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Title: From {sup 3}He{at}C{sub 60} to {sup 3}H{at}C{sub 60}: Hot-atom incorporation of tritium in C{sub 60}

Abstract

The introduction of tritium into the cavity of C{sub 60} using hot-atom chemistry was studied. Neutron irradiation of {sup 3}He in {sup 3}He{at}C{sub 60} produced tritium ions and atoms which enter the C{sub 60}. {sup 3}H{at}C{sub 60} was detected with a scintillation counter. The Bingel reaction was carried out on this material under conditions so that the monoadduct formed predominantly, and the products were probed for tritium activity. Analysis with {sup 3}He NMR gave a peak with the characteristic {sup 3}He shift for the malonate product. The product fractions gave only 33% of the original activity; most was recovered in the unreacted C{sub 60} portion. No reaction was observed between C{sub 60} and the stable radical di-tert-butylnitroxide; all tritium activity was recovered in the C{sub 60} peak. These results suggest similarities in properties between {sup 3}H{at}C{sub 60} and pure C{sub 60}, implying that the tritium exists as a free atom inside the molecule.

Authors:
; ;
Publication Date:
Research Org.:
Yale Univ., New Haven, CT (US)
Sponsoring Org.:
National Science Foundation (NSF); USDOE
OSTI Identifier:
20034416
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory
Additional Journal Information:
Journal Volume: 104; Journal Issue: 17; Other Information: PBD: 4 May 2000; Journal ID: ISSN 1089-5639
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; HELIUM 3; TRITIUM; HOT ATOM CHEMISTRY; FULLERENES; NEUTRON REACTIONS

Citation Formats

Khong, A., Cross, R.J., and Saunders, M. From {sup 3}He{at}C{sub 60} to {sup 3}H{at}C{sub 60}: Hot-atom incorporation of tritium in C{sub 60}. United States: N. p., 2000. Web. doi:10.1021/jp994289m.
Khong, A., Cross, R.J., & Saunders, M. From {sup 3}He{at}C{sub 60} to {sup 3}H{at}C{sub 60}: Hot-atom incorporation of tritium in C{sub 60}. United States. doi:10.1021/jp994289m.
Khong, A., Cross, R.J., and Saunders, M. Thu . "From {sup 3}He{at}C{sub 60} to {sup 3}H{at}C{sub 60}: Hot-atom incorporation of tritium in C{sub 60}". United States. doi:10.1021/jp994289m.
@article{osti_20034416,
title = {From {sup 3}He{at}C{sub 60} to {sup 3}H{at}C{sub 60}: Hot-atom incorporation of tritium in C{sub 60}},
author = {Khong, A. and Cross, R.J. and Saunders, M.},
abstractNote = {The introduction of tritium into the cavity of C{sub 60} using hot-atom chemistry was studied. Neutron irradiation of {sup 3}He in {sup 3}He{at}C{sub 60} produced tritium ions and atoms which enter the C{sub 60}. {sup 3}H{at}C{sub 60} was detected with a scintillation counter. The Bingel reaction was carried out on this material under conditions so that the monoadduct formed predominantly, and the products were probed for tritium activity. Analysis with {sup 3}He NMR gave a peak with the characteristic {sup 3}He shift for the malonate product. The product fractions gave only 33% of the original activity; most was recovered in the unreacted C{sub 60} portion. No reaction was observed between C{sub 60} and the stable radical di-tert-butylnitroxide; all tritium activity was recovered in the C{sub 60} peak. These results suggest similarities in properties between {sup 3}H{at}C{sub 60} and pure C{sub 60}, implying that the tritium exists as a free atom inside the molecule.},
doi = {10.1021/jp994289m},
journal = {Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory},
issn = {1089-5639},
number = 17,
volume = 104,
place = {United States},
year = {2000},
month = {5}
}