Steckel, JA and Jordan, KD and Avouris, P
(2002)
Oxygen atom reactions with circumtrindene and related molecules: Analogues for the oxidation of nanotube caps.
Journal of Physical Chemistry A, 106 (11).
2572 - 2579.
ISSN 1089-5639
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Abstract
Circumtrindene, a C36H12 open geodesic dome with alternating five- and six-membered rings, is of interest as a vesicle for carrying out chemical reactions and also as a model for certain carbon nanotube caps. Here the addition of an oxygen atom to circumtrindene is examined by means of density functional calculations. O-atom addition to a C-C bond shared between the central and adjacent hexagons gives an epoxide structure while O-atom addition to a C-C bond shared by the central hexagon and an adjacent pentagon results in cleavage of the C-C bond and an R-O-R insertion product. Despite their structural dissimilarity, the two oxidation products are predicted to be of comparable stability (with binding energies of - 74.9 and - 78.7 kcal/mol, respectively), and to have a large (55.7 kcal/mol) barrier for interconversion.
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