Journal of the Chemical Society, Dalton Transactions p. 257 - 261 (1990)
Update date:2022-08-28
Topics:
DelDonno, Theodore A.
Matsumoto, Naohide
Busch, Daryle H.
Alcock, Nathaniel W.
A new macrocyclic ligand having a carefully selected pendant group has been synthesized and its cobalt(III) complex has been prepared and characterized by X-ray crystallography. 1,4,7,10-Tetra-azacyclododecane-N-m-toluic acid was prepared via the corresponding nitrile, from m-cyanobenzylbromide and the tetra-azamacrocycle, followed by formation of the cobalt(III) complex and then hydrolysis of the cyano group in the complex.The structure reveals a novel dinuclear structure in which the dangling carboxyl groups link the two metal ions.This is consistent with the molecular design since the pendant group was selected to prevent chelation of the carboxyl group to the same metal ion as the parent macrocyle.Crystal data: <
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