Extended Diaryl Diselenide Radical Cations in Pentasil Zeolite Studied by EPR and Diffuse Reflectance Optical Spectroscopy

Prasad S. Lakkaraju, Kui Shen, Heinz D. Roth, Hermenegildo García

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Incorporation of diaryl diselenides (la, b; R = H, Cl) into pentasil zeolite generated "extended" selenium-centered radical cations (lȧ+, ḃ+). These species are identified by their EPR (gavg = 2.0644, 2.0639) and diffuse reflectance spectra (λmax =520, 550, 950 nm). The relative strength of the two-center three-electron Se-Se bond is compared with the corresponding S-S bond in diphenyl disulfide radical cation.

Original languageEnglish (US)
JournalJournal of Physical Chemistry A
Issue number37
Publication statusPublished - Dec 1 1999


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

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