Bis(dibenzo[c.e][1,2]oxaphosphorino)dichloroplatinum Complexes

Reaction of a series of P-amino and P-cycloalkoxy dibenzo[c.e][1,2]oxaphosphorines (1), (3) and (5) with cis-bis(benzonitrile)dichloroplatinum(II) afforded the title bis(dibenzooxaphosphorino) complexes (2), (4) and (6), respectively. In the case of chiral P-substituents, the complexes (4) and (6) were obtained in homo and heterochiral forms. Stereospecific ^sup 1^J(^sup 195^Pt-P) couplings found in the ^sup 31^P-n.m.r. spectra of the products (2), (4) and (6) suggested the cis orientation of the identical substituents.[PUBLICATION ABSTRACT]