Structure of a high-pressure hydroxide Ta2O5 • 2/3H2O and a derivative metastable oxide Ta2O5

被引：0
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作者：
Zibrov, IP
Filonenko, VP
Drobot, DV
Nikishina, EE
机构：
[1] Russian Acad Sci, Shubnikov Inst Crystallog, Moscow 117333, Russia
[2] Russian Acad Sci, Vereshchagin Inst High Pressure Phys, Troitsk 142092, Moscow Oblast, Russia
[3] Lomonosov Acad Fine Chem Technol, Moscow 117571, Russia
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2003年 / 48卷 / 04期
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D O I：
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中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
As a result of thermobaric processing of low-water amorphous tantalum hydroxide, a new high- pressure phase F-Ta2O5 . 2/3H(2)O has been prepared. This phase is structurally built of pleated planes of [TaO7] pentagonal bipyramids linked through columns of [TaO8] eight-vertex polyhedra. In channels formed by these planes and columns, chains of water molecules are accommodated. The removal of water from channels in the range of 220-550degreesC does not destroy the framework thus forming a new metastable phase F-Ta2O5.
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页码：464 / 471
页数：8
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