Carbene or zwitterion? Competition in organoplatinum complexes.
The reaction of a known dimeric dicarbene complex of platinum with a number of ligands results in four new platinum complexes. The structure of the new complexes is described: one complex must exist as a neutral complex with no charge separation, and the other three are assigned a charge-separated (zwitterionic) structure, rather than a carbene form, on the basis of comparative 13C NMR shifts.
Newman
Christopher P
CP
Department of Chemistry, University of Warwick, Coventry, UKCV4 7AL.
Clarkson
Guy J
GJ
Alcock
Nathaniel W
NW
Rourke
Jonathan P
JP