The Synthesis of some Macrocyclic Dilactams and Their Complexes with Ba(II) and Mg(II) Perchlorates

Abstract

5,8-Dioxa-2,11-diazatricyclo[16,4,0,0^12,17]docosa-12,14,16,18,20,22(1)-hexaene-3,10-dione(V); 5,8,18,21-tetraoxa-2, 11-diazatricyclo[20,4,0,0^12,17]hexacosa-12,14,16,22,24,26(1)-hexaene-3,10-dione(VI); 5,8,18,21,24-pentaoxa-2,11-diazatricyclo[23,4,0,0^12,17] nonacosa-l2,14,16,25,27,29(1)-hexaene-3,10-dione(VII) have been synthesized by reaction of 3,6-dioxaoctane-1,8-dioic acid dichloride(1) with 2, 2′-diaminobiphenyl (II); 1,2-bis(o-aminophenoxy)ethane(III) and 1,5-bis(o-aminophenoxy)-3-oxapentane(IV) respectively and their complexes with Ba(II) have been isolated (metal-ligand ratio 1:2). It was found that ligand(VI) gave complexes with Mg(II) (metal-ligand ratio 1:3). The structures of these new compounds are suggested on the basis of elemental analysis, molecular weight determination, ¹H-n.m.r., i.r., and U.V. visible spectral data.