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The title complex, [Cu(C10H12NO2)2], was obtained by the reaction of 5-butylpyridyl-2-carboxylic acid (fusaric acid), extracted from blasted leaves of Rhizophora stylosa, with copper(II) chloride in aqueous solution. The metal atom lies on a center of symmetry. The CuII atom is coordinated by two carboxylate O atoms and two N atoms from two different fusaric acid ligands, and displays a square-planar geometry. [ABSTRACT FROM AUTHOR]

In the title compound, [Mn(C7H3N2O7)(C12H8N2)2(H2O)](C7H2N2O7), the MnII ion is chelated by two phenanthroline ligands, a water molecule and a carboxylate group in an octahedral geometry; the two O atoms involved in bonding are cis to each other. The coordinated water molecule links the cation and the carboxylate anion into a linear chain through hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the centrosymmetric title complex, [Cd2(C7H4ClO2)4(C3H4N2)4]·2H2O, each CdII atom is coordinated by five carboxylate O atoms from three 4-chlorobenzoate ligands and two N atoms from two imidazole ligands, displaying a distorted pentagonal–bipyramidal geometry. The dinuclear molecules, with a Cd...Cd separation of 3.868 (3) Å, form a supramolecular network via intermolecular hydrogen bonds and π–π stacking interactions. The face-to-face distance between parallel 4-chlorobenzoic acids of neighboring complexes [ at ( )] is 3.563 (3) Å. There are also π–π stacking interactions of imidazoles [at ( )], with a centroid-centroid distance of 3.623 (3) Å. [ABSTRACT FROM AUTHOR]

In the title compound, [Ag(C4H4N2)]ClO4, pyrazine ligands bridge two symmetry-related Ag atoms [Ag—N = 2.222 (3) Å] to form linear polycationic chains which run along the c axis of the orthorhombic unit cell. The AgI ion has m2 m site symmetry. The N atoms of the pyrazine ligand lie on a crystallographic mirror plane and each C atom of this ligand possesses crystallographically imposed disorder with two components of equal occupancy. The Cl atom of the perchlorate anion has m2 m site symmetry and the two unique O atoms of this anion lie on a mirror plane. In addition, in the crystal structure, one-dimensional chains are linked through weak interactions involving perchlorate anions [Ag...O = 2.726 (2) Å] into a motif that can be described as a 4(4).6(2) sheet. [ABSTRACT FROM AUTHOR]

The mol­ecular structure of the title compound, [Zn(C8H7O2)2(C7H6N2)2]·2C8H8O2, is composed of a mononuclear ZnII complex, which possesses twofold rotation symmetry, and two uncoordinated 4-methyl­benzoic acid mol­ecules. The ZnII atom displays a four-coordinate distorted tetra­hedral configuration, formed by two carboxylate O atoms of two monodentate 4-methyl­benzoate ligands and two N atoms of two benzimidazole mol­ecules. In the crystal structure, complex mol­ecules are linked by the 4-methyl­benzoic acid mol­ecules via N—H⋯O and O—H⋯O hydrogen bonds, giving rise to the formation of a supra­molecular structure. [ABSTRACT FROM AUTHOR]