Synthesis and transformations of metallacycles

Generation of fullerenyl radicals and chemiluminescence in the (C60—R3Al)—O2 system

“…22 is an addi tional argument in favor of the fact that these products are alkyl rather than alkoxy derivatives of С 60 . Thus, of the series of the R • , RO • , and RO 2 • radicals generated in the reaction of R 3 Al with O 2 , only the R • radical interacts with С 60 .…”

“…The energy of the primary emitter 3 СН 3 СНО* is trans ferred to the products of FR transformations. The latter are transformed in reaction (22) into the electron excited states, which are deactivated with the CL emission in reaction (23). The presence or absence of luminescence of 3 СН 3 СНО* in the CL spectrum depends on [С 60 ] 0 .…”

“…Earlier 22 FEH and EF were found in the hydrolyzate (hereinafter LH 1) of the products of cycloalumination of С 60 with triethylaluminum catalyzed by Cp 2 ZrCl 2 . The HPLC chromatograms of the reaction products of the (С 60 -Et 3 Al)-O 2 system and products obtained indepen dently by a described procedure 22 contain the general peaks of С 60 (t r = 8.72 min) and the peaks with t r = 5.76 min. The peaks with t r = 11.61 and 17.34 min are recorded only for the (С 60 -Et 3 Al)-O 2 system (see Fig.…”

Catalytic cyclometalation reaction of unsaturated compounds in synthesis of magnesa- and aluminacarbocycles

“…In order to develop these investigations the authors [56][57][58] have studied cycloalumination of fullerene [60] with AlEt 3 taken in excess. It was shown that under chosen conditions ($23°C, 36 h, toluene) in the presence of Cp 2 ZrCl 2 catalyst the reaction occurs at a 6,6-double bond providing access to adducts with annulated to the fullerene spheroid aluminacyclopentane moieties, the number of which is dependent upon the ratio of the starting reagents.…”

22 Fullerenes

“…159 Hydrogen containing ethyl [60]fullerenes (with up to 12 groups present) result from the reaction of [60]fullerene with an excess of AlEt 3 in the presence of a catalyst. 160 Moreover, [60]-and [70]-fullerenes react with ketones under EI mass spectrometry conditions yielding alkyl-and phenyl- [60]fullerene derivatives. 161 A model for the repetitive addition of radicals to [60]fullerene has been developed which accounts for the formation of the experimentally known C 60 R 6 and predicts structures for both C 60 R 12 and C 60 R 18 .…”