N,N′-二吡啶基-3-亚甲基-1,2-乙二胺-稀土硝酸盐配合物的合成与表征  

Synthesis and Characterization of Complexes of Rare Earth Nitrates with N, N′-Bis(3-pyridylmethyl)-1,2-ethylenediamine

作　　者：钟劲茅[1] 张正华[2] 毕明亮[1] 饶静[1] 孙为银[1] 

机构地区：[1]南昌航空工业学院环境与化学工程系,江西南昌330034 [2]南京大学配位化学研究所配位化学国家重点实验室,江苏南京210093

出　　处：《中国稀土学报》2005年第2期250-252,共3页Journal of the Chinese Society of Rare Earths

基　　金：江西省材料科学与工程研究中心开放基金资助项目(ZX200301015)

摘　　要：在乙腈溶液中合成了N,N′二吡啶基3 亚甲基1,2 乙二胺(L)的稀土硝酸盐系列配合物。利用元素分析、红外光谱和差热-热重分析等手段对所合成的配合物进行了表征,结果表明合成的配合物都符合稀土金属离子与配体为1∶1的化学计量比,其组成可表示为[RE(NO3)3L]·nH2O[RE=La(Ⅲ),Nd(Ⅲ),Eu(Ⅲ),Tb(Ⅲ),Er(Ⅲ),n=2.5,1.5,1]。另外,初步研究了其中Eu(Ⅲ)和Tb(Ⅲ)配合物在室温固体状态下的荧光性质,结果显示这两个配合物表现出相应的Eu(Ⅲ)和Tb(Ⅲ)离子的特征发射。Rare earth metal complexes have attracted great attention due to their special physical and chemical properties. In this paper, a series of complexes of rare earth nitrates with N,N′-bis(3-pyridylmethyl)-1,2-ethylenediamine ligand (L) were synthesized from the acetonitrile solution. The obtained new complexes were characterized by elemental analysis, IR spectroscopy and thermogravimetric analysis. The results show that all the complexes have 1∶1 molar ratio of metal salt to ligand with general formula of [RE(NO_3)_3L]·nH_2O [RE=La(Ⅲ), Nd(Ⅲ), Eu(Ⅲ), Tb(Ⅲ), Er(Ⅲ), n= 2.5, 1.5, 1]. The luminescent properties of Eu(Ⅲ) and Tb(Ⅲ) complexes were also studied at room temperature in the solid state and it is found that the Eu(Ⅲ) and Tb(Ⅲ) complexes show characteristic emissions of Eu(Ⅲ) and Tb(Ⅲ) ions, respectively.

关 键 词：合成 表征 配合物 荧光性质 稀土 

分 类 号：O614.4[理学—无机化学] O614.33[理学—化学]