Extended diaryl diselenide radical cations in pentasil zeolite studied by EPR and diffuse reflectance optical spectroscopy

Authors
Lakkaraju, PS Shen, K Roth, HD Garcia, H
Citation
Ps. Lakkaraju et al., Extended diaryl diselenide radical cations in pentasil zeolite studied by EPR and diffuse reflectance optical spectroscopy, J PHYS CH A, 103(37), 1999, pp. 7381-7384
Citations number
34
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY A
ISSN journal
10895639 → ACNP
Volume
103
Issue
37
Year of publication
1999
Pages
7381 - 7384
Database
ISI
SICI code
1089-5639(19990916)103:37<7381:EDDRCI>2.0.ZU;2-R
Abstract
Incorporation of diaryl diselenides (1a, b; R = H, Cl) into pentasil zeolit e generated "extended" selenium-centered radical cations (1a(.+), b(.+)). T hese species are identified by their EPR (g(avg) = 2.0644, 2.0639) and diff use reflectance spectra (lambda(max) = 520, 550, 950 nm). The relative stre ngth of the two-center three-electron Se-Se bond is compared with the corre sponding S-S bond in diphenyl disulfide radical cation.