二甲基取代五元瓜环与钾离子和钆离子的配位结构

摘要

Two dimethyl-substituted cucurbit[5]uril (DMeQ[5]) complexes with heterometallic potassium/gadolinium metal ions and with potassium ions only were structurally characterized by single-crystal X-ray diffractions.They are {[K2 (H2O)3DMeQ [5]}I2·5H2O (1) and {[Gd(H2O)3][K(H2O)][(NO3)@DMeQ[5]]}(NO3)3· 5H2O (2).Compared to the complex of DMeQ[5] with gadolinium metal ions only,both opening portals of DMeQ[5] are fully capped by potassium cations or potassium and gadolinium cation ions in these two DMeQ[5]-based complexes.CCDC:821247,1; 821248,2.%利用X-射线单晶衍射技术表征了2个二甲基取代五元瓜环(DMeQ[5])与金属离子形成的配合物的晶体结构,2个配合物分别为{[K2(H2O)3DMeQ[5]}I2·5H2O(1)和{[Gd(H2O)3][K(H2O)][(NO3)@DMeQ[5]]}(NO3)3·5H2O(2).与DMeQ[5]和钆离子形成的配合物的结构不同的是,配合物1和2中每个DMeQ[5]端口的所有羰基氧原子都和钾离子或钆离子配位,形成全封闭结构.