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Issue 16, 1998
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A thiocyanato-bridged layer structure composed of symmetrical, dithiocyanato(N,S)-bridged dimers of heterotrinuclear alkoxo-bridged Cu2Pb units; synthesis from zerovalent copper, structural, spectroscopic and magnetic studies

Abstract

A novel mixed-metal compound [{Cu2Pb(SCN)3L3}2] has been prepared from zerovalent copper and lead thiocyanate in an acetonitrile solution of 2-dimethylaminoethanol (HL). The compound, which crystallizes in the monoclinic space group P 21/c with a = 14.5786(1), b = 17.4145(2), c = 10.5194(1) Å, β = 105.11(1)° and Z = 4, has been characterized by a range of spectroscopic methods. The crystal structure contains symmetrical dimers of heterotrinuclear alkoxo-bridged Cu2Pb units in which dimerization has occurred through bridging of NCS via the axial positions on the copper ions. The so-formed hexanuclear units are linked by Pb  · · ·  S interactions between adjacent units to form layered supramolecular assemblies along the b axis of the crystal. The magnetic behaviour can be understood on the basis of the structure, and corresponds to that of a weakly antiferromagnetically coupled dinuclear unit. The small value of the antiferromagnetic coupling can be explained by the roof-shaped CuO2Cu unit, which prevents the magnetic orbitals from undergoing significant overlap.

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Article type: Paper
DOI: 10.1039/A802076K
Citation: J. Chem. Soc., Dalton Trans., 1998, 2735-2738
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    A thiocyanato-bridged layer structure composed of symmetrical, dithiocyanato(N,S)-bridged dimers of heterotrinuclear alkoxo-bridged Cu2Pb units; synthesis from zerovalent copper, structural, spectroscopic and magnetic studies

    L. A. Kovbasyuk, O. Yu. Vassilyeva, V. N. Kokozay, O. Yu. V. V. N. K. W. L. J. R. B. W. S. A. G. O., W. Linert, J. Reedijk, B. W. Skelton and A. G. Oliver, J. Chem. Soc., Dalton Trans., 1998, 2735
    DOI: 10.1039/A802076K

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