Mingos undertook
postdoctoral research at
Northwestern University (
Fulbright Fellow 1968–70) and at the
University of Sussex (
ICI Fellow 1970–71). From 1971 until 1976 he was a Lecturer at
Queen Mary, University of London. He then moved to the University of Oxford as
Fellow and Tutor at
Keble College and University Lecturer. From 1977 until 1992 he was also Lecturer at
Pembroke College, Oxford. In 1978, Mingos,
Stephen G. Davies and
Malcolm Green compiled a
set of rules that summarise where
nucleophilic additions will occur on pi ligands. Mingos' 1984 paper on the
polyhedral skeletal electron pair theory develops
Wade's electron counting rules for predicting the
molecular geometry of
cluster compounds. In 1990 he was appointed
Reader in Inorganic Chemistry and for the academic year 1991/92 he served as
Assessor. From 1992 until 1999 he worked at
Imperial College London as
Sir Edward Frankland BP Professor of Inorganic Chemistry (1992–99) and
Dean of the
Royal College of Science (1996–99). In 1999 Mingos was appointed Principal of
St Edmund Hall, Oxford and at the same time he became a visiting professor at
Imperial College London. In 2000 he received as a
Title of Distinction the title of professor of inorganic chemistry at the University of Oxford. He was superseded as principal by Professor
Keith Gull on 1 October 2009. With
David J. Wales he is the co-author of the textbook
Introduction to Cluster Chemistry. ==Honours and awards==