Benzyl carbazate

The title compound, C(16)H(16)N(2)S(2), was obtained from the condensation reaction of benzyl dithio-carbazate and 2-methyl-benzaldehyde. The asymmetric unit contains two independent mol-ecules. In both mol-ecules, the methyl-phenyl ring and the dithio-carbazate fragment are located on opposite sides of the C=N bond, showing an E conformation. In each mol-ecule, the dithio-carbazate fragment is approximately planar, the r.m.s deviations being 0.018 and 0.025 Å. The mean plane of dithio-carbazate group is oriented at dihedral angles of 7.9 (3) and 68.24 (12)°, respectively, to the methyl-phenyl and phenyl rings in one mol-ecule, while the corresponding angles in the other mol-ecule are 10.9 (3) and 69.76 (16)°. Inter-molecular N-H⋯S hydrogen bonding occurs in the crystal structure to generate inversion dimers for both molecules.

The title compound, C(15)H(13)N(3)O(2)S(2), was obtained from a condensation reaction of benzyl dithio-carbazate and 2-nitro-benzaldehyde. In the mol-ecule, the nearly planar dithio-carbazate fragment [r.m.s deviation = 0.0264 Å] is oriented at dihedral angles of 7.25 (17) and 74.09 (9)°with respect to the two benzene rings. The nitro group is twisted by a dihedral angle of 22.4 (7)° to the attached benzene ring. The nitro-benzene ring and dithio-carbazate fragment are located on the opposite sides of the C=N bond, showing an E configuration. In the crystal, mol-ecules are linked via inter-molecular N-H⋯S hydrogen bonds, forming centrosymmetric supra-molecular dimers. Weak C-H⋯π inter-action is also observed in the crystal structure.

The title compound, C(10)H(12)N(2)O(2), was prepared by the reaction of methyl carbazate and 4-methyl-benzaldehyde. The dihedral angle between the benzene ring and the carbazate fragment is 20.86 (10)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds.