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Crystal structures of (2E)-1-(3-bromothiophen-2-yl)-3-(2-methoxyphenyl)prop-2-en-1-one and (2E)-1-(3-bromothiophen-2-yl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one
In the molecules of the title compounds, (2E)-1-(3-bromo-thiophen-2-yl)-3-(2-methoxyphenyl)prop-2-en-1-one, C(14)H(11)BrO(2)S, (I), which crystallizes in the space group P-1 with four independent molecules in the asymmetric unit (Z′ = 8), and (2E)-1-(3-bromothiophen-2-yl)-3-(3,4-dimethoxy...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4571368/ https://www.ncbi.nlm.nih.gov/pubmed/26396767 http://dx.doi.org/10.1107/S2056989015013420 |
Sumario: | In the molecules of the title compounds, (2E)-1-(3-bromo-thiophen-2-yl)-3-(2-methoxyphenyl)prop-2-en-1-one, C(14)H(11)BrO(2)S, (I), which crystallizes in the space group P-1 with four independent molecules in the asymmetric unit (Z′ = 8), and (2E)-1-(3-bromothiophen-2-yl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one, C(15)H(13)BrO(3)S, (II), which crystallizes with Z′ = 8 in the space group I2/a, the non-H atoms are nearly coplanar. The molecules of (I) pack with inversion symmetry stacked diagonally along the a-axis direction. Weak C—H⋯Br intramolecular interactions in each of the four molecules in the asymmetric unit are observed. In (II), weak C—H⋯O, bifurcated three-center intermolecular interactions forming dimers along with weak C—H⋯π and π–π stacking interactions are observed, linking the molecules into sheets along [001]. A weak C—H⋯Br intramolecular interaction is also present. There are no classical hydrogen bonds present in either structure. |
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