| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
Substituent-effects on the spin crossover (SCO) property in the Fe(II)-qsal system have been thoroughly investigated. The complex with carboxylic acid [Fe(qsal-5c)2] show SCO phenomenon at 150 K with hysteresis of 21 K due to the 2-d hydrogen-bond network, while [Fe(qsal-4c)2] with it at different position and [Fe(qsal-nOH)2] (n = 3, 4, 5) with a hydroxyl group show no SCO phenomenon. Qnal-series having naphthalene moiety with different substituent positions, qnal-21, qnal-12, and qnal-32 were also investigated and only [Fe(qnal-21)2] shows SCO phenomenon. Single crystal X-ray analyses revealed that the pi-pi interaction is important factor to maintain the planarity of ligands, which strongly affects the ligand-field strength.
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