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Crystals 2016, 6(10), 131; doi:10.3390/cryst6100131

Synthesis, Structure, and Magnetic Properties of New Spin Crossover Fe(II) Complexes Forming Short Hydrogen Bonds with Substituted Dicarboxylic Acids

Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motoka, Nishi-ku, Fukuoka 8190395, Japan
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Academic Editor: Helmut Cölfen
Received: 14 August 2016 / Revised: 28 September 2016 / Accepted: 6 October 2016 / Published: 13 October 2016
(This article belongs to the Section Biomolecular Crystals)
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Abstract

We synthesized new Fe(II) compounds consisting of [Fe(L)2] (HL: 2-Acetylpyridine isonicotinoylhydrazone) and dicarboxylic acids. Single crystal analysis shows that short hydrogen bonds are formed between [Fe(L)2] and dicarboxylic acids. The hydrogen bonding interactions between metal complexes and dicarboxylic acids are complemented by π-π interactions, forming two-dimensional network structures. Magnetic properties show that the Fe(II) compounds exhibit gradual spin crossover behavior around room temperature and a T1/2 value is dependent on the halogen substituent on the dicarboxylic acids. View Full-Text
Keywords: spin crossover; hydrazone complex; hydrogen bond spin crossover; hydrazone complex; hydrogen bond
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Nakanishi, T.; Sato, O. Synthesis, Structure, and Magnetic Properties of New Spin Crossover Fe(II) Complexes Forming Short Hydrogen Bonds with Substituted Dicarboxylic Acids. Crystals 2016, 6, 131.

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