Synthesis and study of mixed ligand monomer Cu(I) compounds with CuAs bonds. Crystal and molecular structure of bis(triphenylarsine)-(2-thioxohexamethyleneimine)copper(I) bromide
作者:P. Karagiannidis、P. Akrivos、A. Aubry、S. Skoulika
DOI:10.1016/s0020-1693(00)80921-4
日期:1991.10
A new series of mixed ligand coordination compounds with Cu-As bonds is synthesized by the reaction of Cu(AsPh3)3X, where X = Cl, Br, or [Cu(AsPh3)I]4 with 2-thioxohexamethyleneimine (omega-thiocaprolactam, tclH) in acetone or by the addition of triphenylarsine to Cu(tclH)2X in methanol/chloroform. The products of both reactions are formulated as Cu(tclH)(AsPh3)2X, on the basis of their elemental analyses, IR, H-1 NMR and UV-Vis spectral data. The crystal structure of the bromo compound is reported and discussed with respect to that of Cu(tclH)2(AsPh3)Br. The compound crystallizes in the monoclinic space group C2/c, with a = 41.981(8), b = 9.961(2), c = 19.087(2), angstrom, beta = 101.09(1)-degrees, 8 discrete molecules being present in the unit cell. The copper environment is a distorted tetrahedron, with two inequal Cu-As bonds, which are 2.411(2) and 2.372(2) angstrom, respectively. The Cu-Br and Cu-S bond lengths are equal to 2.456(3) and 2.313(4) angstrom, respectively, while the bond angles around copper vary from 104.4(0)-degrees for As1-Cu-S to 116.1(1)-degrees for As1-Cu-As2.