International Union of Pure and Applied Chemistry Organic Chemistry Division Commission on Physical Organic Chemistry* Glossary of Terms Used in Physical Organic Chemistry

ion moval of an atom (neutral or charged) from a molecular entity. For example: A chemical reaction or transformation, the main feature of which is the bimolecular reCH3COCH3 + (i-C3H7)2N(CH&OCH;?>+ (i-C3H7)2NH (proton abstraction from acetone) CH4 + C1' H3C' + HCl (hydrogen abstraction from methane) acceptor number (AN)