Complexes with Dative Bonds between d‐ and s‐Block Metals: Synthesis and Structure of [(Cy 3 P) 2 PtBe(Cl)X] (X=Cl, Me)

A platinum-beryllium adduct (see structure) was prepared by the reaction of [Pt(PCy(3))(2)] and BeCl(2). Treatment with methyllithium resulted in ligand substitution at the beryllium center. Both complexes were structurally characterized and display unprecedented two-center two-electron bonds between a transition metal and beryllium.