Dibromido{2-[1-(cyclopropylimino)ethyl]pyridine}zinc(II)

In the title compound, [ZnBr2(C10H12N2)], the Zn2+ ion is coordinated by the N,N′-bidentate Schiff base ligand and two bromode ions in a distorted tetrahedral arrangement. The dihedral angle between the pyridine and the cyclopropyl rings is 95.4 (8)°.

In the title compound, [ZnBr 2 (C 10 H 12 N 2 )], the Zn 2+ ion is coordinated by the N,N 0 -bidentate Schiff base ligand and two bromode ions in a distorted tetrahedral arrangement. The dihedral angle between the pyridine and the cyclopropyl rings is 95.4 (8) .
The Zn atom in the complex is four-coordinated by one pyridine N and one imine N atoms of the Schiff base ligand, and by two bromide atoms, forming a tetrahedral geometry (Fig. 1). The dihedral angle between the pyridine and the cyclopropyl rings is 95.4 (8)°. The bond lengths (Table 1) related to the Zn atom are comparable to those observed in similar zinc complexes (Zakrzewski & Lingafelter, 1970;Gourbatsis et al., 1999;Merino et al., 2001;Majumder et al., 2006).
Experimental 2-Acetylpyridine (0.1 mmol, 12.1 mg) and cyclopropylamine (0.1 mmol, 5.7 mg) were mixed and stirred in methanol (10 ml) for 30 min. Then a methanol solution (5 ml) of zinc bromide (0.1 mmol, 22.5 mg) was added to the mixture. The final mixture was stirred for another 30 min to give a colourless solution. Colourless blocks of (I) were obtained by slow evaporation of the solution at room temperature.

Refinement
H atoms were positioned geometrically (C-H = 0.93-0.98 Å) and refined using a riding model, with with U iso (H) = 1.2 or 1.5U eq (C). A rotating group model was used for the methyl group.

Special details
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > 2sigma(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.  (7) 0.054 (7) 0.012 (6) 0.019 (7) 0.015 (6) C10 0.046 (7) 0.079 (10) 0.047 (7) 0.018 (7) 0.015 (6) 0.007 (7) Geometric parameters (Å, °)  (17)