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N'-[(2E)-3-Phenyl-prop-2-eno-yl]benzo-hydrazide.

ABSTRACT: In the title compound, C(16)H(14)N(2)O(2), the conformation about the C=C bond is E, and the two amide groups are effectively orthogonal [the C-N-N-C torsion angle is 104.5 (2)°]. In the crystal structure, the amide groups groups associate via N-H⋯O hydrogen bonding, forming supra-molecular tapes with undulating topology along the c-axis direction.

SUBMITTER: Carvalho SA

PROVIDER: S-EPMC2971955 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of 4-[(2E)-3-(4-meth-oxy-phen-yl)prop-2-eno-yl]phenyl benzoate.

Project description:In the title compound, C23H18O4, the meth-oxy-benzene ring and attached C=C grouping are disordered over two sets of sites in a 0.823?(5):0.177?(5) ratio. The dihedral angles between the central benzene ring and the pendant phenyl and meth-oxy-benzene ring (major orientation) are 51.21?(1) and 51.6?(1)°, respectively. In the crystal, inversion dimers linked by pairs of C-H?O hydrogen bonds generate R 2 (2)(28) loops.

| S-EPMC4186117 | biostudies-other

4-Hydr-oxy-3-[(2E)-3-(3,4,5-trimethoxy-phen-yl)prop-2-eno-yl]-2H-chromen-2-one.

Project description:A new chalcone of the coumarin, C(21)H(18)O(7), containing an annulated ?-pyrone ring, was obtained by condensation of the borate complex of ac-yl(hydr-oxy)coumarin with trimethoxy-benzaldehyde. The structure exhibits intra-molecular hydrogen bonding between the hydroxyl oxygen and the ketonic oxygen in the coumarin group. The bicyclic coumarin fragment and the benzene ring form a dihedral angle of 17.1?(4)°. The crystal packing involves dimers inter-connected by C-H?O hydrogen bonding.

| S-EPMC2969351 | biostudies-literature

(2E)-3-(2-Chloro-benzo[h]quinolin-3-yl)-1-(2-methyl-4-phenyl-quinolin-3-yl)prop-2-en-1-one.

Project description:In the title compound, C32H21ClN2O, an almost planar (r.m.s. deviation = 0.033?Å) prop-2-en-1-one bridge links quinolinyl and benzoquinolinyl residues; the latter are twisted out of the plane of the bridge [dihedral angles = 75.94?(5) and 20.20?(5)°, respectively]. In the crystal, a three-dimensional architecture arises as a result of C-H?O, C-H?? and ?-? [centroid-centroid distances involving pyridine rings = 3.5806?(7)-3.7537?(7)?Å] interactions.

| S-EPMC3884436 | biostudies-literature

(2E)-N-Methyl-2-[(2E)-3-phenyl-prop-2-en-1-yl-idene]hydrazinecarbothio-amide.

Project description:The title compound, C(11)H(13)N(3)S, is close to being planar, with a dihedral angle of 9.64?(3)° between the benzene ring and the thio-semicarbazone mean plane, maintained by the presence of ?-conjugation in the chain linking the the two systems. In the crystal, N-H?S hydrogen bonds form centrosymmetric dimers through a cyclic association [graph-set R(2) (2)(8)].

| S-EPMC3470202 | biostudies-literature

4-Hy-droxy-3-[(E)-3-phenyl-prop-2-eno-yl]-2H-chromen-2-one.

Project description:In the title mol-ecule, C(18)H(12)O(4), the phenyl ring is twisted by 23.2?(1)° from the mean plane of the chromene system. In the crystal, weak inter-molecular C-H?O hydrogen bonds link mol-ecules into zigzag chains extending in the [010] direction. An intra-molecular O-H?O hydrogen bond is also present.

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(R)-1-(4-Bromo-benzo-yl)-4-(1-phenyl-prop-yl)thio-semicarbazide.

Project description:The title compound, C(17)H(18)BrN(3)OS, is an important inter-mediate for the synthesis of biologically active heterocyclic compounds. The thio-urea group is approximately planar. The crystal structure is stabilized by inter-molecular N-H?O hydrogen-bonding inter-actions.

| S-EPMC2961238 | biostudies-literature

(2E)-1-(3-Chloro-phen-yl)-3-phenyl-prop-2-en-1-one.

Project description:In the title compound, C(15)H(11)ClO, the dihedral angle between the mean planes of the benzene ring and the chloro-substituted benzene ring is 48.8 (3)°. The dihedral angles between the mean plane of the prop-2-ene-1-one group and the mean planes of the 3-chloro-phenyl and benzene rings are 27.0 (4) and 27.9 (3)°, respectively. In the crystal, weak inter-molecular C-H⋯π-ring inter-actions occur.

| S-EPMC2980116 | biostudies-literature

2-[4-(2-Methyl-prop-yl)phen-yl]-N'-[(E)-1-phenyl-ethyl-idene]propane-hydrazide.

Project description:In the title compound, C(21)H(26)N(2)O, the dihedral angle between the two aromatic rings is 85.90 (19)°. The propenone-hydrazide unit forms dihedral angles of 21.62 (8) and 72.83 (9)°, respectively, with the terminal and central aromatic rings. The 2-methyl-propyl group is disordered over two sites, with occupancies of 0.533 (13) and 0.467 (13). In crystal structure, mol-ecules are linked into centrosymmetric dimers by paired N-H⋯O and C-H⋯O hydrogen bonds. In addition, C-H⋯π inter-actions are observed.

| S-EPMC2960058 | biostudies-literature

Synthesis and crystal structure of methyl 3-(3-hy-droxy-3-phenyl-prop-2-eno-yl)benzoate.

Project description:The title compound, C17H14O4, was synthesized under mild conditions and characterized by various analytical techniques. Combined NMR and X-ray diffraction data show that the substance exists exclusively in the enol tautomeric form. An intra-molecular ⋯O=C-C=C-OH⋯ hydrogen bond is present in the mol-ecular structure. The analysis of the difference density map disclosed two adjacent positions of a disordered hydrogen atom taking part in this hydrogen bond, indicating the presence of two enol tautomers in the crystal. The enol mol-ecules are assembled through numerous C-H⋯π and π-π as well as weak C(ar-yl)-H⋯O inter-actions, thus forming a dense crystal packing. The obtained substance was also studied by UV-Vis spectroscopy and cyclic voltammetry.

| S-EPMC6002825 | biostudies-literature

4-Nitro-N'-[(1E,2E)-3-phenyl-prop-2-en-1-yl-idene]benzohydrazide.

Project description:In the title mol-ecule, C(16)H(13)N(3)O(3), the benzene and phenyl rings are linked through a propenyl-idene hydrazide fragment, C-C(=O)-N(H)-N=C(H)-C(H)=C(H)-, which is fully extended with torsion angles in the range 175.4?(2)-179.9?(2)°. The dihedral angle between the the benzene and phenyl rings is 58.28?(7)°. In the crystal structure, inter-molecular N-H?O hydrogen bonds link the mol-ecules into chains along the b axis and additional stabilization is provided by weak inter-molecular C-H?O hydrogen bonds.

| S-EPMC2979035 | biostudies-literature

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