A Synthetic Iron Phosphate Mineral, Spheniscidite, [NH₄]+[Fe₂(OH)(H₂O)(PO₄)₂]-·H₂O, Exhibiting Reversible Dehydration
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.
A. Choudhury and S. R. Natarajan, "A Synthetic Iron Phosphate Mineral, Spheniscidite, [NH₄]+[Fe₂(OH)(H₂O)(PO₄)₂]-·H₂O, Exhibiting Reversible Dehydration," Journal of Chemical Sciences, vol. 111, no. 5, pp. 627-637, Springer India, Oct 1999.
The definitive version is available at http://dx.doi.org/10.1007/BF02869118
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)
Article - Journal
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