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1,1'-(2,5-Dimethyl-thio-phene-3,4-di-yl)diethanone.

ABSTRACT: The title compound, C(10)H(12)O(2)S, crystallizes with four mol-ecules in the asymmetric unit. The main conformational difference between these mol-ecules is the orientation of the acetyl groups with respect to the ring. Whereas one acetyl group is only slightly twisted with respect to the thio-phene ring [C-C-C-O torsion angles = 165.7?(4), -164.6?(4), 164.3?(4) and -163.6?(4)°], the other acetyl group is markly twisted out of the ring plane [C-C-C-O torsion angles = -61.2?(6), 61.3?(7), -59.7?(7) and 59.9?(6)°]. In the crystal, mol-ecules are linked by weak C-H?O inter-actions into infinite chains along the c axis.

SUBMITTER: Li C 

PROVIDER: S-EPMC3200822 | biostudies-other | 2011 Sep

REPOSITORIES: biostudies-other

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1,1'-(2,5-Dimethyl-thio-phene-3,4-di-yl)diethanone.

Li Chengpeng C   Qi Qiaozheng Q   Wang Sheng S   Ding Guohua G  

Acta crystallographica. Section E, Structure reports online 20110802 Pt 9

The title compound, C(10)H(12)O(2)S, crystallizes with four mol-ecules in the asymmetric unit. The main conformational difference between these mol-ecules is the orientation of the acetyl groups with respect to the ring. Whereas one acetyl group is only slightly twisted with respect to the thio-phene ring [C-C-C-O torsion angles = 165.7 (4), -164.6 (4), 164.3 (4) and -163.6 (4)°], the other acetyl group is markly twisted out of the ring plane [C-C-C-O torsion angles = -61.2 (6), 61.3 (7), -59.7   ...[more]

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