Novel Fe(II) spin crossover complexes involving a chalcogen-bond and π-stacking interactions with a paramagnetic and nonmagnetic M(dmit)2 anion (M = Ni, Au; Dmit = 4,5-dithiolato-1,3-dithiole-2-thione)

Mitsunobu Okai, Kazuyuki Takahashi, Takahiro Sakurai, Hitoshi Ohta, Takashi Yamamoto, Yasuaki Einaga

研究成果: Article査読

10 被引用数 (Scopus)

抄録

To introduce both an inter-sulphur atom and π-stacking interaction between a spin crossover (SCO) cation and paramagnetic anion, we designed and synthesised two novel Fe(ii) SCO compounds involving a terpyridine-type thiazole containing ligand with the paramagnetic Ni(dmit)2 and nonmagnetic Au(dmit)2 anion (dmit = 4,5-dithiolato-1,3-dithiole-2-thione). The temperature variations of magnetic susceptibility and Mössbauer spectroscopy revealed that both complexes exhibited an almost complete SCO conversion, and moreover, the Ni(dmit)2 anion was in a paramagnetic state down to 2 K. The crystal structures for the Ni(dmit)2 complex at 213 and 400 K indicated that the chalcogen-bond and π-stacking interaction would be enhanced by the electrostatic interaction between the cation and anion, preventing the π-radicals from dimerising. The light-induced excited spin state trapping effect was observed at 5 K.

本文言語English
ページ(範囲)7858-7864
ページ数7
ジャーナルJournal of Materials Chemistry C
3
30
DOI
出版ステータスPublished - 2015 8月 14

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料化学

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「Novel Fe(II) spin crossover complexes involving a chalcogen-bond and π-stacking interactions with a paramagnetic and nonmagnetic M(dmit)2 anion (M = Ni, Au; Dmit = 4,5-dithiolato-1,3-dithiole-2-thione)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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