芳氧功能化咪唑基五氯化铕[HO-4,6-di-~tBu-C_6H_2-2-CH_2{CH(NCHCHN^iPr)}]_2^+[EuCl_5(THF)]^(2-)的合成与结构

Synthesis and crystal structure of [HO-4,6-di-~tBu-C_6H_2-2-CH_2{CH(NCHCHN^iPr)}]_2^+[EuCl_5(THF)]^(2-)

芳氧功能化咪唑盐L+Cl-(L=HO-4,6-di-tBu-C6H2-2-CH2{CH[iPrNCHCHN]})与无水EuCl3分别按照摩尔比为1∶2和1∶3反应成功合成相同芳氧功能化咪唑基五氯化铕L+2[EuCl5(THF)]2-,产物通过元素分析、IR、X-ray射线衍射表征。晶体结构数据表明此配合物属于单斜晶体,空间群P21/c,晶胞参数a=0.96664(8)nm,b=1.63312(12)nm,c=3.6850(3)nm,β=97.600(2)°,V=5.7662(8)nm3,Mr=1060.30,Z=4,Dc=1.221 Mg/m3,μ(MoKα)=1.36 mm-1,F(000)=2200。目标化合物是由阴离子[EuCl5(THF)]2-和[HO-4,6-di-tBu-C6H2-2-CH2{CH(iPrNCHCHN)}]2+通过氢键作用而形成的空间网状结构的晶体,阴离子中中心金属(Eu)是由五个氯原子以及来自THF的氧原子形成扭曲八面体的构型。

The reaction of phenoxo-functionalised imidazolium L^＋Cl^＋ （ L = [ HO-4,6-di-^1 Bu-C6 H2-2-CH { CH （^1 pr2 NCHCHN） } ] ） with anhydrous EuC13 in a 2 ： 1 and 3 ： 1 molar ratio in THF gives the same complex L2^＋ [ EuCls ] 2· THF. The complex has been characterized by IR spectrum, single-crystal X-ray diffraction. The data of the crystal structure indicates the complex belong to mon- oclinic, space group P21/c with a = 0. 96664 （ 8 ） nm, b = 1. 63312 （12） nm, c = 3. 6850 （ 3 ）nm ,β = 97. 600 （ 2 ）° V= 5. 7662 （ 8 ） nm^3, Mr = 1060. 30, Z = 4, Dc= 1. 221 Mg/m^3,/μ （MoKct） = 1.36 mm-1 , F （000） = 2200. The title complex is composed of an anion [ EuC15（THF） ]^2- and two cations[ HO-4,6-di-^1Bu-C6H2-2-CH2 {CH（IPrNCHCHN） } ] 2^＋ to form an web structure by the intercon- nection of anions and cations via hydrogen-bonding. The central metal Eu in the anionic unit coordinated to five Clatoms and one ox- ygen atom from solvated TI-IF molecule to form a six-coordinated distorted octahedron geometry.