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The macrobicycle derived from bis-tren and containing diphenoxy groups as spacers, L 1 , was synthesized and used as receptor for anions. The binding ability of the new receptor for some aromatic carboxylates [phthalate (ph 2− ), isophthalate (iph 2− ), terephthalate (tph 2− ), benezenetricarboxylate (btc 3− ), and the herbicide 4-amino-3,5,6-trichloro-2-pyridinecarboxylate...
The tetraprotonated form of the dioxatetraazamacrocycle, 6,19-dioxa-3,9,16,22-tetraaza[22.2.2.2 11,14 ]triaconta-1(26),11,13,24,27,29-hexaene, (H 4 L 1 ) 4+ , was used as the receptor for binding studies with carboxylate anionic substrates of different shapes, sizes, and charges [succinate (suc 2− ), cyclohexanetricarboxylate (cta 3− ), phthalate (ph...
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