Abstract
Two novel tungstovanadophosphate derivatives, namely [Fe(phen)3]2[PW VI8 VVV IV5 O42] · H2O (1) and [Fe(phen)3]2[PW9V3O40] (2), were synthesized under hydrothermal conditions, and characterized by elemental analysis, IR, ESR, XPS, TGA, and single-crystal X-ray diffraction analysis. The crystal structure analyses reveal that the ‘mixed-addenda’ Keggin polyoxoanion in 1 is decorated with VO2+ units, such that four V atoms are disordered over eight metal sites; the anion in compound 2 has a typical Keggin structure with three V atoms disordered over 12 metal sites. The two compounds are ionic crystals with slightly different packing modes for the polyoxoanions and [Fe(phen)3]3+ cations. π–π stacking interactions between phen molecules, weak hydrogen bonding interactions between phen ligands and polyoxoanions, and electrostatic forces lead to an extended 3D supramolecular framework.
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Ma, FX., Chen, YG., Shi, DM. et al. Hydrothermal synthesis and characterization of two novel tungstovanadophosphate derivatives. Transition Met Chem 33, 697–703 (2008). https://doi.org/10.1007/s11243-008-9099-2
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DOI: https://doi.org/10.1007/s11243-008-9099-2