text: Greenwood was a senior research fellow at the Atomic Energy Research Establishment from 1951 until 1953 when he was appointed a lecturer at the University of Nottingham.  His first PhD student at Nottingham was Kenneth Wade (1954–1957).
  Professor William Wynne-Jones, who was the Chairman of the School of Chemistry at Kings College, Durham (which was to become the University of Newcastle upon Tyne in 1963), recruited Greenwood to the first established chair of inorganic chemistry in the country in 1961.
  Greenwood was appointed Professor and Head of the Department of Inorganic and Structural Chemistry at the University of Leeds in 1971, a post which he held until his retirement in 1990 when he was given the title Emeritus Professor.
  His wide-ranging researches in inorganic and structural chemistry have made major advances in the chemistry of boron hydrides and other main-group element compounds.  He also pioneered the application of Mössbauer spectroscopy to problems in chemistry.  He was a prolific writer and inspirational lecturer on chemical and educational themes, and has held numerous visiting professorships throughout the world. He was appointed by NASA as principal investigator in the study of lunar rocks. He served as chairman of the IUPAC Commission on Atomic Weights from 1970 to 1975 and also as president of the IUPAC Inorganic Chemistry Division.