A Synthetic Iron Phosphate Mineral, Spheniscidite, [NH₄]+[Fe₂(OH)(H₂O)(PO₄)₂]-·H₂O, Exhibiting Reversible Dehydration
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 spacegroupP21/n. (a=9·845(1),b=9·771(3),c=9·897(1),β=102·9°,V=928·5(1),Z=4,M=372·2,d calc=2·02 g cm−3 andR=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.
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, Springer Verlag, Jan 1999.
The definitive version is available at http://dx.doi.org/10.1007/BF02869118
Article - Journal
© 1999 Springer Verlag, All rights reserved.