MIT professor emeritus of chemistry Irwin Oppenheim, 84, of Cambridge, passed away on June 3 from complications following cardiac surgery.

Robert A. Alberty, professor emeritus in the Department of Chemistry and former dean of MIT’s School of Science — whose seminal contributions to the thermodynamics and kinetics of biochemical reactions are still at the forefront of chemistry — passed away on Saturday, Jan. 18, at the age of 92.