Cooperative spin-crossover transition from three-dimensional purely π-stacking interactions in a neutral heteroleptic azobisphenolate FeIII complex with a N3O3 coordination sphere

Suguru Murata; Kazuyuki Takahashi; Tomoyuki Mochida; Takahiro Sakurai; Hitoshi Ohta; Takashi Yamamoto; Yasuaki Einaga

doi:10.1039/C7DT01030C

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Cooperative spin-crossover transition from three-dimensional purely π-stacking interactions in a neutral heteroleptic azobisphenolate Fe^III complex with a N₃O₃ coordination sphere†

Suguru Murata,^a Kazuyuki Takahashi,

*^a Tomoyuki Mochida,

^a Takahiro Sakurai,^b Hitoshi Ohta,^c Takashi Yamamoto

^d and Yasuaki Einaga

Author affiliations

* Corresponding authors

^a Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan
E-mail: ktaka@crystal.kobe-u.ac.jp

^b Research Facility Centre for Science and Technology, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan

^c Molecular Photoscience Research Centre, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan

^d Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan

Abstract

A novel neutral heteroleptic Fe^III complex from two kinds of π-extended tridentate ligands was designed and prepared. The π-ligands formed a three-dimensional purely π-stacking interaction network. The present complex proved to be the first neutral spin-crossover (SCO) Fe^III complex with a N₃O₃ coordination sphere exhibiting an abrupt SCO transition with a thermal hysteresis of 10 K and the light-induced excited spin-state trapping effect.

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Article information

DOI: https://doi.org/10.1039/C7DT01030C
Article type: Communication
Submitted: 22 Mar 2017
Accepted: 27 Mar 2017
First published: 31 Mar 2017

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Dalton Trans., 2017,46, 5786-5789

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Cooperative spin-crossover transition from three-dimensional purely π-stacking interactions in a neutral heteroleptic azobisphenolate Fe^III complex with a N₃O₃ coordination sphere

S. Murata, K. Takahashi, T. Mochida, T. Sakurai, H. Ohta, T. Yamamoto and Y. Einaga, Dalton Trans., 2017, 46, 5786 DOI: 10.1039/C7DT01030C

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Dalton Transactions