Reaction of [U(SiMe2NPh)3-tacn}Cl] with LiNEt2 or LiNPh2 affords the corresponding amide compounds, [U(SiMe2NPh)3-tacn}(NR2)] (R = Et (1), R = Ph (2)). The complexes have been fully characterized by spectroscopic methods and the solid-state structure of 1 was determined by single-crystal X-ray diffraction analysis. The six nitrogen atoms of the tris(dimethylsilylanilide)triazacyclononane ligand are in a trigonal prismatic configuration with the nitrogen atom of the diethylamide ligand capping one of the trigonal faces of the trigonal prism. Crystallization of 2 from CH3CN solution gave crystals of the six-membered heterocycle [U(SiMe2NPh)3-tacn}κ2-(HNC(Me))2CCN}] (3). The reactivity of the amides was investigated. Both compounds undergo acid–base reactions with protic substrates such as HOC6H2-2,4,6-Me3, 3,5-Me2pzH (pz = pyrazolyl) and HSC5H4N to give the corresponding [U(SiMe2NPh)3-tacn}X] (X = OC6H2-2,4,6-Me3 (4), 3,5-Me2pzH (5), κ2-SC5H4N (6)) complexes. The solid-state structures of 3 and 6 were determined by single-crystal X-ray diffraction and revealed that the compounds are eight-coordinate with dodecahedral geometry.
将[U(SiMe2NPh)3-tacn}Cl]与LiNEt2或LiNPh2反应可以得到相应的酰胺化合物,[U(SiMe2NPh)3-tacn}(NR2)](R = Et(1),R = Ph(2))。这些配合物已通过光谱方法完全表征,并且1的固态结构通过单晶X射线衍射分析确定。三( dimethylsilylanilide)三氮杂环诺烷
配体的六个氮原子以三角棱柱配置排列,二乙酰胺
配体的氮原子位于三角棱柱的一个三角面上。由CH3CN溶液结晶得到的2形成了六元杂环晶体[U(SiMe2NPh)3-tacn}κ2-(HNC(Me))2CCN}](3)。对酰胺的反应性进行了研究。两个化合物都与质子性底物如HOC6H2-2,4,6-Me3和3,5-Me2pzH(pz = 嘧唑基)及HSC5H4N发生酸碱反应,生成相应的[U(SiMe2NPh)3-tacn}X](X = OC6H2-2,4,6-Me3(4),3,5-Me2pzH(5),κ2-SC5H4N(6))配合物。3和6的固态结构通过单晶X射线衍射确定,显示这些化合物为八配位且具有十二面体几何构型。