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Issue 7, 2010
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An extremely rare example of asymmetric tetranuclear core {M43-X)2(μ-X)4} in a novel alkoxo-bridged heterometallic Cr/Cd complex

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Abstract

A novel heterometallic tetranuclear complex [Cr3Cd(NCS)4(H2tea)(Htea)3]·3CH3OH (1) has been prepared using cadmium oxide, Reinecke’s salt, ammonium thiocyanate and a methanol solution of triethanolamine (H3tea) in air. Crystallographic investigations reveal that the molecular structure of the complex is based on an uncommon asymmetric {Cr3Cd(μ3-O)2(μ-O)4} core with firstly observed terminal coordination of the NCS-groups in such molecular structure type. A network of O–H⋯O hydrogen bonds as well as S⋯S interactions link the molecules into a two-dimensional supramolecular network. Variable-temperature (1.8–300 K) magnetic susceptibility measurements show a change of the μB value at low temperature, indicative of antiferromagnetic interactions (J = −7.45 cm−1) between chromium(III) centers.

Graphical abstract: An extremely rare example of asymmetric tetranuclear core {M4(μ3-X)2(μ-X)4} in a novel alkoxo-bridged heterometallic Cr/Cd complex

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Article information


Submitted
12 Aug 2009
Accepted
26 Oct 2009
First published
21 Dec 2009

Dalton Trans., 2010,39, 1734-1739
Article type
Paper

An extremely rare example of asymmetric tetranuclear core {M43-X)2(μ-X)4} in a novel alkoxo-bridged heterometallic Cr/Cd complex

V. V. Semenaka, O. V. Nesterova, V. N. Kokozay, V. V. Dyakonenko, O. V. Shishkin, R. Boca and J. Jezierska, Dalton Trans., 2010, 39, 1734
DOI: 10.1039/B916568A

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