ESR studies of the reaction of alkyl radicals with C{sub 60}

Journal Article · Thu Apr 30 04:00:00 EDT 1992 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100188a006· OSTI ID:232253

Morton, J R; Preston, K F ^[1]; Krusic, P J ^[2]

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1. Steacie Inst. for Molecular Sciences, Ottawa, Ontario (Canada)
2. E.I. du Pont de Nemours & Co., Wilmington, DE (United States); and others

Photolytically and thermally generated alkyl radicals (R{sup {lg_bullet}} = tert-butyl, 1-adamantyl, isopropyl, ethyl, and benzyl) react with C{sub 60} to form R-C{sub 60} {sup {lg_bullet}} radical adducts which have been identified by the proton and {sup 13}C hyperfine interactions obtained from their electron spin resonance spectra. Consideration of the {sup 13}C spectra shows that the unpaired electron in R-C{sub 60}{sup {lg_bullet}} is mostly confined to two fused, six-membered rings on the C{sub 60} surface, having the substituent R at one of the points of fusion. Each half of the resulting radical structure of C{sub s} symmetry can be compared with a cyclohexadienyl radical. Extensive delocalization of the unpaired electron over the C{sub 60} sphere is ruled out. 21 refs., 2 figs., 1 tab.

• Sponsoring Organization: USDOE
• OSTI ID: 232253
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 9 Vol. 96; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ALKYL RADICALS
BENZYL RADICALS
CHEMICAL REACTIONS
ELECTRON SPIN RESONANCE
ETHYL RADICALS
FULLERENES
ISOPROPYL RADICALS