 He held several positions at the California Institute of Technology, including Division Chairman of Chemistry and Chemical Engineering from 1963–68, Dean of the Faculty and Provost from 1980–83 and Institute Professor of Chemistry, Emeritus (1988-2016) in the Division of Chemistry and Chemical Engineering.He is credited with bringing the first female graduate student, Dorothy Semenow, to Caltech when he moved from MIT.He was a consultant for DuPont Central Research (1950-2008) and for Oak Ridge.