Chandrasekhar is the Director of the National Institute of Science Education and Research, Bhubaneshwar, India. He is on a deputation from the Indian Institute of Technology, Kanpur. He obtained his PhD in 1982 at the Indian Institute of Science, Bangalore, India. He investigates main-group organometallic chemistry, inorganic rings, metal clusters and cages. He also works on materials with emphasis on catalysis, magnetism and photophysical properties. He is a fellow of the Indian National Science Academy, Indian Academy of Sciences and the National Academy of Sciences of India. His honours include the Shanti Swarup Bhatnagar Award by the Council of Scientific and Industrial Research, New Delhi, the Friedrich Wilhelm-Bessel Award by the Alexander von Humboldt Foundation, Germany, the JC Bose National Fellowship by the Dept. of Science and Technology, New Delhi and the SASTRA-CNR Rao award.