科研之友
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摘要
In the title compound, [Cu2Cl4(C12H8N2O4)2]﹞4C3H7NO, which contains a chloride-bridged centrosymmetric CuII dimer, the CuII atom is in a distorted square-pyramidal 4 + 1 coordination geometry defined by the N atoms of the chelating 2,2∩-bipyridine ligand, a terminal chloride and two bridging chloride ligands. Of the two independent dimethylformamide molecules, one is hydrogen bonded to a single 每COOH group, while one links two adjacent 每COOH groups via a strong accepted O〞H...O and a weak donated C(O)〞H...O hydrogen bond. Two of these last molecules and the two 每COOH groups form a centrosymmetric hydrogen-bonded ring in which the CH=O and the 每COOH groups by disorder adopt two alternate orientations in a 0.44:0.56 ratio. These hydrogen bonds link the CuII complex molecules and the dimethylformamide solvent molecules into infinite chains along [-111]. Slipped 羽每羽 stacking interactions between two centrosymmetric pyridine rings (centroid每centroid distance = 3.63 ) contribute to the coherence of the structure along [0-11].
