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

被引：0
|
作者：
Choudhury, Amitava [1 ,2 ]
Natarajan, Srinivasan [1 ]
机构：
[1] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Jakkur PO, Bangalore 560064, India
[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, India
来源：
JOURNAL OF CHEMICAL SCIENCES | 1999年 / 111卷 / 05期
关键词：
Open-framework materials; adsorption; reversible dehydration; antiferromagnetism; structure-directing agents;
D O I：
10.1007/BF02869118
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 spacegroupP2(1)/n. (a=9 & BULL;845(1),b=9 & BULL;771(3),c=9 & BULL;897(1),& beta;=102 & BULL;9 & DEG;,V=928 & BULL;5(1),Z=4,M=372 & BULL;2,d(calc)=2 & BULL;02 g cm(-3) andR=0 & BULL;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
收藏
页码：627 / 637
页数：11
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