作者:Aidan R. McDonald、Michael R. Bukowski、Erik R. Farquhar、Timothy A. Jackson、Kevin D. Koehntop、Mi Sook Seo、Raymond F. De Hont、Audria Stubna、Jason A. Halfen、Eckard Münck、Wonwoo Nam、Lawrence Que
DOI:10.1021/ja1045428
日期:2010.12.8
while EXAFS analysis suggested that 3 was an O-bound iron(II)-sulfinate complex (Fe-O = 1.95 Å, Fe-S = 3.26 Å). The addition of a third equivalent of peracid resulted in the formation of yet another compound, 4, which showed electronic absorption properties typical of an oxoiron(IV) species. Mössbauer spectroscopy confirmed 4 to be a novel iron(IV) compound, different from 2, and EXAFS (Fe═O = 1.64
[Fe(II)(TMCS)]PF6 (1, TMCS = 1-(2-mercaptoethyl)-4,8,11-trimethyl-1,4,8,11-tetraazacyclotetradecane)在 -20 °C 的甲醇中使用过酸没有产生氧代铁 (IV) 络合物 (2, [Fe(IV)(O)(TMCS)]PF6),如先前在强碱 (KO(t)卜)。相反,添加 1 当量的过酸导致 50% 的 1 消耗。添加第二当量的过酸导致 1 的完全消耗和新物种 3 的形成,如通过 UV-vis、ESI- MS 和穆斯堡尔光谱。ESI-MS 显示 3 被公式化为 [Fe(II)(TMCS) + 2O](+),而 EXAFS 分析表明 3 是 O-结合的亚磺酸铁 (II) 络合物(Fe-O = 1.95 Å, Fe-S = 3.26 Å)。加入三分之一当量的过酸导致形成另一种化合物 4,它显示出氧代铁 (IV)