Abstract
Key indicators: single-crystal X-ray study; T = 293 K; mean (C-C) = 0.010 Å; R factor = 0.053; wR factor = 0.186; data-to-parameter ratio = 18.4.
Abstract
II atom in the title compound, [CdCl 2 (C 10 H 8 N 2 ) 2 ] exists in a distorted octahedral geometry [N-Cd-N = 148.29 (17) ]; the Cl atoms are cis with respect to each other. 
Abstract
Related literature

The Cd II atom in the title compound, [CdCl 2 (C 10 H 8 N 2 ) 2 ] exists in a distorted octahedral geometry ]; the Cl atoms are cis with respect to each other.
Related literature
For polymeric dichlorido(2,2 0 -bipyridine)cadmium, see: Zhou et al. (2003) .
Experimental
Crystal data [CdCl 2 (C 10 chain polymer. The cadmium atom exists in an octahedral geometry (Zhou et al., 2003) . In the present 1:2 adduct (Scheme I, Fig. 1 ), the geometry is also an octahedron but the molecule exists as a discrete entity, without any bridging.
Experimental
Cadmium chloride (0.1 mmol), 2,2'-bipyridine (0.1 mmol) and benzoic acid (0.2 mmol) were dissolved in a water-ethanol-DMF mixture (15 ml). The solution was heated in a 25 ml, Teflon-lined, stainless-steel bomb at 383 K for 3 days. The cool solution was filtered and the solvent allowed to evaporate. Colorless crystals separated from solution after a few days.
Refinement
Hydrogen atoms were placed in calculated positions (C-H 0.93 Å) and were included in the refinement in the riding model approximation, with U(H) set to 1.2U eq (C). Figures   Fig. 1 . Thermal ellipsoid plot (Barbour, 2001) of CdCl 2 (C 10 H 8 N 2 ) 2 at the 50% probability level; hydrogen atoms are drawn as spheres of arbitrary radius.
Refinement
F ( 

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