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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 |
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| Authors: | Kappei Fukuroi Prof?Dr Kazuyuki Takahashi Prof?Dr Tomoyuki Mochida Dr Takahiro Sakurai Prof?Dr Hitoshi Ohta Dr Takashi Yamamoto Prof?Dr Yasuaki Einaga Prof?Dr Hatsumi Mori |
| Affiliation: | 1. Department of Chemistry, Kobe University, 1‐1 Rokkodai, Kobe 657‐8501 (Japan);2. Center for Supports to Research and Education Activities, Kobe University, 1‐1 Rokkodai, Kobe 657‐8501 (Japan);3. Molecular Photoscience Research Center, Kobe University, 1‐1 Rokkodai, Kobe 657‐8501 (Japan);4. Department of Chemistry, Keio University, Hiyoshi, Yokohama 223‐8522 (Japan);5. Institute for Solid State Physics, The University of Tokyo, 5‐1‐5 Kashiwanoha, Kashiwa 277‐8581 (Japan) |
| Abstract: | 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. |
| Keywords: | halogen bonds iron complexes nickel complexes phase transitions spin crossover |
