title: 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.
authors: Chengpeng
authors: C
authors: Li
authors: Qiaozheng
authors: Q
authors: Qi
authors: Sheng
authors: S
authors: Wang
authors: Guohua
authors: G
authors: Ding