(E)-N′-[1-(Thiophen-2-yl)ethylidene]benzohydrazide
نویسندگان
چکیده
The title compound, C(13)H(12)N(2)OS, was obtained from the condensation reaction of 2-acetyl-thio-phene and benzohydrazide. In the mol-ecule, the formohydrazide fragment is approximately planar (r.m.s deviation = 0.0146 Å) and the mean plane is oriented at dihedral angles of 24.47 (11) and 28.86 (13)°, respectively, to the phenyl and thio-phene rings. The thio-phene and phenyl rings make a dihedral angle of 53.21 (8)°. The benzamide fragment and thio-phene ring are located on the opposite sides of the C=N bond, showing an E conformation. Classical inter-molecular N-H⋯O hydrogen bonds and weak C-H⋯O inter-actions are present in the crystal structure: three such bonds occur to the same O-atom acceptor.
منابع مشابه
(E)-N′-[1-(Thiophen-2-yl)ethylidene]isonicotinohydrazide
In the title compound, C(12)H(11)N(3)OS, the dihedral angle between the pyridine and thio-phene rings is 46.70 (9)° and the C-N-N-C torsion angle is 178.61 (15)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.
متن کاملCrystal structure of (E)-N-phenyl-N′-[1-(thiophen-2-yl)ethylidene]formohydrazide
In the title compound, C13H12N2OS, the planes of the thio-phene and phenyl rings are nearly perpendicular to each other, making a dihedral angle of 86.42 (12)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming a helical chain along the b-axis direction.
متن کامل2-Nitro-N′-[1-(pyridin-2-yl)ethylidene]benzohydrazide
In the title compound, C(14)H(12)N(4)O(3), the dihedral angle between the benzene ring and the pyridine ring is 60.9 (2)°. The major twist in the mol-ecule occurs about the (NH)-(CO)-C(ar)-C(ar) (ar = aromatic) bond, the relevant torsion angle being 63.97 (12)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.
متن کامل(E)-N′-[1-(4-Aminophenyl)ethylidene]benzohydrazide
Crystals of the title compound, C(15)H(15)N(3)O, were obtained from a condensation reaction of benzohydrazide and 1-(4-amino-phen-yl)ethanone. The mol-ecule assumes an E configuration with the amino-phenyl and benzohydrazide units located on opposite sites of the C=N double bond. In the crystal structure, the benzene rings of the mol-ecule are slightly twisted with respect to the central hydraz...
متن کامل2-Hydroxy-N′-[1-(3-methylpyrazin-2-yl)ethylidene]benzohydrazide
The mol-ecule of the title compound, C(14)H(14)N(4)O(2), is slightly twisted, with a dihedral angle of 10.06 (14)° between the aromatic rings. An intra-molecular N-H⋯O and an inter-molecular O-H⋯O hydrogen bond help to establish the crystal structure.
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