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A Vanadium (V) Hydroxymonophosphate Hydrate with a “Tape-Like” structure: K3(VO2)2PO4PO3OH·H2O

✍ Scribed by A. Leclaire; M.M. Borel; B. Raveau


Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
495 KB
Volume
163
Category
Article
ISSN
0022-4596

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✦ Synopsis


A new vanadium (V) hydroxymonophosphate hydrate, K 3 (VO 2 ) 2 PO 4 PO 3 OH ' H 2 O, with a 99tape-like:: structure has been synthesized. This compound crystallizes in the space group P2 1 /c with a ‫؍‬ 5.099( 1) A > , b ‫؍‬ 29.168(3) A > , c ‫؍‬ 8.115(1) A > , ‫؍‬ 91.65(1)3. Its structure consists of [V 2 P 2 O 11 OH] ribbons built up of corner-sharing VO 5 pyramids, PO 4 , and PO 3 OH tetrahedra, interleaved with K ؉ ions and H 2 O molecules. In spite of its unidimensional character, this structure forms pentagonal tunnels. Relationships with frameworks involving tetragonal tunnels are studied. 2002 Elsevier Science (USA)


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A vanadium (V) monophosphate, KV 2 O 4 PO 4 , with an original tunnel structure has been synthesized. It crystallizes in the space group Pn2 1 a, with a ‫؍‬ 13.924(1) A s s , b ‫؍‬ 19.946(1) A s s , c ‫؍‬ 4.749(1) A s s . The [V 2 PO 8 ] framework consists of 903 3 oriented [V 2 O 8 ] pyramidal chai