Rhenium(V) Tris(pyrazolyl)borate Complexes as Ligands in Square Planar Palladium and Platinum Complexes

Abstract

The reactions of TpReO(SnC3H7)2 (Tp = tris(pyrazolyl)borate anion) with acetonitrile complexes PdCl2(MeCN)2 and PtI2(MeCN)2 in toluene solutions resulted in the formation of new heterometallic rhenium complexes TpReO(µ-SnC3H7)2MX2 (MX2 = PdCl2 (I), MX2 = PtI2 (II)). A similar complex TpReO(µ-SnC3H7)2PdI2 (III) was formed either on treatment of I with NaI in dichloromethane or in the reaction of TpReO(SnC3H7)2 with a suspension of PdI2 in toluene. Complexes I–III were characterized by IR and NMR spectroscopy and by X-ray diffraction (CCDC nos. 2172225–2172227).