International Union of Pure and Applied Chemistry
Organic Chemistry Division
Commission on Physical Organic Chemistry


(IUPAC Recommendations 1994)

Prepared for publication by P. Müller

Département de Chimie Organique, Université de Genève, CH-1211 Genève 4, Suisse

Membership of the Working Party 1987-93:

Chairman: P. Müller (Switzerland): Members: P. N. I. Ahlberg (Sweden), M. P. Doyle (USA), W. Drenth Netherlands), E. A. Halevi (Israel), R. A. Y. Jones (UK), J. M. McBride (USA), V. Minkin (USSR), M. Oki (Japan). Y. Takeuchi (Japan), J. R. Zdysiewicz (Australia).

World Wide Web version prepared by Gerard P. Moss
School of Physical and Chemical Sciences, Queen Mary University of London,
Mile End Road, London, E1 4NS, UK

With the assistance of Charles L. Perrin (

The definitions used in this glossary are identical to those in the published document, see P. Müller, Pure Appl. Chem., 66, 1077-1184 (1994) [Copyright IUPAC; reproduced with the permission of IUPAC]. If you use any of these definitions please cite this reference as their source. A PDF of the printed version is available.

See also translation into Finnish Fysikaalisen Orgaanisen Kemian Sansto Association of Finnish Chemical Societies, Helsinki, 1983 [ISBN 951-9223-20-7] [1982 edition]; into Polish Glosariusz terminów stosowanych w fizycznej chemii organicznej Zakład Naukowy im, Ossolińskich, Wroclaw, 1983 [ISBN 83-04-01536-6] [provisional version of 1979 edition]; into Russian Zh. Org. Khim., 1983, 19, 1562-1592; 1787-1812; 1988-2013. [provisional version of 1982 edition] (in ).
For problems in converting the text into a World Wide Web version see the IUPAC home page.

Any comments, corrections or suggestions for additional entries in a future edition should be e-mailed to

As well as an Introduction and index all terms are listed alphabetically in the following files: A; B; Ca to Cl; Co to Cy; D; E; F and G; H; I; K and L; M; N and O; P and Q; R; Sa to Sp; St to Sigma; T to Z. The references for each section are listed at the end of each file and the complete list of references is available as a separate file.

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