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Indian Institute of Science Education and Research
Thiruvananthapuram

Dr Ramaraj Ayyappan
Assistant Professor Grade I (Chemistry)
  +91 (0)471 - 2778320
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IISER-TVM publication (Aug 23, 2022 - present)

1. Recent progress in dinitrogen functionalization: Stoichiometric and Catalytic reactions; Rajendran, A.; Devassy, D.; Ayyappan, R. In SPR-Organometallic Chemistry, RSC, Editors, Bakewell, C.; Owen, G. R.; Costa, N.; Musgrave, R. Chapter-6, Organomet. Chem. 2024, 45, 150-192. (https://doi.org/10.1039/9781837676200) (invited book chapter)

2. Ayyappan, R. A new recipe for the isolation of a cationic Mn-pentane σ-complex. J Chem Sci 137, 63 (2025). https://doi.org/10.1007/s12039-025-02411-9. (Invited news story article)

Ph. D and Post-Doc Publications (2011 - July 2022)

  1. Ramaraj, A.; Nethaji, M.; Jagirdar, B. R. Contrasting Reactivity Behaviour of the [RuHCl(CO)(PNP)] Complex with Electrophilic Reagents XOTf (X = H, CH3, Me3Si). Dalt. Trans. 2014, 43, 14625–14635. https://doi.org/10.1039/C4DT01570C
  2. Ramaraj, A.; Jagirdar, B. R.; Nethaji, M. Small Molecule Binding and Activation on a Cationic Ruthenium Center of a Pincer Complex. J. Organomet. Chem. 2016, 825–826, 114–124. https://doi.org/10.1016/j.jorganchem.2016.10.030
  3. Ramaraj, A.; Reddy, K. H. K.; Keil, H.; Herbst-Irmer, R.; Stalke, D.; Jemmis, E. D.; Jagirdar, B. R. Approaches to Sigma Complexes via Displacement of Agostic Interactions: An Experimental and Theoretical Investigation. Organometallics 2017, 36 (15), 2736–2745. https://doi.org/10.1021/acs.organomet.7b00210
  4. Ramaraj, A.; Nethaji, M.; Jagirdar, B. R. Hydrogenation of CO2, Carbonyl and Imine Substrates Catalyzed by [IrH3(PhPNHP)] Complex. J. Organomet. Chem. 2019, 883, 25–34. https://doi.org/10.1016/j.jorganchem.2018.12.017
  5. Ramaraj, A.; Coppel, Y.; Vendier, L.; Ghosh, S.; Sabo-Etienne, S.; Bontemps, S. Synthesis and Reactivity of Phosphine Borohydride Compounds. Chem. Commun. 2021, 57 (3), 375–378. https://doi.org/10.1039/D0CC07072F
  6. Ramaraj, A.; Saha, K.; Grellier, M.; Clot, E.; Vendier, L.; Ghosh, S.; Sabo-Etienne, S.; Bontemps, S. Impact of the Alkali Metal on the Structural and Dynamic Properties of the Anionic Pentahydride Ruthenium Complexes [M(THF)x][RuH5(PCy3)2] (M = Li, Na, K). Organometallics 2021, 40(17), 3024-3032. https://doi.org/10.1021/acs.organomet.1c00384
  7. Ramaraj, A.; Abdalghani, I.; Costa, R. C.; Owen, G. R. Recent Developments on the Transformation of CO2 Utilising Ligand Cooperation and Related Strategies. Dalt. Trans. 2022, 51 (31), 11582–11611. https://doi.org/10.1039/D2DT01609E (Invited review article)
  8. Ramaraj, A.; Costa, R. C.; Owen, G. R. Recent Developments in Homogeneous Catalysis for the Functionalisation of CO2, DOI: 10.1039/9781839167713-00023, Organomet. Chem., 2022, 44, 23–67. (https://books.rsc.org/books/edited-volume/2034/chapter-abstract/4650656/Recent-developments-in-homogeneous-catalysis-for?redirectedFrom=fulltext) (book chapter).
  9. Hydroxypyridine/Pyridone Interconversions within Ruthenium Complexes and Their Application in the Catalytic Hydrogenation of CO2. Ramaraj, A.; Das, U. K.; Abdalghani, I.; Costa, R. C.; Tizzard, G. J.; Coles, S. J.; Owen, G. R. Inorg. Chem. 2023, 62(17), 6704-6710. https://doi.org/10.1021/acs.inorgchem.3c00287
  10. Combined B−H and Si−H Bond Activations at Ruthenium. Ramaraj A, Saha, K.; Kaur, U.; Gayen, S.; Vendier, L.; Sabo-Etienne, S.; Ghosh, S.; Bontemps, S. Organometallics 2023, 42(9), 752-756. https://doi.org/10.1021/acs.organomet.3c00109