Slow magnetic relaxation in a trinuclear spin-crossover Co(II) compound with metal–metal bonding

Yoshihiro Sekine; Jeongcheol Shin; Sun Hee Kim; Hikaru Zenno; Hisui Kobayashi; Ming-Chuan Cheng; Kil Sik Min; Shie-Ming Peng; Shinya Hayami

doi:10.1039/D5CC03879K

Slow magnetic relaxation in a trinuclear spin-crossover Co(ii) compound with metal–metal bonding

Yoshihiro Sekine,

†^a Jeongcheol Shin,

†^b Sun Hee Kim,

*^cd Hikaru Zenno,

^a Hisui Kobayashi,^a Ming-Chuan Cheng,

^e Kil Sik Min,

^f Shie-Ming Peng^e and Shinya Hayami

*^agh

Author affiliations

* Corresponding authors

^a Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan

^b Department of Chemistry, Duksung Women's University, Seoul 01369, Republic of Korea

^c Metropolitan Seoul Center, Korea Basic Science Institute (KBSI), Seoul 03759, Republic of Korea
E-mail: shkim7@kbsi.re.kr

^d Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea

^e Department of Chemistry, National Taiwan University, Taipei 106, Taiwan

^f Department of Chemistry Education and Science Education Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea

^g Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan

^h International Research Center for Agricultural and Environmental Biology (IRCAEB), 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
E-mail: hayami@kumamoto-u.ac.jp

Abstract

This study investigates the molecular spin-qubit properties of a rigid trinuclear cobalt complex, presenting the first example of spin-crossover in a compound with metal–metal bonds. Pulsed electron paramagnetic resonance spectroscopy provides deeper insight into the spin-qubit behaviour, including the spin–lattice and spin–spin relaxation times.

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DOI: https://doi.org/10.1039/D5CC03879K
Article type: Communication
Submitted: 10 Jul 2025
Accepted: 25 Sep 2025
First published: 07 Oct 2025

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Chem. Commun., 2025, Advance Article

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Slow magnetic relaxation in a trinuclear spin-crossover Co(II) compound with metal–metal bonding

Y. Sekine, J. Shin, S. H. Kim, H. Zenno, H. Kobayashi, M. Cheng, K. S. Min, S. Peng and S. Hayami, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC03879K

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Chemical Communications

Slow magnetic relaxation in a trinuclear spin-crossover Co(ii) compound with metal–metal bonding

Abstract

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Slow magnetic relaxation in a trinuclear spin-crossover Co(II) compound with metal–metal bonding

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