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Eight water insoluble complexes of tetramethylsulfonated calix[4]resorcinarenes 1 and 2 (–CH3 and –C5H11) with phenothiazine derivative, 3, were obtained under substoichiometric conditions by mixing aqueous solutions of the initial reagents. It was found that complexation of cationic 3 by macrocycles was provided by both Coulomb interaction with the negative sulfonato-groups on the upper rim and by...
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