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2,5-Bis(methylthio)-1,4-benzoquinone and 2-methyl-3-(methylsulfonyl)-benzo[b]thiophene
Parvez, Masood,Mesher, Shaun T.,Clark, Peter D.
, p. 574 - 576 (2000)
The structure of 2,5-bis(methylthio)-1,4-benzoquinone, C8H8-O2S2, is composed of an essentially planar centrosymmetric benzoquinone substituted with two methylthio groups. The important bond distances are S - Csp3 1.788 (2) and S - Csp2 1.724 (2) A, and the two Csp2 - Csp2 distances are 1.447 (3) and 1.504 (3) A, which differ significantly. There are short S...S interactions of 3.430 (1) A and Csp2 - H...O-type contacts forming a dimeric motif with graph set R22(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 - Csp2 1.734 (3), S = O 1.434 (4) and C - Caromatic 1.389 (10) A. The exocyclic S - Csp2 and S - Csp3 distances are 1.759 (4) and 1.763 (5) A, respectively.
