A polymorphism-dependent T1/2 shift of 100 K in a hysteretic spin-crossover complex related to differences in intermolecular weak CH⋯X hydrogen bonds (X = S vs. S and N)

Hiroaki Hagiwara; Shohei Okada

doi:10.1039/C5CC08215C

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A polymorphism-dependent T_1/2 shift of 100 K in a hysteretic spin-crossover complex related to differences in intermolecular weak CH⋯X hydrogen bonds (X = S vs. S and N)†

Hiroaki Hagiwara*^a and Shohei Okada^b

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* Corresponding authors

^a Department of Chemistry, Faculty of Education, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
E-mail: hagiwara@gifu-u.ac.jp

^b Graduate School of Education, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan

Abstract

A neutral mononuclear iron(II) complex with a 1,2,3-triazole-containing tetradentate ligand has been obtained as two solvent-free polymorphs. Both polymorphs show hysteretic spin crossover with a polymorphism-dependent T_1/2 shift of 100 K that spans room temperature due to differences in intermolecular weak CH⋯X hydrogen-bonding interactions (X = S vs. S and N).

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Article information

DOI: https://doi.org/10.1039/C5CC08215C
Article type: Communication
Submitted: 02 Oct 2015
Accepted: 03 Nov 2015
First published: 05 Nov 2015

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Chem. Commun., 2016,52, 815-818

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A polymorphism-dependent T_1/2 shift of 100 K in a hysteretic spin-crossover complex related to differences in intermolecular weak CH⋯X hydrogen bonds (X = S vs. S and N)

H. Hagiwara and S. Okada, Chem. Commun., 2016, 52, 815 DOI: 10.1039/C5CC08215C

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Chemical Communications