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Reaction of C60, C70, C76, C78, and C84 with ozone at 23.5°C

✍ Scribed by Dieter Heymann; L. P. Felipe Chibante

Book ID
104589588
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
289 KB
Volume
112
Category
Article
ISSN
0165-0513

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✦ Synopsis

Abstract

C~60~, C~70~, C~76~, C~78~, and C~84~ dissolved in toluene, were treated at 23.5°C with ozone. The concentrations of all five fullerenes decreased with increasing dose of ozone, but C~60~, C~76~, C~78~, and C~84~ transformed significantly faster than C~70~. Oxides of C~60~ and C~70~, but not of the other fullerenes, were observed in the ozonated solutions. We assume that all five fullerenes form molozonides, which swiftly lose molecular oxygen to form oxides. We assume further that the molozonide always forms at an interpentagonal bond. The π‐bond orders calculated by Taylor for such bonds may explain the faster ozonation of C~76~, C~78~, and C~84~, but probably not of C~60~. We suggest that the “equatorial belt” of 15 hexagons of C~70~, with its relatively high π density may be the cause for the slower rate of ozonation of C~70~.

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