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Synthesis, Crystal Structures and Magnetic Properties of Composites Incorporating an Fe(II) Spin Crossover Complex and Polyoxometalates
http://hdl.handle.net/2241/00148593
http://hdl.handle.net/2241/001485935ed69f7d-8689-4917-bb81-f16850b00af6
名前 / ファイル | ライセンス | アクション |
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Inorganics_5-3 (933.4 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2017-10-30 | |||||
タイトル | ||||||
タイトル | Synthesis, Crystal Structures and Magnetic Properties of Composites Incorporating an Fe(II) Spin Crossover Complex and Polyoxometalates | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Kuramochi, Satoshi
× Kuramochi, Satoshi× Shiga, Takuya× Cameron, Jamie× Newton, Graham× Oshio, Hiroki |
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著者別名 |
志賀, 拓也
× 志賀, 拓也× 大塩, 寛紀 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | [Fe(dppOH)2]2+ (dppOH = 2,6-di(pyrazol-1-yl)-4-(hydroxymethyl)pyridine) is known to show spin crossover (SCO) behavior and light-induced excited spin state transitions (LIESST). Here, we show that the SCO properties of the [Fe(dppOH)2]2+ complex can be altered by a crystal engineering approach employing counter anion exchange with polyoxometalate (POM) anions. Using this strategy, two new composite materials (TBA)[Fe(dppOH)2][PMo12O40] (1) and [Fe(dppOH)2]3[PMo12O40]2 (2) (TBA = tetra-n-butylammonium) have been isolated and studied by single crystal X-ray diffraction and magnetic susceptibility measurements. 1 was found to be in a high spin state at 300 K and showed no spin crossover behavior due to a dense packing structure induced by hydrogen bonding between the hydroxyl group of the dppOH ligands and the POM anions. Conversely, 2 contains two crystallographically unique Fe centers, where one is in the low spin state whilst the other is locked in a high spin state in a manner analogous to 1. As a result, 2 was found to show partial spin crossover behavior around 230 K with a decrease in the χmT value of 1.9 emu·mol−1·K. This simple approach could therefore provide a useful method to aid in the design of next generation spin crossover materials. | |||||
書誌情報 |
Inorganics 巻 5, 号 3, p. 48, 発行日 2017-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2304-6740 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.3390/inorganics5030048 | |||||
権利 | ||||||
権利情報 | ©2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | MDPI |