Luminescent cyclometallated platinum(II) complexes with N-benzoyl thiourea derivatives as ancillary ligands

A series of cyclometallated 2-phenylpyridine Pt(II) complexes having N-benzoyl thiourea derivatives as ancillary ligands were prepared and characterised by elemental analysis, IR and UV–Vis spectroscopy, 1H and 13C NMR spectroscopy as well as by X-ray diffraction on single-crystal. All complexes were obtained as a single isomer with N atom of the 2-phenylpyridine ligand and S atom of the N-benzoyl thiourea derivatives coordinated in trans positions to the platinum metal as evidenced by using X-ray crystallography and NMR spectroscopy. All Pt(II) complexes show good luminescence properties at room temperature, both in dichloromethane solution and in solid state.

Graphical abstractCyclometallated 2-phenylpyridine (ppy) Pt(II) complexes bearing N-benzoyl thiourea derivatives (BTU) as ancillary ligands were prepared as single isomers with N and S atoms in trans position by reacting [Pt(Hppy)(ppy)(Cl)] with corresponding BTU sodium salts. These platinum(II) complexes show good photoluminescence properties both in dichloromethane solution and in solid state at room temperature.Figure optionsDownload full-size imageDownload as PowerPoint slide