A synthetic iron phosphate mineral, spheniscidite, [nh4](+)[fe- 2(oh)(h2o)(po4)(2)]-h2o, exhibiting reversible dehydration

Choudhury, Amitava and Natarajan, Srinivasan (1999) A synthetic iron phosphate mineral, spheniscidite, [nh4](+)[fe- 2(oh)(h2o)(po4)(2)]-h2o, exhibiting reversible dehydration. In: Journal of Chemical Sciences, 111 (5). pp. 627-637.

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Abstract

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.

Item Type:	Journal Article
Publication:	Journal of Chemical Sciences
Publisher:	Indian Academy of Sciences
Additional Information:	The copyright belongs to Indian Academy of Sciences.
Keywords:	synthetic iron;phosphate mineral;hydrothermal methods;Spheniscidite
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	10 Dec 2004
Last Modified:	19 Sep 2010 04:15
URI:	http://eprints.iisc.ac.in/id/eprint/1504

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