Received 4 July 2013
The title compound, Sr2Mn3(HPO4)2(PO4)2, was synthesized under hydrothermal conditions. In the structure, one of two Mn atoms is located on an inversion centre, whereas all others atoms are located in general positions. The framework structure is built up from two types of MnO6 octahedra (one almost undistorted, one considerably distorted), one PO3OH and one PO4 tetrahedron. The centrosymmetric MnO6 octahedron is linked to two other MnO6 octahedra by edge-sharing, forming infinite zigzag chains parallel to . The PO3OH and PO4 tetrahedra connect these chains through common vertices or edges, resulting in the formation of sheets parallel to (100). The Sr2+ cation is located in the interlayer space and is bonded to nine O atoms in form of a distorted polyhedron and enhances the cohesion of the layers. Additional stabilization is achieved by a strong interlayer O-HO hydrogen bond between the PO3OH and PO4 units. The structure of the title phosphate is isotypic to that of Pb2Mn3(HPO4)2(PO4)2.
For isotypic Pb2Mn3(HPO4)2(PO4)2, see: Assani et al. (2012b). For related structures, see: Assani et al. (2012a); Effenberger (1999). For the thermal stability of similar compounds, see: Morozov et al. (2003). For applications of phosphates, see: Cheetham et al. (1999); Viter & Nagornyi (2009); Forster et al. (2003); Clearfield (1988); Joschi et al. (2008); Trad et al. (2010).
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: WM2758 ).
The authors thank the Unit of Support for Technical and Scientific Research (UATRS, CNRST) for the X-ray measurements.
Assani, A., Saadi, M., Zriouil, M. & El Ammari, L. (2012a). Acta Cryst. E68, i30.
Assani, A., Saadi, M., Zriouil, M. & El Ammari, L. (2012b). Acta Cryst. E68, i66.
Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Bruker (2009). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Cheetham, A. K., Férey, G. & Loiseau, T. (1999). Angew. Chem. Int. Ed. 38, 3268-3292.
Clearfield, A. (1988). Chem. Rev. 88, 125-148.
Effenberger, H. (1999). J. Solid State Chem. 142, 6-13.
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.
Forster, P. M., Eckert, J., Chang, J.-S., Park, J.-S., Férey, G. & Cheatham, A. K. (2003). J. Am. Chem. Soc. 125, 1309-1312.
Joschi, R., Patel, H. & Chudasama, U. (2008). Indian J. Chem. Technol. 15, 238-243.
Morozov, V. A., Pokholok, K. V., Lazoryak, B. I., Malakho, A. P., Lachgar, A., Lebedev, O. I. & Van Tendeloo, G. (2003). J. Solid State Chem. 170, 411-417.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Trad, K., Carlier, D., Croguennec, L., Wattiaux, A., Ben Amara, M. & Delmas, C. (2010). Chem. Mater. 22, 5554-5562.
Viter, V. N. & Nagornyi, P. G. (2009). Russ. J. Appl. Chem. 82, 935-939.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.