Gautam Radhakrishna Desiraju

Gautam R Desiraju
Born	(1952-08-21) 21 August 1952 Madras, Tamil Nadu, India
Nationality	Indian
Alma mater	University of Bombay, University of Illinois
Known for	Crystal engineering, Hydrogen bonding
Scientific career
Fields	Chemistry, X-ray crystallography
Institutions	Indian Institute of Science

Unified scheme for strong and weak hydrogen bonds in terms of their electrostatic, dispersive and covalent character (G. R. Desiraju, Acc. Chem. Res., 2002, 35, 565–573).

Using retrosynthesis with supramolecular synthons, the crystal engineer can build up increasingly complex structures like this five-component molecular crystal (N. A. Mir, R. Dubey, G. R. Desiraju, IUCrJ, 2016, 3, 96–101).

Gautam Radhakrishna Desiraju is an Indian chemist and educationist who has contributed substantially to the themes of crystal engineering and weak hydrogen bonding. He has authored books on these subjects. He has co-authored a textbook in crystal engineering (2011). He is one of the most highly cited Indian scientists and has been recognised by awards such as the Alexander von Humboldt Forschungspreis, the ISA Medal for Science 2018 of the University of Bologna and the TWAS Prize in Chemistry. He served as President of the International Union of Crystallography for the triennium 2011–2014.

Biography

Gautam Desiraju was born 21 August 1952 in Madras, India. He had his schooling in Cathedral and John Connon Boys School in Bombay and obtained his BSc (1972) from St. Xavier's College, Bombay. He obtained his PhD (1976) from University of Illinois at Urbana-Champaign where he worked under the supervision of David Y. Curtin and Iain C. Paul. He worked between 1976 and 1978 in the Research Laboratories of Eastman Kodak Company in Rochester, NY. From 1978 to 1979 he was a research fellow in the Indian Institute of Science, Bangalore. He joined the University of Hyderabad in 1979 as a lecturer and was promoted as reader in 1984 and professor in 1990. He spent a year (1988–1989) in the CR&D department of DuPont in Wilmington as a visiting scientist. After 30 years in the University of Hyderabad, he joined the Indian Institute of Science in Bangalore in 2009. He is a member of the editorial advisory boards of Angewandte Chemie, Chemical Communications and the Journal of the American Chemical Society. He is a past president of the International Union of Crystallography[1] during 2011–2014. He was the chair of the first Gordon Research Conference in Crystal Engineering, which was held in 2010. He is a recipient of an honorary doctorate degree of the Universidad Nacional de Córdoba, Argentina and of the Rayalaseema University, Kurnool. He organized in August 2017, with a Local Organizing Committee, the 24th Congress and General Assembly of the International Union of Crystallography [2] in Hyderabad. He was awarded the Acharya P. C. Ray Medal of the University of Calcutta for 2015, in January 2018, for innovation in science and technology, and the ISA Medal for Science of the University of Bologna in October 2018.

Major research contributions

Desiraju's contribution to the subject of crystal engineering has focus on the concept of the supramolecular synthon, which is a small sub-structural unit that is an adequate enough representation of the entire crystal structure of a molecular solid. The major problem in crystal engineering is that the prediction of a crystal structure from a molecular structure is very difficult and not easily derivable from functional groups. Identification of supramolecular synthons simplifies this otherwise intractable problem. The supramolecular synthon concept is now widely used by crystal engineers in the design of molecular crystals and pharmaceutical co-crystals, which are important from scientific and commercial viewpoints. Crystal engineering is effectively like supramolecular synthesis in the solid state, and there is a direct analogy between the supramolecular synthon of Desiraju and the molecular synthon that was proposed for organic synthesis by E. J. Corey.

Desiraju's second area of contribution focuses on weakly activated groups like the C-H group can act as donors of hydrogen bonds in molecular and biomolecular systems. These weak hydrogen bonds had been discussed sporadically since the 1930s, but it was only after the 1980s that the idea of a weakly activated group forming hydrogen bonds gained acceptance in the chemical community. Desiraju was among the few structural chemists who argued in those early days that the C-H...O and other weak interactions have a hydrogen bond character.

Desiraju has authored around 425 research papers and a total of 483 publications as given in the Web of Science. In addition to the three books on crystal engineering and hydrogen bonding, he has edited three multi-author books on these topics in structural chemistry. He has guided the PhD work of nearly 40 students over the past 38 years.

General writing

Desiraju has authored several commentaries on science, the evolution of chemistry as a subject, emergence and complexity, and research habits and practices in various cultures. He has also written articles about the state of science education and research in India,[3], and about the current status of chemistry research in India, where he has identified problems and suggested solutions in situations that are, in part, expected in a country that is rooted in the traditional but yet aspires for the contemporary.

Desiraju strongly believes that if a sense of "Indian-ness" is inculcated in Indian students and young scientists, a modern competitive spirit and adherence to professionalism will enter the education and research area of India automatically. He feels that this essential spirit is now largely lacking and that it is the chief cause of the present sluggishness in our R&D sectors.

More is given in his web page at desiraju.in

ISI Ratings

His has written three books. His first (single author) book on crystal engineering (1989) has around 3000 cites. His second book (co-authored with Thomas Steiner in 1999) on the weak hydrogen bond has around 5000 cites. His third book is a textbook on crystal engineering (2010) and is co-authored with J. J. Vittal and A. Ramanan. His 1995 review in Angewandte Chemie has been cited more than 4000 times and is the paper with the second largest number of citations from India. Seven of his 479 publications have been cited 1000 or more times, 14 over 500, 41 over 200, and 81 over 100. As of June 2021, he has an h-index of 90 in Web of Science and this makes him the second most highly cited scientist in India, and the one with the highest m-index.

External links

• Desiraju Homepage