Eluvathingal Devassy Jemmis

Eluvathingal D Jemmis

Born (1951-10-31) 31 October 1951
Chevvoor, Thrissur District, Kerala, India
Nationality Indian
Fields Applied theoretical chemistry
Institutions

University of Hyderabad
Indian Institute of Science

Indian Institute of Science Education and Research, Thiruvananthapuram
Alma mater Indian Institute of Technology, Kanpur
Princeton University
Cornell University
Doctoral advisor Paul von Ragué Schleyer
Known for

Jemmis ring-cap orbital overlap criteria[1]

Jemmis mno rules
Notable awards Padma Shri (2014)

Eluvathingal Devassy Jemmis (born October 31, 1951) is a Professor of theoretical chemistry at the Indian Institute of Science, Bangalore, India. He was also the Director of Indian Institute of Science Education and Research, Thiruvananthapuram (IISER-TVM). His primary area of research is applied theoretical chemistry with emphasis on structure, bonding and reactivity, across the periodic table of the elements. Apart from many of his contributions to applied theoretical chemistry,[2] an equivalent of the structural chemistry of carbon, as exemplified by the Huckel 4n+2 Rule, benzenoid aromatics and graphite, and tetrahedral carbon and diamond, is brought in the structural chemistry of boron by the Jemmis mno rules which relates polyhedral and macropolyhedral boranes to allotropes of boron and boron-rich solids.[3][4][5] He has been awarded Padma Shri in Science and Engineering category (year 2014) by the Government of India.[6]

Education

Eluvathingal D Jemmis, after obtaining his BSc from University College, Thiruvananthapuram and St. Thomas College, Thrissur and MSc from IIT Kanpur, joined Princeton University (1973) under the supervision of Profs Paul von Rague Schleyer and John Pople (1998 Nobel Laureate). Moving along with his supervisors Jemmis spent one semester at the University of Munich and four semesters at the University of Erlangen-Nuernberg. He was awarded the PhD degree (1978) from Princeton. After a two-year post-doctoral work at Cornell University with Professor Roald Hoffmann (1981 Nobel Laureate), he joined the School of Chemistry, University of Hyderabad (1980) rising to the rank of Professor (1990) and Dean (2002). Jemmis was a Visiting Fellow at the Australian National University, Canberra (1991) and a Visiting Professor at the Centre for Computational Quantum Chemistry of the University of Georgia, Athens (2000). Dr. Jemmis is an honorary Professor at JNCASR and Adjunct Professor at ICTS-TIFR. In 2005 he accepted an invitation from the Indian Institute of Science (IISc), Bangalore and joined the Department of Inorganic and Physical Chemistry. In 2008 Dr. Jemmis moved again, this time on a five year deputation, accepting the responsibility to start the Indian Institute of Science Education and Research, Thiruvananthapuram.

Research

Jemmis is engaged in the study of structure and reactivity of molecules, clusters and solids using theoretical methods. A constant attempt is made by his group to find common threads between problems of different areas, viz. between organic and organometallic chemistry; amongst the chemistry of various main group elements; between polymorphs of elements and their compounds; etc. His research group not only gets numbers as an answer to a problem, but also tries to find out why the numbers turn out the way they do, based on overlap of orbitals, perturbation theory and symmetry, and devise transferable models. Significant results have been obtained in understanding the reactions of transition metal organometallics, week H-bond,[7] electronic structure of three-dimensional aromatic compounds,[1][8] polyhedral boranes, carboranes, silaboranes, electron counting rules for polycondensation, and structure of boron allotropes.[9][10][11][12][13] The latter involved an extension of the Wade’s Rules for polyhedral boranes to macropolyhedral boranes and the Huckel 4n+2 Rule to three dimensions. The Jemmis mno rules for polyhedral boranes have found a place in textbooks [14][15][16][17][18][19][20] and are being taught in Inorganic Chemistry Courses in leading educational institutions around the world. Just as the basic tenets of the structural chemistry of carbon has stood the test of time, and led to major developments in carbon, the edifice of the structural chemistry expounded by Jemmis has already begun to do so for boron. Several of his predictions have been proved experimentally.[21][22][23] He has mentored 20 PhD students and several postdoctoral and students and research associates, and published about 200 research articles.

Memberships and honors

References

  1. 1 2 Jemmis, E. D. (1982). "Overlap control and stability of polyhedral molecules. closo-Carboranes". J. Am. Chem. Soc. 104: 7017–7020. doi:10.1021/ja00382a008.
  2. ↑ Prasad V. Bharatam, Gernot Frenking and G. Narahari Sastry (2012). "Research expedition of Prof. Eluvathingal D. Jemmis". Theor Chem Acc 131: 1–2. doi:10.1007/s00214-012-1164-4.
  3. ↑ Jemmis, E. D.; Balakrishnarajan M. M; Pancharatna P. D. (2002). "Electronic Requirements for Macropolyhedral Boranes". Chem. Rev 102: 93–114. doi:10.1021/cr990356x. PMID 11782130.
  4. ↑ Jemmis, E. D.; Jayasree E. G. (2003). "Analogies between Boron and Carbon". Acc. Chem. Res 36: 816–824. doi:10.1021/ar0300266.
  5. ↑ Prasad, D. L. V. K.; Balakrishnarajan M. M; Jemmis E. D. (2005). "Electronic structure and bonding of β-rhombohedral boron using cluster fragment approach". Phys. Rev. B 72: 195102. Bibcode:2005PhRvB..72s5102P. doi:10.1103/PhysRevB.72.195102.
  6. ↑ "Padma Shri Award Recipients 2014".
  7. ↑ Jorly, J.; Jemmis E. D. (2007). "Red-, Blue-, or No-Shift in Hydrogen Bonds:  A Unified Explanation". J. Am. Chem. Soc. 129: 4620–4632. doi:10.1021/ja067545z.
  8. ↑ Jemmis, E. D.; Schleyer P. v. R. (1982). "Aromaticity in three dimensions. 4. Influence of orbital compatibility on the geometry and stability of capped annulene rings with six interstitial electrons". J. Am. Chem. Soc. 104: 4781–4788. doi:10.1021/ja00382a008.
  9. ↑ Jemmis, E. D.; Balakrishnarajan M. M. (2001). "Polyhedral Boranes and Elemental Boron: Direct Structural Relations and Diverse Electronic Requirements". J. Am. Chem. Soc. 123: 4324–4330. doi:10.1021/ja0026962.
  10. ↑ Jemmis, E. D.; Balakrishnarajan M. M.; Pancharatna P. D. (2001). "A Unifying Electron-Counting Rule for Macropolyhedral Boranes, Metallaboranes, and Metallocenes". J. Am. Chem. Soc. 123: 4313–4323. doi:10.1021/ja003233z. PMID 11457198.
  11. ↑ Prasad, D. L. V. K.; Jemmis E. D. (2000). "Stuffing Improves the Stability of Fullerene-like Boron Clusters". Phys. Rev. Lett. 100 (16): 165504. Bibcode:2008PhRvL.100p5504P. doi:10.1103/PhysRevLett.100.165504. PMID 18518216.
  12. ↑ Shameema, O.; Jemmis E. D. (2008). "Orbital Compatibility in the Condensation of Polyhedral Boranes". Angew. Chem., Int. Ed. 47: 5561–5564. doi:10.1002/anie.200801295.
  13. ↑ Prasad, D. L. V. K.; Jemmis E. D. (2010). "Stuffed fullerenelike boron carbide nanoclusters". Appl. Phys. Lett. 96: 023108. Bibcode:2010ApPhL..96b3108P. doi:10.1063/1.3280369.
  14. ↑ Gary L. Miessler and Donald A. Tarr (2011). Inorganic Chemistry. Prentice Hall. ISBN 0136128661.
  15. ↑ Wai-Kee Li, Gong-Du Zhou and Thomas Mak (2008). Advanced Structural Inorganic Chemistry (International Union of Crystallography Texts on Crystallography). Oxford University Press. ISBN 0199216959.
  16. ↑ Thomas Fehlner, Jean-François Halet, Jean-Yves (2007). Molecular clusters : a bridge to solid-state chemistry. Cambridge: Cambridge University Press. ISBN 0521852366.
  17. ↑ Matthias Driess and Heinrich Nöth (2004). Molecular clusters of the main group elements (1. Aufl. ed.). Weinheim: Wiley-VCH. ISBN 3527306544.
  18. ↑ Bd Gupta and Anil J. Elias (2010). Basic organometallic chemistry : concepts, syntheses, and applications of transition metals. Hyderabad: Universities Press. ISBN 1439849684.
  19. ↑ Grimes, Russell N. Carboranes (2nd ed.). London: Academic Press. ISBN 012374170X.
  20. ↑ Comba, edited by Peter. Modeling of molecular properties. Weinheim: Wiley-VCH. ISBN 3527636412.
  21. ↑ Bin, Li; John D. Corbett (2005). "Phase Stabilization through Electronic Tuning:  Electron-Poorer Alkali-Metal−Indium Compounds with Unprecedented In/Li Clusters". J. Am. Chem. Soc. 127: 926–932. doi:10.1021/ja0402046.
  22. ↑ Bernhardt, E.; Brauer D. J.; Finze M.; Willner H. (2007). "closo-[B21H18]−: A Face-Fused Diicosahedral Borate Ion". Angew. Chem., Int. Ed. 46: 2927–2930. doi:10.1002/anie.200604077.
  23. ↑ Pediaditakis, A.; Schroeder M.; Sagawe V; Ludwig T.; Hillebrecht H. (2010). "Binary Boron-Rich Borides of Magnesium: Single-Crystal Investigations and Properties of MgB7 and the New Boride Mg5B44". Inorg. Chem. 49: 10882–10893. doi:10.1021/ic1012389.

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