Characterization of Metal Ions in Coordinating Solvent Mixtures by Means of Raman Spectroscopy
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- ISHIGURO Shin-ichi
- Department of Chemistry, Faculty of Science, Kyushu University
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- UMEBAYASHI Yasuhiro
- Department of Chemistry, Faculty of Science, Kyushu University
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- KANZAKI Ryo
- Department of Chemistry, Faculty of Science, Kyushu University
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Titration Raman spectroscopy has been developed for studying the solvation structure of metal ions in solution. The method affords us the solvation number, and the value thus obtained in neat solvents is in good agreement with that determined by EXAFS. The method is then applied to solvent mixtures, and the individual solvation number for each solvent is extracted. In a solvent mixture of N,N-dimethylformamide (DMF) and N,N,N′,N′-tetramethylurea (TMU), the metal ion prefers DMF to TMU, which is ascribed to the solvation steric effect. The same applies also for the solvent mixture of N,N-dimethylpropionamide (DMPA) and DMF. However, unlike TMU, DMPA changes its conformation from the planar cis to non-planar staggered upon solvation to the metal ion. The enthalpy for the conformational change of DMPA is positive in the bulk, while it is significantly negative in the coordination sphere of the manganese(II) ion. Here, we briefly describe the procedure of measurements and analyses for the titration Raman spectroscopy, and review the solvation structure of the alkaline earth, first transition metal(II) and lanthanide(III) ions in some solvent mixtures in view of solvation steric effect.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 20 (3), 415-421, 2004
社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204255283072
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- NII論文ID
- 130004440908
- 10012721399
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- NII書誌ID
- AA10500785
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- COI
- 1:CAS:528:DC%2BD2cXisFGqsrk%3D
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- ISSN
- 13482246
- 09106340
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- NDL書誌ID
- 6883640
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- PubMed
- 15068281
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可