A @[email protected] or @[email protected] having an available pair of electrons capable of forming a @[email protected] with a @[email protected] (@[email protected]) (see @[email protected]) or with the vacant orbital of some other species (see @[email protected]).
See also:
hard base
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2176 [Terms] [Paper]
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1088 [Terms] [Paper]