Uranium halide complexes in ionic liquids: an electrochemical and structural study.
Uranium halide complexes in ionic liquids: an electrochemical and structural study.
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DOI：
10.1039/b512212k
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发表时间：
2006-05
影响因子：
4
通讯作者：
Maggel Deetlefs;C. Hussey;T. Mohammed;K. R. Seddon;J. van den Berg;J. A. Zora
中科院分区：
文献类型：
--
作者：
Maggel Deetlefs;C. Hussey;T. Mohammed;K. R. Seddon;J. van den Berg;J. A. Zora
研究了[emim]2[UBr 6]和[emim]2[UO 2Br 4]（[emim] = 1-乙基-3-甲基咪唑盐）在碱性和酸性溴铝酸盐（III）离子液体中的电化学行为。在碱性离子液体中，六溴盐在固定的玻碳圆盘电极上经历单电子可逆还原过程，而四溴二氧代盐通过不可逆的双电子过程还原为铀（IV）物种，同时将氧化物转移到离子液体中。另一方面，在酸性溴铝酸盐（III）离子液体中的任一种盐的溶解导致形成相同的电活性物质。氯化铀盐[emim]2[UCl 6]和[emim]2[UO 2Cl 4]的固态结构以前曾被报道过，但现在已经使用我们小组开发的新的统计模型进行了重新评估，以确定结晶状态下是否存在弱氢键相互作用。
The electrochemistry of the salts, [emim]2[UBr6] and [emim]2[UO2Br4] ([emim] = 1-ethyl-3-methylimidazolium), has been investigated in both a basic and an acidic bromoaluminate(III) ionic liquid. In the basic ionic liquid, the hexabromo salt undergoes a one-electron reversible reduction process at a stationary glassy carbon disc electrode, while the tetrabromodioxo salt was reduced to a uranium(IV) species by an irreversible two-electron process with the simultaneous transfer of oxide to the ionic liquid. On the other hand, dissolution of either of the salts in an acidic bromoaluminate(III) ionic liquid resulted in the formation of the same electroactive species. The solid state structures of the uranium chloride salts, [emim]2[UCl6] and [emim]2[UO2Cl4], have previously been reported, but have now been re-evaluated using a new statistical model developed in our group, to determine the presence or absence of weak hydrogen bonding interactions in the crystalline state.