TY - JOUR
T1 - Electrosynthesis and structural characterization of two (C6H5CH2)4C60 isomers
AU - Kadish, Karl M.
AU - Gao, Xiang
AU - Van Caemelbecke, Eric
AU - Suenobu, Tomoyoshi
AU - Fukuzumi, Shunichi
PY - 2000/2/2
Y1 - 2000/2/2
N2 - The structural, spectral, and electrochemical properties of two (C6H5CH2)4C60 isomers are reported. One is designated as the 1,4; 1,4- (C6H5CH2)4C60 isomer and the other as the 1,4; 1,2-isomer of (C6H5CH2)4C60. The two isomers were isolated by HPLC from the products obtained by a reaction between [(C6H5CH2)2C60]2- and C6H5CH2Br. X- ray data show that the two (C6H5CH2)4C60 isomers differ from one another by the position of only one benzyl group and that, in each compound, the four benzyl addends are in close proximity. Both (C6H5CH2)4C60 isomers undergo three one-electron reductions in PhCN containing 0.1 M tetra- n-butylammonium perchlorate (TBAP) and have E( 1/2 ) values which are more negative than values for either C60 or 1,4-(C6H5CH2)2C60. The monoanions of 1,4;1,4- and 1,4;1,2-(C6H5CH2)4C60 were electrogenerated by bulk controlled-potential electrolysis in PhCN containing 0.2 M TBAP and characterized as to their spectral properties in both the visible and near- infrared regions.
AB - The structural, spectral, and electrochemical properties of two (C6H5CH2)4C60 isomers are reported. One is designated as the 1,4; 1,4- (C6H5CH2)4C60 isomer and the other as the 1,4; 1,2-isomer of (C6H5CH2)4C60. The two isomers were isolated by HPLC from the products obtained by a reaction between [(C6H5CH2)2C60]2- and C6H5CH2Br. X- ray data show that the two (C6H5CH2)4C60 isomers differ from one another by the position of only one benzyl group and that, in each compound, the four benzyl addends are in close proximity. Both (C6H5CH2)4C60 isomers undergo three one-electron reductions in PhCN containing 0.1 M tetra- n-butylammonium perchlorate (TBAP) and have E( 1/2 ) values which are more negative than values for either C60 or 1,4-(C6H5CH2)2C60. The monoanions of 1,4;1,4- and 1,4;1,2-(C6H5CH2)4C60 were electrogenerated by bulk controlled-potential electrolysis in PhCN containing 0.2 M TBAP and characterized as to their spectral properties in both the visible and near- infrared regions.
UR - http://www.scopus.com/inward/record.url?scp=0033952873&partnerID=8YFLogxK
U2 - 10.1021/ja993029f
DO - 10.1021/ja993029f
M3 - Article
AN - SCOPUS:0033952873
SN - 0002-7863
VL - 122
SP - 563
EP - 570
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 4
ER -