Bi-stable spin-crossover characteristics of a highly distorted [Fe(1-BPP-COOC2H5)2](ClO4)2·CH3CN complex

Kuppusamy Senthil Kumar; Benoît Heinrich; Sergi Vela; Eufemio Moreno-Pineda; Corinne Bailly; Mario Ruben

doi:10.1039/C8DT04928A

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Bi-stable spin-crossover characteristics of a highly distorted [Fe(1-BPP-COOC₂H₅)₂](ClO₄)₂·CH₃CN complex†

Kuppusamy Senthil Kumar,

*^a Benoît Heinrich,

^a Sergi Vela,

^b Eufemio Moreno-Pineda,

^c Corinne Bailly^d and Mario Ruben

*^ac

Author affiliations

* Corresponding authors

^a Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
E-mail: senthil.kuppusamy@ipcms.unistra.fr

^b Laboratoire de Chimie Quantique, UMR 7111, CNRS-Université de Strasbourg, 4 rue Blaise Pascal, F-67000 Strasbourg, France

^c Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
E-mail: mario.ruben@kit.edu

^d Service de Radiocristallographie, Fédération de Chimie Le Bel FR2010 CNRS-Université de Strasbourg, 1 rue Blaise Pascal, BP 296/R8, 67008 Strasbourg cedex, France

Abstract

A highly distorted high spin Fe(II)-complex, [Fe(1-BPP-COOC₂H₅)₂](ClO₄)₂·CH₃CN, with a trans-N(pyridine)–Fe–N(pyridine) angle (ϕ) of 158.83(17)° showed lattice solvent dependent bi-stable spin-state switching characteristics with T_1/2 = ca. 233 K and a high thermal hysteresis width (ΔT) of 101 K, for the first cooling and heating cycle, unprecedented for the [Fe(BPP)₂]²⁺ series of complexes; the results presented in this study are fundamentally important and have implications towards the realization of device architectures based on bi-stable SCO complexes.

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Article information

DOI: https://doi.org/10.1039/C8DT04928A
Article type: Communication
Submitted: 14 Dec 2018
Accepted: 14 Feb 2019
First published: 14 Feb 2019

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Dalton Trans., 2019,48, 3825-3830

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Bi-stable spin-crossover characteristics of a highly distorted [Fe(1-BPP-COOC₂H₅)₂](ClO₄)₂·CH₃CN complex

K. Senthil Kumar, B. Heinrich, S. Vela, E. Moreno-Pineda, C. Bailly and M. Ruben, Dalton Trans., 2019, 48, 3825 DOI: 10.1039/C8DT04928A

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