| 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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| 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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