647, (2010).

    41. 2,4-Bis(3-methoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst. E66, o48-o49, (2010).

    42. 2,4-Bis(4-chlorophenyl)-1-methyl-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst. E66, o545, (2010).

    43. 2,4-Bis(2-fluorophenyl)-1-methyl-3-azabicyclo[3.3.1]nonan-9-one.
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst. E66, o194-o195, (2010).

    44. Chemistry of Vanadaboranes: Synthesis, Structures and Charanterization of Organ vanadium Sulfide Clusters with Disulfido linkage.
          Bose, S.K.; Geetharani, K; Ramkumar.V.; Varghese B; Ghosh, Sundargopal.
          Inorg.Chem, 2010, 49(6), 2881-2888, (2010).

    45. Spectroscopic studies and crystal structure of 1-(morpholino (phenyl) methyl ) pyrrolidine-2,5-dione.
          Rajeswari S; Venkatesa Prabhu G; Tamilvendan D; V.Ramkumar
          Journal of Chemical Crystallography, 40(5), 437- 442, (2010).

    46. Trans – ß2,3-amino acid-based supramolecular synthons for probing the interrelationships between structures, torsion-directed assembly and isomorphism.
          Balamurugan, D., Ramkumar, V., Muraleedharan, K.M.
          Crystal Growth and Design, 10(6), 2460-2464, (2010).

    47. Bis(imino)phenoxide complexes of zirconium: Synthesis, structural characterization and solvent -free ring-opening polymerization of cyclic esters and lactides.
          Saha, T.K., Rajashekhar, B., Gowda, R.R., Ramkumar, V., Chakraborty, D.
          Dalton Transactions, 39(21), 5091-5093, (2010).

    48. New Phosphoroamidate compounds: Synthesis, structural characterization and studies of ZnCl2 assisted hydrolysis of the P-N bond.
          Malik, P., Chakraborty, D., Ramkumar, V.
          Polyhedron, 29, 2142-2148, (2010).

    49. (N1E,N2E)-N1,N2-Bis(4-hexyloxy-3-methoxybenzylidene)ethane-1,2-diamine.
          Paul, S. S. Punnoose, N. L. Mary, T. Narasimhaswamy & V. Ramkumar
          Acta Cryst. E66, o1377. (2010).

    50. 2-Oxo-4-trifluoromethyl-2H-chromen-7-yl 2-bromo-2-methylpropanoate.
          N. Haridharan, V. Ramkumar & R. Dhamodharan.
          Acta Cryst. E66, o1606, (2010).

    51. Triethylammonium 1,1'-binaphthyl-2,2'-diyl phosphate.
          R. R. Gowda, V. Ramkumar & D. Chakraborty .
          Acta Cryst. E66, o1625, (2010).

    52. 2,4,6-Trimethyl-3,5-bis[(phenylcarbonothioyl)sulfanylmethyl]benzyl benzenecarbodithioate.
          M. Kannan, V. Ramkumar & R. Dhamodharan
          Acta Cryst. E66, o1382, (2010).

    53. Coordination driven self-assembly in a single pot
          Niladri B. Debata, Debakanta Tripathy, V. Ramkumar, Dillip Kumar Chand
          Tetrahedron Letters, 51, (33), 4449-4451, (2010).

    54. Aryloxy and benzyloxy compounds of hafnium: Synthesis, structural characterization and studies on solvent-free
          ring-opening polymerization of e-caprolactone and d-valerolactone.
          Ravikumar R. Gowda, Debashis Chakraborty, Venkatachalam Ramkumar
          Polymer 51 (2010) 4750-4759.

    55. Stereocontrolled facile synthesis and antimicrobial activity of oximes and oxime ethers of diversely substituted bispidines
          Paramasivam Parthiban, Senthamaraikannan Kabilan, Venkatachalam Ramkumar, Yeon Tae Jeong
          Bioorganic & Medicinal Chemistry Letters, 20,( 22), 6452-6458, (2010).

    56. Exploration of Novel Pyrene Labeled Amphiphilic Block Copolymers: Synthesis Via ATRP, Characterization and Properties
          Neelamegan Haridharan, Venkatachalam Ramkumar, Raghavachari Dhamodharan
          Journal of Macromolecular Science, Part A, 47, 9, 918 - 926 (2010).

    57. 2-Bromo-2-methyl-N-(4-methyl-2-oxo-2H-chromen-7-yl)propanamide
          N. Haridharan, V. Ramkumar and R. Dhamodharan
          Acta Cryst. E66, o2007, (2010).

    58. 3-Benzoyl-1-methyl-4-phenylspiro-[acenaphthylene-1(2H),2-pyrrolidin]-2- one.
          T.Augustine, Scholastica Mary Vithiya, S. Ignacimuthu & V. Ramkumar
          Acta Cryst. E66, o3002, (2010).

    59. 2,4-Bis(2-methylphenyl)-3-azabicyclo-[3.3.1]nonan-9-one O-methyloxime.
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst. E66, o2978, (2010).

    60. Multi-chelation approach towards natural product-like skeletons: one-pot access to a nitrogen-containing tetracyclic framework from AlaAla dipeptide
          Kasipandi Vellaisamy, John Victor Napoleon, Ramkumar Venkatachalam and Muraleedharan Kannoth Manheri
          Chem. Commun., 2010, 46, 9212-9214

    61. p-Tolylmethanaminium cyclohexane-1,2-diyl phosphate
          Ravikumar R Gowda, Venkatachalam Ramkumar and Debashis Chakraborty
          Acta Cryst. E66(12), o3049, (2010)

    2011

    62. Synthesis and Molecular Structure of Sulfur Containing Cobalt Compounds
          Vaibhave Aggarwal, V. Ram Kumar and Udai P. Singh
          Journal of Chemical Crystallography,2011, 41 (2), 121-126.

    63. Aryloxy and benzyloxy compounds of zirconium: synthesis, structural characterization and studies on solvent-free ring
          opening polymerization of e-caprolactone and d-valerolactone.
          Ravikumar R. Gowda, Debashis Chakraborty, Venkatachalam Ramkumar
          Journal of Organometallic Chemistry,2011, 696(2), 572-580.

    64. 2,4-Bis(2-ethoxyphenyl)-7-methyl-3-azabicyclo[3.3.1]nonan-9-one
          P. Parthiban, V. Ramkumar, Dong Ho Park & Y. T. Jeong
          Acta Cryst. E67(6), o1475-o1476, (2011).

    65. Phosphoroamidate compounds of 1,1'-Bi-2-naphthol: Synthesis, structural characterization and
          solvent-free ring-opening polymerization of e-caprolactone and L-lactide
          Ravikumar R. Gowda, Debashis Chakraborty, Venkatachalam Ramkumar
          Inorganica Chimica Acta (2011), 372(1), 88-93.

    66. A model study of alternative approach toward a class of palladium(II) based self-assembly
          Niladri B. Debata, V. Ramkumar & Dillip Kumar Chand
          Inorganica Chimica Acta (2011), 372(1), 71-78.

    67. 2,4-Bis(4-propoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst.E67(4), o790, (2011).

    68. Salen Complexes of Zirconium and Hafnium: Synthesis, Structural Characterization, Controlled Hydrolysis, and
          Solvent-Free Ring-Opening Polymerization of Cyclic Esters and Lactides
          Tanmoy kumar saha,Venkatachalam Ramkumar & Debashis Chakraborty,
          Inorganic Chemistry (2011), 50(7), 2720-2722.

    69. 2,4-Bis(4-butoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one
          P. Parthiban, V. Ramkumar & Y. T. Jeong
          Acta Cryst., E67(3), o635, (2011).

    70. Synthesis and Structure of 1,4-Diphenyl-3-methyl-1,2,3-triazol-5-ylidene Palladium Complexes and
          Application in Catalytic Hydroarylation of Alkynes
          Rajendran  Saravanakumar, Venkatachalam Ramkumar & Sethuraman Sankararaman
         Organometallics (2011), 30(6), 1689-1694.

    71. 3-(9H-Carbazol-9-yl)propan-1-ol
          N.Haridharan, V. Ramkumar & R.Dhamodharan
          Acta Cryst., E67(1), o180, (2011).

    72. New Chiral Molybdenum Complex Catalyzed Sulfide Oxidation with Hydrogen Peroxide
          Rajan Deepan Chakravarthy, Kotapati Suresh, Venkatachalam Ramkumar & Dillip Kumar Chand
          Inorganica Chimica Acta (2011), 376 (1), 57-63.

    73. Synthesis, Structure and Characterization of Dimolybdaheteroboranes
          Rajendra Singh Dhayal, V. Ramkumar, Sundargopal Ghosh
         Polyhedron, (2011), 30 (12), 2062-2066.

    74. Controlled Hydrolysis of [Ti(O–2,4,6-Br3C6H2)2(O-iPr)2]2: synthesis, structural characterization and studies on bulk
          polymerization of cyclic esters and lactide.
          Ravikumar R. Gowda, Debashis Chakraborty, Venkatachalam Ramkumar
          Inorg. Chem. Communn., (2011), 14, 1777-1782.

    75. 1,1'-binaphthyl-2,2'-diyl benzylphosphoramidate
         Ravikumar R Gowda, Venkatachalam Ramkumar and Debashis Chakraborty
          Acta Cryst., E67(12), o3310, (2011).

    2012

    76. 2,4-Bis(4-ethoxyphenyl)-1-methyl-3-azabicyclo[3.3.1]nonan-9-one.
          D. H. Park, V. Ramkumar & P. Parthiban
          Acta Cryst. E68, o2999. (2012)

    77. 2,4-Bis(4-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one.
           D. H. Park, V. Ramkumar & P. Parthiban .
          Acta Cryst. E68, o2841. (2012)

    78. 2,4-Bis(2-bromophenyl)-7-tert-pentyl-3-azabicyclo[3.3.1]nonan-9-one.
          D. H. Park, V. Ramkumar & P. Parthiban .
          Acta Cryst. E68, o2946. (2012)

    79. 2,4,6,8-Tetrakis(4-chlorophenyl)-3,7-diazabicyclo[3.3.1]nonan-9-one O-benzyloxime acetone monosolvate.
          D. H. Park, V. Ramkumar & P. Parthiban.
          Acta Cryst. E68, o1481. (2012)

    80. 2,4-Bis(4-ethoxyphenyl)-7-methyl-3-azabicyclo[3.3.1]nonan-9-one.
          D. H. Park, V. Ramkumar & P. Parthiban.
          Acta Cryst. E68, o779-o780. (2012).

    81. N,N'-(1,4-Phenylene)bis(2-bromo-2-methylpropanamide).
          N. Haridharan, V. Ramkumar & R. Dhamodharan .
          Acta Cryst. E68, o811. (2012).

    82. 2,6-Bis(4-chlorophenyl)-1,3-dimethylpiperidin-4-one O-benzyloxime.
          D. H. Park, V. Ramkumar & P. Parthiban .
          Acta Cryst. E68, o525. (2012.)

    83. 2,6-Bis(4-methoxyphenyl)-1,3-dimethylpiperidin-4-one O-benzyloxime.
          D. H. Park, V. Ramkumar & P. Parthiban
          Acta Cryst. E68, o524. (2012).

    84. Consequence of Presence and Absence of �-Clouds at Strategic Locations of Designed Binuclear Pd(II) Complexes on Packing:
          Self-Assembly of Self-Assembly by Intermolecular Locking and Packing.
          Naranthatta, Mili C.; Das, Deepika; Tripathy, Debakanta; Sahoo, Himansu S.; Ramkumar, Venkatachalam; Chand, Dillip K.Crystal
          Growth & Design, 12 (12), 2012. 6012-6022

    85. Synthesis and Structure of Dirhodium Analogue of Octaborane-12 and Decaborane-14.
          Roy; Bose, Shubhankar Kumar; Anju, R. S.; Ramkumar, V.; Ghosh, Sundargopal.
          Inorganic Chemistry, 51(20), 2012. 10715-10722.

    86. 2,4,6,8-Tetrakis(4-chlorophenyl)-3,7-diazabicyclo[3.3.1]nonan-9-one O-benzyloxime acetone monosolvate.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst. E 68, o1481-o1481, ( 2012).

    87. A close-packed boron-rich 11-vertex molybdaborane with novel geometry.
         Chakrahari, Kiran Kumar Varma; Thakur, Arunabha; Mondal, Bijan; Dhayal, Rajendra Singh; Ramkumar, V.; Ghosh, Sundargopal.
         Journal of Organometallic Chemistry, 710, 2012. 75-79.

    88. N, N'-(1,4-Phenylene)bis(2-bromo-2-methylpropanamide).
          Haridharan, N.; Ramkumar, V.; Dhamodharan, R.
          Acta Cryst, E 68, o811.(2012).

    89. 2,4-Bis(4-ethoxyphenyl)-7-methyl-3-azabicyclo[3.3.1]nonan-9-one.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst, E 68 o779-o780, (2012).

    90. Novel Class of Heterometallic Cubane and Boride Clusters Containing Heavier Group 16 Elements.
          Thakur, Arunabha; Sao, Soumik; Ramkumar,V.; Ghosh, Sundargopal.
          Inorganic Chemistry 51 (15), 2012. 8322-8330

    91. 2,4-Bis(2-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Crysta, E 68, o3282,(2012).

    92. Synthesis and Characterization of Novel Ruthenaferracarboranes from Photoinsertion of Alkynes into a Ruthenaferraborane.
          Geetharani, K.; Ramkumar, V.; Ghosh, Sundargopal.
          Organometallics,(2012), 31, 6381-6387.

    93. Synthesis and Characterization of Dianionic Hexacoordinate Silicon (IV) Complexes of Substituted Catechols, Flavones, and Fluorone:
          X-Ray Crystal Structures of [(n-C3H7) 2NH2] 2 [(Cl4C6O2) 3Si]• 3 CH3CN and [(n-C3H7) 2NH2] 2 [(Br4C6O2) 3Si]• 2 (CH3) 2SO
          A Doddi, JV Kingston, V Ramkumar, M Suzuki, M Hojo, MNS Rao
          Phosphorus, Sulfur, and Silicon and the Related Elements (2012), 187 (3), 343-356.

    94. Novel Class of Heterometallic Cubane and Boride Clusters Containing Heavier Group 16 Elements.
          Thakur, Arunabha; Sao, Soumik; Ramkumar, V.; Ghosh, Sundargopal.
           Inorganic Chemistry 2012, 51, 8322-8330.

    95. 2,4-Bis(4-ethoxyphenyl)-1-methyl-3-azabicyclo[3.3.1]nonan-9-one.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst., E 68, o2999, (2012).

    96. 2,4-Bis(4-ethoxyphenyl)-3-azabicyclo[3.3.1]nonan-9-one.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst., E 68, o2841(2012)

    97. 2,4-Bis(2-bromophenyl)-7- tert-pentyl-3-azabicyclo[3.3.1]nonan-9-one.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst., E 68, o2946, (2012).

    98. 2,6-Bis(4-chlorophenyl)-1,3-dimethylpiperidin-4-one O-benzyloxime.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst., E 68, o525, (2012).

    99. 2,6-Bis(4-methoxyphenyl)-1,3-dimethylpiperidin-4-one O-benzyloxime.
          Park, Dong Ho; Ramkumar, V.; Parthiban, P.
          Acta Cryst., E 68, o524, (2012).

    2013

    100. Toppled Molecular Domino Sets by Self-Assembly of Self-assembly: The p-Polymers
            D Tripathy, V Ramkumar, DK Chand
            Crystal Growth & Design 2013, 13(8), 3763-3772.

    101. Hypoelectronic Dimetallaheteroboranes of Group 6 Transition Metals Containing Heavier Chalcogen Elements
            KK Chakrahari, A Thakur, B Mondal, V Ramkumar, S Ghosh
           Inorganic Chemistry, (2013) 52 (14), 7923-7932.

    102. 1, 3-Bis (2-methylprop-2-enoyl)-1H-benzimidazol-2 (3H)-one
            N Haridharan, V Ramkumar
           Acta Cryst, E 69 (6), o818 (2013).

    103. Chemistry of Homo-and Heterometallic Bridged-Borylene Complexes
            K Yuvaraj, DK Roy, K Geetharani, B Mondal, VP Anju, P Shankhari, V Ramkumar, S Ghosh.
            Organometallics, (2013), 32 (9), 2705-2712.

    104. Synthesis and structure of trans-bis (1, 4-dimesityl-3-methyl-1, 2, 3-triazol-5-ylidene) palladium (II) dichloride and diacetate.
            Suzuki–Miyaura coupling of polybromoarenes with high catalytic turnover efficiencies
            JB Shaik, V Ramkumar, B Varghese, S Sankararaman
            Beilstein journal of organic chemistry, (2013), 9 (1), 698-704.

    105. Synthesis and Structural Characterization of cis Isomer of 1, 2, 3-Triazol-5-ylidene based Palladium Complexes
            R Saravanakumar, V Ramkumar, S Sankararaman
            Journal of Organometallic Chemistry, (2013), 736, 36-41.

    106. .Boron Beyond the Icosahedral Barrier: A 16-Vertex Metallaborane
            Roy, Dipak Kumar; Bose, Shubhankar Kumar; Anju, R. S.; Mondal, Bijan; Ramkumar, V.; Ghosh, Sundargopal.
            Angewandte Chemie International Edition, (2013), 52 (11), 3222-3226.

    107. (1E, 4E)-1, 5-Bis [2-(trifluoromethyl) phenyl] penta-1, 4-dien-3-one
            DH Park, V Ramkumar, P Parthiban
            Acta Cryst., E 69 (2), o177 (2013)

    108. 2, 4, 6, 8-Tetrakis (2-fluorophenyl)-3, 7-diazabicyclo [3.3. 1] nonan-9-one
            DH Park, V Ramkumar, P Parthiban
            Acta Cryst., E 69 (2), o179 (2013)

    109. Imino phenoxide complexes of group 4 metals: synthesis, structural characterization and polymerization studies
            TK Saha, M Mandal, D Chakraborty, V Ramkumar
           New Journal of Chemistry, (2013) 37 (4), 949-960.

    110. Imino phenoxide complexes of niobium and tantalum as catalysts for the polymerization of lactides, a-caprolactone and ethylene.
             Saha, Tanmoy Kumar; Mandal, Mrinmay; Thunga, Madhubabu; Chakraborty, Debashis; Ramkumar, Venkatachalam.
            Dalton Transactions. (2013). 42(28), 10304-10314.

    111. Synthesis and characterization of N-phenyl pyrrole anchored to Fischer carbene complex through ring closing metathesis oxidative aromatization
            and various aryl substituted Fischer carbene complexes.
            R Ganesamoorthi, A Thakur, D Sharmila, V Ramkumar, S Ghosh
            Journal of Organometallic Chemistry (2013). 726(15), 56-61.

    112. An Early-Late Transition Metal Hybrid Analog of Hexaborane(12):
            R. S. Anju, D. K. Roy, B. Mondal, V. Ramkumar, S. Ghosh,
            Organometallics., 2013, 32, 4618-4623.

    113. Chemistry of Homo and Heterometallic Bridged-Borylene Complexes:
            K. Yuvaraj, D. K. Roy, K. Geetharani, B. Mondal, V. P. Anju, P. Shankhari, V. Ramkumar, S. Ghosh,
            Organometallics., 2013, 32, 2705-2712.

    114. Hypoelectronic Dimetallaheteroboranes of Group 6 Transition Metals Containing Heavier Chalcogen Elements:
            K. K V.Chakrahari, A.Thakur, B.Mondal, V.Ramkumar, S.Ghosh,
            Inorg. Chem., 2013, 52, 7923-7932.

    115. 2,2'-{[(1E,1'E)-(Cyclohexane-1,4-diyl)bis(azanylylidene)]bis(ethan-1-yl-1-ylidene)}diphenol.
            S. H. A. Lakshmi, M. Kandaswamy & V. Ramkumar.
            Acta Cryst. E69, o1593. (2013)

    116. [mu]-(2,6-Bis{[3-(dimethylamino)propyl]iminomethyl}-4-methylphenolato)-[mu]-hydroxido-bis[(thiocyanato-[kappa]N)copper(II)].
             M. G. Meera, P. K. Selvaraj, B. Viswanathan & V. Ramkumar .
            Acta Cryst. E69, m542-543, (2013).

    117. Ethyl 2-amino-4-(4-methyl-1,3-thiazol-5-yl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate.
             V. Karthikeyan, V. Ramkumar & R. J. Karunakaran.
             Acta Cryst. E69, o1411-o1412. (2013).

    118. 2-[(E)-2-(4-Methoxyphenyl) ethenyl]-1-methylpyridinium iodide
            K Senthil, S Kalainathan, A RubanKumar, V. Ramkumar, J Podder
            Acta Cryst. E 69, o1848-o1848. (2013)

    119. Synthesis and structural characterization of cis isomer of 1, 2, 3-triazol-5-ylidene based palladium complexes
             R. Saravanakumar, V. Ramkumar, S. Sankararaman
             Journal of Organometallic Chemistry 736, 36-41 (2013).

    120. Group IV complexes containing the benzotriazole phenoxide ligand as catalysts for the ring-opening polymerization of lactides,
            epoxides and as precatalysts for the polymerization of ethylene
             S. Pappuru, E.R. Chokkapu, D. Chakraborty, V. Ramkumar.
             Dalton Transactions 42 (46), 16412-16427. (2013).

    121. Coordination polymers via self-assembly of silver (i) and cis-bis-nitrile-oxa-bowl derivatives
            P. Niranjana, A. Pati, S.K. Porwal, V. Ramkumar, S.J. Gharpure, D.K. Chand
           CrystEngComm 15 (45), 9623-9633. (2013)

    • 2014

    122. Effect of distal sugars and interglycosidic linkage on the N-glycoprotein linkage region conformation: synthesis and
            X-Ray crystallographic investigation of ß-1-N-alkanamide derivatives of cellobiose and maltose as disaccharide analogs of the conserved chitobiosylasparagine linkage
            M Mathiselvam, V.Ramkumar, D Loganathan, S Pérez
             Glycoconjugate journal 31 (1), 71-87 (2014).

    123. A molybdenum based metallomicellar catalyst for controlled and selective sulfoxidation reactions in aqueous medium.
             R Deepan Chakravarthy, V.Ramkumar and D Kumar Chand.
             Green Chemistry 16 (4), 2190-2196. (2014).

    124. Palladium (ii) induced complete conformational enrichment of the syn isomer of N, N'-bis (4-pyridylformyl) piperazine
            D Tripathy, H.S Sahoo, V.Ramkumar, D.K Chand
             RSC Advances 4 (36), 18595-18599. (2014).

    125. Efficient and versatile catalysis of N-alkylation of heterocyclic amines with alcohols and one-pot synthesis of 2-aryl
            substituted benzazoles with newly designed ruthenium (ii) complexes of PNS thiosemicarbazones
             R Ramachandran, G Prakash, S Selvamurugan, P Viswanathamurthi, Jan Grzegorz Malecki and V.Ramkumar
             Dalton Transactions 43 (21), 7889-7902. (2014).

    126. Regioselective opening of unsymmetrical cyclic anhydrides: synthesis of N-glycosylated isoasparagine and isoglutamine conjugates
            L Sahoo, A Singhamahapatra, V.Ramkumar, D Loganathan
            RSC Advances 4 (42), 22042-22047. (2014).

    127. Substituent effect on the formation of helical to layered hydrogen bond networks in hydroxyl and carboxyl substituted 1-aryl-1 H-1, 2, 3-triazoles.
             B Sureshbabu, V.Ramkumar, S Sankararaman
             CrystEngComm, 16, 6098-6106. (2014).

    128. Two dimensional polydodecameric water-chloride cluster enfolding (Hg-Cl-Hg)+ concealed cascade cryptate
            A Pati, J Athilakshmi, V.Ramkumar, DK Chand
            CrystEngComm,16, 6827-6830. (2014).

    129. Facile base-free in situ generation and palladation of mesoionic and normal N-heterocyclic carbenes at ambient conditions
             B Sureshbabu, V.Ramkumar, S Sankararaman
             Dalton Trans., 43, 10710-10712 (2014).

    130. One-pot synthesis of self-assembled heteroleptic palladium (II) complexes with tmeda: An application of ligand exchange reactions
            S Bandi, NB Debata, V.Ramkumar, DK Chand
             Inorganic Chemistry Communications 39, 75-78. (2014).

    131. Metallaboranes from Metal Carbonyl Compounds and Their Utilization as Catalysts for Alkyne Cyclotrimerization.
            V.P Anju, S.K Barik, B Mondal, V.Ramkumar, S Ghosh
             ChemPlusChem 79 (4), 546-551. (2014).

    132. 1'-Allyl-1-(3, 4-dimethylbenzoyl)-2-(4-methyl-1, 3-thiazol-5-yl)-1, 2, 5, 6, 7, 7a-hexahydrospiro [pyrrolizine-3, 3'-indolin]-2'-one
            V Karthikeyan, V.Ramkumar, R.J. Karunakaran
             Acta Cryst E70 (5), o541-o542. (2014).

    133. C2-Symmetric normal and mesoionic bis-N-heterocyclic carbenes with biphenyl backbone.
            A comparison of bis (1, 2, 3-triazol-5-ylidene) and bis (imidazol-2-ylidene) ligands
             Sandip Guchhait , KeshabGhosh, B Sureshbabu, V.Ramkumar, S Sankararaman
             Journal of Organometallic Chemistry, 768, 68–74. (2014).

    134. ß-Tetrasubstituted meso-Tetra (4'-n-butylphenyl) porphyrins and Their Metal Complexes: Synthesis and Structural Properties
            P Bhyrappa, UK Sarangi, V Velkannan, V Ramkumar
            European Journal of Inorganic Chemistry 2014 (33), 5760-5770.

    135. Crystal structure of 2, 4-bis (2-chlorophenyl)-7-tert-pentyl-3-azabicyclo [3.3. 1] nonan-9-one
            D H Park, V Ramkumar, P Parthiban
           Acta Crystallographica Section E: Structure Reports Online 70 (11), o1161-o1162

    2015

    136. Catalytic asymmetric hydrogenation using a [2.2] paracyclophane based chiral 1, 2, 3-triazol-5-ylidene–Pd complex under ambient conditions and 1 atmosphere of...
           A Dasgupta, V Ramkumar, S Sankararaman
           RSC Advances 5 (28), 21558-21561

    137. Zr (iv) complexes containing salan-type ligands: synthesis, structural characterization and role as catalysts towards the polymerization of e-caprolactone, rac-lactide,...
           M Mandal, D Chakraborty, V Ramkumar
           RSC Advances 5 (36), 28536-28553

    138. Zwitterionic group 4 aminophenolate catalysts for the polymerization of lactides and ethylene
           SK Roymuhury, D Chakraborty, V Ramkumar
           New Journal of Chemistry 39 (7), 5218-5230.

    139. Synthesis and characterization of group 4 metal alkoxide complexes containing imine based bis-bidentate ligands: effective catalysts for the ring opening polymeriza...
           SK Roymuhury, D Chakraborty, V Ramkumar
           Dalton Transactions 44 (22), 10352-10367

    140. Group 4 metal complexes of Trost's semi-crown ligand: synthesis, structural characterization and studies on the ring-opening polymerization of lactides and e-caprola...
           B Rajashekhar, SK Roymuhury, D Chakraborty, V Ramkumar
           Dalton Transactions 44 (37), 16280-16293

    141. A new class of MPV type reduction in group 4 alkoxide complexes of salicylaldiminato ligands: Efficient catalysts for the ROP of lactides, epoxides and polymerizatio...
           D Chakraborty, D Mandal, V Ramkumar, V Subramanian, JV Sundar
           Polymer 56, 157-170.

    142. Nucleophilic difluoroalkylation of benzophenones, benzaldehydes and Schiff's bases by tetrafluoroethyl ether and difluoroacetamide
           R Vaidyanathaswamy, GA Raman, V Ramkumar, R Anand
           Journal of Fluorine Chemistry 169, 38-49.

    143. Role of peripheral phenanthroline groups in the self-assembly of self-assembled molecular triangles
           MC Naranthatta, V Ramkumar, DK Chand
           Journal of Chemical Sciences 127 (2), 273-280.

    144. Imino (phenoxide) compounds of magnesium: Synthesis, structural characterization, and polymerization studies
           S Ghosh, D Chakraborty, V Ramkumar
           Journal of Polymer Science Part A: Polymer Chemistry 53 (12), 1474-1491.

    145. Cation-Transporting Peptides: Scaffolds for Functionalized Pores?
           H Behera, V Ramkumar, N Madhavan
           Chemistry-A European Journal 21 (28), 10179-10184.

    146. Aluminium complexes bearing N, O-aminophenol ligands as efficient catalysts for the ring opening polymerization of lactide
           SK Roymuhury, D Chakraborty, V Ramkumar
           European Polymer Journal 70, 203-214.

    147. Borate-based ligands with soft heterocycles and their ruthenium complexes
           DK Roy, R Borthakur, S Bhattacharyya, V Ramkumar, S Ghosh
           Journal of Organometallic Chemistry 799, 132-137.

    148. Synthesis and structures of (-) menthyl and (+) neomenthyl substituted enantio pure bis (1, 2, 3-triazol-5-ylidene) PdI 2 complexes and PEPPSI type (1, 2, 3-triazol-5-...
           A Mohan, V Ramkumar, S Sankararaman
           Journal of Organometallic Chemistry 799, 115-121.

    149. A mild and efficient method for the synthesis of structurally diverse 1, 2, 3-triazolylidene palladium (II) diiodo complexes. Comparison of catalytic activities for Suzuki–...
           B Sureshbabu, V Ramkumar, S Sankararaman
           Journal of Organometallic Chemistry 799, 232-238.

    2016

    150. Zwitterionic niobium and tantalum complexes with bidentate aminophenol scaffolds: synthesis, structural characterization and use in the ring opening polymerization...
           SK Roymuhury, D Chakraborty, V Ramkumar
           RSC Advances 6 (54), 48816-48826.

    151. New Trinuclear Complexes of Group 6, 8, and 9 Metals with a Triply Bridging Borylene Ligand
            K Yuvaraj, M Bhattacharyya, R Prakash, V Ramkumar, S Ghosh
            Chemistry-A European Journal 22 (26), 8889-8896.

    152. Highly Selective and Modular Synthesis of 3-Aryl-4-(arylethynyl)-2H-chromen-2-ones from 2-Iodoaryl 2-Arylacetates through a Carbonylative Sonogashira Coupli...
           A Chandrasekhar, V Ramkumar, S Sankararaman
           European Journal of Organic Chemistry 2016 (23), 4041-4049.

    153. Synthesis of Fluorescent 1, 3-Diarylpropynones by Carbonylative Alkynylation Reaction Using (Phosphine)(1, 2, 3-triazol-5-ylidene) palladium Complexes as Catal...
           A Dasgupta, V Ramkumar, S Sankararaman
           European Journal of Organic Chemistry 2016 (28), 4817-4823.

    154. Zwitterionic Complexes of Group 4 Metal Chlorides Containing a Bis (imino) phenoxide Scaffold: Synthesis, Characterization and Polymerization Studies
            D Chakraborty, ER Chokkapu, M Mandal, RR Gowda, V Ramkumar
            ChemistrySelect 1 (16), 5218-5229.

    155. Group 4 complexes of salicylbenzoxazole ligands as effective catalysts for the ring-opening polymerization of lactides, epoxides and copolymerization of e-caprolact...
           S Pappuru, D Chakraborty, JV Sundar, SK Roymuhury, V Ramkumar, ...
           Polymer 102, 231-247.

    156. Carbon-supported Co (III) dimer for oxygen reduction reaction in alkaline medium
           A Sheelam, S Mandal, T Thippani, V Ramkumar, K Ramanujam
           Ionics 22 (11), 2183-2194.

    2017

    157. Nb and Ta benzotriazole or benzoxazole phenoxide complexes as catalysts for the ring-opening polymerization of glycidol to synthesize hyperbranched polyglycerols
           S Pappuru, D Chakraborty, V Ramkumar
           Dalton Transactions 46 (47), 16640-16654.

    158. Sulfamide-Lattice Restructuring To Form Dimensionally Controlled Molecular Arrays and Gel-Forming Systems
           SV Raghava, P Gopinath, BK Srivastava, V Ramkumar, ...
           Chemistry-A European Journal 23 (15), 3658-3665.

    159. 3-Benzylidene-1'-methyl-4'-phenyldispiro [cyclopentane-1, 3'-pyrrolidine-2', 1''-acenaphthene]-2, 2''-dione
            E Varadharajan, V Ramkumar, MVB Scholastica, APT Augustine
           IUCrData 2 (4), x170581.

    160. Bite-Angle-Regulated Coordination Geometries: Tetrahedral and Trigonal Bipyramidal in Ni (II) with Biphenyl-Appended (2-Pyridyl) alkylamine N, N'-Bidentate Lig...
           D Sasi, V Ramkumar, NN Murthy
           ACS Omega 2 (6), 2474-2481.

    161. Triamide macrocyclic chloride receptors via a one-pot tandem reduction–condensation–cyclization reaction
           H Behera, V Ramkumar, N Madhavan
           Organic & biomolecular chemistry 15 (23), 4937-4940.

    162. Ring-opening copolymerization of maleic anhydride or L-Lactide with tert-butyl glycidyl ether by using efficient Ti and Zr benzoxazole-substituted 8-Hydroxyquinolina...
            S Pappuru, D Chakraborty, V Ramkumar, DK Chand
           Polymer 123, 267-281.

    163. High-spin iron (II) complexes of halides and pseudo-halides with biphenyl-appended N, N'-bidentate ligand: X-ray structural and spectroscopic studies
           KV Ramanaiah, V Ramkumar, NN Murthy
           Inorganica Chimica Acta 466, 197-204.

    164. Understanding the solvation behavior of tetramethylguanidinium based ionic liquids in dilute aqueous solutions through apparent molar properties
            I Das, B kumar Chennuri, V Ramkumar, RL Gardas
            Journal of Molecular Liquids 242, 129-136.

    165. Homoleptic Zr and Hf Complexes of Imino/Bis (imino) phenoxide Scaffolds: Synthesis, Structural Characterization and Their Catalytic Activity in the ROP of Cyclic Est...
            B Rajashekhar, M Mandal, D Chakraborty, V Ramkumar
            ChemistrySelect 2 (27), 8408-8417.

    2018

    166. Electron Precise Group 5 Dimetallaheteroboranes [{CpV (µ-EPh)} 2 {µ-?2: ?2-BH3E}] and [{CpNb (µ-EPh)} 2 {µ-?2: ?2-B2H4E}](E= S or Se)
           MG Chowdhury, SK Barik, K Saha, B Kirubakaran, Abhishek Banerjee, Venkatachalam Ramkumar, Sundargopal Ghosh
           Inorganic chemistry.

    167. Group 4 metal complexes containing the salalen ligands: Synthesis, structural characterization and studies on the ROP of cyclic esters
           D Chakraborty, B Rajashekhar, M Mandal, V Ramkumar
           Journal of Organometallic Chemistry.

    168. Synthesis of a new class of cationic Pd (II) complexes with 1, 2, 3-triazol-5-ylidene ligand and their catalytic application in the conversion of internal alkynes to 1, 2-diketones.
           JB Shaik, V Ramkumar, S Sankararaman
           Journal of Organometallic Chemistry 860, 1-8,2018

    Patents

    1. Group 4 metal aryloxy compounds as bulk polymerization catalysts for lactide polymerization, (Indian Patent Application No:2550/CHE/2010 )
          Ravikumar R. Gowda, Debashis Chakraborty and Venkatachalam Ramkumar.

    2. Group 4 metal aryloxy compounds..(Indian Patent Application No:1376/CHE/2011)
          Ravikumar R. Gowda, Debashis Chakraborty and Venkatachalam Ramkumar.

    3. Metal free catalysts for the ring-opening polymerization of cyclic esters and lactide.(Indian Patent Application No:under progress)
          Debashis Chakraborty, Payal Malik, Ravikumar R. Gowda and Venkatachalam Ramkumar.

    4. Imino(phenoxy) alane: A High Mileage Catalyst for PLA Synthesis ( Patent Application in Progress).
         Debashis Chakraborty, Swarup Ghosh, Venkatachalam Ramkumar

     5. Catalyst for poly (lactide) synthesis and uses thereof
         D Chakraborty, S Ghosh, Venkatachalam Ramkumar
         US Patent App. 14/781,016   


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