Luminescent and electrochemical properties of four novel butterfly-shaped hetero-pentanuclear [Zn4Ln] complexes constructed from a bis(salamo)-type ligand

Publication date: 5 November 2018
Source:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, Volume 204
Author(s): Jing Hao, Xiao-Yan Li, Lan Wang, Yang Zhang, Wen-Kui Dong
Four novel butterfly-shaped hetero-pentanuclear 3d–4f complexes [Zn4(L)2Sm(H2O)4]3NO3·2EtOH (1) [Zn4(L)2Eu(NO3)2(MeOH)(EtOH)]NO3·H2O (2), [Zn4(L)2Gd(H2O)4]3NO3·MeOH·EtOH (3) and [Zn4(L)2Tb(NO3)(EtOH)(H2O)2]NO3·MeOH·EtOH (4) were synthesized by the reactions of a bis(salamo)-type tetraoxime ligand (H4L) with Zn(OAc)2·2H2O and Ln(NO3)3·6H2O (Ln = Sm, Eu, Gd and Tb), respectively. The structures of complexes 1–4 were fully characterized by elemental analyses, FT–IR, UV–Vis spectroscopy and single crystal X-ray crystallography, and their luminescence properties were also discussed. In addition, cyclic voltammograms were used to characterize electrochemical properties of the Zn(II)–Ln(III) (Ln = Sm, Eu, Gd and Tb) complexes.

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