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Hydrothermal synthesis and characterization of the tri-capped and mono-supported pseudo-Keggin-type tungstovanadophosphate: {PW4 VIW5 VV3 IVO40(VIVO)3[Cu(en)2]}6−
- Source :
-
Journal of Solid State Chemistry . Dec2007, Vol. 180 Issue 12, p3456-3462. 7p. - Publication Year :
- 2007
-
Abstract
- Abstract: A novel polyoxometalate [Cu(phen)2]3{PW4 VIW5 VV3 IVO40(VIVO)3[Cu(en)2]}⋅4H2O 1 (en=ethylenediamine, phen=1,10-phenanthroline) has been synthesized hydrothermally and characterized by elemental analysis, IR, XPS, TG, EPR and single-crystal X-ray diffraction analysis. The crystal structure analysis shows that compound 1 contains a novel highly reduced tri-capped and mono-supported pseudo-Keggin-type heteropolyanion, {PW4 VIW5 VV3 IVO40(VIVO)3[Cu(en)2]}6−, three [Cu(phen)2]2+ cations and four lattice water molecules. They are further linked to form three-dimensional supramolecular networks through extensive hydrogen bonding and π–π stacking interactions. Interestingly, the water dimer and terminal oxygen of the cluster polyanion constitute a beautiful supramolecular helix chain. The heteropolyanion is the first example of tri-capped and mono-supported pseudo-Keggin-type tungstovanadophosphate and the pH value is crucial for obtaining compound 1 in synthetic procedure. [Copyright &y& Elsevier]
- Subjects :
- *NONMETALS
*CHEMICAL elements
*ARSENIC
*BORON
Subjects
Details
- Language :
- English
- ISSN :
- 00224596
- Volume :
- 180
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 27781268
- Full Text :
- https://doi.org/10.1016/j.jssc.2007.09.018