期刊论文

中文

核化学与放射化学

0253-9950

2022

44

2

127-140

10.7538/hhx.2022.YX.2021055

本校为第一机构

本工作从基于2,6-二氯异烟酸(H-2,6-dcpca)和2,2′-联吡啶(2,2′-bpy)混合配体的卤代异烟酸铀酰配合物((UO2)(2,6-dcpca)2 (2,2′-bpy))出发,通过进一步引入第二金属中心(Ag~+、Zn~(2+)和Cu~(2+))进行竞争配位,实现了对这一混合配体型氯代异烟酸铀酰配合物的结构调控,并成功合成了六种新型混合配体型异质金属铀酰配合物。单晶结构分析表明,这些异质金属节点具有不同的配位行为,可以参与2,2′-bpy和[2,6-dcpca]-配体的竞争配位并改变铀酰中心的配位环境,导致最终形成的水热产物具有不同铀酰配位模式和化学结构。同时,由于晶体结构的不同,这些化合物在超分子晶格中的弱相互作用和晶格堆积方式也表...

In this work, second metal centers are introduced to regulate the coordination behavior of uranyl center in mixed-ligand uranyl compounds with halogen-substituted dichloroisonicotinic acid(H-2, 6-dcpca) and 2, 2'-bipyridine(2, 2'-bpy). Through a strategy of diversified competitive coordination via a second metal center(Ag+, Zn2+ and Cu2+), the coordination environment of mixed-ligand uranyl complex was tuned, and six heterometallic uranyl compounds with different second ions, Ag+, Zn2+ or Cu2+, were successfully acquired by hydrothermal synthes...