Charge-Transfer Phase Transition of a Cyanide-Bridged FeII/FeIII Coordination Polymer

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• 作者：Dr. Kuirun Zhang ; Dr. Soonchul Kang ; Dr. Zi-shuo Yao ; Kazusa Nakamura ; Dr. Takashi Yamamoto ; Prof. Dr. Yasuaki Einaga ; Nobuaki Azuma ; Dr. Yuji Miyazaki ; Prof. Dr. Motohiro Nakano ; Dr. Shinji Kanegawa and Prof. Dr. Osamu Sato
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：May 10, 2016
• 年：2016
• 卷：128
• 期：20
• 页码：6151-6154
• 全文大小：1325K
• ISSN：1521-3757

文摘

Heterometallic Prussian blue analogues are known to exhibit thermally induced charge transfer, resulting in switching of optical and magnetic properties. However, charge-transfer phase transitions have not been reported for the simplest FeFe cyanide-bridged systems. A mixed-valence Fe^II/Fe^III cyanide-bridged coordination polymer, {[Fe(Tp)(CN)₃]₂Fe(bpe)⋅5 H₂O}_n, which demonstrates a thermally induced charge-transfer phase transition, is described. As a result of the charge transfer during this phase transition, the high-spin state of the whole system does not change to a low-spin state. This result is in contrast to FeCo cyanide-bridged systems that exhibit charge-transfer-induced spin transitions.