Synergistic spin transition between spin crossover and spin-peierls-like singlet formation in the halogen-bonded molecular hybrid system: [Fe(Iqsal) 2][Ni(dmit)2]×CH3CN×H2O

Kappei Fukuroi; Kazuyuki Takahashi; Tomoyuki Mochida; Takahiro Sakurai; Hitoshi Ohta; Takashi Yamamoto; Yasuaki Einaga; Hatsumi Mori

doi:10.1002/anie.201309865

Synergistic spin transition between spin crossover and spin-peierls-like singlet formation in the halogen-bonded molecular hybrid system: [Fe(Iqsal) ₂][Ni(dmit)₂]×CH₃CN×H₂O

Kappei Fukuroi, Kazuyuki Takahashi, Tomoyuki Mochida, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga, Hatsumi Mori

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

To introduce halogen-bond interactions between a cation and an anion, a novel Fe^III complex from iodine-substituted ligands involving a paramagnetic nickel dithiolene anion was prepared and characterized. The compound exhibited the synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a crucial role in the synergistic magnetic transition between d- and π-spins. In addition, the compound showed the light-induced excited spin state trapping effect. Something to get crossover: An Fe^III complex with iodine-substituted ligands involving a paramagnetic nickel dithiolene anion shows a synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a significant role in the synergistic magnetic transition between d- and π-spins.

Original language	English
Pages (from-to)	1983-1986
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	53
Issue number	7
DOIs	https://doi.org/10.1002/anie.201309865
Publication status	Published - 2014 Feb 10

Keywords

halogen bonds
iron complexes
nickel complexes
phase transitions
spin crossover

ASJC Scopus subject areas

Catalysis
Chemistry(all)

Access to Document

10.1002/anie.201309865

Cite this

Fukuroi, K., Takahashi, K., Mochida, T., Sakurai, T., Ohta, H., Yamamoto, T., Einaga, Y., & Mori, H. (2014). Synergistic spin transition between spin crossover and spin-peierls-like singlet formation in the halogen-bonded molecular hybrid system: [Fe(Iqsal) ₂][Ni(dmit)₂]×CH₃CN×H₂O. Angewandte Chemie - International Edition, 53(7), 1983-1986. https://doi.org/10.1002/anie.201309865

Synergistic spin transition between spin crossover and spin-peierls-like singlet formation in the halogen-bonded molecular hybrid system : [Fe(Iqsal) ₂][Ni(dmit)₂]×CH₃CN×H₂O. / Fukuroi, Kappei; Takahashi, Kazuyuki; Mochida, Tomoyuki et al.

In: Angewandte Chemie - International Edition, Vol. 53, No. 7, 10.02.2014, p. 1983-1986.

Research output: Contribution to journal › Article › peer-review

Fukuroi, K, Takahashi, K, Mochida, T, Sakurai, T, Ohta, H, Yamamoto, T , Einaga, Y & Mori, H 2014, 'Synergistic spin transition between spin crossover and spin-peierls-like singlet formation in the halogen-bonded molecular hybrid system: [Fe(Iqsal) ₂][Ni(dmit)₂]×CH₃CN×H₂O', Angewandte Chemie - International Edition, vol. 53, no. 7, pp. 1983-1986. https://doi.org/10.1002/anie.201309865

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AB - To introduce halogen-bond interactions between a cation and an anion, a novel FeIII complex from iodine-substituted ligands involving a paramagnetic nickel dithiolene anion was prepared and characterized. The compound exhibited the synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a crucial role in the synergistic magnetic transition between d- and π-spins. In addition, the compound showed the light-induced excited spin state trapping effect. Something to get crossover: An FeIII complex with iodine-substituted ligands involving a paramagnetic nickel dithiolene anion shows a synergy between a spin-crossover transition and a spin-Peierls-like singlet formation. The halogen-bond interactions between the iodine and the sulfur atoms stabilized the paramagnetic state of π-spins and played a significant role in the synergistic magnetic transition between d- and π-spins.

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