Received 16 July 2012
The title compound, [Tb(NO3)3(C12H16N3O2)2], was prepared from the nitroxide radical ligand 4,4,5,5-tetramethyl-2-(pyridin-2-yl)-imidazoline-1-oxyl-3-oxide and TbIII nitrate. The TbIII ion adopts a doubly-capped square-antiprismatic coordination environment defined by three chelating nitrate anions and two N,O-bidentate nitronyl nitroxide radical ligands. Weak C-HO hydrogen bonds connect the molecules into a three-dimensional framework. The title structure is isotypic with the Ho analogue [Li (2012). Acta Cryst. E68, 550].
For background to the use of rare earth complexes with nitroxide radicals in coordination chemistry, see: Sutter et al. (1998); Kahn et al. (2000); Lescop et al. (2000). For the structures of related complexes, see: Li et al. (2004a,b, 2005); Li (2012).
Data collection: CrystalClear (Rigaku, 2008); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: MW2078 ).
The author thanks the Chemical Institute of Linyi University for supporting this work.
Kahn, M. L., Sutter, J. P. & Golhen, S. (2000). J. Am. Chem. Soc. 122, 3413-3421.
Lescop, C., Luneau, D. & Bussière, G. (2000). Inorg. Chem. 39, 3740-3741.
Li, D.-J. (2012). Acta Cryst. E68, m550.
Li, D.-J., Liao, D.-Z. & Li, L.-C. (2004a). J. Coord. Chem. 57, 1571-1576.
Li, D.-J., Liao, D.-Z. & Li, L.-C. (2005). Chin. J. Struct. Chem. 24, 905-908.
Li, D.-J., Yan, S.-P. & Liao, D.-Z. (2004b). J. Mol. Struct. 698, 103-107.
Rigaku (2008). CrystalClear. Rigaku Corporation, Tokyo, Japan.
Sheldrick, G. M. (2004). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Sutter, J. P., Kahn, M. L. & Golhen, S. (1998). Chem. Eur. J. 4, 571-576.