Zheng-Yun Zhang

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In the mol-ecule of the title compound, C(14)H(9)BrN(2)O, the dihedral angle between the aromatic rings is 1.09 (4)°. Intra-molecular O-H⋯N hydrogen bonding results in the formation of a planar (r.m.s. deviation = 0.0140 Å) six-membered ring. In the crystal structure, inter-molecular C-H⋯N inter-actions link the mol-ecules into chains.
The mol-ecule of the title compound, C(18)H(19)N(3)O, displays a trans configuration with respect to the C=N double bond. There is a strong intra-molecular O-H⋯N hydrogen-bonding inter-action between the hydr-oxy group and imine N atom. The dihedral angle between the aromatic rings is 30.35 (8)°. The crystal packing is stabilized by O-H⋯N links.
In the mol-ecule of the title compound, C(15)H(12)N(2)O(2), the aromatic rings are oriented at a dihedral angle of 28.11 (3)°. Intra-molecular O-H⋯N hydrogen bonding results in the formation of a planar six-membered ring, which is nearly coplanar with the adjacent ring at a dihedral angle of 1.53 (3)°. In the crystal structure, π-π contacts between the(More)
The title compound, C(18)H(12)N(2)O, crystallizes in a phenol-imine tautomeric form with a Z conformation for the imine functionality. The dihedral angle between the aromatic rings is 8.98 (9)°. A strong intra-molecular O-H⋯N hydrogen-bond inter-action between the hydroxyl group and imine N atom occurs.
The asymmetric unit of the title compound, C(22)H(26)N(2)O, contains three crystallographically independent mol-ecules, in which the aromatic rings are oriented at dihedral angles of 21.74 (5), 27.59 (5) and 27.87 (5)°. Intra-molecular O-H⋯N hydrogen bonds result in the formation of planar six-membered rings, and these are nearly coplanar with the adjacent(More)
In the mol-ecule of the title compound, C(28)H(32)N(2), the benzimidazole ring system is almost planar [maximum deviation = 0.0221 (15) Å] and forms dihedral angles of 85.86 (4) and 32.09 (6)° with the benzene rings. In the crystal structure, mol-ecules are linked into chains running parallel to the a axis by inter-molecular C-H⋯N hydrogen bonds. The methyl(More)
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