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Molybdenum (V) Phosphates: Structural Relationships and Classification

Molybdenum (V) Phosphates: Structural Relationships and Classification The structural relationships of eighteen Mo(V) phosphates are presented. The specific geometry of the MovC>6 octahedra is discussed. A classification of these phosphates into three families, involving isolated M0O6 octahedra, [M0O3]«, octahedral chains, and isolated M02O10 units, is proposed. This review suggests that, owing to the great adaptability of MoOö octahedra and PO4 tetrahedra, the chemistry of Mo(V) phosphates promises to reveal a host of interesting structural features. 77 Vol 13. No. 2,1993 1. INTRODUCTION Investigation of the molybdenum phosphates has shown the great ability of the phosphate matrix to stabilize pentavalent molybdenum. Recently, eighteen pentavalent molybdenum [1-18] phosphates corresponding to thirteen different mixed frameworks and one mixed valent molybdenum V/VI phosphate [18] have been synthesized at high temperature and their structure has been determined from single crystals. Comparisons of all the molybdenum phosphates involving pentavalent molybdenum have shown that, despite the original feature of the host lattices, they all exhibit many structural relationships and Table I - Mo(V) phosphates : crystallographic data and classification crude formula developed formula cell parameters space structural group family C2/c I αΚΜθ2Ρ3θΐ3 HI βΚΜο2Ρ3θΐ3 [2] α-Κ(ΜοΟ)2 a = 10.743 (2) A b = 14.0839 (9) β = 126.42 (1)° c« 8.8519 (7) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Reviews in Inorganic Chemistry de Gruyter

Molybdenum (V) Phosphates: Structural Relationships and Classification

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Publisher
de Gruyter
Copyright
Copyright © 1993 by the
ISSN
0193-4929
eISSN
2191-0227
DOI
10.1515/REVIC.1993.13.2.77
Publisher site
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Abstract

The structural relationships of eighteen Mo(V) phosphates are presented. The specific geometry of the MovC>6 octahedra is discussed. A classification of these phosphates into three families, involving isolated M0O6 octahedra, [M0O3]«, octahedral chains, and isolated M02O10 units, is proposed. This review suggests that, owing to the great adaptability of MoOö octahedra and PO4 tetrahedra, the chemistry of Mo(V) phosphates promises to reveal a host of interesting structural features. 77 Vol 13. No. 2,1993 1. INTRODUCTION Investigation of the molybdenum phosphates has shown the great ability of the phosphate matrix to stabilize pentavalent molybdenum. Recently, eighteen pentavalent molybdenum [1-18] phosphates corresponding to thirteen different mixed frameworks and one mixed valent molybdenum V/VI phosphate [18] have been synthesized at high temperature and their structure has been determined from single crystals. Comparisons of all the molybdenum phosphates involving pentavalent molybdenum have shown that, despite the original feature of the host lattices, they all exhibit many structural relationships and Table I - Mo(V) phosphates : crystallographic data and classification crude formula developed formula cell parameters space structural group family C2/c I αΚΜθ2Ρ3θΐ3 HI βΚΜο2Ρ3θΐ3 [2] α-Κ(ΜοΟ)2 a = 10.743 (2) A b = 14.0839 (9) β = 126.42 (1)° c« 8.8519 (7)

Journal

Reviews in Inorganic Chemistry – de Gruyter

Published: Jan 1, 1993

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