Ruthenium(II) complexes with quinoline carboxylate as a co-ligand

Ruthenium(II) complexes with the general formulas [Ru(H/Cl)(CO)(PPh3)2(L)] and cis/trans-[Ru(PPh3)2(L)2] (L = isoquinoline-1-carboxylate or quinoline-2-carboxylate) were synthesized and characterized by IR, 1H, 13C and 31P NMR, UV–Vis spectroscopy and X-ray crystallography. The experimental studies were completed by quantum chemical calculations, which were used to describe the nature of the interactions between the ligands and the central ion, and the orbital compositions in the frontier electronic structures. Based on a molecular orbital scheme, the calculated results allowed the interpretation of the UV–Vis spectra obtained at an experimental level. The luminescence properties of the complexes were determined.

Graphical abstractRuthenium(II) complexes with the general formulas [Ru(H/Cl)(CO)(PPh3)2(L)] and cis/trans-[Ru(PPh3)2(L)2] (L = isoquinoline-1-carboxylate or quinoline-2-carboxylate) were synthesized and characterized by IR, 1H, 13C and 31P NMR, UV–Vis spectroscopy and X-ray crystallography. The experimental studies were completed by quantum chemical calculations, which were used to describe the nature of the interactions between the ligands and the central ion, and the orbital compositions in the frontier electronic structures. Based on a molecular orbital scheme, the calculated results allowed the interpretation of the UV–Vis spectra obtained at an experimental level. The luminescence properties of the complexes were determined.Figure optionsDownload full-size imageDownload as PowerPoint slide