P A College of Engineering

About: P A College of Engineering is a based out in . It is known for research contribution in the topics: Dihedral angle & Ring (chemistry). The organization has 298 authors who have published 594 publications receiving 4888 citations.

N'-[(E)-4-Hy-droxy-benzyl-idene]-2-(naph-tha-len-2-yl-oxy)acetohydrazide.

Abstract: The asymmetric unit of the title compound, C19H16N2O3, contains two independent mol­ecules in which the dihedral angles between the naphthalene ring system and the benzene ring are 10.0 (1) and 35.3 (1)°. In the crystal, mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds, forming a two-dimensional framework parallel to (001). Weak C—H⋯O and C—H⋯N hydrogen bonds complete a three-dimensional network.

5-Diethylamino-2-[(Z)-(4-methyl-3-nitrophenyl)iminomethyl]phenol

Abstract: In the crystal structure of the title compound, C18H21N3O3, the molecular conformation is stabilized by an intramolecular O-H center dot center dot center dot N hydrogen bond. The dihedral angle between the two aromatic rings is 3.97 (12)degrees. The nitro group is almost coplanar with the aromatic ring to which it is attached dihedral angle = 6.3 (4)degrees].

4-Amino-3-(4-hy-droxy-benz-yl)-1H-1,2,4-triazole-5(4H)-thione.

Abstract: In the title compound, C9H10N4OS, the dihedral angle between the benzene and 1H-1,2,4-triazole-5(4H)-thione rings is 67.51 (16)°. In the crystal, mol­ecules are liked via N—H⋯O hydrogen bonds, forming chains along the c-axis direction. The chains are linked via O—H⋯S hydrogen bonds, forming corrugated layers lying parallel to the bc plane. The layers are linked via N—H⋯N and N—H⋯S hydrogen bonds, forming a three-dimensional network.