Dr. C. Sivasankar

Department of Chemistry
DegreeSpecializationUniversity / InstitutionYear of Completion
1Ph.D. Organometallic ChemistryIndian Institute of Science (IISc),Bangalore,India2003
2M.Sc.General ChemistryMuthurangam Govt. Arts College, Vellore (Madras University)1997
3B.Sc.ChemistryGovt. Thirumagal Mills College, Gudiyattam (Madras University)1995
Area of Specialization/Interest: 
  • Catalysis
  • Organometallic Chemistry
  • Computational Chemistry
  • Bio-inorganic Chemistry


Research Experience:
PDF. Catalysis The Scripps Research Institute (TSRI), USA 2007-05/2008
PDF. Asymmetric Organic Synthesis Osaka University, Osaka - Japan 2006
PDF. Bio-inorganic Chemistry Christian Albrects University of Kiel - Germany 2003-2005

Recent Visit (May 2014)
Department of Chemistry, Faculty of Science, Mahidol University
Bangkok, Thailand
Host: Prof. Preeyanuch Sangtrirutnugul
(B.Sc. Massachusetts Institute of Technology (MIT),
Ph.D. University of California, Berkeley, USA)

Publications (in last 3 years): 

Front Cover: Protonation of Coordinated Dinitrogen Using Protons Generated from Molecular Hydrogen (Eur. J. Inorg. Chem. /2017)

Masilamani Tamizmani and Chinnappan Sivasankar*

Cover page: Version of Record online: 21 SEP 2017 | DOI: 10.1002/ejic.201701050

Article: Version of Record online: 6 SEP 2017 | DOI: 10.1002/ejic.201700784

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Masilamani Tamizmani and Chinnappan Sivasankar, Protonation of coordinated dinitrogen using protons generated from molecular hydrogen, Eur. J. Inorg. Chem., 2017, in press. DOI: 10.1002/ejic.201700784


Kankanala Ramakrishna and Chinnappan Sivasankar, Synthesis of Amido Esters and Amido Phosphonates through Carbonylation of Diazo Compounds Followed by Nucleophilic Addition Reaction, Eur. J. Org. Chem., 2017, 4035–4043.

Version of Record online: 24 JUL 2017 | DOI: 10.1002/ejoc.201700581

Independent Research Publications from 2010



Masilamani Tamizmani and Chinnappan Sivasankar: Synthesis, characterization and catalytic application of some novel PNP-Ni(II) complexes: Regio-selective [2+2+2] cycloaddition reaction of alkyne, J. Organomet. Chem., 2017doi.org/10.1016/j.jorganchem.2017.02.039 (in press).

K. Ramakrishna and Chinnappan Sivasankar: Iridium Catalyzed Acceptor/Acceptor Carbene Insertion into the N−H Bond in Water Medium, Org. Biomol. Chem., 2017. DOI:10.1039/C7OB00177K (Article in press)

Ramakrishna Kankanala; Jisha Mary Thomas,; Chinnappan Sivasankar, A Green Approach to the Synthesis of α-Amino Phosphate in Water Medium: Carbene Insertion into the N-H Bond by Cu(I) Catalyst, J. Org. Chem., 2016, DOI: 10.1021/acs.joc.6b01940. in press


Pallavi Agarwal, Jisha Mary Thomas, Chinnappan Sivasankar, Munirathinam Nethaji, Natesan Thirupathi, Six-membered Cyclopalladated N,N′,N′′-Triarylguanidines, [{κ2(C,N)Pd}2(μ-OAc)(μ-Pz)], [κ2(C,N)Pd(μ-Pz)]2 and a Novel [AgNO3⊂{{κ2(C,N)Pd}2(μ-NO3)(μ-Pz)}]: Syntheses, Reactivity Studies, Structural Aspects, and Solution Behavior, Polyhedron, 2016, doi:10.1016/j.poly.2016.07.008.

K. Ramakrishna and Chinnappan Sivasankar, Synthesis of Amino Benzoic Acid Derivatives via Chemoselective Carbene Insertion into the -NH Bond Catalyzed by Cu(I) Complex, J. Org. Chem.2016, in press  DOI: 10.1021/acs.joc.6b01249. Dedicated to Prof. Asoka G. Samuelson on the occasion of his 60th birthday.


Phosphine ligands stabilized Cu(I) catalysts for carbene insertion into the N-H bond, Kankanala Ramakrishna, Chinnappan Sivasankar, J. Organomet. Chem. 805, 2016, 122-129.


Chemoselective Carbene insertion into the N−H Bond over O−H Bond Using a Well-Defined Single Site (P−P)Cu(I) Catalyst, Kankanala Ramakrishna, Mani Murali, Chinnappan Sivasankar, Org. Lett., 2015, 3814-3817


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Hydroxylamine synthesis by oxygen insertion into Re[BOND]NH2 bond via Baeyer–Villiger oxidation: a Theoretical study, Sambath Baskaran and Chinnappan Sivasankar, J. Phys. Org. Chem., 2015 (in press) DOI: 10.1002/poc.3472


Link to full-size graphical abstract

Ionic and Neutral Half-Sandwich Guanidinatoruthenium(II) Complexes and Their Solution Behavior, Ram Kishan, Robin Kumar, Sambath Baskaran, Chinnappan Sivasankar and Natesan Thirupathi, Eur. J. Inorg. Chem., 2015, in press, DOI: 10.1002/ejic.201500395


Sambath Baskaran, Perumal Balu and Chinnappan Sivasankar,Functionalization of N2 to NH3 via Direct N≡N Bond Cleavage Using M(III)(NMe2)3 (M=W/Mo): A Theoretical Study, J. Chem. Sci. 1272015, 83–94.


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Arup Mukherjee, Tamal K. Sen, Sambath Baskaran, Chinnappan Sivasankar, Swadhin K. Mandal, Slow Hydrolysis of an Organozirconium Complex: The First Polyoxometallic Heptanuclear Zirconium Oxide, J. Organomet. Chem. 775,2015, 76–79.


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Masilamani Tamizmani, Ramakrishna Kankanala and Chinnappan Sivasankar, Coordinated and Uncoordinated Anion Dictated Coordination Mode of PN(Me)P Ligand in Pd(II) Complexes and Their Catalytic Applications, J. Organomet. Chem2014In Press, DOI: 10.1016/j.jorganchem.2014.04.011.



Chinnappan Sivasankar, SambathBaskaran, Masilamani Tamizmani and Ramakrishna Kankanala,  Lessons Learned and Lessons to be Learned for Developing Homogeneous Transition Metal Complexes Catalyzed Reduction of N2 to Ammonia, J. Organomet. Chem.7522014, 44–58. Most Downloaded article


SambathBaskaran and Chinnappan Sivasankar,Molecular and electronic structure analysis of some novel copper and zinc complexes of hypervalent carbon based ligand: DFT studies, J. Organomet. Chem.7522014, 123–132. (Most Downloaded article)


SambathBaskaran and Chinnappan Sivasankar, Ammonia and Hydrazine Synthesis from [N2-W{(NHCH2CH2)3N}] and [AH]+[BH]- using Sivasankar Catalytic Cycle: DFT StudiesComp. Theor. Chem.1027, 2014, 73–78. Most Downloaded article


Abstract Image

Brijesh Chandra, Sanjeev P. Mahanta, Narendra N. Pati, SambathBaskaran, Ravi K. Kanaparthi, Chinnappan Sivasankar and Pradeepta K. Panda, Calix[2]bispyrrolylarenes: New Expanded Calix[4]pyrroles for Fluorometric Sensing of Anions via Extended π-Conjugation, Org. Lett.,152013, 306–309.


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SambathBaskaran and Chinnappan Sivasankar, Reduction of N2 by H2 to NH3 and N2H4 using [MoL] (L = triamidoamine) and organic co-catalysts: A theoretical approach, J. Mol. Catal. A: Chem.,3702013, 140–144.



Perumal Balu, Sambath Baskaran, Venu Kannappan and Chinnappan Sivasankar, A possibility of functionalizing the dinitrogen in a Chatt complex by H2: Density functional studies. Polyhedron312012, 676-681.


Graphical abstract: Hydrogenation of dinitrogen to ammonia in [WF(PH2(CH2)2PH2)2N2] using H2: Insights from DFT calculations

Perumal Balu, Sambath Baskaran, Venu Kannappan and Chinnappan Sivasankar, Hydrogenation of Dinitrogen to Ammonia in [WF(PH2(CH2)2PH2)2N2] Using H2: Insights from DFT Calculation. New J. Chem., 36, 2012, 562-565. HOT Article

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Sambath Baskaran, Masilamani Tamizmani and Chinnappan Sivasankar, A [Fe(CB6)]  Platform for Binding of Small Molecules: Insights from DFT Calculations. J. Comput. Chem.,33, 2012, 1047-1054.

Abstract Image

Sanjeev. P. Mahanta, B. Sathish Kumar, Sambath Baskaran, Chinnappan Sivasankar and Panda Pradeepta, Colorimetric sensing of fluoride ion by new expandedcalix[4]pyrrole through anion–π interaction. Org. Lett., 14, 2012, 548-551.


Sambath Baskaran, P. Venuvanalingam and  Chinnappan Sivasankar,Understanding the stability, electronic and molecular structure of some copper(III) complexes containing alkyl and non alkyl ligands: Insights from DFT calculations, J. Organomet. Chem., 696, 2011, 2627-2634.

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Sambath Baskaran and Chinnappan Sivasankar, Functionalization of Dinitrogen Using a Historically Significant Ru Complex: A New Life for an Old Complex, Eur. J. Inorg. Chem., 2010, 4716. (Dedicated to Prof. Ashoka G. Samuelson on the occasion of his 55th birthday)


Robin Kumar, Ram Kishan, Jisha Mary Thomas, SivasankarChinnappan and NatesanThirupathi,
Probing the factors that influence the conformation of a guanidinato ligand in [(η5-C5Me5)M(NN)X] (NN = chelating N,N′,N′′-tri(o-substituted aryl)guanidinate(1−); X = chloro, azido and triazolato)
New J. Chem., 2018,42, 1853-1866 (DOI: 10.1039/C7NJ03766J)  


Thayalaraj Christopher Jeyakumar, SambathBaskaran and ChinnappanSivasankar
Possibility of reducing the coordinated dinitrogen into ammonia and hydrazine using [Ru-L] (L = triamidoamine) and FLP-H2: A DFT study J. Chem. Sci. 2018, 130, 57. (DOI: 10.1007/s12039-018-1460-1)

Invited Lectures (International/National)

S. No Title Name of  the Conference / Seminar Organized by Whether International / National / State / Regional / College or University Level
1 Coordinator of the Seminar
(24-28, March, 2014)
Indo-French Seminar on Bio-inorganic Approaches to Current Health Problems Department of Chemistry,
Pondicherry University
2 New viable approaches for ammonia synthesis from N2
(06-08, February,2014)
Innovations in Chemistry- Health and Energy Department of Chemistry,
Karunya University,
3 Principles and applications of catalysis: small molecules
(14 February,2014)
Faculty refresher  programme Bharathidasan University
4 Principles and applications of catalysis: small molecules 
(14 February,2014)
Faculty refresher  programme Bharathidasan University
5 Ammonia synthesis via direct N-N bond cleavage of N2: DFT studies (5-7 February,2014) International Conference on Chemistry-Frontiers and Challenges PSGR Krishnammal College for Women
Coimbatore-641004, Tamil Nadu, India
6 A role of chemist in the future energy productions (8 October, 2013) Annual Program, Chief Guest TheivanaiAmmal College for Women
Villupuram - 605 602
7 Ammonia and Hydrazine Production from N2 and H2.
(30 September-1 October, 2013)
National Symposium on Nanosciences and Nanotechnology Department of Nanosciences and Nanotechnology
Karunya University,
8 Secretary of the Symposium
(22-23, March, 2013)
National Symposium on Recent Advances in Chemistry (NSRAC-2013) Department of Chemistry,
Pondicherry University
9 A New Strategy Ammonia Production from Dinitrogen,
(8-10, February 2013)
Chennai Chemistry Conference
IIT-M, CLRI, University Of Madras and Anna University National
10 Lessons from nature for developing superior catalysts, (September 29, 2012) Academies Lecture Workshop Indian Academy of Sciences Bangalore, The National Academy of Sciences, India (Allahabad), The National Sciences Academy New Delhi and Madurai Kamaraj University. National
11 Ammonia synthesis : can it be done low pressure and low temperature (09 April, 2012) Bio-inorganic workshop.
Selected as one of the best resource persons
Department of Chemistry, Madurai Kamaraj University National
12 A new experimental strategy for ammonia production from N2 and H2 (June 22-26, 2012) Faculty Development Programme Vellore Institute Technology University, Vellore. National
13 Ammonia synthesis: can it be done at low temperature and pressure (April 09, 2012) Recent developments in Bio-inorganic chemistry DST and Madurai Kamaraj University. National
14 Understanding the chemical reaction mechanism using computational methods
(29 July 2011)
Faculty Development Programme Department of Chemistry, Madurai Kamaraj University National
15 Can you make one like me: Nitrogenase Faculty Development Programme Department of Chemistry, Madurai Kamaraj University National
16 Functionalization of Dinitrogen Using a Historically Significant Ru Complex: A New Life for an Old Complex
(March 30, 2011)
National Symposium on Renaissance in Chemistry (NSRC-2011) March 30, 2011
Pondicherry University, Puducherry
UGC-SAP and Department of chemistry,
Pondicherry University
17 Exploring chemistry with the electronic structure calculations (2 December, 2009 Annual Program, Chief Guest Department of Chemistry,
National College, Trichy(Bharadidasan University)
18 Synthesis of ammonia and hydrazine using a historically significant complex: A new life for an old complex(13 February, 2009) Annual Program, Chief Guest Department of Chemistry,
Sri Paramakalyani CollegeAlwarkurichi - 627 412  TirunelveliDt, TamilNadu
19 Reaction and mechanism of ammonia synthesis through the
Chatt cycle: Experimental and DFT studies (29 April, 2008)
Annual Program, Chief Guest Department of Chemistry
Government Thirumagal Mill's College, Gudiyattam, Vellore District, Tamil Nadu
(Madras University)

 Poster Presentation (National and International)

S. No Title of the Poster Presented Title of  Conference / Seminar Organized by Whether International / National / State / Regional / College or University Level
1 A New Strategy for Hydrogenation of N2 to
NH3 and N2H4 (December 13-16, 2013)
Modern Trends in Inorganic Chemistry
Symposium on
Department of Chemistry, IIT Roorkee, Roorkee-247667 International
2 Conversion of Dinitrogen to Ammonia and Hydrazine using Ru Complex: A New Life for an Old Complex (20-22 February 2013) International Conference on Biological Inorganic Chemistry (ICBIC-2013) Department of Chemistry Periyar University, Salem-636011 International
3 A New Strategy for the Hydrogenation of  of N2 to NH3 and N2H4  in Schrock Catalyst using H2, Chemical Research Society of India  South Zonal Meeting (CRSI-2011),
16-17 December 2011, Pondicherry University, Puducherry
UGC-SAP and Department of chemistry National
4 Understanding the Selectivity of 1,3 Dipolar Cycloaddition Reactions (DCR): DFT Studies National Conference on “Recent Trends in Organic Synthesis-2011” (RTOS-2011) UGC-SAP, School of Chemistry, Bhrathidasan University
5 Understanding the Electronic Structure and Bonding Analysis of Transition Metal Azide Complexes National Conference on Frontier Areas in Chemistry (NCFAC-2011)
22nd December 2011,
Pondicherry University, Puducherry
UGC-SAP and Department of Chemistry National


Contact Details
Telephone No: 
Fax No: 
+91-413-2656 740
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