Synthesis and reactivity of novel high-valent iron-oxo complexes
| Project/Area Number |
26620038
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic chemistry
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 触媒・化学プロセス / 鉄錯体 / 構造と性質 / 酸化反応 |
|---|
| Outline of Final Research Achievements |
A macrocyclic tetraamide ligand (H4DTTM) was synthesized through a template reaction using a Ni(II) complex. An intermediate-spin Fe(III) complex with DTTM(4-) as a ligand, (NEt4)2[Fe(III)(DTTM)Cl] (1), was prepared and characterized by X-ray analysis and spectroscopic methods. Complex 1 showed 2-step reversible redox processes in CH3CN. The redox processes were monitored by absorption spectroscopy to observe different isosbestic points for the two steps. We also succeeded in the isolation and crystal structure determination of the 1-electron- and 2-electron-oxidized species, which were obtained by chemical oxidation reactions of 1. The 1-electron-oxidized species was revealed to be in the S = 1 spin state and the 2-electron-oxidized one exhibited temperature-dependent valence tautomerization.
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Report
(3 results)
Research Products
(81 results)
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[Journal Article] Homogeneous Photocatalytic Water Oxidation with a Dinuclear CoIII-Pyridylmethyl amine Complex2016
Author(s)
T. Ishizuka, A. Watanabe, H. Kotani, D. Hong, K. Satonaka, T. Wada, Y. Shiota, K. Yoshizawa, K. Ohara, K. Yamaguchi, S. Kato, S. Fukuzumi, T. Kojima
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Journal Title
Inorganic Chemistry
Volume: 55
Issue: 3
Pages: 1154-1164
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] A Series of Ring-Fused Porphyrins2014
Author(s)
Tomoya Ishizuka, Yuta Saegusa, Takahiko Kojima
Organizer
International Symposium on the Syntehsis and Application of Curved Organic π-Molecules and Materials(CURO-π)
Place of Presentation
京都大学黄檗プラザ（京都府）
Year and Date
2014-10-20
Related Report
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[Presentation] A Series of Ring-Fused Porphyrins2014
Author(s)
Tomoya Ishizuka, Yuta Saegusa, Takahiko Kojima
Organizer
Eighth International Conference on Porphyrins and Phthalocyanines (ICPP-8)
Place of Presentation
Istanbul Luetfi Kirdar Convention and Exhibition Centre (Istanbul, Turkey)
Year and Date
2014-06-24
Related Report
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