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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)

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