TY - JOUR
T1 - Node Distortion Modulation for Anisotropic Thermal Expansions of Two-dimensional Coordination Polymers
AU - Ohtani, Ryo
AU - Yanagisawa, Junichi
AU - Le Ouay, Benjamin
AU - Ohba, Masaaki
N1 - Funding Information:
This work was supported by JSPS Grant‐in‐Aid for Young Scientists JP18K14245, JSPS Grant‐in‐Aid for Scientific Research on Innovative Areas, Mixed Anion, JP19H04701. This work was partially supported by the Cooperative Research Program of ‘Network Joint Research Centre for Materials and Devices’.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/5
Y1 - 2021/5
N2 - Anisotropic negative thermal expansion is a valuable property of solid-state materials, influencing their micromechanical and functional response. Two flexible two-dimensional (2D) cyanide-bridged coordination polymers (CPs) of type [Fe(salen)]2[M(CN)4] (M=MnN (FeMnN) and Pt (FePt)) were synthesized. Their anisotropic negative thermal expansions was strongly linked to relaxations of node distortions in [Fe(salen)]+ units. Comparison with the [Mn(salen)]+ analogues indicated shorter bond lengths around iron(III), due to the different electronic states. These changes of node structures resulted in FeMnN and FePt exhibiting lower and higher degrees of anisotropic thermal expansion behavior, respectively, than their Mn analogues.
AB - Anisotropic negative thermal expansion is a valuable property of solid-state materials, influencing their micromechanical and functional response. Two flexible two-dimensional (2D) cyanide-bridged coordination polymers (CPs) of type [Fe(salen)]2[M(CN)4] (M=MnN (FeMnN) and Pt (FePt)) were synthesized. Their anisotropic negative thermal expansions was strongly linked to relaxations of node distortions in [Fe(salen)]+ units. Comparison with the [Mn(salen)]+ analogues indicated shorter bond lengths around iron(III), due to the different electronic states. These changes of node structures resulted in FeMnN and FePt exhibiting lower and higher degrees of anisotropic thermal expansion behavior, respectively, than their Mn analogues.
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U2 - 10.1002/cnma.202100026
DO - 10.1002/cnma.202100026
M3 - Article
AN - SCOPUS:85104056124
SN - 2199-692X
VL - 7
SP - 534
EP - 538
JO - ChemNanoMat
JF - ChemNanoMat
IS - 5
ER -
