105 research outputs found
(E)-3-(4-Chlorophenyl)-1-(2-furyl)prop-2-en-1-one
In the title molecule, C13H9ClO2, the benzene and furyl rings are slightly twisted from each other with a dihedral angle of 5.1 (1)°. An intramolecular C—H⋯O hydrogen-bond interaction generates an S(5) ring motif. In the crystal structure, molecules are stacked along the b axis and the crystal packing is stabilized by weak intermolecular C—H⋯O hydrogen bonds
(E)-3-(2-Chlorophenyl)-1-(3-methoxyphenyl)prop-2-en-1-one
The title compound, C16H13ClO2, adopts an E configuration with respect to the double bond of the propenone unit. The two benzene rings are twisted slightly from each other, making a dihedral angle of 7.14 (5)°. The molecules are arranged in stacks, in which adjacent molecules are related by inversion symmetry and form π–π interactions with a centroid–centroid distance of 3.7098 (6) Å. C—H⋯O and C—H⋯π interactions are formed between neighbouring molecules
(E)-3-(4-Methylphenyl)-1-(4-nitrophenyl)prop-2-en-1-one
The asymmetric unit of the title compound, C16H13NO3, contains two independent molecules related approximately by a pseudo-twofold rotation axis. The dihedral angle between the nitrobenzene and methylphenyl rings is 42.18 (6)° in one molecule and 12.97 (6)° in the other. In both molecules, the nitro group is slightly twisted away from the attached benzene ring. In the crystal structure, the molecules are stacked along the b axis and are linked via C—H⋯O and C—H⋯π interactions
3-(2,4-Dichlorophenyl)-1,5-di-2-furylpentane-1,5-dione
In the title compound, C19H14Cl2O4, intramolecular C—H⋯O and C—H⋯Cl hydrogen bonds generate S(6) and S(5) ring motifs, respectively. In the crystal structure, intermolecular C—H⋯O interactions between symmetry-related molecules involving two methylene groups and an O atom as a bifurcated acceptor generate an R
2
1(6) ring motif. In the molecule, one of the furan rings is rotationally disordered by approximately 180° about the single C—C bond to which it is attached; the refined site-occupancy factors are 0.505 (7) and 0.495 (7). The major component of the disordered furan ring and the benzene ring form a dihedral angle of 88.8 (4)°. The dihedral angle between the major disorder component and the other furan ring is 81.9 (4)°. In addition, the crystal structure is stabilized by further intermolecular C—H⋯O (×2) hydrogen bonds and C—H⋯π interactions
2,5-Dimethoxybenzaldehyde thiosemicarbazone
In the title molecule, C10H13N3O2S, the dihedral angle between benzene and –N—C(=S)—N—N=C– planes is 9.20 (6)°. The two methoxy groups are coplanar with the benzene ring [C—O—C—C torsion angles of −2.31 (18) and −6.45 (17)°]. In the crystal structure, molecules are linked by intermolecular N—H⋯S, N—H⋯O and C—H⋯O hydrogen bonds, forming a three-dimensional network
1-(2,4-Dichlorophenyl)-3-(4-methylphenyl)prop-2-en-1-one
The molecule of the title compound, C16H12Cl2O, adopts an E configuration. The dihedral angle between the two benzene rings is 42.09 (5)°. In the crystal structure, molecules are linked into a three-dimensional framework by weak C—H⋯O interactions and by C—H⋯π interactions involving the methylphenyl ring
3-Hydroxy-4-methoxybenzaldehyde thiosemicarbazone hemihydrate
The asymmetric unit of the title compound, C9H11N3O2S·0.5H2O, comprises two crystallograpically independent thiosemicarbazone molecules (A and B) and a water molecule of crystallization. In each of the thiosemicarbazone molecules, intramolecular O—H⋯O and N—H⋯N hydrogen bonds form five-membered rings, producing S(5) ring motifs. Intermolecular O—H⋯S and N—H⋯O interactions between molecule B and the water molecule form a six-membered ring, producing an R
2
2(6) ring motif. Intermolecular N—H⋯S hydrogen bonds form dimers involving pairs of both A and B molecules, which form R
2
2(8) ring motifs. The angles between the aromatic ring and thiourea unit in the two molecules are 0.80 (6) and 3.28 (5)°, which proves that each molecule is fairly planar. The crystal structure is stabilized by intermolecular O—H⋯S (×2), O—H⋯O, N—H⋯S (×2) and N—H⋯O (×2) hydrogen bonds and C—H⋯O (×2) contacts to form a three-dimensional network
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