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.

引用

页码：627 / 637

页数：11

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