High-performance liquid chromatography of Group 6 dimetal decacarbonyl complexes singly-bridged by diphosphine ligands

Abstract

The normal-phase high-performance liquid chromatography of a series of Group 6 dimetal decacarbonyl complexes, of the form (OC)5M(P(CH2)(n)P)M(CO)5, where M = Cr, Mo and W, and P(CH2)(n)P = diphenylphosphinyl bridge with n = 2-6, is reported. Chromatography was carried out on a stainless steel column packed with silica to which polar amino-cyano groups have been bonded; hexane-chloroform was used as mobile phase. The retention behaviour of these homometallic complexes is discussed. | The normal-phase high-performance liquid chromatography of a series of Group 6 dimetal decacarbonyl complexes, of the form (OC)5M(P(CH2)nP)M(CO)5, where M = Cr, Mo and W, and P(CH2)nP = diphenylphosphinyl bridge with n = 2-6, is reported. Chromatography was carried out on a stainless steel column packed with silica to which polar amino-cyano groups have been bonded; hexane-chloroform was used as mobile phase. The retention behaviour of these homometallic complexes is discussed.