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Combination of lacunary polyoxometalates and high-nuclear transition-metal clusters under hydrothermal conditions. 5. A novel tetrameric cluster of [{Fe(II)Fe(III)(12)(mu(3)-OH)(12)(mu(4)-PO(4))(4)}(B-alpha-PW(9)O(34))(4)](22)(-).
- Source :
-
Inorganic chemistry [Inorg Chem] 2007 Dec 24; Vol. 46 (26), pp. 10944-6. Date of Electronic Publication: 2007 Dec 01. - Publication Year :
- 2007
-
Abstract
- A novel tetrameric cluster, (enH2)3.5H15[{FeIIFeIII12(mu3-OH)12(mu4-PO4)4}(B-alpha-PW9O34)4].83H2O (1; en = ethylenediamine), has been hydrothermally synthesized and characterized by IR, optical diffuse reflectance, thermogravimetric analysis, and single-crystal X-ray diffraction. The skeleton of 1 is composed of four tri-FeIII-substituted [FeIII3(mu3-OH)3(B-alpha-PW9O34)]3- Keggin moieties fused together through a FeII2O2 unit and four mu4-PO4 bridges, resulting in a unique tetramer with C2 symmetry. Magnetic measurements indicate that 1 reveals the antiferromagnetic interactions between FeII and FeIII centers.
Details
- Language :
- English
- ISSN :
- 0020-1669
- Volume :
- 46
- Issue :
- 26
- Database :
- MEDLINE
- Journal :
- Inorganic chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 18052059
- Full Text :
- https://doi.org/10.1021/ic701810t