Analysis of Isomers of the Higher Fullerenes by 3He NMR Spectroscopy

Autor:	François Diederich, Weimei Luo, Andreas Herrmann, R.J. Cross, A. Gonzalez, Christoph Gesenberg, W. E. Billups, Martin Saunders, Hugo A. Jiménez-Vázquez, Robert C. Haddon
Rok vydání:	1995
Předmět:	Fullerene Chemistry Analytical chemistry chemistry.chemical_element General Chemistry Nuclear magnetic resonance spectroscopy Biochemistry Catalysis Higher fullerenes NMR spectra database Colloid and Surface Chemistry Physical chemistry Molecule Helium
Zdroj:	Journal of the American Chemical Society. 117:9305-9308
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja00141a023
Popis:	The high-pressure, high-temperature {sup 3}He labeling procedure previously used with C{sub 60} and C{sub 70} was applied to mixtures of isomers of the higher fullerenes C{sub 76}, C{sub 78}, and C{sub 84}. Sufficient helium was introduced inside them to allow helium NMR spectra to be obtained. Each isomer yields a single, sharp, characteristic NMR peak resolved from the others. Our results show that there are more isomers of these fullerenes than previously reported. Three C{sub 78} isomers and three C{sub 84} isomers have been described, but we have shown that there are at least five C{sub 78} isomers and nine C{sub 84} isomers. 39 refs., 2 figs., 1 tab.
Databáze:	OpenAIRE
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