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Giant anisotropic thermal expansion of copper-cyanido flat layers with flexible copper nodes
Yuudai Iwai1, Manabu Nakaya2, Yuta Tsuji3
1Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. ohba@chem.kyushu-univ.jp.
Abstract:
Flat layers are usually considered as structurally rigid motifs in two-dimensional (2D) materials. In this work, we demonstrate that a flat honeycomb-layer composed of distorted tri-coordinate copper ions bridged with cyanidos in (tetraethylammonium)Cu2(CN)3 exhibits high in-plane flexibility. This resulted in an extremely large anisotropic 2D-thermal expansion.
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