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Groundwork for a rational synthesis of C-60: Cyclodehydrogenation of a C60H30 polyarene
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UNSPECIFIED (2001) Groundwork for a rational synthesis of C-60: Cyclodehydrogenation of a C60H30 polyarene. SCIENCE, 294 (5543). pp. 828-831. ISSN 0036-8075.
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Abstract
A C60H30 polycyctic aromatic hydrocarbon (PAH) that incorporates all 60 carbon atoms and 75 of the 90 carbon-carbon bonds required to form the fullerene C-60 has been synthesized in nine steps by conventional laboratory methods. Laser irradiation of this C60H30 PAH at 337 nanometers induces hydrogen loss and the formation of C-60, as detected by mass spectrometry. A specifically labeled [C-13(3)] C60H30 retains all three C-13 atoms during the cage formation process. A structurally related C48H24 PAH that lacks the three peripheral benzene rings cannot be transformed into C-60, whereas the next higher homolog, a C80H40 PAH, degrades to the C60H30 PAH, which then loses hydrogen to give [60]fullerene. These control experiments verify that the C-60 is formed by a molecular transformation directly from the C60H30 PAH and not by fragmentation and recombination in the gas phase.
Item Type: | Journal Article | ||||
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Subjects: | Q Science | ||||
Journal or Publication Title: | SCIENCE | ||||
Publisher: | AMER ASSOC ADVANCEMENT SCIENCE | ||||
ISSN: | 0036-8075 | ||||
Official Date: | 26 October 2001 | ||||
Dates: |
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Volume: | 294 | ||||
Number: | 5543 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 828-831 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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