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Synthesis and Structural Characterization of AMV2O8 (A = K, Rb, Tl, Cs; M = Nb, Ta) Vanadates: A Structural Comparison of A(+)M(5+)V2O8 Vanadates and A(+)M(5+)P2O8 Phosphates

Synthesis and Structural Characterization of AMV2O8 (A = K, Rb, Tl, Cs; M = Nb, Ta) Vanadates: A Structural Comparison of A(+)M(5+)V2O8 Vanadates and A(+)M(5+)P2O8 Phosphates

Anil Kumar Paidi, R Nandini Devi, Kanamaluru Vidyasagar

Dalton Trans. 2015 Oct 21;44(39):17399-408.

PMID: 26390384

Abstract:

Eight new quaternary vanadates of niobium and tantalum, AMV2O8 (A = K, Rb, Tl, Cs; M = Nb, Ta), have been prepared by solid state reactions and structurally characterized by single crystal and powder X-ray diffraction (XRD) techniques. The two cesium compounds, unlike the known CsSbV2O8 with a layered yavapaiite structure, have a new three-dimensional structure and the other six compounds possess the known KSbV2O8 structure type. The three types of [(MV2O8)(-)]∞ anionic frameworks of twelve A(+)M(5+)V2O8 (A = K, Rb, Tl, Cs; M = Nb, Ta, Sb) vanadates could be conceived to be built by different connectivity patterns of M2V4O18 ribbons, which contain MO6 octahedra and VO4 tetrahedra. A structural comparison of these twelve vanadates and the nineteen A(+)M(5+)P2O8 phosphates has been made. The spectroscopic studies of these eight new quaternary vanadates are presented.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP14644554	Cesium metavanadate		14644-55-4	Price

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