A Synthetic Iron Phosphate Mineral, Spheniscidite, [NH₄]+[Fe₂(OH)(H₂O)(PO₄)₂]-·H₂O, Exhibiting Reversible Dehydration

Abstract

Sphenisddite, a synthetic iron phosphate mineral has been synthesized by hydrothermal methods. The material is isotypic with another iron phosphate mineral, leucophosphite. Soheniscidite crystallizes in the monoclinic spacegroup P21In. (a = 9-845(1), b = 9-771(3), c = 9-897(1), ,0=102-9, V= 928-5(1), Z=4, M =372-2, dcak =. 2-02 g. cm-3 and R = 0-02). The structure consists of a network of FeO, ;. occahedra vertex-linked with PO4 tetrahedra forming 8-membered onedimensional 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.

Department(s)

Chemistry

Keywords and Phrases

Absorption; Antiferromagnetism; Dehydration; Magnetic susceptibility; Synthesis (chemical), Iron phosphate minerals; Open framework materials; Reversible dehydration; Spheniscidite; Structure directing agents, Phosphate minerals; Adsorption; Antiferromagnerism; Open-framework materials; Reversible dehydration; Struciure-directing agents

International Standard Serial Number (ISSN)

0974-3626; 0973-7103

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1999 Springer India, All rights reserved.

Publication Date

01 Oct 1999

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