摘要
在乙醇-水溶液中,当pH=5-6时,用希土硝酸盐与BPMPBD反应,合成了15种希土元素(除Sc、Pm外)的二元配合物.通过化学分析和元素分析确定了配合物的组成为REL_2·nH_2O(RE=La,n=5,RE=Y,n=4,RE=Pr、Nd、Sm、Eu、Gd,n=3),RE_2L_3·5H_2O(RE=Tb、Dy、Ho、Er、Tm、Yb、Lu)及CeL_2·4H_2O.研究了这些配合物的一些性质及红外光谱、紫外光谱、核磁共振、荧光光谱和差热分析,认为重希土配合物具有双核结构。
This paper reported that fifteen complexes of rare earth (except Sc,Pm) have been
synthesized by the reaction of rare earth nitrates with l,4-bis-(l'-phenyl-3'
-methyl-5'-pyrazolone-4')-1,4-butanedione in ethanol aqueous solution at pH = 5-6.
According to chemical analysis and elemental analysis, the composition of complexes are RE(C24H22N4O4)2 · nH2O (RE = Y,n=4. RE = La, n=5. RE = Pr, Nd, Sm, Gd, n=3), RE2(C24H22N4O4)3 · nH2O (RE = Tb, Dy, Er, Tm, Yb, Lu, n= 5), Ce(C24H22N4O4)2 · 4H2O. The structure and properties of these complexes were studied by chemical analysis, infrared, ultraviolet, proton magnetic resonance, fluorescence spectrum and thermogravimetric analysis. On the basis of all above investigation, it can be thought that the weight rare earth complexes are binuclear structure.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1991年第2期169-174,共6页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目
