An estimate of the reduction potential of B(C6F5)3 from electrochemical measurements on related mesityl boranes

被引:72
作者
Cummings, SA
Iimura, M
Harlan, CJ
Kwaan, RJ
Trieu, IV
Norton, JR
Bridgewater, BM
Jäkle, F
Sundararaman, A
Tilset, M
机构
[1] Rutgers State Univ, Dept Chem, Newark, NJ 07102 USA
[2] Columbia Univ, Dept Chem, New York, NY 10027 USA
[3] Univ Oslo, Dept Chem, N-0315 Oslo, Norway
关键词
D O I
10.1021/om050003q
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
MesB(C6F5)(2) (1) has been prepared from MesMgBr and FB(C6F5)(2)(OEt2)-O-., while Mes(2)B(C6F5) (2) is readily available from CuC6F5 and Mes(2)BBr. The reduction potential E degrees of 1 vs Cp2Fe0/+ in THF is - 1.72 V, while that of 2 is -2.10 V, and that Of Mes(3)B (3) is -2.73 V. B-11 and H-1 NMR show that neither I nor 2 binds THF significantly. These results have been used to estimate the reduction potential of B(C6F5)(3) in THF as -1.17 V vs Cp2Fe0/+ or as -0.64 V vs SCE.
引用
收藏
页码:1565 / 1568
页数:4
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