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(2E)-3-{4-[(1H-1,3-Benzimidazol-2-yl)meth-oxy]-3-eth-oxy-phen-yl}-1-(4-bromo-phen-yl)prop-2-en-1-one monohydrate.

ABSTRACT: In the title compound, C(25)H(21)BrN(2)O(3)·H(2)O, the benzimidazole fragment and the water mol-ecule of crystallization are each disordered over two sets of sites of equal occupancy. The dihedral angles between the least-squares planes of the benzimidazole and the 3-eth-oxy- and 4-bromo-benzene rings are 86.9 (6) and 85.1 (1)°, respectively in one disorder component. The crystal packing is stabilized by inter-molecular O-H⋯O, O-H⋯N and N-H⋯N hydrogen bonds, which link the mol-ecules into chains along the a axis.

SUBMITTER: Jasinski JP

PROVIDER: S-EPMC3099940 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(2E)-3-(4-Eth-oxy-phen-yl)-1-(2-methyl-4-phenyl-quinolin-3-yl)prop-2-en-1-one monohydrate.

Project description:The title hydrate, C(27)H(23)NO(2)·H(2)O, features an almost planar quinoline residue (r.m.s. deviation = 0.015 Å) with the benzene [dihedral angle = 63.80 (7) °] and chalcone [C-C-C-O torsion angle = -103.38 (18)°] substituents twisted significantly out of its plane. The configuration about the C=C bond [1.340 (2) Å] is E. In the crystal, mol-ecules related by the 2(1) symmetry operation are linked along the b axis via water mol-ecules that form O-H⋯O(c) and O-H⋯N(q) hydrogen bonds (c = carbonyl and q = quinoline). A C-H⋯O inter-action also occurs.

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(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.

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(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)-3-[4-(1H-Benzimidazol-2-ylmeth-oxy)phen-yl]-1-(4-meth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(24)H(20)N(2)O(3), the mean plane of the benzimidazole unit makes dihedral angles of 79.88 (11) and 85.44 (12)° with the benzene and 4-meth-oxy-benzene rings, respectively. The benzene and 4-meth-oxy-benzene rings maske a dihedral angle of 16.10 (14)°. A pair of inter-molecular N-H⋯O hydrogen bonds connects adjacent mol-ecules into an inversion dimer, generating an R(2) (2)(26) ring motif. The crystal structure is further stabilized by C-H⋯π inter-actions.

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

Project description:The overall shape of the mol-ecule of the title compound, C(17)H(15)BrO(2), can be described by the dihedral angles between three planar fragments: 1-bromo-2-meth-oxy-phenyl ring [maximum deviation = 0.003 (2) Å], the central prop-2-en-1-one chain [maximum deviation = 0.005 (2) Å], and the methyl-phenyl ring [maximum deviation = 0.004 (2) Å]. The terminal planes are twisted by 10.37 (12)°, while the central plane is almost coplanar with the methyl-phenyl ring [3.30 (13)°], but the dihedral angle with the other phenyl ring is significantly larger [8.76 (16)°]. In the crystal, mol-ecules are linked into chains along [001] by three C-H⋯O hydrogen bonds. These chains inter-act with each other by means of weak π-π contacts [centroid-centroid distances = 3.73 (1) and 3.44 (1) Å]. An inter-molecular C-H⋯Br inter-action also occurs.

| S-EPMC3099759 | 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)-1-(3-Bromo-phen-yl)-3-(6-meth-oxy-2-naphth-yl)prop-2-en-1-one.

Project description:In the title compound, C(20)H(15)BrO(2), the prop-2-en-1-one fragment is substanti-ally twisted [C-C-C-O = 23.0?(11)°]. The dihedral angle between the benzene and naphthalene rings is 44.28?(13)°. The only possible directional inter-actions in the crystal are weak C-H?? contacts, which generate (001) sheets.

| S-EPMC2983307 | biostudies-literature

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

Project description:The mean planes of the benzene and pyridine rings in the title compound, C(15)H(12)BrNO(2), are nearly coplanar, subtending an angle of 2.8 (8)°. The prop-2-en-1-one group is also in the plane of these rings with an N-C-C-O torsion angle of 179.6 (3)°. A weak C-H⋯Br inter-molecular inter-action contributes to the crystal packing, creating a chain-like structure along the a axis.

| S-EPMC3051466 | biostudies-literature

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