Síntese e caracterização estrutural de clusters derivados de fenilcalcogenolato de cobre(I)

Abstract

In this work the synthesis and structural analysis of new copper(I) phenylchalcogenolate clusters will be presented. The reaction between sodium phenylchalcogenolate and copper(I) chloride generates a basic building block [Cu(EPh)]∞ (E= Se, Te) which reacts with N-donor bidentate ligands (bpy = 2,2 -bipyridine and phen = 1,10-phenantroline) to generate new compounds. Methodologies known in the literature include one-pot reaction of silyl-phenylchalcogenolates sources (PhESiMe3) with copper(I) salts and ancilliary phosphine ligands, as main route for synthesis of the clusters. This work will present how the formation of copper(I) phenylchalcogenolate in situ reveal itself as an alternate method for the synthesis of target compounds. Satisfactory results were obtained for [Cu6(bpy)2(μ-SePh)2(μ3-SePh)4]∙(THF) (1), {[Cu2(bpy)2(μ3-SePh)][CuCl2]}2 (2), {[Cu4(phen)3(μ-SePh)(μ3-SePh)(μ-Cl)][CuCl2]}2(PhSe)2 (3), [Cu3(bpy)3(μ4-TePh)3(CuCl)2] (4) and [Cu3(phen)3(μ3-TePh)3(CuCl)] (5). Structural analysis in solid state for these clusters were performed by X-ray diffraction. All the compounds obtained were additionally characterized by infrared spectroscopy and elemental analysis.