Radical cations of dithia- and tetraselenaradialenes with restricted 
delocalization of the unpaired electron

Gleiter, Rolf; Röckel, Harald; Neugebauer, Franz A.

doi:10.1021/jo951691y

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Radical cations of dithia- and tetraselenaradialenes with restricted delocalization of the unpaired electron

MPS-Authors

/persons/resource/persons94523

Neugebauer, Franz A.
Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;

External Resource

http://pubs.acs.org/cgi-bin/article.cgi/joceah/1996/61/i05/pdf/jo951691y.pdf
(Any fulltext)

http://dx.doi.org/10.1021/jo951691y
(Any fulltext)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Gleiter, R., Röckel, H., & Neugebauer, F. A. (1996). Radical cations of dithia- and tetraselenaradialenes with restricted delocalization of the unpaired electron. Journal of Organic Chemistry, 61(5), 1739-1741. doi:10.1021/jo951691y.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-32B2-2

Abstract

The radical cations of the permethylated dithia[6]radialene 1 and the tetraselena[8]radialene 2 have been investigated by ESR− and ENDOR−spectroscopy. It is shown that in the radical cation of 1 the unpaired electron is delocalized only in one half of the molecule. The magnitude of the 33S coupling constant suggests a restricted localization within the 2,3−dithiatetramethyl−butadiene unit. We ascribe the slow electron transfer from one part of the molecule to the other to steric effects. The analysis of the ESR spectrum of 2+ shows that only two of the four selenium atoms are involved. The delocalization of the unpaired electron is restricted to only one of the divinyl diselenide moieties with a slow electron transfer rate to the other one