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(2E)-3-(2-Bromo-phen-yl)-1-(5-bromo-thio-phen-2-yl)prop-2-en-1-one.

ABSTRACT: The asymmetric unit of the title compound, C13H8Br2OS, contains two mol-ecules, in which the dihedral angles between the thio-phene and benzene rings are 10.5?(3) and 33.2?(4)°. There are no significant directional inter-actions in the crystal.

SUBMITTER: Vepuri SB

PROVIDER: S-EPMC3589032 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature

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(2E)-3-(2-Bromo-phen-yl)-1-(5-bromo-thio-phen-2-yl)prop-2-en-1-one.

Vepuri Suresh B SB Devarajegowda H C HC Jeyaseelan S S Anbazhagan S S Prasad Y Rajendra YR

Acta crystallographica. Section E, Structure reports online 20121128 Pt 12

The asymmetric unit of the title compound, C13H8Br2OS, contains two mol-ecules, in which the dihedral angles between the thio-phene and benzene rings are 10.5 (3) and 33.2 (4)°. There are no significant directional inter-actions in the crystal. ...[more]

PMID: 23476268

Similar Datasets

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

(2E)-1-(5-Bromo-thio-phen-2-yl)-3-(2,3,4-trimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(16)H(15)BrO(4)S, the thio-phene ring is not coplanar with the benzene ring; the dihedral angle between the two planes is 11.08?(12)°. The crystal structure is characterized by C-H?O inter-actions. Weak intra-molecular C-H?O hydrogen bonds also occur.

| S-EPMC3254417 | 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

(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

(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 ?-? stacking inter-actions.

| S-EPMC3007051 | biostudies-literature

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

Project description:In the title compound, C(16)H(13)BrO(2), two benzene rings form a dihedral angle of 44.3?(9)°. In the crystal, weak inter-molecular C-H?O hydrogen bonds link the mol-ecules into chains propagating in [010]. The crystal packing also exhibits short Br?Br contacts of 3.4787?(8)?Å. A comparison of the DFT-optimized gas-phase mol-ecular geometry with that in the crystal structure revealed only small differences.

| S-EPMC3006708 | biostudies-literature

(2E)-1-(2-Bromo-phen-yl)-3-(3,4,5-trimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the chalcone title compound, C(18)H(17)BrO(4), the dihedral angle between the mean planes of the 2-bromo- and 3,4,5-trimethoxy-substituted benzene rings is 89.3?(1)°. The angles between the mean plane of the prop-2-en-1-one group and the 2-bromo-phenyl and 3,4,5-trimeth-oxy-phenyl ring planes are 59.7?(1) and 40.5?(8)°, respectively. While no classical hydrogen bonds are present, three weak inter-molecular C-H?O inter-actions and weak C-H?Br and C-H?Cg ?-ring stacking inter-actions [C-H?Cg distance = 3.377?(2)?Å] are observed, which contribute to the stability of crystal packing.

| S-EPMC3006788 | biostudies-literature

(2E)-1-(2,5-Dimethyl-thio-phen-3-yl)-3-(3-nitro-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(15)H(13)NO(3)S, the benzene ring and the five-membered heterocyclic ring are oriented at a dihedral angle of 12.00 (6)°. In the crystal, C-H⋯O inter-actions generate two types of cyclic motifs, R(2) (2)(14) and R(2) (2)(26), connecting the mol-ecules into tapes extending along [101]. In addition, there are π-π stacking inter-actions between the benzene and thio-phene rings with centroid-centroid distances of 3.7263 (14) and 3.7487 (14) Å.

| S-EPMC3238980 | biostudies-literature

(2E)-3-(3,4-Dimeth-oxy-phen-yl)-1-(2,5-dimethyl-thio-phen-3-yl)prop-2-en-1-one.

Project description:The mol-ecule of the title compound, C(17)H(18)O(3)S, is essentially planar: the phenyl and thio-phene rings form a dihedral angle of 2.79?(10)° and they are inclined to the central propenone unit by 6.20?(15) and 4.78?(15)°, respectively. In the crystal, mol-ecules are connected into dimers via pairs of C-H?O inter-actions, generating R(2) (2)(14) motifs. ?-? stacking inter-actions between the thio-phene rings also occur, with a centroid-centroid distance of 3.8062?(12)?Å.

| S-EPMC3007254 | biostudies-literature

(2E)-1-(5-Chloro-thio-phen-2-yl)-3-(2,3-dimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(15)H(13)ClO(3)S, the chloro-thio-phene and dimeth-oxy-phenyl groups are linked by a prop-2-en-1-one group. The C=C double bond exhibits an E conformation. The mol-ecule is non-planar, with a dihedral angle of 31.12?(5)° between the chloro-thio-phene and dimeth-oxy-phenyl rings. The meth-oxy group at position 3 is coplanar with the benzene ring to which it is attached, with a C-O-C-C torsion angle of -3.8?(3)°. The meth-oxy group attached at position 2 of the benzene ring is in a (+)synclinal conformation, as indicated by the C-O-C-C torsion angle of -73.6?(2)°. In the crystal, two different C-H?O inter-molecular inter-actions generate chains of mol-ecules extending along the b axis.

| S-EPMC3201439 | biostudies-literature

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