N′-[(E)-2-Chlorobenzylidene]thiophene-2-carbohydrazide
نویسندگان
چکیده
There are two independent mol-ecules in the asymmetric unit of the title compound, C12H9ClN2OS, a Schiff base derived from hydrazide, in which the dihedral angles between the thio-phene and benzene rings are 3.6 (3) and 7.3 (3)°. In the crystal, the two independent mol-ecules are arranged about an approximate non-crystallographic inversion center and are connected by two N-H⋯O hydrogen bonds. Weak C-H⋯Cl contacts are also present. Conversely, there are neither significant aromatic stacking inter-actions nor contacts involving S atoms.
منابع مشابه
N′-(4-Chlorobenzylidene)thiophene-2-carbohydrazide
In the title compound, C(12)H(9)ClN(2)OS, the dihedral angle between the aromatic rings is 9.78 (11)°. In the crystal structure, inversion dimers linked by pairs of N-H⋯O hydrogen bonds occur, generating R(2) (2)(8) loops. Weak aromatic π-π stacking [centroid-centroid separations = 3.7210 (15) and 3.8706 (15) Å] also occurs.
متن کاملN′-(4-Cyanobenzylidene)thiophene-2-carbohydrazide
The title compound, C(13)H(9)N(3)OS, was prepared by the reaction of thio-phene-2-carbohydrazide and 4-formyl-benzonitrile. The dihedral angle between the benzene and thio-phene rings is 11.9 (1)°. In the crystal structure, mol-ecules are linked into centrosymmetric dimers by pairs of N-H⋯O hydrogen bonds.
متن کامل(E)-N′-(4-Methoxybenzylidene)thiophene-2-carbohydrazide
In the title compound, C(13)H(12)N(2)O(2)S, the dihedral angle between the aromatic rings is 15.20 (11)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.
متن کاملN′-[(5-Methyl-2-furyl)methylene]thiophene-2-carbohydrazide
In the title compound, C(11)H(10)N(2)O(2)S, the dihedral angle between the five-membered aromatic rings is 10.24 (12)°. In the crystal structure, mol-ecules are linked by bifurcated N-H⋯(O,N) hydrogen bonds, generating [001] chains.
متن کاملN′-(4-Methylbenzylidene)thiophene-2-carbohydrazide
In the title compound, C(13)H(12)N(2)OS, the dihedral angle between the aromatic rings is 14.84 (17)°. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.
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