A dimeric polyoxometalate sandwich motif containing a truncated {Mn3O4} cubane core

Mitchell, S.G., Miras, H.N. , Long, D.L. and Cronin, L. (2010) A dimeric polyoxometalate sandwich motif containing a truncated {Mn3O4} cubane core. Inorganica Chimica Acta, 363(15), pp. 4240-4246. (doi:10.1016/j.ica.2010.07.020)

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Abstract

A novel sandwich-type silicotungstate motif, K(18)[Mn(2)(II){Mn(II)(H(2)O)(5)Mn(3)(III)(H(2)O)(B-beta-SiW(9)O(34))(B-beta-SiW(6)O(26))}2]center dot 20H(2)O 1, has been isolated from the reaction of K(8)[gamma-SiW(10)O(36)]center dot 12H(2)O and manganese ions in aqueous acidic media. The transition metal-substituted polyoxometalate (TMSP) 1 has been fully characterized by single-crystal X-ray diffraction, elemental analysis, thermogravimetric analysis, and infrared spectroscopy. This dimeric polyanion consists structurally of the sandwich polyanion {Mn(II)(H(2)O)(5)Mn(3)(III)(H(2)O)(B-beta-SiW(9)O(34))(B-beta-SiW(6)O(26))}, dimerized via two manganese(II) linker ions. Each monomeric unit is composed of two non-equivalent Keggin fragments, (B-beta-SiW(8)O(31)) and (B-beta-SiW(6)O(26)), linked to each other via three manganese ions resulting in a truncated {Mn(3)O(4)} cubane core. Experimental, structural, and electrochemical aspects of the material are reported and discussed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Moiras, Dr Haralampos and Long, Dr Deliang and Cronin, Professor Lee
Authors: Mitchell, S.G., Miras, H.N., Long, D.L., and Cronin, L.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Inorganica Chimica Acta
ISSN:0020-1693
Published Online:17 July 2010

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