Received 25 September 2012
The structure of the title compound, C6H18N3·HPO4·H2PO4, is characterized by two kinds of inorganic chains running along the a-axis direction. The first one is composed of HPO42- anions, while the second one is built up by H2PO4- anions. Both types of chains are held together by O-HO hydrogen bonds. The organic cations are attached to these chains through N-HO and C-HO hydrogen bonds. The piperazin-1,4-diium ring adopts a chair conformation.
Data collection: KappaCCD Server Software (Nonius, 1997); cell refinement: DENZO-SMN (Otwinowski & Minor, 1997); data reduction: DENZO-SMN; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97 and WinGX (Farrugia, 1999).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RU2043 ).
We would like to acknowledge the support provided by the Secretary of State for Scientific Research and Technology of Tunisia.
Altomare, A., Burla, M. C., Camalli, M., Cascarano, G. L., Giacovazzo, C., Guagliardi, A., Moliterni, A. G. G., Polidori, G. & Spagna, R. (1999). J. Appl. Cryst. 32, 115-119.
Bernstein, J., Davids, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555-1573.
Burnett, M. N. & Johnson, C. K. (1996). ORTEPIII. Report ORNL-6895,Oak Ridge National Laboratory,Oak Ridge, Tennessee, USA.
Chtioui, A. & Jouini, A. (2006). Mater. Res. Bull. 41, 569-575.
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837-838.
Jensen, T. R., Jorgensen, J.-E., Hazell, R. G., Jakobsen, H. J., Chevallier, M.-A., Jorgensen, L. & Wiedermann, A. (2007). Solid State Sci. 9, 72-81.
Kaabi, K., Ben Nasr, C. & Lefebvre, F. (2004). Mater. Res. Bull. 39, 205-215.
Nonius (1997). KappaCCD Server Software. Nonius BV, Delft, The Netherlands.
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307-326. New York: Academic Press.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.