AUTOMATED HPLC SEPARATION OF ENDOHEDRAL METALLOFULLERENE SC-AT-C-2N AND Y-AT-C-2N FRACTIONS

被引:63
作者
STEVENSON, S
DORN, HC
BURBANK, P
HARICH, K
HAYNES, J
KIANG, CH
SALEM, JR
DEVRIES, MS
VANLOOSDRECHT, PHM
JOHNSON, RD
YANNONI, CS
BETHUNE, DS
机构
[1] VIRGINIA POLYTECH INST & STATE UNIV,DEPT CHEM,BLACKSBURG,VA 24061
[2] CALTECH,BECKMAN INST,CTR MAT & MOLEC SIMULAT,PASADENA,CA 91125
[3] IBM CORP,ALMADEN RES CTR,DIV RES,SAN JOSE,CA 95120
关键词
D O I
10.1021/ac00089a013
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
We describe an automated HPLC separation of the endohedral metallofullerenes such as Sc@C-2n and Y@C-2n from empty-cage fullerenes utilizing two polystyrene chromatographic columns (500 and 1000 Angstrom) in series. Rapid separation of the metallofullerene fraction from the empty-cage fullerenes (e.g., C-60) under anaerobic conditions is achieved. For the isolated Sc@C-2n fraction, all even-carbon-membered species from Sc-2@C-74 to Sc-2@C-104 were identified by negative-ion chemical ionization mass spectrometry. In addition, Sc-3@C-82 was a prominent component of this fraction. For the separated Y@C-2n sample, the mass spectral data indicate the presence of Y@C-82 and all even-carbon-nurnbered diyttrium species from Y-2@C-82 to Y-2@C-104.
引用
收藏
页码:2675 / 2679
页数:5
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