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

ABSTRACT: 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.

SUBMITTER: Asiri AM

PROVIDER: S-EPMC3238980 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(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-(2,5-Dimeth-oxy-phen-yl)-3-(3-nitro-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(17)H(15)NO(5), an intra-molecular C-H?O hydrogen bond generates an S(6) ring motif. The benzene rings form a dihedral angle of 6.45?(7)° with each other. In the crystal, inversion dimers linked by pairs of C-H?O hydrogen bonds generate R(2) (2)(8) loops. Adjacent dimers are further connected by C-H?O hydrogen bonds into an infinite chain along the [011] direction.

| S-EPMC3247450 | biostudies-literature

(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)-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

(2E)-1-(2,4-Dimethyl-quinolin-3-yl)-3-(thio-phen-2-yl)prop-2-en-1-one.

Project description:Two independent but virtually identical mol-ecules comprise the asymmetric unit in the title compound, C(18)H(15)NOS. With reference to the quinolin-3-yl group, the 3-(thio-phen-2-yl)prop-2-en-1-one residue is almost perpendicular, with all but the carbonyl O atom lying to one side of the plane. This conformation is reflected by the C-C-C-C torsion angles of -102.2 (3) and 81.1 (3)° in the two independent mol-ecules. The dihedral angle formed between the 13 non-H atoms directly associated with the quinolin-3-yl group and the thio-phen-2-yl ring is 87.70 (11)° [83.85 (10)° for the second independent mol-ecule]. The presence of C-H⋯O, C-H⋯N and π-π inter-actions [centroid-centroid distance = 3.5590 (12) Å] lead to supra-molecular chains along the c-axis direction. These are connected along the a-axis direction by C-H⋯π inter-actions. The resultant supra-molecular layers stack along the b axis.

| S-EPMC3200943 | biostudies-literature

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

Project description:In the title compound, C15H10ClNO3, a substituted chalcone, the dihedral angle between the benzene rings is 5.1 (7)°. The nitro group makes a dihedral angle of 12.5 (3)° with the benzene ring to which it is attached. In the crystal, weak C-H⋯O inter-actions link the mol-ecules into a one-dimensional array along [010]. The crystal studied was an inversion twin, with a refined ratio for the twin components of 0.6060 (9):0.3939 (1).

| S-EPMC3648313 | biostudies-literature

(2E)-3-(3-Nitro-phen-yl)-1-[4-(piperidin-1-yl)phen-yl]prop-2-en-1-one.

Project description:In the title compound, C(20)H(20)N(2)O(3), the piperidine ring adopts a chair conformation and its mean plane forms dihedral angles of 19.63 (9) and 19.44 (9)°, respectively, with the benzene and the nitro-substituted benzene ring. The benzene and nitro-substituted benzene rings are almost coplanar and make a dihedral angle of 4.78 (8)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds into two-dimensional networks parallel to the ab plane. The crystal packing is further stabilized by π-π inter-actions [maximum centroid-centroid distance = 3.7807 (12) Å].

| S-EPMC3343948 | biostudies-literature

(2E)-3-[4-(Dimethyl-amino)-phen-yl]-1-(4-fluoro-phen-yl)prop-2-en-1-one.

Project description:The mean planes of the two benzene rings in the title compound, C(17)H(16)FNO, are twisted slightly, making a dihedral angle of 7.8 (1)°. The prop-2-en-1-one group is also twisted slightly with a C-C-C-O torsion angle of -11.6 (3)°. In the crystal, weak inter-molecular C-H⋯O inter-actions link pairs of mol-ecules, forming centrosymmetric dimers.

| S-EPMC3051752 | biostudies-literature

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

Project description: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.

| S-EPMC3589032 | 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

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