戊二酰双(苯并-15-冠-5)与水合稀土苦味酸盐超分子配合物的合成与表征

Synthesis and Characterization of the Supramolecular Coordination Compounds of Pentandioyl-bis(benzo-15-crown-5) with Hydrated Lanthanide Picrates

在氯仿和甲醇的混合溶剂中合成了十三种戊二酰双 (苯并 - 1 5-冠 - 5)与水合稀土苦味酸盐所形成的超分子配合物 ,经元素分析确定其组成为 Ln( Pic) 3· L· x H2 O( Ln=L a,x=5;Ln=Pr、Nd、Sm、Eu、Gd、Tb、Dy、Y,x=7;L n=Ho、Er、Tm、Yb,x=6;L=戊二酰双 (苯并 - 1 5-冠 - 5) )。并进行了红外光谱、紫外光谱、差热 -热重和摩尔电导等性质研究 ,对标题双冠醚与水合稀土苦味酸盐的结合方式进行了探讨。

Thirteen kinds of the supramolecular coordination compounds of pentandioyl bis(benzo 15 crown 5) (L) with hydrated lanthanide picrates have been synthesized in a 1∶1 (v/v) mixed solvent of CH 3OH and CHCl 3.According to elemental analysis,the stoichiometric formula of these supramolecular coordination compounds are Ln(Pic) 3·L·xH 2O(Ln=La,x=5;Ln=Pr,Nd,Sm,Eu,Gd,Td,Dy,Y,x=7;Ln=Ho,Er,Tm,Yb,x=6;Pic=picrate anion).These supramolecular coordination compounds have been characterized by IR、UV visible spectra,DTG TA and molar conductance.The coordination behaviour and the coordination pattern of title biscrown ethers with hydrated lanthanide picrates have been studied.All the coordination compounds are non electrolytes in acetonitrile.