[(TeMe2)Mn(CO)4(μ5-Te)(μ4-Te)Mn4(CO)12]−: A Pentacoordinate Bridging Tellurido Ligand in a Square-Pyramidal Geometry

The first Te–Mn–CO clusters were obtained by the thermal reaction of K₂TeO₃ with Mn₂(CO)₁₀] in MeOH. The basicity of the μ₄-Te ligand in the octahedral cluster anion (μ₄-Te)₂Mn₄(CO)₁₂]²⁻ is demonstrated by its binding to the fragment (TeMe₂)Mn(CO)₄]⁺ in an axial fashion to afford the novel cluster 1 .