Synthesis and Structure of Heterometallic Palladium and Iron Complexes

Abstract Heterometallic palladium(II) complexes with ferrocenecarboxylic acid FcCOOH were synthesized and structurally characterized for the first time. The reactions of mononuclear [Pd(Py) 2 (OOCMe) 2 ] and [Pd(Phen)(OOCMe) 2 ] complexes with FcCOOH were accompanied by easy displacement of acetate anions from the inner sphere by the ferrocenecarboxylate anions to give iron-containing molecular palladium complexes: three solvatomorphs of [Pd(Py) 2 (FcCOO) 2 ] with benzene ( I , II ) and dichloromethane ( III ); the use of [Pd(Phen)(OOCMe) 2 ] as the starting compound resulted in the formation of the heteroligand acetate ferrocenecarboxylate [Pd(Phen)(FcCOO) 2 Pd(Phen)(FcCOO)(OOCMe)] ( IV ). Fully substituted [Pd(Phen)(FcCOO) 2 ] ( V ) was prepared by successive treatment of palladium acetate [Pd 3 (OOCMe) 6 ] with FcCOOH and 1,10-phenanthroline. The structures of complexes I – V were studied by X-ray diffraction (CIF files CCDC nos. 2078399–2078403).