Redox Potentials and HPLC Behavior of Cobalt and Iron Complexes with Pyridylazo Compounds
Analytical Sciences 24 巻 12 号
1575-1580 頁
2008-12 発行
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種類 :
全文
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タイトル ( eng ) |
Redox Potentials and HPLC Behavior of Cobalt and Iron Complexes with Pyridylazo Compounds
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作成者 |
Yasui Takashi
Ohnishi Takashi
Yamaguchi Masayo
Tamamura Saki
Yamada Hiromichi
Yuchi Akio
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収録物名 |
Analytical Sciences
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巻 | 24 |
号 | 12 |
開始ページ | 1575 |
終了ページ | 1580 |
抄録 |
The redox potentials of cobalt and iron complexes with ten pyridylazo compounds, E0ML2 (ML2+/0; M: CoIII/II, FeIII/II; L-: pyridylazo compounds), have been determined in order to explore the difference in their reversed-phase HPLC behavior. The redox potentials of Co complexes were in the range of -0.62 - 0.03 V, while those of Fe complexes were -0.06 - 0.59 V relative to 0.20 V for ferricinium/ferrocene. The redox potentials of both the Co and Fe complexes were linearly correlated to the basicities of the ligands. The correlation was quantitatively explained by a difference in dependence of the stabilities of MIII and MII complexes on the ligand basicities. The complex of [CoIIIL2]+ or [FeIIL2] with any compound injected in the reversed-phase HPLC system was detected without any change in the composition. When [CoIIL2] was injected, only those complexes having the highest potentials of E0CoL2 ≅ 0.0 V were detected as [CoIIL2], while other complexes having lower potentials gave a peak of [CoIIIL2]+. When [FeIIIL2]+ was injected, only complexes having the lowest potentials of E0FeL2 ≅ 0.0 V were detected as [FeIIIL2]+, while others having higher potentials gave a peak of [FeIIL2].
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NDC分類 |
化学 [ 430 ]
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言語 |
英語
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資源タイプ | 学術雑誌論文 |
出版者 |
The Japan Society for Analytical Chemistry
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発行日 | 2008-12 |
権利情報 |
2008 © The Japan Society for Analytical Chemistry
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出版タイプ | Version of Record(出版社版。早期公開を含む) |
アクセス権 | オープンアクセス |
収録物識別子 |
[ISSN] 0910-6340
[ISSN] 1348-2246
[NCID] AA10500785
[DOI] 10.2116/analsci.24.1575
[DOI] https://doi.org/10.2116/analsci.24.1575
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