Received 14 September 2010
In the title compound, [Cu(C2H6N5)2]2(SiF6)3, the asymmetric unit is composed of one [Cu(HL)2]3+ cation (where L is 3,5-diamino-1,2,4-triazole) and one and a half SiF62- anions. The rather large positively charged guanazole ligand moiety promotes the low metal coordination number of 2 for the CuI atom. The compound was obtained using the electrochemical alternating-current technique starting from an ethanol-methanol solution of CuSiF6·4H2O and guanazole. In the crystal, N-HF hydrogen bonds play an important role in the formation of a three-dimensional network. As a result of these hydrogen bonds, there are also - interactions [centroid-centroid distance = 3.3024 (14) Å] involving one of the triazole groups in molecules related by an inversion center, and short CuN interactions [2.909 (3) Å] involving an -NH2 group, leading to the formation of a dimer-like arrangement.
For 1,2,4-triazole and its functionalized derivatives, see: Potts (1984). For complexes of the same ligand and copper(I) complexes of similar voluminous ligands, see: Aznar et al. (2006); Fabretti (1992); Goreshnik et al. (2004).
Data collection: STADI4 (Stoe & Cie, 1998); cell refinement: STADI4; data reduction: X-RED (Stoe & Cie, 1998); program(s) used to solve structure: SHELXS86 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Crystal Impact, 2010), ORTEPIII (Burnett & Johnson, 1996) and ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: enCIFer (Allen et al., 2004).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2214 ).
The authors thank the Slovenian Research Agency (ARRS) and the Ukrainian Ministry for Science and Higher Education for financial support (bilateral project BI-UA/09-10-015, M/55-2009)
Allen, F. H., Johnson, O., Shields, G. P., Smith, B. R. & Towler, M. (2004). J. Appl. Cryst. 37, 335-338.
Aznar, E., Ferrer, S., Borrás, J., Lloret, F., Liu-González, M., Rodríguez-Prieto, M. & García-Granda, S. (2006). Eur. J. Inorg. Chem. pp. 5115-5125.
Burnett, M. N. & Johnson, C. K. (1996). ORTEPIII. Report ORNL-6895. Oak Ridge National Laboratory, Tennessee, USA.
Crystal Impact (2010). DIAMOND. Crystal Impact GbR, Bonn, Germany
Fabretti, A. C. (1992). J. Crystallogr. Spectrosc. Res. 22, 523-526.
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.
Goreshnik, E., Schollmeyer, D. & Mys'kiv, M. (2004). Acta Cryst. E60, m279-m281.
Meulenaer, J. de & Tompa, H. (1965). Acta Cryst. 19, 1014-1018.
Potts, K. T. (1984). Editor. Comprehensive Heterocycle Chemistry, Vol. 5. Oxford: Pergamon Press.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Stoe & Cie (1998). STADI4 and X-RED. Stoe &Cie GmbH, Darmstadt, Germany.