Yun-Qian Zhang

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The asymmetric unit of the title compound, (C(24)H(26)N(2))[ZnCl(4)], consists of two 2,2'-(hexane-1,6-di-yl)diisoquinolinium cations and two [ZnCl(4)](2-) complex anions. The [ZnCl(4)](2-) anions have a distorted tetra-hedral geometry. The dihedral angles between the isoquinoline rings of the two cations are nearly equal [16.1 (2) and 16.3 (2)°]. In the(More)
In the crystal of the title compound, [Ni(NO(3))(2)(C(18)H(10)N(4))(H(2)O)]·H(2)O, the Ni(II) ion is coordinated in a distorted octahedral geometry by two N atoms of the 1,10-phenanthroline moiety of the ligand, three O atoms from two nitrate anions and an O atom from one water mol-ecule. O-H⋯O hydrogen bonds between the coordinated and the solvent water(More)
The organic cation of the title salt, C(17)H(12)N(4)O(2+)·2Cl(-)·H(2)O, is nearly planar, the dihedral angle between two pyridine rings being 2.53 (16)° and that between the pyridinum and furan rings being 4.17 (19)°. Mol-ecules are linked via N-H⋯O, N-H⋯Cl and O-H⋯Cl hydrogen bonds, forming a three-dimensional framework and π-π stacking inter-actions help(More)
In the title compound, C 10 H 12 N 8 O 4 ÁH 2 O, prepared from the reaction of glycoluril with paraformaldehyde, the organic molecule has mm symmetry. The asymmetric unit comprises one quarter of the molecule and a half-molecule of water. The dimer is formed by bridging two glycoluril molecules with methylene groups at the 1 and 6 positions. In the crystal(More)
In the crystal structure of the title compound, C(13)H(11)N(4)O(3) (+)·Cl(-), the dihedral angle between the two pyridine rings is 9.72 (9) Å. Ions are linked via N-H⋯Cl, O-H⋯Cl and O-H⋯O hydrogen bonds, forming a three-dimensional framework.
A host-guest assembly, (1), based on a partial substituted cucurbituril, α,δ-tetramethylcucurbit[6]uril (TMeQ[6]), and 4-nitrophenol was synthesized and structurally characterized by single-crystal X-ray diffraction. A combination of hydrogen-bonding between the latticed water molecule and the hydroxyl group of 4-nitrophenol, the hydroxyl group of(More)
In the structure of the title compound, C(37)H(40)N(4)O(8), penta-erythrityltetra-mine is bonded to four o-vanillin mol-ecules, forming a four-armed Schiff base mol-ecule. These mol-ecules are connected by inter-molecular C-H⋯O hydrogen bonds. Intramolecular C-H⋯N and O-H⋯N hydrogen bonds are also present.