OPTISCH AKTIVE UEBERGANGSMETALL-KOMPLEXE. LXXXIII. KONFIGURATIONSSTABILE TETRAEDRISCHE NiNi'CC'-CLUSTER

Article abstract of DOI:10.1016/0022-328X(83)85029-3

The reaction of Ni(C5H5)2 and Ni(C5H4COOCH3)2 with the acetylene (-)-(R)-C6H5C<*>CCONHCH(CH3)(C6H5), "CC'", yields tetrahedral Ni2C2 clusters.Besides the compounds with two identical Ni corners (Ni2CC' types) also compounds with two different Ni corners (NiNi'CC' types) are formed.These consist of two diastereomers which, for a given (R)-configuration in the acid amide substituent, differ only in the cluster chirality.They are separated chromatographically and turn out to be configurationally stable with respect to a change of the cluster chirality.