Keiji Morokuma (1934-2017).

Keiji Morokuma, William Henry Emerson Professor Emeritus of Emory University and Research Leader at the Fukui Institute for Fundamental Chemistry, Kyoto University, passed away at the age of 83 on November 27, 2017. Morokuma made numerous contributions to theoretical methodologies for the determination of reaction mechanisms and the understanding of intermolecular interactions.