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室温离子液体EMIGaCl4和GaCl3混合物体积性质的研究
Studies on Mixture of Ionic Liquid EMIGaCl4 and GaCl3
【摘要】 用GaCl3 和EMIC混合制成室温离子液体EMIGaCl4,测定了它的Raman光谱,利用基集 6—31G*的Harfree-Fock量子化学从头算估算了GaCl-4 ,Ga2Cl-7 ,GaCl3 的结构、键长、Raman频率和能量,并用密度法测定了不同温度下以室温离子液体EMIGaCl4 为溶剂GaCl3 的表观摩尔体积和热膨胀系数,讨论了离子间相互作用,指出了在GaCl3 /EMIC体系中,当GaCl3过量时,可能发生GaCl3 +GaCl-4 →Ga2Cl7-反应.Raman光谱和量子化学从头算也进一步证实了这个看法.
【Abstract】 The densities of mixture of ionic liquid compound EMIGaCl4 and its mixtures with EMIC were measured by pycnometry in the temperature range from 308.15 K to 343.15 K. The values of apparent molar volume of the mixture of EMIC were determined. Both Raman scattering and ab initio calculations were performed. All results show that GaCl-4 is sole anion in ionic liquid compound EMIGaCl4 and the reaction GaCl-4+GaCl3→Ga2Cl-7 may occur in the mixture composed of GaCl3 and ionic liquid compound EMIGaCl4.
【Key words】 room temperature ionic liquid; gallium chloride; density; apparent molar volume; ab initio calculation; Raman scattering.;
- 【文献出处】 辽宁大学学报(自然科学版) ,