Synthesis of new lariat cyclicdiamides and their metal complexes

Abstract

Three new lariat dilactam host molecules were prepared by the reaction of triethyleneglycol dicarboxylic acid dichloride with N,N′-disubstituted-4,7-dioxa-1,10-diazadecane precursors. The amide nitrogen pivot of such compounds are substituted with the benzyl, octyl and dodecyl groups. The complexing ability of these dilactams is displayed with a series of metal complexes of Na + , K + , Ca 2+ , Sr 2+ , Pb 2+ and Ag + ions. The structures determined are consistent with the data of 1 H-NMR, 13 C-NMR, IR spectra and elemental analyses.