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2,5-Bis(4-tert-butyl­phen­yl)-3,4-dinitro­thio­phene

✍ Scribed by Huang, Ping-Hsin ;Cheng, Yu-Da ;Wen, Yuh-Sheng ;Yeh, Ming-Chang P. ;Lin, Jiann T.

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
116 KB
Volume
61
Category
Article
ISSN
1600-5368

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In the molecule of the highly conjugated title compound, C 20 H 18 N 2 O 4 S 3 , the thiophene rings are in an antiparallel arrangement and both azomethine bonds adopt the thermodynamically stable E isomeric form. The mean planes of the terminal thiophene rings are twisted by 9.04 (4) and 25.07 (6)

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The conformation of the title molecule, C 24 H 26 N 2 O 4 S, is influenced by intramolecular N-HÁ Á ÁN hydrogen bonding, andinteractions link the molecules into centrosymmetric dimers. The crystal packing is further stabilized by weak intermolecular C-HÁ Á ÁO hydrogen bonds.

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The molecule of the title compound, C 13 H 16 O 4 , adopts an E configuration, the carboxyl group and benzene ring being located on opposite sides of the C C bond. Intermolecular O-HÁ Á ÁO hydrogen bonding helps to stabilize the crystal structure.