https://doi.org/10.1351/goldbook.C01060
An atom holding a set of
ligands
in a spatial arrangement which is not superposable on its mirror image. A
chirality
centre is thus a generalized extension of the concept of the
asymmetric carbon atom
to central atoms of any element, for example N+abcd, Pabc as well as Cabcd.
Source:
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2203 [Terms] [Paper]