Reversible Diels-Alder addition to fullerenes: a study of equilibria using (3)He NMR spectroscopy

Reversible Diels-Alder addition to fullerenes: a study of equilibria using (3)He NMR spectroscopy

3He NMR spectroscopy has been used to study the equilibria of Diels-Alder additions of 9,10-dimethyl anthracene (DMA) to (3)He@C(60) and (3)He@C(70). Spectra of a series of equilibrium mixtures showed peaks for the isomeric adducts. One monoadduct, six bis-adducts, eleven tris-adducts, and ten tetra...

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Veröffentlicht in:Journal of the American Chemical Society 2001-01, Vol.123 (2), p.256-259
Hauptverfasser: Wang, G W, Saunders, M, Cross, R J
Format: Artikel
Sprache:eng
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Zusammenfassung:3He NMR spectroscopy has been used to study the equilibria of Diels-Alder additions of 9,10-dimethyl anthracene (DMA) to (3)He@C(60) and (3)He@C(70). Spectra of a series of equilibrium mixtures showed peaks for the isomeric adducts. One monoadduct, six bis-adducts, eleven tris-adducts, and ten tetrakis-adducts of DMA to C(60) were seen. One monoadduct and three bis-adducts of C(70) were detected. Equilibrium constants were found for these reactions and values for DeltaG, DeltaH, and DeltaS were obtained.
ISSN:0002-7863
DOI:10.1021/ja001346c