base
A
chemical species
or
molecular entity
having an available pair of electrons capable of forming a
covalent bond
with a
hydron
(
proton
) (see
Brønsted base
) or with the vacant orbital of some other species (see
Lewis base
).
See also:
hard base
,
superbase
Source:
PAC, 1994,
66
, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1088
PAC, 1990,
62
, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2176