The non-template synthesis of dinucleating macrocyclic Schiff bases derived from thiophen, and their di-silver complexes; X-ray crystal structures of two of the products

Abstract

Novel marocylic Schiff bases containing thiophen are prepared by the non-template condensation of α,ω-amino-ethers with thiophen-2,5-dicarbaldehyde, and the corresponding di-silver complexes are prepared either by carrying out the reaction in the presence of silver cations or by adding silver cations to the preformed macrocycle; the X-ray structures of 3,9,16,22-tetra-aza-6,19-dioxa-27,28-dithiatricylo [22.2.1.1^11,14]octacosa-2,9,11,13,15,22,24,26-octaene and diaqua-(3,12,19,28-tetra-aza-6,9,22,25-tetraoxa-33,34-dithiatricyclo[28.2.1.1^14,17]-tetratriaconta-2,12,14,16,18,28,30,32-octaene) bisper-chloratodisilver(I) have been determined.