ESR study of radicals formed by the reduction of α-diketones C(O)C(O)CF3 (R=(CF3)2CF, C6F5, (CF3)3C) with several group I–III metals
作者:E. N. Shaposhnikova、S. R. Sterlin、S. P. Solodovnikov、N. N. Bubnov、I. V. Stankevich、A. L. Chistyakov、B. L. Tumanskii
DOI:10.1007/bf02494272
日期:1998.11
anions formed by reduction of α-diketones RC(O)C(O)CF3 (R=(CF3)2CF, C6F5, (CF3)3C) with metals (Li, Na, K, Mg, Cd, Zn, Hg, In, and TI) in THF were studied. For R=(CF3)2CF and C6F5, the radical anions are formed ascis-isomers, whereas for R=(CF3)3C,trans-isomers are obtained. Line broadening due to solvation and desolvation of the cation is observed in the latter case. The reduction of α-diketone (CF3)2CFC(O)C(O)CF3
α-二酮 RC(O)C(O)CF3 (R=(CF3)2CF, C6F5, (CF3)3C) 与金属 (Li, Na, K, Mg, Cd,研究了 THF 中的 Zn、Hg、In 和 TI)。对于 R=(CF3)2CF 和 C6F5,自由基阴离子形成为顺式异构体,而对于 R=(CF3)3C,获得反式异构体。在后一种情况下观察到由于阳离子的溶剂化和去溶剂化导致的谱线变宽。α-二酮 (CF3)2CFC(O)C(O)CF3 与 II 族金属(Mg、Cd、Zn)的还原导致自由基对的形成。