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metal-organic compounds
In the title compound, [Zn2(C6H8O4)2(C12H8N2)2(H2O)2], each Zn atom is six-coordinated in the ZnO4N2 form in a distorted tetragonal–bipyramidal geometry. The water molecules act as donors in O—H
O hydrogen bonds, connecting the molecules into chains. The packing is further stabilized by intermolecular C—HO interactions.
O hydrogen bonds, connecting the molecules into chains. The packing is further stabilized by intermolecular C—HO interactions.metal-organic compounds
In the title compound, [Cu(C7H5N3O2)2(H2O)2](NO3)2, the Cu atom, located on an inversion centre, is four-coordinated by the two O atoms from two water molecules and two N atoms from two benzimidazole ligands. The geometry around the Cu atom is nearly perfect square planar. The crystal packing is stabilized by intermolecular N—HO, O—HO and C—HO hydrogen bonds.
O, O—HO and C—HO hydrogen bonds. organic compounds
In the title compound, C18H22N4O2, the molecule has a crystallographically imposed centre of symmetry. Intermolecular N—HO hydrogen bonds link the molecules into ribbons along the a axis. The crystal packing is further stabilized by weak C—HN interactions.
O hydrogen bonds link the molecules into ribbons along the a axis. The crystal packing is further stabilized by weak C—HN interactions. organic compounds
In the title compound, C16H16N4O2, the piperazine ring adopts a chair conformation. The title molecule has a crystallographically imposed centre of symmetry with half the molecule constituting the asymmetric unit. Molecules of (I) are linked into a three-dimensional framework by weak C—HO and C—HN interactions. The packing is further stabilized by C—Hπ and π–π interactions.
O and C—HN interactions. The packing is further stabilized by C—Hπ and π–π interactions.metal-organic compounds
In the centrosymmetric binuclear title complex, [Cd2(C6H8O4)(NO3)2(C14H12N2)2(H2O)2], each Cd atom is seven-coordinated in a CdO5N2 environment with a distorted petagonal-bipyramidal geometry. The water molecules act as both donors and acceptors in O—HO hydrogen bonds, interconnecting the molecules into double chains along the b axis. The packing is further stabilized by π–π interactions between the phenanthroline ring systems.
O hydrogen bonds, interconnecting the molecules into double chains along the b axis. The packing is further stabilized by π–π interactions between the phenanthroline ring systems.
