Uranyl Species in 1-Ethyl-3-methylimidazolium Nitrate ([EMI][NO3]) Solution of [EMI](2)[UO2(NO3)(4)]: First Spectrophotometric Evidence for Existence of [UO2(NO3)(4)](2-)

作者：Sasaki Kotoe; Suzuki Tomoya; Arai Tsuyoshi; Takao Koichiro; Suzuki Shinichi; Yaita Tsuyoshi; Ikeda Yasuhisa^*

来源：Chemistry Letters, 2014, 43(5): 670-672.

DOI：10.1246/cl.131183

In order to examine chemical forms of uranyl species in nitrate-based ionic liquid (IL), we have performed spectrophotometric experiments for [EMI][NO3] (EMI: 1-ethy1-3-methyl-imidazolium) and CH3CN solution of [EMI](2)[UO2(NO3)(4)]. As a result, it was found that in CH3CN solution uranyl species exist as [UO2(NO3)(3)]-, that with an increase in [NO3]- the [UO2(NO3)(4)](2-) species is formed, and that uranyl species in neat [EMI][NO3] exist as [UO2(NO3)(4)](2-). This is the first spectro-photometric evidence for formation of [UO2(NO3)(4)](2-) in IL.

• 出版日期2014-5-5