Peiwen Qin

Pentaaqua(1H-benzimidazole-5,6-dicarboxylato-κN3)copper(II) pentahydrate

The title compound, [Cu(C9H4N2O4)(H2O)5]·5H2O, contains one crystallographically independent CuII atom and one 1H-benzimidazole-5,6-dicarboxylate (bdc) ligand, along with five coordinated and five uncoordinated water molecules. The CuII atom is six-coordinated by one N atom from the bdc ligand and five O atoms from water molecules, giving an octahedral coordination geometry. Hydrogen bonds link the mononuclear complex and uncoordinated water molecules into a three-dimensional network.

catena-Poly[[diaqua­(1,10-phenanthroline-κ2N,N′)nickel(II)]-μ-1H-benzimidazole-5,6-dicarboxyl­ato-κ2N3:O6]

In the title complex, [Ni(C9H4N2O4)(C12H8N2)(H2O)2]n, the NiII atom is hexacoordinated by one N and one O atom from two different 1H-benzimidazole-5,6-dicarboxylate ligands, two N atoms from one 1,10-phenanthroline ligand and two water molecules. The flexible 1H-benzimidazole-5,6-dicarboxylate ligands link the NiII centres, forming an infinite zigzag chain parallel to [001]. The crystal packing is governed by intermolecular hydrogen-bonding interactions of the O—H⋯O, N—H⋯O and C—H⋯O types.

Tetra­aquabis(6-carboxy-1H-benzimid­azole-5-carboxyl­ato-κN 3)nickel(II) dimethyl­formamide disolvate dihydrate

The title compound, [Ni(C9H45N2O4)2(H2O)4]·2C3H7NO·2H2O, has the NiII center coordinated by four water molecules and two N atoms from two 1H-benzimidazole-5,6-dicarboxylate ligands in an octahedral geometry. The molecule interacts with the solvent water and dimethylformamide molecules through N—H⋯O and O—H⋯O hydrogen bonds to form a three-dimensional supramolecular network. The metal atom lies on a center of inversion.

Hexaaquacobalt(II) 4,4′-(1,2-dihydroxyethane-1,2-diyl)dibenzoate monohydrate

The title compound, [Co(H2O)6](C16H12O6)·H2O, is composed of one 4,4′-(1,2-dihydroxyethane-1,2-diyl)dibenzoate anion lying on an inversion center, one [Co(H2O)6]2+ dicationic complex and a solvent water molecule located on mirror planes. In the crystal, a chain is constructed via O—H⋯O hydrogen bonds involving the carboxylate and hydroxyl groups of the organic anion; the chains are further connected into a three-dimensional framework by additional O—H⋯O hydrogen bonds between the [Co(H2O)6]2+ cations, solvent water molecules and the anions.

Hexaaqua­nickel(II) 4,4′-(1,2-dihy­droxy­ethane-1,2-di­yl)dibenzoate monohydrate

In the title compound, [Ni(H2O)6](C16H12O6)·H2O, the NiII cation is located on a mirror plane and is coordinated by six water molecules, two of which are also located on the mirror plane, in a distorted octahedral geometry. The 4,4′-(1,2-dihydroxyethane-1,2-diyl)dibenzoate anion is centrosymmetric with the mid-point of the central ethane C—C bond located on an inversion center. The uncoordinated water molecule is located on a mirror plane. Extensive O—H⋯O hydrogen bonding is present in the crystal structure.

Diaqua­bis­(4-carb­oxy-2-propyl-1H-imidazole-5-carboxyl­ato-κ2N3,O4)copper(II) N,N-dimethyl­formamide disolvate

In the title complex, [Co(C8H9N2O4)2(H2O)2]·2C3H7NO, the CoII cation (site symmetry ) is six-coordinated by two 5-carboxy-2-propyl-1H-imidazole-4-carboxylate ligands and two water molecules in a distorted octahedral environment. In the crystal structure, the complex molecules and dimethylformamide solvent molecules are linked by extensive O—H⋯O and N—H⋯O hydrogen bonding into sheets lying parallel to (21).

Poly[(μ(4)-tetra-zole-1-acetato-κN:N:O:O')silver(I)].

In the title complex, [Ag(C3H3N4O2)]n, the AgI atom is four-coordinated in a slightly distorted tetrahedral coordination geometry by two N atoms from two tetrazole-1-acetate (tza) ligands and two O atoms from the other two tza ligands. The tza ligand bridges two Ag atoms through the carboxylate O atoms and simultaneously binds to the other two Ag atoms through the tetrazole N atoms, forming a two-dimensional network parallel to (100).

Poly[(μ4-tetra­zole-1-acetato-κ4 N 3:N 4:O:O′)silver(I)]

In the title complex, [Ag(C3H3N4O2)]n, the AgI atom is four-coordinated in a slightly distorted tetrahedral coordination geometry by two N atoms from two tetrazole-1-acetate (tza) ligands and two O atoms from the other two tza ligands. The tza ligand bridges two Ag atoms through the carboxylate O atoms and simultaneously binds to the other two Ag atoms through the tetrazole N atoms, forming a two-dimensional network parallel to (100).

Poly[(μ4-tetra­zole-1-acetato-κ4N3:N4:O:O′)silver(I)]

In the title complex, [Ag(C3H3N4O2)]n, the AgI atom is four-coordinated in a slightly distorted tetrahedral coordination geometry by two N atoms from two tetrazole-1-acetate (tza) ligands and two O atoms from the other two tza ligands. The tza ligand bridges two Ag atoms through the carboxylate O atoms and simultaneously binds to the other two Ag atoms through the tetrazole N atoms, forming a two-dimensional network parallel to (100).

Penta­aqua­(1H-benzimidazole-5,6-di­carboxyl­ato-κN3)cobalt(II) penta­hydrate

In the title mononuclear complex, [Ni(C9H4N2O4)(H2O)5]·5H2O, the NiII atom is six-coordinated by one N atom from a 1H-benzimidazole-5,6-dicarboxylate ligand and by five O atoms from five water molecules and displays a distorted octahedral geometry. Intermolecular O—H⋯O hydrogen-bonding interactions among the coordinated water molecules, solvent water molecules and carboxyl O atoms of the organic ligand and additional N—H⋯O hydrogen bonding lead to the formation of a three-dimensional supramolecular network.