metal-organic compounds
Open access
In the title complex, [Zn(C9H5O6)2(C11H10N4)2]·8H2O, the ZnII ion exhibits site symmetry 2. It shows a distorted tetrahedral coordination defined by two N atoms from two symmetry-related 1-[(1H-benzimidazol-2-yl)methyl]-1H-imidazole ligands and by two O atoms from two symmetry-related monodeprotonated 3,5-dicarboxybenzoate anions. In the crystal, complex molecules and solvent water molecules are linked through intermolecular O—HO, O—HN, and N—HO hydrogen bonds into a three-dimensional network.
organic compounds
Open access
The asymmetric unit of the title co-crystal adduct, C6H4O2·C6F4I2, comprises a half-molecule each of cyclohexa-2,5-diene-1,4-dione and 1,2,4,5-tetrafluoro-3,6-diiodobenzene. The C6F4I2 molecule is almost planar (r.m.s. deviation = 0.0062 Å). In the crystal, the components are connected through OI halogen bonds [3.017 (11) Å], leading to the formation of wavelike chains along the a axis. The crystal packing also features C—HF interactions.