Phosphomolybdate clusters as molecular building blocks in the design of one-, two- and three-dimensional organic-inorganic hybrid materials
- Department of Chemistry, Syracuse University, Syracuse, NY 13244 (United States)
An attractive approach to the design of inorganic solids exploits the tethering of inorganic clusters through organic spacers to produce hybrid materials with composite properties. We have recently described a modified strategy in which polyoxometalate clusters are linked through organic subunits to give an anionic hybrid substructure which may be further modified through the introduction of secondary metal-ligand complex (SMLC) cations, serving as a third component building block. In this application, the molybdophosphonate cluster {l_brace}Mo{sub 5}O{sub 15}(O{sub 3}PR){sub 2}{r_brace}{sup 4-} serves as a secondary building unit (SBU) with alkyl (CH{sub 2}) {sub n} or aromatic -(C{sub 6}H{sub 4}) {sub n} - tethers providing one-dimensional structural expansion. A binucleating ligand such as tetrapyridylpyrazine (tpyprz) is used to bridge secondary metal sites into a binuclear {l_brace}Cu{sub 2}(tpyprz){r_brace}{sup 4+} SBU which may link phosphomolybdate clusters into two- or three-dimensional structures. The influence of a variety of structural determinants is discussed, including the tether length of the diphosphonate ligand, the coordination preferences of the secondary metal, expansion of the ligand component of the SMLC, and substitution of As for P in the oxide SBU.
- OSTI ID:
- 20729047
- Journal Information:
- Journal of Solid State Chemistry, Vol. 178, Issue 8; Other Information: DOI: 10.1016/j.jssc.2005.05.013; PII: S0022-4596(05)00217-3; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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