Heterometallic complexes with borole ligands

The borole-containing carbonylmetalates [(eta-C4H4BPh)Re(CO)(3)](-) ([Re](-)) and [(eta-C4H4BPh)Fe(CO)(2)H](-) ([Fe](-)) were used for the synthesis of heterometallic complexes with Re-Hg, Re-Cu, Re-Ag, Re-Au or Fe-Pt metal-metal bonds, respectively. The complex [Re]-Hg-[Re] 1 was characterized by X-ray diffraction and contains a linear metal chain. In the presence of HgCl2, redistribution reactions were observed, leading to [Re]-Hg-Cl 2 which was independently prepared from [Re](-) and an excess of HgCl2. The reaction of [Fe](-) with trans-[PtBr2(4-Mepy)(2)] (4-Mepy = 4-methylpyridine) afforded the trinuclear complex trans-[Pt[Fe](2)(4-Mepy)(2)] 6 which was characterized by X-ray diffraction and contains two hydrido ligands which bridge the Fe-Pt bonds.