2013 Fiscal Year Final Research Report
Developments of Functional Devices Using Iron Spin Crossover complexes With Large Cooperative Effects
| Project/Area Number |
23550167
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Functional materials chemistry
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| Research Institution | Kinki University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 電気・磁気的機能 / スピンクロスオーバー |
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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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