Open-Cage Fullerene as Molecular Container for F- , Cl- , Br- and I.
Angew Chem Int Ed Engl
; 61(52): e202212090, 2022 Dec 23.
Article
en En
| MEDLINE
| ID: mdl-36316627
ABSTRACT
A 19-membered open-cage fullerene derivative was prepared from C60 in 7â
steps and 5.5 % yield through the peroxide-mediate pathway. There are four carbonyl groups, an ether oxygen and a quinoxaline moiety on the rim of the orifice. A chloride anion could be inserted into its cavity by heating with hydrochloric acid at 60 °C for 4â
h. Encapsulation of fluoride, bromide and iodide anions was also achieved at slightly more forcing conditions, 90 °C for 14â
h. Single crystal X-ray structures of the sodium salt of the chloride and the bromide encapsulated derivatives were obtained, which showed the halide anion in the center of the cavity and two sodium cations connecting two cages through coordination to the oxygen atoms on the rim of the orifices. The halide encapsulation ratio is quantitative in the isolated products.
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01-internacional
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MEDLINE
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En
Revista:
Angew Chem Int Ed Engl
Año:
2022
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Article