Half sandwich platinum group metal complexes containing tetradentate N-donor ligand bearing two pyrazolyl-pyridine units linked by an aromatic spacer

摘要

Reaction of the bis-bidentate ligand, 1,3-bis((3-(pyridin-2-yl)-1-pyrazol-1-yl)methyl)benzene (∩), containing two chelating pyrazolyl-pyridine units connected by an aromatic spacer with platinum group metal complexes results in a series of cationic binuclear complexes, [(η-arene)Ru(∩)Cl] (arene = CH, ; p-iPrCHMe, ; CMe, ), [(η-CMe)M(∩)Cl] (M = Rh, ; Ir, ), [(η-C5H5)M(∩)(PPh)] (M = Ru, ; Os, ), [(η-CMe)Ru(∩)(PPh)] () and [(η-CH)Ru(∩)(PPh)] (). All these complexes have been isolated as their hexafluorophosphate salts and fully characterized by use of a combination of NMR spectroscopy, IR spectroscopy and mass spectrometry. The solid state structures of three complexes, [][PF], [][PF] and [][PF], has been determined by X-ray crystallographic studies.