[Bi7M3(CO)3]2− (M = Co, Rh): a new architype of 10-vertex deltahedral hybrids by the unprecedented polycyclic η5-coordination addition of Bi73− and trimetallic fragments†
Abstract
Redox reactions of K5Bi4 and CpCo(CO)2/Rh(CO)2(acac) (acac = acetylacetonate) in ethylenediamine (en) yielded the first Bi73− adducts [Bi7M3(CO)3]2− (M = Co, 1a; Rh, 2a) that have a new architype 10-vertex deltahedral structure, resulting from the unprecedented polycyclic η5-coordination addition reaction of the Bi73− cage and three MCO+ fragments.