ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Properties of chlorocopper(II) complexes with triphenylphosphine, -arsine, or -stibine type ligands in solution. I. Spectrophotometric study of formation and redox decomposition of the complexes

D. Valigura, G. Ondrejovič, D. Makáňová, and J. Gažo

Lehrstuhl für Anorganische Chemie der Slowakischen Technischen Hochschule, S80 37 Bratislava

Abstract:  The reaction of Ph₃P and Ph₃AS with copper(II) chloride in acetone yields complexes with the molar ratio of Ph₃P : Cu(II) = 1 : 1 and Ph₃AS : Cu(II) = 3 : 1 , respectively, that undergo redox processes and decomposition. Ph₃Sb immediately reduces CuCI₂ t o give CuCl and Рb₃SbCl₂. The rate of the Cu(II) reduction found by means of spectrophotometry decreases in the order Ph₃Sb> Ph₃P > Ph₃As. The unexpected position of PhsSb in this order is explained by a different reaction mechanism; t h e influence of dative л bonds between Ph₃E (E = P, As, Sb) and Cu(II) on t h e course of the redox processes t h a t the complexes formed undergo, is investigated.

Full paper in Portable Document Format: 285a599.pdf (in German)

Chemical Papers 28 (5) 599–603 (1974)