The description of the identity and
connectivity (and corresponding bond multiplicities) of the atoms in a molecular entity (omitting
any distinction arising from their spatial arrangement).
Source:
PAC, 1996, 68, 2193
(Basic terminology of stereochemistry (IUPAC Recommendations 1996))
on page 2204
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1100