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Supramolecular Complexation of Polynuclear Aqua Ions: A Crown Ether Adduct of a μ ‐Oxo‐Bridged Iron( III ) Aqua Dimer
Author(s) -
Junk Peter C.,
McCool Brian J.,
Moubaraki Boujemaa,
Murray Keith S.,
Spiccia Leone
Publication year - 1999
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(19990802)38:15<2224::aid-anie2224>3.0.co;2-t
Subject(s) - adduct , dimer , chemistry , crown ether , supramolecular chemistry , ion , ether , polymer chemistry , medicinal chemistry , molecule , organic chemistry
Hydrolysis and polymerization of [Fe(OH 2 ) 6 ] 3+ in aqueous solution leads, in the early stages, to the oxo‐bridged binuclear aqua ion [(H 2 O) 5 Fe( μ ‐O)Fe(OH 2 ) 5 ] 4+ , which could be obtained in crystalline form through the use of [18]crown‐6. The complex exhibits an almost linear Fe‐O‐Fe moiety and antiferromagnetic coupling that is consistent with current descriptions of exchange coupling in mono oxo‐bridged binuclear Fe III complexes.