Received 13 March 2009
aState Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China, and bState Key Laboratory for Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, CAS, Lanzhou 730000, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
In the title molecule, C21H18N2, the mean plane of the benzene ring of the mesityl group forms a dihedral angle of 82.69 (4)° with that of the phenanthroline ring system. The crystal structure is stabilized by - stacking interactions between the phenanthroline system and the benzene ring of the mesityl group of a symmetry-related molecule, with centroid-centroid distances of 3.7776 (14) and 3.7155 (13) Å.
For background information on phenanthroline derivatives, see: Schmittel et al. (2001); Garas & Vagg (2000). For information on phenanthroline ligands as used in coordination chemistry, see: Sauvage (1990). For the synthetic procedure, see: Schmittel & Ganz (1997).
Data collection: SMART (Bruker, 1998); cell refinement: SAINT (Bruker, 1998); 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, 1999); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH2789 ).
Bruker (1998). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837-838.
Garas, A. M. S. & Vagg, R. S. (2000). J. Heterocycl. Chem. 37, 151-158.
Sauvage, J. P. (1990). Acc. Chem. Res. 23, 319-327.
Schmittel, M. & Ganz, A. (1997). Chem. Commun. pp. 999-1000.
Schmittel, M., Michel, C., Liu, S.-X., Schildbach, D. & Fenske, D. (2001). Eur. J. Inorg. Chem. pp. 1155-1166.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.