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(E)-1-(2-Amino-phen-yl)-3-(thio-phen-2-yl)prop-2-en-1-one.

ABSTRACT: The mol-ecule of the title heteroaryl chalcone derivative, C13H11NOS, exists in a trans-configuaration and is almost planar with a dihedral angle of 3.73?(8)° between the phenyl and thio-phene rings. An intra-molecular N-H?O hydrogen bond generates an S(6) ring motif. In the crystal, two adjacent mol-ecules are linked into a dimer in an anti-parallel face-to-face manner by a pair of C-H?O inter-actions. Neighboring dimers are further linked into chains along the c-axis direction by N-H?N hydrogen bonds.

SUBMITTER: Chantrapromma S

PROVIDER: S-EPMC3772449 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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(E)-1-(2-Amino-phen-yl)-3-(thio-phen-2-yl)prop-2-en-1-one.

Chantrapromma Suchada S Ruanwas Pumsak P Boonnak Nawong N Fun Hoong-Kun HK

Acta crystallographica. Section E, Structure reports online 20130608 Pt 7

The mol-ecule of the title heteroaryl chalcone derivative, C13H11NOS, exists in a trans-configuaration and is almost planar with a dihedral angle of 3.73 (8)° between the phenyl and thio-phene rings. An intra-molecular N-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, two adjacent mol-ecules are linked into a dimer in an anti-parallel face-to-face manner by a pair of C-H⋯O inter-actions. Neighboring dimers are further linked into chains along the c-axis direction by N-H⋯N hydroge ...[more]

PMID: 24046592

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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.

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