Synthesis and structure characterization of bis- and mono(amidate) lanthanide (Ln = La, Gd) complexes and their application in the polymerization of ε-caprolactone
作者:Yu-Long Wang、Yan-Xu Zhou、Le-Qing Deng、Qing-Song Hu、Xian Tao、Ying-Zhong Shen
DOI:10.1016/j.jorganchem.2016.01.012
日期:2016.3
R′ = iPr; 10, R = Ph, R′ = iPr). Complexes 2, 5, 6, 7, 8a, 9 and 10 have been characterized by X-ray crystal structural analysis. The structures reveal that all these complexes are analogous binuclear via two bridging amidate ligands, built around a planar Ln2O2 ring. The catalytic properties of complexes 1, 2, 3, 5, 7, 9 and 10 on the ring-opening polymerization (ROP) of ε-caprolactone have been studied
一个严重的双-和单(amidae)镧系络合物1 - 10通过胺消去酰胺(R'(HNCO)R)被1个LN的当量[N(森达的制备3)2 ] 3(LN = LA:1,R = Ph,R'= t Bu;2,R = Ph,R'= i Pr;3,R = i Pr,R'= i Pr;4,R = i Pr,R'= t Bu),或0.5 M当量的Ln [N(SiMe 3)2 ] 3(Ln = La:5,R = t Bu,R'= t卜; 图6中,R = t Bu,R′= i Pr;7,R = 我PR,R'= 我镨; 8,R = 我PR,R'= 吨卜; Ln = Gd:9,R = i Pr,R'= i Pr;10,R =苯基,R'= 我PR)。复合物2,5,6,7,图8A,9和10X射线晶体结构分析已对其进行了表征。结构表明,所有这些络合物都是通过围绕平面Ln 2 O 2环构建的两个桥接的