journal menu
metal-organic compounds
Open 
access
access
In the title complex, (CH6N3)2[Zr(C7H3NO4)3]·4H2O, the ZrIV ion lies on a twofold rotation axes and is coordinated by six O and three N atoms of three tridentate pyridine-2,6-dicarboxylate ligands, forming a slightly distorted tricapped trigonal–prismatic geometry. In the crystal, O—H
O and N—HO hydrogen bonds link the components into a three-dimensional network.
O and N—HO hydrogen bonds link the components into a three-dimensional network.organic compoundsOpen access
access
The title compound, C9H11NO2, was obtained as an unexpected product in an attempt to synthesize a triazene ligand. The title molecule is almost planar, with the formamide and ethoxy groups oriented at 2.7 (3) and 12.9 (2)°, respectively, with respect to the mean plane of the benzene ring. In the crystal, molecules are linked by intermolecular N—HO hydrogen bonds, forming a chain along the a axis. Weak C—Hπ interactions with an Hπ distance of 2.78 Å reinforce the crystal packing, resulting in a three-dimensional network.
O hydrogen bonds, forming a chain along the a axis. Weak C—Hπ interactions with an Hπ distance of 2.78 Å reinforce the crystal packing, resulting in a three-dimensional network.organic compoundsOpen access
access
The title molecule, C13H11Cl2N3O, is almost planar and adopts a trans conformation with respect to the –N=N– bond; the dihedral angle between the rings is 3.47 (2)°. The N—N bond lengths indicate the presence of single- and double-bond characters and hence the –N=N—NH– moiety. In the crystal, inversion dimers linked by pairs of N—HCl hydrogen bonds occur, and C—Hπ and π–π stacking interactions are also observed.
Cl hydrogen bonds occur, and C—Hπ and π–π stacking interactions are also observed.metal-organic compoundsOpen access
access
In the title molecular salt, (CH6N3)1.30[Zn(H2O)6]0.35[Zn(C7H4NO4)3]2, the ZnII atom (site symmetry 3) in the anion is coordinated by three N,O-bidentate 3-carboxypyridine-2-carboxylate monoanions to generate a fac-ZnN3O3 octahedral coordination geometry. The guanidinium cation (the C atom has site symmetry 3) and the octahedral hexaaquazinc(II) dication (the Zn2+ cation has site symmetry -3) are occupationally disordered in a 1.30:0.35 ratio. In the crystal, the components are linked by O—HO and N—HO hydrogen bonds to generate infinite (001) sheets. Weak aromatic π–π stacking [centroid–centroid distance = 3.797 (8) Å] is also observed in the crystal.
O and N—HO hydrogen bonds to generate infinite (001) sheets. Weak aromatic π–π stacking [centroid–centroid distance = 3.797 (8) Å] is also observed in the crystal.
