Copper(II) complexes derived from di-2-pyridyl ketone N(4),N(4)-(butane-1,4-diyl)thiosemicarbazone: Crystal structure and spectral studies

Neutral copper(II) complexes with a tetradentate NNNS Schiff base have been synthesized using the ligand, di-2-pyridyl ketone N(4),N(4)-(butane-1,4-diyl)thiosemicarbazone (HL). A series of five binuclear complexes of HL with general stoichiometry CuLX [X = Cl (1), Br (2), NO3 (3), N3 (4) and SCN (5)], another dinuclear complex [Cu2LCl3] (6) with copper(II) chloride, and a tetranuclear complex [Cu4L4(SO4)2] (7) with copper(II) sulfate were also synthesized. The crystal structure of [Cu2L2(SO4)]2 · 3H2O has been determined by X-ray diffraction studies. Crystal analysis shows that the complex is tetranuclear with five coordinated copper centers.

Graphical abstractNeutral copper(II) complexes with a tetradentate NNNS Schiff base have been synthesized using the ligand, di-2-pyridyl ketone N(4),N(4)-(butane-1,4-diyl)thiosemicarbazone (HL). A series of five binuclear complexes of HL with the general stoichiometry CuLX [X = Cl (1), Br (2), NO3 (3), N3 (4) and SCN (5)], a dinuclear complex [Cu2L1Cl3] (6) with copper(II) chloride, and a tetranuclear complex [Cu4L41(SO4)2] (7) with copper(II) sulfate were also synthesized. The crystal structure of [Cu2L2(SO4)] · 3H2O has been determined by X-ray diffraction studies. Crystal analysis shows that the complex is tetranuclear with five coordinated copper centers.Figure optionsDownload full-size imageDownload as PowerPoint slide