TY - JOUR
T1 - Bis-Copper(II)/π-Radical Multi-Heterospin System with Non-innocent Doubly N-Confused Dioxohexaphyrin(1.1.1.1.1.0) Ligand
AU - Yamasumi, Kazuhisa
AU - Nishimura, Keiichi
AU - Hisamune, Yutaka
AU - Nagae, Yusuke
AU - Uchiyama, Tomoki
AU - Kamitani, Kazutaka
AU - Hirai, Tomoyasu
AU - Nishibori, Maiko
AU - Mori, Shigeki
AU - Karasawa, Satoru
AU - Kato, Tatsuhisa
AU - Furukawa, Ko
AU - Ishida, Masatoshi
AU - Furuta, Hiroyuki
N1 - Funding Information:
The part of work was supported by Grant-in-Aids (JP15K13646 to H.F., JP15K05663 to K. F., JP16K05700 and JP17H05377 to M.I.) from Japan Society for the Promotion of Science (JSPS). We acknowledge support from the Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan. The authors also acknowledge Dr. J. Yang and Prof. T. Fujigaya (Kyushu Univ.) for their help in the XPS measurements, and Prof. A. Takahara (Kyushu Univ.) for his helpful comment. The synchrotron radiation experiment was performed at Kyushu University Beamline (BL06/SAGA-LS) with proposal number 2016IK009. The financial support from a bilateral program between JSPS and the National Research Foundation (NRF) of South Africa is also acknowledged.
Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/11/2
Y1 - 2017/11/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85031105403&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85031105403&partnerID=8YFLogxK
U2 - 10.1002/chem.201704321
DO - 10.1002/chem.201704321
M3 - Article
C2 - 28906573
AN - SCOPUS:85031105403
SN - 0947-6539
VL - 23
SP - 15322
EP - 15326
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 61
ER -