作者:Ellen M. Matson、Stacey R. Opperwall、Phillip E. Fanwick、Suzanne C. Bart
DOI:10.1021/ic4009812
日期:2013.6.17
A series of U(IV) complexes, (Rap)2U(THF)2 [R = tert-butyl (t-Bu) (1), adamantyl (Ad) (2), diisopropylphenyl (dipp) (3)], supported by the redox-active 4,6-di-tert-butyl-2-(R)amidophenolate ligand, have been synthesized by salt metathesis of 2 equiv of the alkali metal salt of the ligand, M2[Rap] [M = K (1 and 2), Na (3)], with UCl4. Exposure of these uranium complexes to 1 equiv of PhICl2 results
一系列U(IV)配合物,(R ap)2 U(THF)2 [R =叔丁基(t- Bu)(1),金刚烷基(Ad)(2),二异丙基苯基(dipp)(3)]由氧化还原活性的4,6-二叔丁基-2-(R)酰胺基酚盐配体支撑,通过配位基团的2当量碱金属盐M 2的盐复分解反应合成[ M a [ R ap] [ M = K(1和2),Na(3)],UCL 4。将这些铀络合物暴露于1当量的PhICl 2中导致铀的氧化加成反应,形成双-(4,6-二叔丁基-2-(R)亚氨基半醌)([ R isq] 1–)二氯化铀(IV)二聚体,[(R isq)2 UCL] 2(μ 2 -Cl)2 [R =吨-Bu(4),信息(5),DIPP(6)]。将碘添加到1种形式(tBu isq)2 UI 2(THF)(7)中,而I 2与2和3的反应性导致分解。配合物1 – 7的特征在于1 H NMR和电子吸收光谱。X射线晶体被采用的阐发结构参数2,3,5,和7。