Heterobimetallic complexes from addition of molybdo- or tungstophosphine ligands to metal halides and by oxidative addition of molybdo- or tungsto-aryl iodides to low-oxidation state metal species

Summary Reaction of M{HB(Me₂pyz)₃}(NO)X{NH(CH₂)₃PPh₂}] M=Mo, X=I; M=W, X=Cl; HB(Me₂pyz)₃=tris(3,5-dimethylpyrazolyl)borate] with Rh₂(CO)₄Cl₂], HgI₂ and CdCl₂ gave {M{HB(Me₂pyz)₃}(NO)XNH(CH₂)₃PPh₂]}₂-Rh(CO)Cl] and {Mo{HB(Me₂pyz)₃}(NO)INH(CH₂)₃-PPh₂]}₂MX₂] (M=Hg, Y=I; M=Cd, Y=Cl). The di- or poly-meric species Mo{HB(Me₂pyz)₃}(NO)I(p-OC₆H₄-HgCl)]_n is reported, and reaction of Mo{HB(Me₂pyz)₃}-(NO)I(p-NHC₆ H₄I)] with Pd(PPh₃)₄] and Pt(C₂H₄)(PPh₃)₂] afforded Mo{HB(Me₂pyz)₃}(NO)I{NHC₆H₄M(PPh₃)₂X}] (M=Pd, X=Br, I; M=Pt, X=I).