No abstract

The reaction of 1 with 1,1-bis(diphenylphosphino)ethene (vdpp) gave the mononuclear cyclometalated compound 2. The withdrawing effect of the cyclopalladated moiety suffices to polarize the CdCH 2 double bond to afford the addition products 3-8, by treatment of complex 2 with primary aliphatic and aromatic amines. The molecular structures of 2, 4, and 8 have been determined by X-ray crystallography, showing that the C-C distance in 4 and 8 has the expected singlebond length upon addition.