Synthesis of Ar@C60 using molecular surgery†
Sally
Bloodworth, 
a
Gabriela
Hoffman,
a
Mark C.
Walkey,
a
Julie M.
Herniman,
a
Malcolm H.
Levitt
a
and
Richard J.
Whitby
*a
a
Gabriela
Hoffman,
a
Mark C.
Walkey,
a
Julie M.
Herniman,
a
Malcolm H.
Levitt
a
and
Richard J.
Whitby
*a
Abstract
Synthesis of Ar@C60 is described, using a route in which high-pressure argon filling of an open-fullerene and photochemical desulfinylation are the key steps for >95% encapsulation of the noble gas. Enrichment by recycling HPLC leads to quantitative incorporation of argon in the product endofullerene, with a mass recovery of tens of milligrams, allowing the first characterisation of fine structure in the solution 13C NMR spectrum.
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