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(E)-3-(4-Chloro-phen-yl)-1-(1-naphth-yl)prop-2-en-1-one.

ABSTRACT: In the title compound, C(19)H(13)ClO, the benzene ring and the naphthalene system, are twisted by 12.3 (3) and 36.1 (2)°, respectively, and in opposite directions with respect to the central propenone bridge. The bond-angle pattern within the benzene ring is influence by both substituents; these influences are almost additive. In the crystal, the molecules are linked by C-H⋯O and C-H⋯Cl inter-actions.

SUBMITTER: Dutkiewicz G

PROVIDER: S-EPMC2971946 | biostudies-literature |

REPOSITORIES: biostudies-literature

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

Project description:The title compound, C(15)H(10)Cl(2)O, is a chalcone with 3-chloro-phenyl and 4-chloro-phenyl substituents bonded at the opposite ends of a propenone group, the biologically active region. The dihedral angle between mean planes of these two chloro-substituted benzene rings is 46.7?(7)° compared to 46.0?(1) and 32.4?(1)° in similar published sructures. The angles between the mean plane of the prop-2-en-1-one group and the mean planes of the 3-chloro-phenyl and 4-chloro-phenyl rings are 24.1?(2) and 29.63°, respectively. While no classical hydrogen bonds are present, weak inter-molecular C-H??-ring inter-actions are observed, which contribute to the stability of crystal packing.

| S-EPMC2971255 | biostudies-literature

(E)-3-(2-Chloro-phen-yl)-1-(4-chloro-phen-yl)prop-2-en-1-one.

Project description:The title compound, C(15)H(10)Cl(2)O, adopts an E configuration with respect to the C=C bond of the propenone unit. The dihedral angle between the two benzene rings is 32.4?(1)°. Intra-molecular C-H?O and C-H?Cl hydrogen bonds generate an S(5)S(5)S(5) motif. In addition, the crystal structure is stabilized by weak inter-molecular C-H?O hydrogen bonds.

| S-EPMC2961505 | 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

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

Project description:In the title chalcone derivative, C(15)H(9)Cl(3)O, the dihedral angle between the 2-chloro-phenyl and 2,4-dichloro-phenyl rings is 41.79?(14)°. Weak C-H?O and C-H?Cl intra-molecular inter-actions involving the enone unit generate S(5) ring motifs. In the crystal structure, the mol-ecules are arranged in a head-to-tail manner along the a axis. These chains are stacked along the b axis.

| S-EPMC2961590 | biostudies-literature

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

Project description:In the title compound, C(15)H(10)BrClO, the dihedral angle between mean planes of the bromo- and chloro-substituted benzene rings is 46.2?(2)° compared to 45.20?(9)° in the structure with the Cl substituent in the meta position of the aromatic ring. The dihedral angles between the mean plane of the prop-2-ene-1-one group and the mean planes of the 4-bromo-phenyl and 3-chloro-phenyl rings are 28.7?(5) and 24.2?(4)°, respectively. In the crystal, weak inter-molecular C-H?? inter-actions occur.

| S-EPMC2980037 | biostudies-literature

(E)-1-(4-Chloro-phen-yl)-3-(4-methyl-phen-yl)prop-2-en-1-one.

Project description:The title compound, C(16)H(13)ClO, adopts an E configuration with respect to the C=C double bond of the propenone unit. The dihedral angle between the two benzene rings is 45.9?(2)°. In the crystal structure, mol-ecules are arranged into sheets parallel to the ac plane and the sheets are stacked along the b axis. This arrangement is stabilized by weak inter-molecular C-H?? inter-actions involving both aromatic rings.

| S-EPMC2961484 | biostudies-literature

(E)-3-(3-Chloro-phen-yl)-1-(4-methoxy-phen-yl)prop-2-en-1-one.

Project description:The title mol-ecule, C(16)H(13)ClO(2), is trans with respect to the C=C double bond. The dihedral angles between the mean plane of the prop-2-en-1-one unit and those of the 3-chloro- and 4-meth-oxy-substituted benzene rings are 20.93?(9) and 20.42?(10)°, respectively, and the dihedral angle between the mean planes of the two benzene rings is 40.96?(5)°. The crystal structure is stabilized by weak inter-molecular C-H?O hydrogen bonds, forming chains along the b axis.

| S-EPMC2979640 | biostudies-literature

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

Project description:In the title chalcone derivative, C(15)H(8)Cl(4)O, the C=C double bond exists in an E configuration and the dihedral angle between the two benzene rings is 48.13 (11)°. In the crystal, mol-ecules are arranged into columns and stacked down the a axis featuring possible weak aromatic π-π stacking inter-actions [centroid-centroid separation = 3.888 (2) Å].

| S-EPMC3051492 | biostudies-literature

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

Project description:In the title compound, C(15)H(10)BrClO, the dihedral angle between the mean planes of the benzene rings in the ortho-bromo- and para-chloro-substituted rings is 70.5 (6)°. The dihedral angles between the mean plane of the prop-2-en-1-one group and the mean planes of the benzene rings in the 4-chloro-phenyl and 2-bromo-phenyl rings are 14.9 (3) and 63.3 (8)°, respectively. In the crystal, inversion dimers linked by pairs of weak C-H⋯O interactions are observed as well as aromatic π-π stacking inter-actions.

| S-EPMC3007051 | biostudies-literature

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