Synthesis and Characterization of (1E,2E)-N1,N2-Bis(2-formylphenyl)-N'1,N'2-dihydroxy-ethanediimidamide and Its Complexes with Ni(II),Co(II),Cu(II),Zn(II),Cd(II),Hg(II)and U(VI)O2

摘要

A new vicinal dioxime ligand(1E,2E)-N 1,N2-bis(2-formylphenyl)-N'1,N'2-dihydroxy-ethanediimidamide(H2L)has been synthesized by the reaction of o-anisidine with dichloroglyoxime.Mononuclear complexes with some transition metal ions have been prepared.This compound forms square-planar metal complexes(M(HL)2),with Ni(II),Co(II)and Cu(II),with a metal ligand ratio of 1:2.Also,the tetrahedral complexes of Hg(II),Cd(II)and Zn(II)have been prepared and were found to have a metal ligand ratio of 1:1.The results indicated that the metal ions are coordinated through two N atoms of the ligand,as do most of the vic-dioximes.H2L forms the binuclear nonplanar N,O coordinating complex[(H2L)(OH)2M2] and a metal ligand ratio of 1:1 with M=U(VI)O2.The composition and structural formula of these complexes were confirmed by elemental analysis,IR,MS,and NMR spectroscopic methods.