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A Coordination‐Induced 1,4→1,2‐Quinonediimine Isomerization
Author(s) -
Rall Jochen,
Stange Andreas F.,
Hübler Klaus,
Kaim Wolfgang
Publication year - 1998
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/(sici)1521-3773(19981016)37:19<2681::aid-anie2681>3.0.co;2-9
Subject(s) - isomerization , ligand (biochemistry) , tautomer , chemistry , coordination complex , counterion , chelation , acceptor , hydrogen bond , metal , stereochemistry , photochemistry , crystallography , medicinal chemistry , ion , catalysis , inorganic chemistry , molecule , organic chemistry , receptor , biochemistry , physics , condensed matter physics
Hitherto unused in coordination compounds , the para ‐quinonoid azophenine ( p ‐ap) has now been applied for the synthesis of [Cu(PPh 3 ) 2 ( o ‐ap)](BF 4 ) ( 1 ), in which the ligand exists as its ortho ‐quinonoid tautomer. Additional stabilization of this metal–π donor/ligand–π acceptor arrangement occurs through chelate‐like hydrogen bonding between the NH functionalities, which are both now ortho ‐positioned, and the BF 4 − counterion.