Some Observations about the Diffusion Coefficients of Anionic Transition Metal Halide Complexes in Room‐Temperature Haloaluminate Ionic Liquids
Some Observations about the Diffusion Coefficients of Anionic Transition Metal Halide Complexes in Room‐Temperature Haloaluminate Ionic Liquids
复制标题
阴离子过渡金属卤化物配合物在室温卤铝酸盐离子液体中扩散系数的一些观察
DOI：
10.1149/1.2086978
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发表时间：
1990
影响因子：
3.9
通讯作者：
P. Barnard
中科院分区：
文献类型：
--
作者：
C. Hussey;I. Sun;Sandra K. D. Strubinger;P. Barnard
Stokes-Einstein产品来自碱性氯化铝-1-甲基-3-乙基咪唑鎓氯化物室温离子液体及其溴化物类似物中单体和聚合阴离子过渡金属卤化物络合物的电化学数据，显示出随络合物离子上的总电荷逐步变化。这些观察结果在熔融阳离子和阴离子络合物之间的离子-离子相互作用方面得到了调和，这导致扩散实体具有比预期更大的溶剂动力学半径。随着过渡金属络合物上的电荷变得更负，缔合阳离子的数量似乎增加。
Stokes‐Einstein products that were derived from electrochemical data for monomeric and polymeric anionic transition metal halide complexes in the basic aluminum chloride‐1‐methyl‐3‐ethylimidazolium chloride room‐temperature ionic liquid and its bromide analog are shown to vary stepwise with the overall charge on the complex ion. These observations are reconciled in terms of ion‐ion interactions between the melt cations and the anionic complexes which lead to diffusing entities with larger solvodynamic radii than expected. The number of associated cations appears to increase as the charge on the transition metal complex becomes more negative.