82 research outputs found

    (2E)-2-[(2-Hy­droxy-4-meth­oxy­phen­yl)(phen­yl)methyl­idene]-N-phenyl­hydrazinecarboxamide dimethyl­formamide monosolvate

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    The title compound, C21H19N3O3·C3H7NO, adopts an E conformation with respect to the azomethine bond and crystallizes in the amide form. The dihedral angle between the rings lined to the C=N bond is 88.60 (12)°. The dimethyl­formamide solvent mol­ecule is disordered over two orientations with site occupancies of 0.684 (3) and 0.316 (3). The two N atoms of the hydrazinecarboxamide group are involved in inter­molecular N—H⋯O hydrogen bonds in which the dimethyl­formamide O atom acts as acceptor. The structure also features π–π inter­actions, with a centroid–centroid distance of 3.6561 (13) Å. Classical and non-classical intra­molecular O—H⋯N and C—H⋯O hydrogen bonds are also present

    Crystal structure of 8-[7, 8-bis(4-chlorobenzoyl)-7H-cyclopenta[a]acenaphthylen-9-yl]naphthalene-1-carboxylic acid

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    JPJ and CK are obliged to Dr S. Prathapan for introducing them to the field of domino reactions. SAIF (STIC) CUSAT, Kochi, India, provided spectroscopic, analytical and single crystal X-ray diffraction data.Peer reviewedPublisher PD

    Bis{μ-2-[bis­(pyridin-2-yl)methyl­idene]hydrazinecarbothio­amidato}bis­[bromido­copper(II)] methanol disolvate

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    In the centrosymmetric binuclear title compound, [Cu2Br2(C12H10N5S)2]·2CH3OH, the CuII ion adopts a slightly dis­torted square-pyramidal coordination geometry. The hydrazine carbothio­amide moiety and one of the pyridyl rings together adopt an almost planar arrangement, with a maximum deviation of 0.052 (4) Å for the C atom of the thio­urea moiety. There are two mol­ecules of methanol solvent per complex in the asymmetric unit. The nonconventional intra­molecular C—H⋯Br hydrogen bonds make the mol­ecule more rigid, whereas the conventional N—H⋯N and O—H⋯Br inter­molecular hydrogen-bonding inter­actions, supported with N—H⋯π inter­actions, establish a supra­molecular linkage among the mol­ecules in the crystal. An intermolecular C—H⋯O inter­action is also present

    2-(3-Eth­oxy-2-hy­droxy­benz­ylidene)-N-phenyl­hydrazinecarboxamide

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    The title compound, C16H17N3O3, exists in the E configuration with respect to the azomethine double bond. The mol­ecule is close to planar, with a dihedral angle of 6.7 (1)° between the aromatic rings. The phenolic O atom functions as donor and acceptor by forming intramolec­ular O—H⋯O and inter­molecular N—H⋯O hydrogen bonds, respectively. Two-dimensional packing is fashioned through an inter­molecular hydrogen bonding network in an offset manner

    N′-[(E)-Furan-2-yl­methyl­idene]pyridine-3-carbohydrazide

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    The title compound, C11H9N3O2, exists in the E conformation with respect to the azomethane C=N bond, and has the keto form. There are two independent mol­ecules in the asymmetric unit and each of these features a slight slanting of the pyridine and furan rings, which form a dihedral angle of 14.96 (10)° in one of the mol­ecules and 5.53 (10)° in the other. The crystal structure is stabilized by N—H⋯O and N—H⋯N hydrogen bonds, weak C—H⋯O and C—H⋯N hydrogen bonds and C—H⋯π inter­actions and π–π inter­actions [shortest centroid–centroid distance = 3.7864 (15) Å]

    (E)-2-(4-Benz­yloxy-2-hy­droxy­benzyl­idene)-N-phenyl­hydrazinecarbothio­amide

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    The title compound, C21H19N3O2S, exists in the thione form. The configuration about the C=N bond is E. The hydrazinecarbothio­amide unit adopts an almost planar arrangement, with maximum deviations of 0.016 (3) and −0.016 (2) Å for the two thio­urea N atoms. An intra­molecular O—H⋯N hydrogen bond occurs. Weak inter­molecular N—H⋯S, C—H⋯O and C—H⋯π inter­actions are observed in the crystal structure

    N′-[(E)-4-Benz­yloxy-2-hy­droxy­benzyl­idene]-4-nitro­benzohydrazide monohydrate

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    The title compound, C21H17N3O5·H2O, exists in the keto form with an E conformation with respect to the azomethine double bond. The twist angles between the aromatic rings are in the range 4.67 (10)–17.54 (10)°. A water mol­ecule of solvation is present in the lattice. A conventional intra­molecular O—H⋯N hydrogen bond increases the rigidity of the mol­ecule. Inter­molecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen-bonding inter­actions establish a supra­molecular linkage among the mol­ecules in the crystal structure. There are also C—H⋯π inter­actions present

    (Z)-N,N-Dimethyl-2-[phen­yl(pyridin-2-yl)methyl­idene]hydrazinecarbothio­amide

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    The title compound, C15H16N4S, exists in the Z conformation with the thionyl S atom lying cis to the azomethine N atom. The shortening of the N—N distance [1.3697 (17) Å] is due to extensive delocalization with the pyridine ring. The hydrazine–carbothio­amide unit is almost planar, with a maximum deviation of 0.013 (2) Å for the amide N atom. The stability of this conformation is favoured by the formation of an intra­molecular N—H⋯N hydrogen bond. The packing of the mol­ecules involves no classical inter­molecular hydrogen-bonding inter­actions; however, a C—H⋯π inter­action occurs

    (2 E

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    4-{( E

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