Synthesis and spectral studies of macrocyclic Pb(II),Zn(II) and La(III) complexes by template reaction of 1,4-bis(3-aminopropoxy)butane with metal nitrate and salicylaldehyde derivatives

摘要

Six new macrocyclic complexes are synthesised by template reaction of 1,4-bis(3-aminopropoxy)butane with metalnitrate and 1,7-bis(2-formylphenyl)-1,4,7-trioxaheptane or 1,10-bis(2-formylphenyl)-1,4,7,10-tetraoxadecane and theirstructures are proposed on the basis of elemental analysis, FT-IR, UV-Vis, molar conductivity measurements, ~1H NMRand mass spectra. The complexes are 1:2 electrolytes for Pb(II),Zn(II) complexes and 1:3 electrolytes for La(III) asshown by their molar conductivities (Λ_m) in DMSO at 10~(-3)mol L~(-1). The configurations of La(III) and Zn(II) complexesare proposed to probably octahedral.