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Synthesis and characterization of two pentanuclear complexes (NEt4)2[MS4(CuBp)4] (M=Mo, W; Bp=H 2B(pyrazolyl)2) and crystal structure determination of (NEt4)2[WS4(CuBp)4]

Lookup NU author(s): Emeritus Professor Bill Clegg

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Abstract

Two new copper(I) complexes containing the [MS4]2- core (M=Mo or W) and anionic bis(pyrazolyl)borate (Bp) ligands have been prepared from the reactions of (Et4N)2[MS4], CuCl and KBp. In addition to elemental analysis, their IR, UV-Vis, 1H and 13C NMR spectra have been studied. The structure of (NEt4)2[WS4(CuBp)4] has been determined by single-crystal X-ray diffraction. In the pentanuclear dianion, [WS4(CuBp)4]2-, which has crystallographic S4 symmetry, the coordination environment around each copper atom is distorted tetrahedral, with two N donors of the bidentate Bp ligands and two S donors of the WS4 core, representing a structural model for some copper proteins. The W atom retains the tetrahedral geometry of the free [WS4]2- anion. © 2003 Elsevier Ltd. All rights reserved.


Publication metadata

Author(s): Sadr MH, Clegg W, Bijhanzade HR

Publication type: Article

Publication status: Published

Journal: Polyhedron

Year: 2004

Volume: 23

Issue: 4

Pages: 637-641

ISSN (print): 0277-5387

ISSN (electronic): 1873-3719

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.poly.2003.11.039

DOI: 10.1016/j.poly.2003.11.039


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