摘要
氯化钆与对-甲基苯基锂在四氢呋喃中反应得到产物之一为[Li(THF)_4][GdCl_4-(THF)_2],(M_r=738.2),在-70℃下进行X-射线衍射研究。其晶体属单斜晶系,P2/n空间群。晶体学参数为a=13.263(2),b=8.474(1),c=14.961(0);β=99.72(1)°,V=1657.23(?)~3,Z=2,D_c=1.48g/cm^3,F(000)=750,μ_c=24.2cm^(-1),最终偏离子为R=0.0614。研究结果表明,本题晶体是离子型晶体,围绕Gd^(3+)的四个Cl^-离子和两个THF分子的氧原子构成畸变的八面体。Li^+周围的四个THF分子的氧原子构成一个近似的四面体。
Anhydrous GdCl3 reacts with CH3- -Li in tetrahydrofuran(THF) to give one of the products [Li(THF)4][GdCl4(THF)2]. It crystallizes at -15? in monoclinic space group P2/n with unit cell parameters a = 13. 263(2), b = 8.474(1), c= 14. 961(0)(?) ,β=99. 72(1)°, V = 1657. 23(?)3, Z = 2. The final R value is 0.0614. In [Li(THF)4][GdCl4(THF)2] , the coordination number of Gd(Ⅲ) is 6 and that of Li(Ⅰ) is 4. The compound is sensitive to air and moisture.
基金
稀土化学与物理开放实验室资助项目
