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

By Meryem Moutataouia, Mohammed Lamire, Mohamed Saadi and Lahcen El Ammari


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

Topics: Chemistry, QD1-999
Publisher: International Union of Crystallography
Year: 2014
DOI identifier: 10.1107/S1600536813034089
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