Synthesis and Structure of Heterometallic Palladium and Iron Complexes

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).

Automated summary

In this study, a series of heterometallic palladium(II) complexes with ferrocenecarboxylic acid were synthesized and structurally characterized for the first time. The displacement of acetate anions by ferrocenecarboxylate anions during the synthesis process was observed.