Journal
POLYHEDRON
Volume 22, Issue 23, Pages 3091-3095Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0277-5387(03)00464-9
Keywords
polyoxometallates; octamolybdates; Keggin-type anions; imidazole ligands; copper
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Two new compounds, [CU(imi)(2)(H2O)(4)][Himi](2)[(imi)(2)Mo8O26] (1) and [Himi](3)[H3O][SiMo12O40].H2O (2) (imi = imidazole), have been synthesized and characterized by single crystal X-ray analysis, IR spectra and elemental analysis. Compound 1 consists of an imidazole-coordinated octamolybdate anion, two protonated imidazole cations and one imidazole and water coordinating copper cation per unit cell. Compound 2 is built up of the Keggin-type [SiMo12O40](4-) anions, protonated imidazole cations, hydroxonium ions and lattice water molecules. Both compounds 1 and 2 are three-dimensional frameworks held together by complex hydrogen bonding. (C) 2003 Elsevier Ltd. All rights reserved.
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