(E)-1-(2-Thienyl)-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-one
نویسندگان
چکیده
In the title mol-ecule, C(16)H(16)O(4)S, the enone fragment, thio-phene ring and benzene ring are individually essentially planar. The thio-phene ring is disordered over two sites, corresponding to a rotation of approximately 180° about the single C-C bond to which it is attached. The approximate ratio of occupancies for the major and minor components is 0.872 (2):0.128 (2). The major component of the thio-phene ring and the benzene ring are twisted from each other by 13.92 (19)°. An intra-molecular C-H⋯O hydrogen bond generates an S(5)S(5) ring motif. The crystal structure is stabilized by inter-molecular C-H⋯O hydrogen-bonding inter-actions. In addition, a π-π stacking inter-action, with a centroid-centroid distance of 3.852 (2) Å, and short S⋯O [2.9378 (12) Å] and O⋯O [2.5811 (16) Å] contacts are observed.
منابع مشابه
(E)-1-(2-Thienyl)-3-(3,4,5-trimethoxyphenyl)prop-2-en-1-one1
The mol-ecule of the title heteroaryl chalcone, C(16)H(16)O(4)S, which consists of substituted thio-phene and benzene rings bridged by the prop-2-en-1-one group, is slightly twisted. The dihedral angle between the thio-phene and 3,4,5-trimethoxy-phenyl rings is 12.18 (4)°. The three meth-oxy groups have two different conformations; two meth-oxy groups are coplanar [C-O-C-C torsion angles = -1.3...
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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. π-π inter-actions are also observed between the benzene rings with...
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