摘要
在醋酸钠存在下.三价稀土氯化物与1,1′—二(三氟甲酰丙酮基)二茂铁(H_2L)反应得到螯合物(HL)_3 M·_xH_2O.当 M=Y,La,Tb,Nd 和 Ce 时 x=3;当 M=Pr,Sm,Eu,Gd,Dy,Ho,Er,Tm,Yb 和 Lu 时 x=5.由元素分析及 IR 光谱确定了螯合物的组成.UV 光谱在285,333.5和489nm 处有三个吸收带.TGA 和 DSC 表明螯合物在75～200℃之间失水,在285℃左右开始放热分解.文中做了(HL)_3 M·_xH_2O(M=La,Eu 和 Lu)的 HNMR 谱,对(HL)_3Eu 作为化学位移试剂进行了尝试.
In the presence of sodiun acetate,trivalent lanthanide chloride and1,'1-di(trifluoroacetoacetyl)ferrocene(H_2L)react to give chelates(HL)_3M·xH_2O,where x=3 when M=Y,La,Tb,Nd,Ce and x=5 whenM=Pr,Sm,Eu,Gd,Dy,Ho,Er,Tm,Yb,Lu.The composition andstructure of the chelates have been characterized by element analysis andIR spectra.UV spectra show three bands,285,333.5 and 480nm.TGAand DSC indicate that the chelates lose water between 75°-200℃.Thechelates begin to decompose exothermically at about 285℃.The'HNMRspectra of(HL)_3M·xH_2O(M=La,Eu and Lu)were determined.The(HL)Eu used as a chemical shift reagent,was also attempted.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第1期98-102,共5页
Journal of Lanzhou University(Natural Sciences)
