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- W2413921152 abstract "The title compounds, C 15 H 12 Br 2 OS 2 , (I), and C 20 H 15 BrOS, (II), were synthesized by employing Claisen–Schmidt condensation of pentan-3-one and dibenzylacetone with 5-bromothiophene-2-carbaldehyde in the presence of methanolic KOH. Even though 1:2 products were expected in both of the reactions, 1:2 and 1:1 products were obtained as (I) and (II), respectively. In (I), the two methyl groups are trans to each other, 29.5 (7) and 28.7 (7)° away from the central carbonyl bond between them, whereas the two phenyl rings of dibenzylacetone subtend a dihedral angle of 53.09 (18)°. In the crystal of (I), C—H...O hydrogen bonds define molecular chains along c . A second type of molecular chain is formed along b by means of C—Br...π interactions. These two families of molecular chains are stacked by π–π interactions, forming a three-dimensional supramolecular architecture. In (II), similar C—H...O hydrogen bonds as in (I) define inversion dimers, whilst C—H....π interactions build a staircase structure along the a axis." @default.
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- W2413921152 date "2016-01-20" @default.
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- W2413921152 title "Crystal structures of (1<i>E</i>,4<i>E</i>)-1,5-bis(5-bromothiophen-2-yl)-2,4-dimethylpenta-1,4-dien-3-one and (<i>E</i>)-4-(5-bromothiophen-2-yl)-1,3-diphenylbut-3-en-2-one" @default.
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- W2413921152 doi "https://doi.org/10.1107/s205698901600058x" @default.
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