| Summary: | The title molecule, [CoCl2(C5H5N)2(H2O)2], has -1 symmetry with the CoII ion situated on an inversion centre. The cation has a distorted octahedral coordination environment and is surrounded by two N and two Cl atoms in the equatorial plane, while the coordinating water O atoms occupy the axial positions. The crystal exhibits nonmerohedral twinning with two domain states, the volume fractions of which were refined to 0.883 (2) and 0.117 (3). The crystal packing is stabilized by O—H...Cl hydrogen-bond interactions, forming two-dimensional networks lying parallel to (001). The crystal packing also features π–π interactions between the pyridine rings, with centroid–centroid separations of 3.493 (3) and 3.545 (3) Å.
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