Synthesis, crystal, molecular and electronic structures of hydride carbonyl ruthenium(II) complexes with pyridine and its derivative ligands

[RuHCl(CO)(PPh3)2(py)], [RuHCl(CO)(PPh3)2(pyIm)] and [RuCl(CO)(PPh3)2(pyoh)]·2CH3OH complexes (where py = pyridine, pyIm = imidazo[1,2-α]pyridine, pyoh = 2-hydroxy-6-methylpyridine) have been prepared and studied by IR, NMR, UV–Vis spectroscopy and X-ray crystallography. Electronic structures and bonding of the complexes were defined on the basis of DFT method, and the pyridine derivative ligands were compared on the basis of their donor–acceptor properties. Values of the ligand field parameter 10Dq and Racah’s parameters were estimated for the studied compounds, and the luminescence properties were determined.

[RuHCl(CO)(PPh3)2(py)], [RuHCl(CO)(PPh3)2(pyIm)] and [RuCl(CO)(PPh3)2(pyoh)]·2CH3OH complexes (where py = pyridine, pyIm = imidazo[1,2-α]pyridine, pyoh = 2-hydroxy-6-methylpyridine) have been prepared and studied by IR, NMR, UV–Vis spectroscopy and X-ray crystallography. Electronic structures and bonding of the complexes were defined on the basis of DFT method, and the cis arrangement of PPh3 ligands is connected with the stronger donor properties of pyoh ligand compared with pyridine and imidazo[1,2-α]pyridine. Values of the ligand field parameter 10Dq and Racah’s parameters were estimated for the studied compounds, and the luminescence properties were determined.Figure optionsDownload as PowerPoint slide