Water‐ and Temperature‐Triggered Reversible Structural Transformation of Tetranuclear Cobalt(II) Cores Sandwiched by Polyoxometalates |
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| Authors: | Yosuke Kuriyama Dr Yuji Kikukawa Dr Kosuke Suzuki Dr Kazuya Yamaguchi Prof?Dr Noritaka Mizuno |
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| Affiliation: | 1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo, Japan;2. Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan |
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| Abstract: | Although stimuli‐responsive structural transformations of inorganic materials have attracted considerable attention because of their potential use as functional switchable materials, multinuclear metal cores frequently suffer from unexpected dissociation of metal cations and/or irreversible transformations into infinite structures. In this study, we describe the successful demonstration of the water‐ and temperature‐triggered reversible structural transformation between cubane‐ and planar‐type tetranuclear CoII cores sandwiched by polyoxometalates. The arrangements and coordination geometries of the CoII cations were interconverted by simple hydration and dehydration, resulting in the manipulation of the magnetic and optical properties of these compounds. Moreover, this system showed unique thermochromism through temperature‐dependent reversible structural interconversion. |
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| Keywords: | cobalt cubane polyoxometalates structural transformation thermochromism |
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