Pyrolysis of hexamethylcyclotrisilthiane and tetramethylcyclodisilthiane in the presence of cyclic siloxanes: evidence for the intermediacy of dimethylsilathione |
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| Authors: | H.S.Dilanjan Soysa William P. Weber |
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| Affiliation: | Department of Chemistry, University of Southern California, Los Angeles, California 90007 U.S.A. |
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| Abstract: | Copyrolysis of hexamethylcyclotrisilthiane and hexamethylcyclotrisiloxane yields 1,1,3,3,5,5,7,7-octamethyl-2,4,6-trioxo-1,3,5,7-tetrasila-8-thiacyclooctane. Likewise, copyrolysis of hexamethylcyclotrisilthiane or tetramethylcyclodisilthiane with 1,1,3,3-tetramethyl-2-oxa-1,3-disilacyclopentane yields 1,1,3,3,5,5-hexamethyl-2-oxa-1,3,5-trisila-4-thiacycloheptane. Possible mechanisms are discussed. |
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