Oxidative ring contraction of 2-phenyl-1,3-dithiane in ZSM-5: Restricted mobility of 1,2-dithiolane radical cations in zeolite channels

Heinz D. Roth, Kui Shen, Prasad S. Lakkaraju, Lorenzo Fernández

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Abstract

Incorporation of 2-phenyl-1,3-dithiane 1 into ZSM-5 generated 1,2-dithiolane radical cation 2.+, the EPR spectrum of which shows an orthorhombic powder pattern (g1 = 2.0293, g2 = 2.0193, g3 = 2.0030); each g component showed a 1:4:6:4:1 pattern (a1 = 10.5, a2 = 9.3 and a3 = 9.2 G) due to coupling to four equivalent 1H nuclei, suggesting that the pseudo-axial and -equatorial α-protons undergo conformational equilibration whereas the sulfur centers are held stationary on the EPR time scale.

Original languageEnglish (US)
Pages (from-to)2447-2448
Number of pages2
JournalChemical Communications
Issue number22
DOIs
Publication statusPublished - Nov 21 1998

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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