Dicarbonylcyclopentadienyltellurophenyliron complexes as ligands

Abstract

The reaction of CpFe(CO)2TePh (I) with ferricinium hexafluorophosphate as an oxidant affords ionic complex {[CpFe(CO)2]2(μ-TePh)}+PF6− (II) with the simultaneous formation of diphenylditellurium. The decarbonylation of compound II by Me3NO followed by the addition of complex I affords trinuclear complex {[CpFe(CO)2(μ-TePh)]2Fe(CO)Cp}PF6 (III). The corresponding tetrafluoroborate (IV) is synthesized similarly. The heating of compound I with PPh3 gives CpFe(CO)(PPh3)TePh (V) that reacts with ionic complex [CpMn(CO)2(NO)]PF6 (VI) to form binuclear heterometallic ionic complex [CpFe(CO)(PPh3)(μ-TePh)Mn(CO)(NO)Cp]PF6 (VII). A similar reaction of Cp′Fe(CO)2TePh (Cp′ is methylcyclopentadienyl) with compound VI affords heterometallic [Cp′Fe(CO)2(μ-TePh)Mn(CO)(NO)Cp]PF6 (VIII). The structures of compounds II, IV, VII, and VIII are determined by X-ray diffraction analysis (CIF files CCDC 963285, 963286, 963288, and 963289, respectively).