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Crystal structures and EPR spectra of Cu2+ -Doped magnesium(II) and cadmium(II) methoxyacetates


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Hitchman, MA and Hockless, DCR and Skelton, BW and Stratemeier, H and White, AH (2007) Crystal structures and EPR spectra of Cu2+ -Doped magnesium(II) and cadmium(II) methoxyacetates. Zeitschrift fur Anorganische und Allegemeine Chemie, 633 (11-12). pp. 2004-2008. ISSN 0044-2313

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Magnesium methoxyacetate crystallizes from aqueous solution as a dihydrate, isomorphous with its nickel(II) and copper(II) counterparts, the six-coordinate metal atoms being disposed on crystallographic inversion centres in space group P21/n. The cadmium complex is anhydrous, the six-coordinate metal atoms being linked into a two-dimensional polymer parallel to the ab plane in space group P21/c by bridging coordination through carboxylate oxygen atoms. The powder EPR spectra of traces of Cu2+ doped into the magnesium(II) and cadium(II) compounds show slight temperature dependences, with the higher two g-values converging as the temperature is raised from 77 K to 290 K. This is analysed in terms of an equililibrium between complexes having similar geometries, but with the long and intermediate bond directions interchanged. The behaviour is in contrast to that of the pure copper(II) complex, where the thermal properties appear to be influenced by cooperative interactions.

Item Type: Article
Keywords: Magnesium, Cadmium, Carboxylato complexes, X-ray Crystal structure, EPR
Journal or Publication Title: Zeitschrift fur Anorganische und Allegemeine Chemie
Publisher: Wiley-VCH
Page Range: pp. 2004-2008
ISSN: 0044-2313
Identification Number - DOI: 10.1002/zaac.200700288
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The definitive published version is available online at:

Date Deposited: 07 Apr 2008 14:16
Last Modified: 18 Nov 2014 03:34
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