Synthesis, crystal structure and luminescent properties of transition metals complexes based on imidazole derivatives

In this paper, we synthesized complexes of imidazole derivatives. The structures of complexes Ni(L1)2(CNS)2 (complex 1), Zn(L2)2(CNS)2 (complex 2) and MnL3Cl2 (complex 3) were determined by X-ray diffraction in those complexes. The space groups of complex 1, 2 and 3 are C2c/c, P-1 and P21/n, respectively. Ni (II), Zn (II) ions are coordinated by four nitrogen atoms of ligands and two nitrogen atoms of thiocyanate. Mn(II) ion is coordinated by three nitrogen atoms of ligand and two chlorine atoms. Single crystal X-ray studies on complex 2 and complex 3 indicate that the molecules of the complexes 2 and 3 link together through intermolecular NH⋯S hydrogen bonds and NH⋯Cl hydrogen bonds, respectively. The DFT (Density Functional Theory) and luminescent properties of these complexes are discussed. The calculated results are in good agreement with the experimental data.

► SCN− as ligand in the complexes. ► The crystal structures of complexes 1–3 are good. ► Luminescent properties of these complexes are good.