CYANOGEN ACTIVATION BY COORDINATED BIS(DIPHENYLPHOSPHINO)METHANIDE - THE LIGAND [(PPH(2))(2)CCN](-) AS A BUILDING-BLOCK IN THE SYNTHESIS OFHETEROMETALLIC COMPLEXES

The new cyanodiphosphinomethanide complex fac-[Mn(CN(t)Bu)(CO)(3){(PPh (2))(2)CCN}] (2) has been prepared by treatment of fac-[Mn(CN(t)Bu)(CO )(3){(PPh(2))(2)-CH}] (1) with cyanogen, 2 has shown to be a valuable substrate for the synthesis of heterometallic species; thus, by coordi nation, of some additional metallic fragments through the free nitroge n atom of the cyano group, the new heterometallic complexes c-[Mn(CN(t )Bu)(CO)(3)-{(Ph(2)P)(2)CCNAuPPh(3)}]PF6 (5) and fac-[{Mn(CN(t)Bu)-(CO )(3){(Ph(2)P)(2)CCN}}Cu-2]BF4 (6) have been obtained.