稀土与1,4,7,10-四氧杂-13-氮杂-5∶6-苯并-十五烷-N-乙酸配合物的合成与表征

Preparation and Characterization of Rare Earth(Ⅲ) Isothiocyanate Complexes with Nacetic Acid Substituted Benzo Aza Crown Ether

以邻苯二酚、２－氯乙醇、二乙醇胺和溴乙酸为原料，合成了一个新的配体——Ｎ－乙酸取代苯并氮杂冠醚。在无水乙醇中经置换反应，制得了九种稀土硫氰酸盐冠醚固体配合物，经元素分析确定其组成为ＲＥ（ＳＣＮ）２·Ｌ·２Ｈ２Ｏ（ＲＥ＝Ｌａ，Ｐｒ，Ｎｄ，Ｓｍ，Ｅｕ，Ｇｄ，Ｅｒ，Ｙ；Ｌ＝Ｎ－乙酸取代苯并氮杂冠醚）。用ＩＲ、ＵＶ－Ｖｉｓ和电导测定等方法，研究了配合物的配位结构和性质。

With the starting materials catechol,2chloroethanol,diethanolamine and bromoacetic acid,a new ligand Nacetic acid substituted benzo aza crown ether,i.e.,1,4,7,10tetraoxy13aza5∶6benzocyclopentadecaneNacetic acid,has been prepared.Nine new rare earth(Ⅲ)isothiocyanate complexes with the ligand have been prepared through a displacement reaction in ethanol.Elemental analysis shows that they have a common chemical formula,RE(SCN)2·L·2H2O(RE=La,Pr,Nd,Sm,Eu,Gd,Dy,Er,Y).Their properties have been studied with UV,IR absorption spectroscopies and conductometry.Their coordination structures are also proposed.