Crystals of bis[(S)-prolinamidato]copper(II) have been prepared and th
eir structure determined by X-ray crystallography. The Cu coordination
is tetrahedrally distorted square planar. An O atom of a molecule rel
ated by a twofold screw axis interacts weakly with Cu(II), serving as
a bridging element to form a polymeric structure. A new chiral centre
of (S) configuration is produced at the amino N atom on coordination t
o Cu(II).