芳氧功能化咪唑基五氯化铕[HO-4,6-di-tBu-C6H2-2-CH2{CH（NCHCHNiPr）}]2+[EuCl5（THF）]2-的合成与结构

芳氧功能化咪唑盐L+Cl-(L=HO-4,6-di-tBu-C6H2-2-CH2{CHiPrNCHCHN]})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+2EuCl5(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。

Synthesis and crystal structure of [ HO-4,6-di-tBu-C6H2-2-CH2 {CH(NCHCHNiPr) } ]2+[ EuCl5 (THF) ]2-

The reaction of phenoxo-functionalised imidazolium L+Cl-(L=HO-4,6-di-tBu-C6H2-2-CH{CH(iPr2NCHCHN)}])with anhydrous EuCl3 in a 2∶1 and 3∶1 molar ratio in THF gives the same complex L2+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 monoclinic,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)nm3,Mr =1060.30,Z=4,Dc =1.221 Mg/m3,μ(MoKα)=1.36 mm-1,F(000)=2200.The title complex is composed of an anionEuCl5(THF)]2-and two cationsHO-4,6-di-tBu-C6H2-2-CH2{CH(iPrNCHCHN)}]2+ to form an web structure by the interconnection of anions and cations via hydrogen-bonding.The central metal Eu in the anionic unit coordinated to five Clatoms and one oxygen atom from solvated THF molecule to form a six-coordinated distorted octahedron geometry.