hard base
Also contains definition of
: soft base
A
Lewis base
with a donor centre (e.g. an oxygen atom) of low
polarizability
the converse applies to soft bases.
See also:
hard acid
Source:
PAC, 1994,
66
, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1120