Iron(II) spin crossover complexes with branched long alkyl chain |
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| Authors: | Young Hoon LeeAsuka Ohta Yuki YamamotoYasuka Komatsu Kazuya KatoTetsuya Shimizu Hideaki ShinodaShinya Hayami |
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| Institution: | Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan |
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| Abstract: | The bzimpy iron(II) complexes, 1-3, containing branched long alkyl chains were synthesized and characterized in detail. The temperature-dependant magnetic susceptibility of 1 showed gradual spin crossover behavior from low spin to high spin state, while 2 retained only low spin state in the same condition. Interestingly, 3 displayed an abrupt spin transition in temperature range from T1/2↑ = 236 K to T1/2↓ = 230 K with the thermal hysteresis loop about 6 K. The differential scanning calorimetric analysis of 3 revealed two species of liquid crystal phase transitions at 236 K and 351 K, respectively. |
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| Keywords: | Spin crossover Iron(II) complex Long alkyl chain Liquid crystal |
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