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Crystal structures of dibenzo[ce]-1,2-dithiine and its related oxides

Aucott, S M and Milton, H L and Robertson, S D and Slawin, A M Z and Woollins, J D (2005) Crystal structures of dibenzo[ce]-1,2-dithiine and its related oxides. Heteroatom Chemistry, 16 (5). pp. 346-351. ISSN 1042-7163

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Abstract

The X-ray structures of dibenzo[ce]-1,2dithiine, dibenzo[ce]-1,2-dithiine-5,5-dioxide, dibenzo[ce]-1,2-dithiine-5,5,6-trioxide, and dibenzo[ce]-1, 2-dithiine-5,5,6,6-tetraoxide are reported and compared with the related "constrained" naphthalene derivatives. The S-S distances vary upon oxidation of the S centers in the order S-S < SO-S > SO2-S < SO2-SO > SO2-SO2 i.e. the most oxidized sulfur atoms do not lead to the longest bond lengths.