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

Kotoe Sasaki, Tomoya Suzuki, Tsuyoshi Arai, Koichiro Takao, Shinichi Suzuki, Tsuyoshi Yaita, Yasuhisa Ikeda

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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-ethyl-3-methylimidazolium) 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 spectrophotometric evidence for formation of [UO2(NO3)4]2 in IL.

Original languageEnglish
Pages (from-to)670-672
Number of pages3
JournalChemistry Letters
Issue number5
Publication statusPublished - 2014


ASJC Scopus subject areas

  • Chemistry(all)

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