Received 13 December 2013
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 . 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  and  in which the 11-coordinated potassium cation is located. The crystal structure of this new phosphate probably represents a new structural type.
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BR2234 ).
The authors thank the Unit of Support for Technical and Scientific Research (UATRS, CNRST) for the X-ray measurements.
Ayed, A. (2012). C. R. Chim. 15, 603-608.
Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.
Nagornyi, P. G., Kapshuk, A. A., Sobolev, A. N. & Golego, N. V. (1996). Kristallografiya, 41, 835-838.
Palkina, K. K. & Maksimova, S. I. (1980). Dokl. Akad. Nauk SSSR, 250, 1130-1134.
Sanz, F., Prada, C., Amado, U., Monge, M. A. & Ruiz-Valero, C. (1996). J. Solid State Chem. 123, 129-139.
Sanz, F., Prada, C., Rojo, J. M. & Ruiz-Valero, C. (1999). Chem. Mater. 11, 2673-2679.
Sanz, F., Prada, C., Rojo, J. M. & Ruiz-Valero, C. (2001). Chem. Mater. 13, 1334-1340.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.