Automated HPLC Separation of Endohedral Metallofullerene Sc@C2n and Y@C2n Fractions
Analytical Chemistry1994Vol. 66(17), pp. 2675–2679
Citations Over TimeTop 10% of 1994 papers
Steven Stevenson, Harry C. Dorn, P. Burbank, Kim Harich, J. Haynes, Ching‐Hwa Kiang, J. Salem, M. S. DeVries, P. H. M. van Loosdrecht, et al.
Abstract
We describe an automated HPLC separation of the endohedral metallofullerenes such as Sc@C2n and Y@C2n from empty-cage fullerenes utilizing two polystyrene chromatographic columns (500 and 1000 Å) in series. Rapid separation of the metallofullerene fraction from the empty-cage fullerenes (e.g., C60) under anaerobic conditions is achieved. For the isolated Sc@C2n fraction, all even-carbon-membered species from Sc2@C74 to Sc2@C104 were identified by negative-ion chemical ionization mass spectrometry. In addition, Sc3@C82 was a prominent component of this fraction. For the separated Y@C2n sample, the mass spectral data indicate the presence of Y@C82 and all even-carbon-numbered diyttrium species from Y2@C82 to Y2@C104.
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