2,5-Bis(methylthio)-1,4-benzoquinone and 2-methyl-3-(methylsulfonyl)benzo[b]thiophene

The structure of 2,5-bis(methylthio)-1,4-benzoquinone, C8H8O2S2, is composed of an essentially planar centrosymmetric benzoquinone substituted with two methylthio groups. The important bond distances are S-Csp(3) 1.788 (2) and S-Csp(2) 1.724 (2) Angstrom, and the two Csp(2)-Csp(2) distances are 1.447 (3) and 1.504 (3) Angstrom, which differ significantly. There are short S ... S interactions of 3.430 (1) Angstrom and Csp(2)-H ... O-type contacts forming a dimeric motif with graph set R-2(2)(8). The structure of 2-methyl-3-(methylsulfonyl)benzo[b]thiophene, C10H10O2S2, is composed of an essentially planar benzothiophene moiety substituted with methyl and methylsulfonyl groups. The mean values of the important bond distances are endocyclic S-Csp(2) 1.734 (3), S=O 1.434 (4) and C-C-aromatic 1.389 (10) Angstrom. The exocyclic S-Csp(2) and S-Csp(3) distances are 1.759 (4) and 1.763 (5) Angstrom, respectively.