Reaction of [}CuCl(Bu 2tPH)} 4] with [Ru 3(CO) 12]: X-ray crystal structures of the chloride transfer products [Ru 3(CO) 7(μ-H)(μ-PBu 2t) 2(μ-Cl)] and the electron-rich 50-electron cluster [Ru 3(CO) 6(μ-PBu 2t)(μ-Cl) 3(Bu 2tPH

Abstract

Treatment of CuCl with Bu 2 t in hexane afforded a colourless crystalline material which was characterized as [}CuCl(Bu 2 t PH)} 4] ( 1) by an X-ray diffraction study. The reaction of 1 with [Ru 3(CO) 12] in refluxing toluene leads to a mixture of products containing the electron-rich chloro-bridged cluster [Ru 3(CO) 6(μ-PBu 2 t )(μ-Cl) 3(Bu 2 t PH)] ( 2) besides the electron-precise complexes [Ru 3(CO) 7(μ-H) (μ-PBu 2 t 2(μ-Cl)] ( 3) and [Ru 3(CO) 8(μ-H) 2(μ 3- PBu t)(Bu 2 tPH)] ( 4) , respectively. No cluster expansion products were observed, therefore, the copper complex acts merely as phosphine and chloride transfer reagent. The molecular structures of the metal clusters 2 and 3 were determined by means of single-crystal X-ray structure analyses.