Complexes with Dative Bonds between d- and s-Block Metals: Synthesis and Structure of [(Cy3P)2PtBe(Cl)X] (X = Cl, Me)

摘要

The chemistry of beryllium has developed in parallel with the awareness of the toxicity of beryllium compounds. Therefore,; investigations on beryllium are severely limited, in contrast to its neighboring elements. Recent research has focused on applications in material sciences, owing to the unique properties of beryllium-containing materials, and on the coordination chemistry of Be~(II) in aqueous solutions with regard to its toxicity. The coordination of ligands with neutral main-group donor substituents to Be, which mostly results in the formation of tetrahedral, four-coordinate species, is well-established.Tricoordinate beryllium complexes were discovered as early as their tetracoordinate counterparts, but they are far less numerous. In addition to these species with dative Be-E bonds (E = main-group element), beryllium-containing clusters have attracted further interest. While some of these clusters contain transition metals, in particular Zr, electron-precise bonds between beryllium and transition metals are unknown to date.