Ruthenium(iv) N-confused porphyrin μ-oxo-bridged dimers: acid-responsive molecular rotors

Osamu Iwanaga; Kazuki Fukuyama; Shigeki Mori; Jun Tae Song; Tatsumi Ishihara; Takaaki Miyazaki; Masatoshi Ishida; Hiroyuki Furuta

doi:10.1039/d1ra05063j

Ruthenium(iv) N-confused porphyrin μ-oxo-bridged dimers: acid-responsive molecular rotors

RSC Adv. 2021 Jul 13;11(40):24575-24579. doi: 10.1039/d1ra05063j.

Authors

Osamu Iwanaga¹, Kazuki Fukuyama¹, Shigeki Mori², Jun Tae Song¹, Tatsumi Ishihara¹, Takaaki Miyazaki¹, Masatoshi Ishida¹, Hiroyuki Furuta¹

Affiliations

¹ Department of Applied Chemistry, Graduate School of Engineering, Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan t.miyazaki@fukuoka-u.ac.jp ishida.masatoshi.686@m.kyushu-u.ac.jp hfuruta@cstf.kyushu-u.ac.jp.
² Advanced Research Support Center, Ehime University Matsuyama 790-8577 Japan.

Abstract

Ruthenium(iv) N-confused porphyrin μ-oxo-bridged complexes were synthesized via oxidative dimerization of a ruthenium(ii) N-confused porphyrin complex using 2,2,6,6-tetramethylpiperidine 1-oxyl. The deformed core planes in the dimers conferred a relatively high ring rotational barrier of ca. 16 kcal mol^-1. Rotation of the complexes was controlled by protonating the peripheral nitrogen.