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(E)-3-(4-Bromo-phen-yl)-1-(3,4-dichloro-phen-yl)prop-2-en-1-one.

ABSTRACT: The mol-ecule of the title compound, C(15)H(9)BrCl(2)O, is shown to be the E isomer, with the 3,4-dichloro-benzoyl and p-bromo-phenyl substituents in trans positions with respect to the chalcone olefin bond. The mol-ecule is non-planar, the two aromatic rings forming a dihedral angle of 49.58 (1)°.

SUBMITTER: Kant R

PROVIDER: S-EPMC2968950 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1-(4-Bromo-phen-yl)-3-(3,4-dimethyl-phen-yl)prop-2-en-1-one.

Project description:In the title chalcone derivative, C(17)H(15)BrO, the dihedral angle between the two benzene rings is 48.13?(4)°. In the crystal, a short Br?Br contact of 3.5052?(10)?Å occurs.

| S-EPMC2979457 | biostudies-literature

3-(3,4-Dichloro-phen-yl)-1-(2-naphth-yl)prop-2-en-1-one.

Project description:The asymmetric unit of the title compound, C(19)H(12)Cl(2)O, contains four independent mol-ecules, which can be divided into two pairs of mol-ecules with close values of the C-C(=O)-C=C torsion angles in each pair, viz. 165.12 (16) and 165.68 (15)° in one pair, and -164.66 (15) and -164.81 (15)° in the other pair. The crystal packing exhibits short inter-molecular Cl⋯Cl contacts of 3.362 (1) Å.

| S-EPMC2969996 | biostudies-literature

(2E)-1-(3,4-Dichloro-phen-yl)-3-(2-hy-droxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(15)H(10)Cl(2)O(2), the dihedral angle between the mean planes of the two benzene rings is 7.7?(6)°. The crystal packing is influenced by O-H?O hydrogen bonds, which form chains along [010]. Weak ?-? stacking inter-actions [centroid-centroid distance = 3.6697?(13)?Å] are observed, which may contribute to the crystal packing stability.

| S-EPMC3275046 | biostudies-literature

(E)-1-(3-Bromo-phen-yl)-3-(3,4-dimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:The mol-ecular structure of the title compound, C(17)H(15)BrO(3), consists of a bromo-phenyl and a 3,4-dimeth-oxy-phenyl group linked through a prop-2-en-1-one spacer. The C=C double bond displays an E conformation, while the carbonyl group shows an S-cis conformation relative to the double bond.

| S-EPMC3297934 | biostudies-literature

(E)-1-(2,5-Dichloro-3-thien-yl)-3-(3,4-dimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(15)H(12)Cl(2)O(3)S, the prop-2-en-1-one (enone) fragment is almost planar [C-C-C-O = 2.2?(4)°] and it subtends dihedral angles of 11.9?(2) and 11.0?(2)° with the thio-phene and benzene rings, respectively. The dihedral angle between the aromatic rings is 3.47?(16)°. In the crystal, weak C-H?O and C-H?Cl inter-actions link the mol-ecules, leading to R(2) (2)(14), R(2) (2)(24) and C(11) supra-molecular motifs occurring within the three-dimensional network. Weak aromatic ?-? stacking [centroid-centroid separations = 3.6823?(15) and 3.8722?(15)?Å] may also help to consolidate the packing.

| S-EPMC2983303 | biostudies-literature

(2E)-1-(2-Bromo-phen-yl)-3-(4-bromo-phen-yl)prop-2-en-1-one.

Project description:The title compound, C(15)H(10)Br(2)O, is a chalcone with 2-bromo-phenyl and 4-bromo-phenyl rings bonded to opposite sides of a propenone group. The dihedral angle between mean planes of the benzene rings is 71.3 (1)°. The angle between the mean plane of the prop-2-ene-1-one group and the mean planes of the 2-bromo-phenyl and 4-bromo-phenyl rings are 64.2 (9) and 71.3 (1)°, respectively. A weak inter-molecular C-H⋯O inter-action and two weak C-Br⋯π inter-actions are observed, which contribute to the stability of the crystal packing.

| S-EPMC3006939 | biostudies-literature

Crystal structures of (2E)-1-(3-bromo-thio-phen-2-yl)-3-(2-meth-oxy-phen-yl)prop-2-en-1-one and (2E)-1-(3-bromo-thio-phen-2-yl)-3-(3,4-di-meth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the mol-ecules of the title compounds, (2E)-1-(3-bromo-thio-phen-2-yl)-3-(2-meth-oxy-phen-yl)prop-2-en-1-one, C14H11BrO2S, (I), which crystallizes in the space group P-1 with four independent mol-ecules in the asymmetric unit (Z' = 8), and (2E)-1-(3-bromo-thio-phen-2-yl)-3-(3,4-di-meth-oxy-phen-yl)prop-2-en-1-one, C15H13BrO3S, (II), which crystallizes with Z' = 8 in the space group I2/a, the non-H atoms are nearly coplanar. The mol-ecules of (I) pack with inversion symmetry stacked diagonally along the a-axis direction. Weak C-H?Br intra-molecular inter-actions in each of the four mol-ecules in the asymmetric unit are observed. In (II), weak C-H?O, bifurcated three-center inter-molecular inter-actions forming dimers along with weak C-H?? and ?-? stacking inter-actions are observed, linking the mol-ecules into sheets along [001]. A weak C-H?Br intra-molecular inter-action is also present. There are no classical hydrogen bonds present in either structure.

| S-EPMC4571368 | biostudies-literature

(E)-3-[3-(4-Bromo-phen-yl)-1-phenyl-1H-pyrazol-4-yl]-1-(2,4-dichloro-phen-yl)prop-2-en-1-one.

Project description:In the title mol-ecule, C(24)H(15)BrCl(2)N(2)O, the dihedral angles betwen the pyrazole ring and its N-bonded phenyl (A) and C-bonded bromo-benzene (B) rings are 10.34?(16) and 40.95?(15)°, respectively. The dihedral angle between rings A and B is 56.89?(17)°. The title mol-ecule exists in a trans conformation with respect to the acyclic C=C bond. In the crystal, mol-ecules are linked into inversion dimers by pairs of C-H?O hydrogen bonds, generating R(2) (2)(14) loops. The crystal structure is further consolidated by C-H?? inter-actions.

| S-EPMC3247489 | biostudies-literature

1-(2,4-Dichloro-phen-yl)-3-(4-methyl-phen-yl)prop-2-en-1-one.

Project description:The mol-ecule of the title compound, C(16)H(12)Cl(2)O, adopts an E configuration. The dihedral angle between the two benzene rings is 42.09?(5)°. In the crystal structure, mol-ecules are linked into a three-dimensional framework by weak C-H?O inter-actions and by C-H?? inter-actions involving the methyl-phenyl ring.

| S-EPMC2961235 | biostudies-literature

1-(4-Chloro-phen-yl)-3-(3,4-dimethyl-phen-yl)prop-2-en-1-one.

Project description:The title compound, C(17)H(15)ClO, was prepared from 3,4-dimethyl-benzaldehyde and 4-chloro-hypnone by Aldol condensation. The dihedral angle formed by the two benzene rings is 48.91 (8)°. Only van der Waals forces affect the packing.

| S-EPMC3008096 | biostudies-literature

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