Acta Crystallographica Section E

Structure Reports Online

Volume 70, Part 1 (January 2014)


inorganic compounds



Acta Cryst. (2014). E70, i5    [ doi:10.1107/S1600536813034089 ]

Potassium trinickel(II) orthophosphate diphosphate, KNi3(PO4)P2O7

M. Moutataouia, M. Lamire, M. Saadi and L. El Ammari

Abstract: The structure of the title compound is characterized by the presence of two different anions, (PO4)3- and (P2O7)4- with an eclipsed conformation. The crystal structure consists of edge-sharing [NiO6] octa­hedra forming an [Ni3O14] chain running parallel to [001]. Adjacent chains are connected through edges and apices to PO4 and P2O7 groups in such a way as to build a three-dimensional host lattice. The resulting framework presents inter­secting tunnels running along [010] and [101] in which the 11-coordinated potassium cation is located. The crystal structure of this new phosphate probably represents a new structural type.


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