Synthesis and characterization of a reduced heteropoly-tungstovanadate: (NH < inf > 4 < /inf > ) < inf > 7 < /inf > [V < sup > V < /sup > O < inf > 4 < /inf > W < inf > 10 < /inf > < sup > VI < /sup > V < inf > 2 < /inf > < sup > IV < /sup > O < inf > 36 < /inf > ]·ca. 22H < inf > 2 < /inf > O

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dc.contributor.author Shivaiah, Vaddypally
dc.contributor.author Das, Samar K.
dc.date.accessioned 2022-03-27T08:44:53Z
dc.date.available 2022-03-27T08:44:53Z
dc.date.issued 2002-01-01
dc.description.abstract The compound (NH4)7[VVO4 W10VIV2IV O36]·ca. 22H2O (1) has been synthesized from an aqueous ammonium acetate buffer (pH 4) containing sodium vanadate, sodium tungstate and sodium dithionite. Compound (1) crystallizes in a cubic space group Fm3̄, with a = 22.2001(6) Å and Z = 8. The anion [VVO4 W10VIV2IV O36]7- is a typical Keggin type structure with VVO4 as the central tetrahedron. (1) has further been characterized by elemental analyses, redox titration, IR, EPR, and electronic spectroscopy and room temperature magnetic moment measurement.
dc.identifier.citation Proceedings of the Indian Academy of Sciences: Chemical Sciences. v.114(2)
dc.identifier.issn 02534134
dc.identifier.uri 10.1007/BF02704303
dc.identifier.uri http://link.springer.com/10.1007/BF02704303
dc.identifier.uri https://dspace.uohyd.ac.in/handle/1/11679
dc.subject Crystal structure
dc.subject Heteropolytungstovanadate
dc.subject Keggin type anion
dc.subject Reduction
dc.subject Spectral characterization
dc.title Synthesis and characterization of a reduced heteropoly-tungstovanadate: (NH < inf > 4 < /inf > ) < inf > 7 < /inf > [V < sup > V < /sup > O < inf > 4 < /inf > W < inf > 10 < /inf > < sup > VI < /sup > V < inf > 2 < /inf > < sup > IV < /sup > O < inf > 36 < /inf > ]·ca. 22H < inf > 2 < /inf > O
dc.type Journal. Article
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