Charge‐Transfer Phase Transition of a Cyanide‐Bridged FeII/FeIII Coordination Polymer. (8th April 2016)

• Record Type: Journal Article
• Authors: Zhang, Kuirun; Kang, Soonchul; Yao, Zi‐shuo; Nakamura, Kazusa; Yamamoto, Takashi; Einaga, Yasuaki; Azuma, Nobuaki; Miyazaki, Yuji; Nakano, Motohiro; Kanegawa, Shinji; Sato, Osamu
• Is Part Of: Angewandte Chemie. Volume 128:Number 20(2016)
• Page Start: 6151
• Page End: 6154
• Publication Date: 2016-04-08
• Subjects: Cyanidkomplexe -- Eisen -- Gemischtvalente Verbindungen -- Ladungstransfer -- Phasenübergänge; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201601526
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: 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 H2 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. Abstract : Mit Preußischblau (Fe III 4 [Fe II (CN)6 ]3 ⋅ x H2 O) als Vorbild wurde ein simpler cyanidverbrückter Fe II /Fe III ‐Komplex entworfen, dessen optische und magnetische Eigenschaften durch Metall‐Metall‐Ladungstransfer‐Phasenübergänge geschaltet werden können.