The chirality command reports the R/S chirality of each four-substituent atom in atom-spec, typically sp3-hybridized carbons (atom type C3) although other elements may occasionally qualify. Each is reported as R, S, or not chiral in the Log. The current implementation includes only the simpler Cahn-Ingold-Prelog rules and will fail in complicated cases such as when one center's assignment depends on the chiralities of other centers in the molecule. Further, bond orders are guessed from atom types.
To invert a chiral center, see build invert. See also: Build Structure, measurements