(2E)-2-(3-Ethoxy-2-hydroxybenzylidene)hydrazinecarboxamide
نویسندگان
چکیده
The title compound, C10H13N3O3, adopts an E conformation with respect to the azomethine bond and crystallizes in the amide form. A classical intra-molecular O-H⋯N hydrogen bond is present. The two N atoms of the hydrazinecarboxamide unit are also involved in inter-molecular N-H⋯O hydrogen bonds, with the O atom of the hydrazinecarboxamide group acting as the acceptor. Pairs of N-H⋯O hydrogen bond link the mol-ecules into centrosymmetric dimers, which are linked by further N-H⋯O hydrogen bonds into chains along the b axis. The chains are linked by C-H⋯π inter-actions.
منابع مشابه
2-Ethoxy-6-({2-[(3-ethoxy-2-hydroxybenzylidene)amino]benzyl}iminomethyl)phenol
The title compound, C(25)H(26)N(2)O(4), exists in an E conformation with respect to each azomethine link. The two phenol-substituted benzene rings are twisted away from the plane of the diimine benzene ring by dihedral angles of 27.25 (5) and 56.67 (5)°. The mol-ecular structure is stabilized by intra-molecular O-H⋯N hydrogen bonds.
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In the title compound, C(17)H(18)N(2)O(3), the benzene rings form a dihedral angle of 3.34 (2)°. There is a strong intra-molecular O-H⋯N hydrogen bonds (which induces planarity of the structure). In the crystal, mol-ecules are linked by pairs of O-H⋯N hydrogen bonds, forming inversion dimers.
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The title compound, C(17)H(18)N(2)O(4), crystallizes with two independent mol-ecules in the asymmetric unit. The two benzene rings in each mol-ecule make dihedral angles of 7.6 (3) and 3.9 (3)°. Intra-molecular O-H⋯N and O-H⋯O hydrogen bonds are present in each mol-ecule. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chains propagating in [010]. The are also a number of C-H⋯O an...
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