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A novel niobium phosphate bronze with a tunnel structure, K3Nb6P4O26, membern=∞ of the series (K3Nb6P4O26) n· KNb2PO8

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A novel niobium phosphate bronze with a tunnel structure,

K3Nb6P4O26, membern=∞ of the series (K3Nb6P4O26) n·

KNb2PO8

Authors

A Benabbas, MM Borel, A Grandin, A Leclaire, B Raveau Publication date

1990/2/1 Journal

Journal of Solid State Chemistry Volume 84 Issue 2 Pages 365-374 Publisher Academic Press Description

A new niobium phosphate bronze with a tunnel structure K3Nb6P4O26 has been synthesized and its

structure has been determined from a single crystal by X-ray diffraction. It crystallizes in the space groupPnma witha = 14.7484(9)Å,b = 31.582(2)Å,c = 9.3859(6)Å. Its structure consists of

Nb3P2O13∞ layers sharing the corners of their NbO6 octahedra and PO4 tetrahedra. The geometry of

those layers derives from the hexagonal tungsten bronze and is compared to that of K7Nb14P9O60. This

oxide represents the membern = ∞ of the structural family (K3Nb6P4O26)n · KNb2PO8, whereas

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