A synthetic iron phosphate mineral, spheniscidite, [NH4]+[Fe2(OH)(H2O)(PO4)2]-H2O, exhibiting reversible dehydration

被引：0
|
作者：
Choudhury, A
Natarajan, S
机构：
[1] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India
[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India
来源：
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES | 1999年 / 111卷 / 05期
关键词：
open-framework materials; adsorption; reversible dehydration; antiferromagnetism; structure-directing agents;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Spheniscidite, a synthetic iron phosphate mineral has been synthesized by hydrothermal methods. The material is isotypic with another iron phosphate mineral, leucophosphite. Spheniscidite crystallizes in the monoclinic spacegroup P2(1)/n. (a = 9.845(1), b = 9.771(3), c = 9.897(1), beta = 102.9 degrees, V = 928.5(1), Z = 4, M = 372.2, d(calc) = 2.02 g cm(-3) and R = 0.02). The structure consists of a network of FeO6, octahedra vertex-linked with PO4 tetrahedra forming 8-membered one-dimensional channels in which the NH4+ ions and H2O molecules are located. The material exhibits reversible dehydration and good adsorption behaviour. Magnetic susceptibility measurements indicate that the solid orders antiferromagnetically.
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页码：627 / 637
页数：11
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