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(E)-1-(2,5-Dimethyl-3-thien-yl)-3-(2-hy-droxy-phen-yl)prop-2-en-1-one.

ABSTRACT: In the title compound, C(15)H(14)O(2)S, the dihedral angle between the aromatic rings is 8.46 -(8)°. The central enone group is planar (r.m.s. deviation = 0.0267 Å) and is oriented at a dihedral angle of 1.20 (9)° with respect to the benzene ring and at 8.27 (9)° with respect to the thio-phene group. In the crystal, the mol-ecules are linked into polymeric chains extending along the b axis due to inter-molecular O-H⋯O hydrogen bonding. An S(6) ring motif is formed due to a short intra-molecular C-H⋯O contact. C-H⋯π inter-actions involving a methyl group of the 2,5-dimethyl-thienyl group and the benzene ring are present. π-π inter-actions between the centroids of the benzene and heterocyclic rings [3.7691 (9) Å] also occur.

SUBMITTER: Asiri AM

PROVIDER: S-EPMC3007990 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(2E)-3-[4-(Dimethyl-amino)-phen-yl]-1-(2,5-dimethyl-3-thien-yl)prop-2-en-1-one.

Project description:The asymmetric unit of the title compound, C(17)H(19)NOS, contains two independent mol-ecules which differ in the dihedral angles between the five- and six-membered rings [12.52?(10) and 4.63?(11)°]. Weak inter-molecular C-H?O hydrogen bonds link the two independent mol-ecules into pseudocentrosymmetric dimers. In one mol-ecule, the O atom of the carbonyl group is disordered over two positions in a 0.699?(4):0.301?(4) ratio.

| S-EPMC3008074 | biostudies-literature

(E)-1-(2,5-Dichloro-3-thien-yl)-3-[4-(dimethyl-amino)phen-yl]prop-2-en-1-one.

Project description:In the title compound, C(15)H(13)Cl(2)NOS, the benzene and thio-phene rings make a dihedral angle of 10.8?(1)°. The dimethyl-amino substituent and the ?,?-unsaturated carbonyl group are almost coplanar with respect to the aromatic ring, forming dihedral angles of 4.73?(3)° and 5.0?(2)°, respectively. In the crystal structure, mol-ecules are connected into two-dimensional layers by weak C-H?Cl hydrogen bonds and C-Cl?O [Cl?O = 3.073?(2)?Å] inter-actions. These layers are stacked with short C(meth-yl)-H?? contacts betweeen the layers.

| S-EPMC2979294 | biostudies-literature

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

Project description:In the title compound, C(18)H(20)O(4)S, the thio-phene and benzene rings are oriented at a dihedral angle of 10.83?(11)°. The central chain makes dihedral angles of 1.86?(13) and 9.25?(12)° with the benzene and thio-phene rings, respectively. In the crystal, mol-ecules are linked through weak inter-molecular C-H?O inter-actions. ?-? inter-actions are also observed between the benzene rings with a centroid-centroid distance of 3.6832?(12)?Å. The slippage between the benzene rings is 0.956?Å.

| S-EPMC3007317 | biostudies-literature

(E)-1-(5-Bromo-2-hy-droxy-phen-yl)-3-[4-(dimethyl-amino)-phen-yl]prop-2-en-1-one.

Project description:In the title compound, C(17)H(16)BrNO(2), the two benzene rings make a dihedral angle of 7.4?(3)°; the hy-droxy group links to the carbonyl group via an intra-molecular O-H?O hydrogen bond. In the crystal, weak C-H?O inter-actions link the mol-ecules into a supra-molecular chain running along the c axis.

| S-EPMC3344563 | biostudies-literature

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

Project description:In the title compound, C16H14O4, there is an intra-molecular O-H?O hydrogen bond. The benzene rings are inclined to one another by 13.89?(9)°. The prop-2-en-1-one group is twisted slightly, the O=C-Car-Car (ar = aromatic) and C=C-C=O torsion angles being -10.4?(3) and -7.4?(3)°, respectively. In the crystal, mol-ecules are linked by O-H?O hydrogen bonds, forming chains along [100]. These chains are further linked by O-H?O hydrogen bonds, forming corrugated sheets lying parallel to (010). There are C-H?? inter-actions present within the sheets.

| S-EPMC4011235 | 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)-3-(4-Chloro-phen-yl)-1-(4-hy-droxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(15)H(11)ClO(2), the dihedral angle between the mean planes of the chloro-benzene and hy-droxy-benzene rings is 6.5?(6)°. The mean plane of the prop-2-en-1-one group makes an angle of 18.0?(1)° with the hy-droxy-phenyl ring and 11.5?(1)° with the chloro-phenyl ring. The crystal packing is stabilized by inter-molecular O-H?O hydrogen bonds, weak C-H?O, C-H?? and ?-? stacking inter-actions [centroid-centroid distances = 3.7771?(7) and 3.6917?(7)?Å].

| S-EPMC3099984 | 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)-3-Dimethyl-amino-1-(2,5-dimethyl-thio-phen-3-yl)prop-2-en-1-one.

Project description:In the title compound, C(11)H(15)NOS, the 3-(dimethyl-amino)-prop-2-en-1-one unit is approximately planar [maximum deviation = 0.0975?(14)?Å] and its mean plane of seven non-H atoms makes a dihedral angle of 6.96?(10)° with the thio-phene ring. In the crystal, mol-ecules are linked by pairs of C-H?O hydrogen bonds into inversion dimers with R(2) (2)(14) ring motifs. The dimers are stacked along the c axis through C-H?? inter-actions. The two methyl groups, attached to the thio-phene ring and the amino N atom, are each disordered over two orientations, with site-occupancy ratios of 0.59?(4):0.41?(4) and 0.74?(4):0.26?(4), respectively.

| S-EPMC3379305 | biostudies-literature

(E)-3-(4-Chloro-phen-yl)-1-(5-hy-droxy-2,2-dimethyl-2H-chromen-6-yl)prop-2-en-1-one.

Project description:There are two independent mol-ecules in the asymmetric unit of the title compound, C(20)H(17)ClO(3), each having an E configuration about the -C=C- bond. The dihedral angles between the two benzene rings in the two mol-ecules are 7.17 (11) and 9.82 (11)°. In both mol-ecules, the hy-droxy group is involved in an intra-molecular O-H⋯O hydrogen bond.

| S-EPMC3274975 | biostudies-literature

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