Synthesis, crystal structure, infrared spectrum and thermal behaviourof α-BaHPO₄

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• 作者：Henning A. Hö ; ppe ; Michael Daub ; Oliver Oeckler
• 关键词：Structure elucidation ; Barium ; Phosphate ; Infrared spectroscopy
• 刊名：Solid State Sciences
• 出版年：2009
• 出版时间：August 2009
• 年：2009
• 卷：11
• 期：8
• 页码：1484-1488
• 全文大小：428 K

文摘

The phosphate α-BaHPO₄ was synthesised as a single-phase crystalline powder starting from an aqueous solution of barium hydroxide and phosphorus pentoxide at 373 K. α-BaHPO₄ crystallises in a new structure type in which the Ba²⁺ ions form a distorted body-centred arrangement with the HPO₄⁻ anions in the quasi-octahedral voids (BaHPO₄, Aem2, Z = 16, a = 459.96(9), b = 22.809(5), c = 14.081(3) pm, wR₂ = 0.077, R₁ = 0.069, 1995 reflections, 102 parameters). The crystal structures of α-BaHPO₄ and β-BaHPO₄ are compared. The infrared spectrum and a thermal and thermogravimetric analysis of α-BaHPO₄ are also reported.