Preparation and structural characterization of two kinetically stable chlorofullerenes, c(60)cl(28) and c(60)cl(30).
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Biomedical subjects
Alexey A Popov
Publications and source records attributed to Alexey A Popov.
Th-C60F24.
The regioselective fluorination of Th-C60Br24 with XeF2 in anhydrous HF at 25 degrees C produced Th-C60F24, which is isostructural with Th-C60Br24. The compound, the first example of a fluorofullerene with a noncontiguous pattern of F-bearing sp3 C atoms, was characterized by EI and ESI mass spectrometry and by 19F NMR (single resonance at delta -144 for all 24 F atoms), 13C NMR (two resonances at delta 145.9 (C=C) and delta 83.5 (C-F; JCF = 212 Hz), and FTIR spectroscopy. DFT calculations revealed that at least two other isomers of C60F24 are more stable than Th-C60F24 by >/=280 kJ mol-1, demonstrating that Th-C60F24 is a kinetically stable fluorofullerene.
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The first X-ray crystal structures of halogenated [70]fullerene: C70Br10 and C70Br10.3 Br2.
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