Received 12 January 2011
The reaction of cadmium nitrate and sodium nitrite in the presence of 1,10-phenanthroline yields the mixed nitrate-nitrite title complex, [Cd(NO2)1.75(NO3)0.25(C12H8N2)2]. The metal ion is bis-chelated by two N-heterocycles as well as by the nitrate/nitrite ions in a distorted dodecahedral CdN4O4 coordination environment. One nitrite group is ordered; the other is disordered with respect to a nitrate group (ratio 0.75:0.25) concerning the O atom that is not involved in bonding to the metal ion.
Data collection: CrysAlis PRO (Agilent Technologies, 2010); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); 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: WM2452 ).
We thank Shahid Beheshti University and the University of Malaya for supporting this study.
Abedini, J., Morsali, A. & Kempe, R. (2005). J. Coord. Chem. 58, 1161-1167.
Agilent Technologies (2010). CrysAlis PRO. Agilent Technologies, Yarnton, England.
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Tadjarodi, A., Taeb, A. & Ng, S. W. (2001). Main Group Met. Chem. 24, 805-806.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.