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The Importance of a β–β Bond for Long‐Range Antiferromagnetic Coupling in Directly Linked Copper( II ) and Silver( II ) Diporphyrins
Author(s) -
Ikeue Takahisa,
Furukawa Ko,
Hata Hiroshi,
Aratani Naoki,
Shinokubo Hiroshi,
Kato Tatsuhisa,
Osuka Atsuhiro
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200501943
Subject(s) - antiferromagnetism , copper , bond , coupling (piping) , range (aeronautics) , chemistry , ion , crystallography , bond length , condensed matter physics , physics , materials science , metallurgy , organic chemistry , crystal structure , business , finance , composite material
Interaction over a distance : Long‐range antiferromagnetic interactions between distant copper( II ) and silver( II ) ions are observed only for triply and singly linked diporphyrins with at least one β – β bond, which underscores the critical importance of this direct bond for antiferromagnetic coupling. These results can be qualitatively accounted for in terms of the spin distribution of copper( II ) and silver( II ) porphyrins (see picture).