Zn(II)-azide complexes of diimine and azoimine functions: Synthesis, spectra and X-ray structures

Two new series of Zn(II) complexes of α/β-naphthyl-(2-pyridylmethylene)amine and 1-alkyl-2-(naphthyl-α/β-azo)imidazoles with N3- as a counter ion are described in this article. The single crystal X-ray structure of [Zn(β-naphthyl-(2-pyridylmethylene)amine)(N3)2]2 has revealed an end-on azido bridged dimer while [Zn(1-ethyl-2-(naphthyl-β-azo)imidazole)2(N3)2] is a monomer. The complexes are spectroscopically characterized. Examination of luminescence properties of the complexes suggests that the Schiff bases are emissive and the naphthylazo compounds are non-emissive.

Two series of Zn(II)-azido complexes of diimine (NCCN) and azoimine (NNCN) are described. The ligands belong to α/β-naphthyl-(2-pyridylmethylene)amine (diimine) and 1-alkyl-2-(naphthyl-α/β-azo)imidazoles (azoimine). The complexes are structurally characterized. The diimine system has end-on azido bridged ligands and the azoimine system gives terminal azido bridged complexes. They exhibit high intense ligand centered emissions.Figure optionsDownload as PowerPoint slide