Author： Leclaire A. Borel M.M. Chardon J. Raveau B.
Publisher： Academic Press
ISSN： 0022-4596
Source： Journal of Solid State Chemistry, Vol.128, Iss.2, 1997-02, pp. : 191-196
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Abstract
A new molybdenotungsten monophosphate (Mo x W 2- x )O 3 (PO 4 ) 2 has been synthesized for 0< x <1.25. The crystal structure of the phase MoWO 3 (PO 4 ) 2 has been determined. This phase crystallizes in the P 2 1 / m space group with a =7.827(1) A, b =12.538(1) A, c =7.833(1) A, beta=92.36(1)#°. The structure can be described from the assemblage of two kinds of [ M PO 8 ] [infinity] chains running along b, with a cis and trans orientation of the PO 4 tetrahedra. Another description which consists of the stacking of two different sorts of [ M 2 P 2 O 15 ] [infinity] , layers along b is also presented that involves two sorts of bioctahedral units " M 2 O 11 " with the perovskite and HTB configurations, respectively.
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