A diethylene glycerol bridged bis - imidazolium hexafluorophosphate ionic liquid( CCDC No. 1469455),is synthesized and its structure is characterized by IR,NMR and single - crystal x - ray diffraction. It crystallizes in triclinic,space group P1 with a = 0. 9034 nm,b = 0. 9167 nm,c = 1. 2554 nm,α = 84. 648°,β =83. 2189°,γ = 82. 807°,unit - cell volume N = 1. 0210 nm3 ,Z = 2,Dc = 1. 712 g / cm3 ,μ = 0. 333 mm - 1 ,F (000)= 532,R = 0. 416 and wR(I ﹥ 2σ(I)) = 0. 0937. The results of x - ray crystal diffraction proves that two imidazolium rings in the crystal structure are planar and very stable,and have average electron density. PF -6 anion is very close to imidazolium cation because of electrostatic force. In this crystal,the strong hydrogen bond-ing interactions in C - H - F,N - H…F,C - H…O have effect on the packing structure.%利用二甘醇和1-甲基咪唑为原料经过一系列反应，合成了一种双离子液体二甘醇桥连双咪唑六氟磷酸盐（CCDC No.1469455），并通过红外光谱，核磁共振谱和 x -射线单晶衍射对其结构进行了表征. x -射线单晶衍射测试结果表明化合物为三斜晶系，空间群 P1，a =0.9034 nm，b =0.9167 nm，c =1.2554 nm，α=84.648°，β=83.2189°，γ=82.807°，N =1.0210 nm3，Z =2，Dc =1.712 g/ cm3，μ=0.333 mm -1，F（000）=532，R =0.416，wR（I ﹥2σ（I））=0.0937.晶体结构中咪唑阳离子环为平面结构，电子云密度平均化，结构非常稳定.由于阴阳离子之间的静电引力作用，阴离子 PF -6靠近咪唑环.在该晶体结构中，N - H…F，C - H…F 和 C - H…O 的氢键作用对堆积结构的形成影响很大.
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