摘要
采用相同条件的液相层置法将Zn^(2+)、Cd^(2+)的硫酸盐与配体N-(1-亚甲基-4-吡啶基)-1,4-苯二胺((E)-N1-(pyridin-4-ylmethylene)benzene-1,4-diamine,pbda))反应,形成配合物[Zn2(pbda)2(H2O)8]·2SO4(1),[Cd(pbda)_2(H_2O)_2(SO_4)]_n(2),通过红外光谱、X射线单晶衍射对其组成和结构进行了表征,然后测试了单体和配合物的荧光性质.晶体结构的分析结果表明:配合物的结构由金属离子的半径调控;尽管Cd2+的离子半径显著大于Zn2+,但其合成的配合物的中心金属离子的配位数均为6,而配位方式和结构却完全不同;半径较大的金属离子更倾向于形成较高维数的结构;两者结构的不同导致其荧光性质存在着显著的差异.
Two complexes,[Zn_2(pbda)_2(H_2O)_8]·2 SO_4(1)and[Cd(pbda)_2(H_2O)_2(SO_4)]n(2)(pbda=(E)-N1-(pyridin-4-ylmethylene)benzene-1,4-diamine)were synthesized using layer diffusion under the same condition.The complexes were characterized using IR spectra and X-ray single crystal diffraction and showed completely different fluorescent properties.Crystal structure analysis reveals that the structures of the complexes are controlled by the radii of the metal ions.Although Cd2+ion is significantly larger than Zn2+ion,both of the coordination numbers of metal centers in these complexes are 6,and the coordination modes and structures are completely different.The metal ion with larger radius tends to form higher dimensional structure.Different coordinated structures lead to different fluorescent emissions.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第6期791-798,共8页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金(21071117,21471125)
国家基础科学人才培养基金(J1310024)
