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Crystal structure of the Molybdenum(V) Diphosphate KMoP 2 O 8 isotypic with KNbP 2 O 8
Author(s) -
Gueho C.,
Borel M. M.,
Grandin A.,
Leclaire A.,
Raveau B.
Publication year - 1992
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19926150921
Subject(s) - molybdenum , crystallography , octahedron , crystal structure , group (periodic table) , x ray crystallography , phase (matter) , chemistry , diffraction , materials science , inorganic chemistry , physics , optics , organic chemistry
A new molybdenum(V) diphosphate KMoP 2 O 8 has been isolated. The single crystal X‐ray diffraction study of this phase has shown that it is isotypic with KNbP 2 O 8 . It crystallizes in the P2 1 /n space group a = 5.0862(4), b = 11.720(1), c = 11.486(1) Å, β = 90.91(1)°. The structure of this phase is compared with those of other molybdenum(V) diphosphates. This tunnel structure is described in terms of [MP 2 O 8 ] 8 ∞ ribbons running along ā, showing close relationships with the titanophosphate NaTiP 2 O 7 . The existence of one free apex for each MoO 6 octahedron and each P 2 O 7 group, respectively, is emphasized, allowing a great flexibility of the structure.