Bis‐Copper(II)/π‐Radical Multi‐Heterospin System with Non‐innocent Doubly  N ‐Confused Dioxohexaphyrin(1.1.1.1.1.0) Ligand | Zendy

Yamasumi Kazuhisa | Zendy; Nishimura Keiichi | Zendy; Hisamune Yutaka | Zendy; Nagae Yusuke | Zendy; Uchiyama Tomoki | Zendy; Kamitani Kazutaka | Zendy; Hirai Tomoyasu | Zendy; Nishibori Maiko | Zendy; Mori Shigeki | Zendy; Karasawa Satoru | Zendy; Kato Tatsuhisa | Zendy; Furukawa Ko | Zendy; Ishida Masatoshi | Zendy; Furuta Hiroyuki | Zendy

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Bis‐Copper(II)/π‐Radical Multi‐Heterospin System with Non‐innocent Doubly N ‐Confused Dioxohexaphyrin(1.1.1.1.1.0) Ligand

Author(s) -

Yamasumi Kazuhisa,

Nishimura Keiichi,

Hisamune Yutaka,

Nagae Yusuke,

Uchiyama Tomoki,

Kamitani Kazutaka,

Hirai Tomoyasu,

Nishibori Maiko,

Mori Shigeki,

Karasawa Satoru,

Kato Tatsuhisa,

Furukawa Ko,

Ishida Masatoshi,

Furuta Hiroyuki

Publication year - 2017

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201704321

Subject(s) - unpaired electron , delocalized electron , antiaromaticity , chemistry , electron paramagnetic resonance , copper , radical , ligand (biochemistry) , crystallography , paramagnetism , divalent , redox , open shell , photochemistry , bridging ligand , aromaticity , inorganic chemistry , crystal structure , molecule , nuclear magnetic resonance , organic chemistry , physics , receptor , quantum mechanics , biochemistry

A contracted doubly N ‐confused dioxohexaphyrin(1.1.1.1.1.0) complex consisting of two paramagnetic copper metals and open‐shell π‐radical ligand was synthesized as a new multi‐heterospin motif. X‐ray spectroscopy supported the divalent character of the inner copper centers, and electron paramagnetic resonance and magnetometric studies suggested the presence of unpaired d electrons strongly antiferromagnetically coupled with π‐radicals delocalized on the macrocycle. The 25 π non‐innocent dioxohexaphyrin ligand allowed the facile interconversion between antiaromatic 24 π and aromatic 26 π species, respectively, upon redox reactions.

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