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A New Family of Anionic FeIII Spin Crossover Complexes Featuring a Weak‐Field N2O4 Coordination Octahedron |
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| Authors: | Prof?Dr Kazuyuki Takahashi Kiko Kawamukai Mitsunobu Okai Prof?Dr Tomoyuki Mochida Dr Takahiro Sakurai Prof?Dr Hitoshi Ohta Dr Takashi Yamamoto Prof?Dr Yasuaki Einaga Prof?Dr Yoshihito Shiota Prof?Dr Kazunari Yoshizawa |
| Institution: | 1. Department of Chemistry, Kobe University, Kobe, Japan;2. Center for Supports to Research and Education Activities, Kobe University, Kobe, Japan;3. Molecular Photoscience Research Center, Kobe University, Kobe, Japan;4. Department of Chemistry, Keio University, Yokohama, Japan;5. Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan |
| Abstract: | Unprecedented anionic FeIII spin crossover (SCO) complexes involving a weak‐field O,N,O‐tridentate ligand were discovered. The SCO transition was evidenced by the temperature variations in magnetic susceptibility, Mössbauer spectrum, and coordination structure. The DFT calculations suggested that larger coefficients on the azo group in the HOMO?1 of a ligand might contribute to the enhancement of a ligand‐field splitting energy. The present anionic SCO complex also exhibited the light‐ induced excited‐spin‐state trapping effect. |
| Keywords: | anions iron photoinduced spin transition spin crossover weak-ligand field |