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Charge‐Transfer Phase Transition of a Cyanide‐Bridged Fe II /Fe III Coordination Polymer
Author(s) -
Zhang Kuirun,
Kang Soonchul,
Yao Zishuo,
Nakamura Kazusa,
Yamamoto Takashi,
Einaga Yasuaki,
Azuma Nobuaki,
Miyazaki Yuji,
Nakano Motohiro,
Kanegawa Shinji,
Sato Osamu
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201601526
Subject(s) - cyanide , prussian blue , valence (chemistry) , charge (physics) , phase transition , spin transition , phase (matter) , chemistry , polymer , crystallography , spin states , materials science , chemical physics , inorganic chemistry , condensed matter physics , electrochemistry , electrode , physics , organic chemistry , quantum mechanics
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 ] 2 Fe(bpe)⋅5 H 2 O} 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.