Received 14 November 2011
aKey Laboratory of Eco-Environment-Related Polymer Materials of the Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
In the title compound, C18H18Cl2N2, the complete molecule is generated by the application of C2 symmetry. The C=N bond has an E configuration. The dihedral angle between the benzene ring and the 1,4-diazabutadiene plane is 66.81 (9)°.
For background to the applications of the olefin polymerization Ni(II)--diimine catalysts, see: Johnson et al. (1995); Killian et al. (1996). For the effect of the ligand structure on the activity of the catalyst and properties of the products, see: Popeney & Guan (2010); Popeney et al. (2011); Yuan et al. (2005). For related structures, see: Kose & McKee (2011); Wei et al. (2011).
Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT (Bruker, 2008); data reduction: SAINT; 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: BQ2319 ).
We thank the National Natural Science Foundation of China (20964003) for funding. We also thank the Key Laboratory of Eco Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province (Northwest Normal University), for financial support
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