New Ionophoric Calixdiquinones: Coordination Chemistry, Electrochemistry, and X-ray Crystal Structures.
A new library of ionophoric p-tert-butylcalixdiquinones containing ester (1), primary, secondary, and tertiary amide (2-4), and crown ether (5) substituents has been synthesized by treatment of the respective 1,3-bis-substituted p-tert-butylcalixarene with Tl(OCOCF(3))(3) in trifluoroacetic acid. The structures of the free ligands 1 and 2, a p-tert-butylcalixdiquinone bridged at the lower rim by two linked veratrole groups (7), and a previously synthesized p-tert-butylcalixdiquino...Expand abstract
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