Molecular structure of the C70 fullerene
β Scribed by Alexander V. Nikolaev; T.John S. Dennis; Kosmas Prassides; Alan K. Soper
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 454 KB
- Volume
- 223
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The molecular structure of C,e has been studied between 20 and 300 K using high-Q pulsed powder neutron difYraction of solid (&. The intra-and inter-molecular pair correlation functions were decoupled, allowing accurate determination of the intramolecular structure of CT,,. The C-C bond lengths range between R 1.38 and 1.48 A with no evidence of pinching in the equatorial region. There is essentially no change in the intermolecular structure on cooling, in contrast to the severe changes in the intermolecular pair correlation function that accompany orientational ordering.
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Photophysical properties of the singlet and triplet states of the fullerenes, &,, and CrO, have been investigated in toluene, benzene, hexane and ethanol solutions by pica-and nano-second laser flash photolysis techniques. Lifetimes, extinction coefficients, quantum efficiencies of the formation of
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