Pd Clusters Containing As and PPh₃ Ligands: The Structures of [Pd₉As₆ (PPh₃)₈], [Pd₂(As₂)(PPh₃)₄], and [Pd₂₀As₁₂ (PPh₃)₁₂]

Abstract

A Pd20 polyhedron all of whose surfaces are bridged by μ5-As atoms is one distinctive feature of 1, the title compound with the highest Pd content. Compound 1 was obtained upon treatment of [PdCl2(PPh3)2] with As(SiMe3)3. Other products of the reaction were the Pd2 and Pd9 complexes mentioned in the title as well, whereby the Pd9 complex also results from the reaction of [Pd3S2Cl2(PPh3)4] with As(SiMe3)3.