Cluster Synthesis. 46. New Mixed-Metal Complexes of the Layer-Segregated Cluster Pt3Ru6(CO)21(μ3-H)(μ-H)3

Abstract

The reaction of the dianion [Pt3Ru6(CO)21(μ-H)2]2-, generated in situ by the deprotonation of [Pt3Ru6(CO)21(μ-H)3(μ3-H)], 1, with [Cp*Ir(NCMe)3]2+ and HgI2, has yielded two new higher nuclearity cluster complexes Pt3Ru6(CO)21(μ3-IrCp*)(μ3-H)2, 5, and [NBu4][Pt3Ru6(CO)21(μ3-HgI)(μ3-H)2], 6, in the yields 15% and 35%, respectively. Both compounds were characterized by single-crystal X-ray diffraction analysis. They both contain layer segregated triangular Pt3 and Ru3 groupings stacked one upon the other with the Pt3 group in the center. The heterometal atom occupies a triply bridging position across one of the Ru2Pt triangles. The hydride ligands have adopted triply bridging positions on the two Ru3 triangles.