A polymorphism-dependent T-1/2 shift of 100 K in a hysteretic spin-crossover complex related to differences in intermolecular weak CH center dot center dot center dot X hydrogen bonds (X = S vs. S and N)

Hagiwara Hiroaki<sup>*</sup>; Okada Shohei

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 center dot center dot center dot X hydrogen bonds (X = S vs. S and N)

作者：Hagiwara Hiroaki^*; Okada Shohei

来源：Chemical Communications, 2016, 52(4): 815-818.

DOI：10.1039/c5cc08215c

摘要

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 center dot center dot center dot X hydrogen-bonding interactions (X = S vs. S and N).