Mono and dinuclear complexes of half-sandwich platinum group metals (Ru, Rh and Ir) bearing a flexible pyridyl-thiazole multidentate donor ligand
Author(s)
Date issued
2009
In
J. Organomet. Chem.
Vol
2
No
695
From page
226
To page
234
Subjects
dinuclear pyridylthiazole platinum group half sandwich prepn structure UV pyridylthiazole reaction chloro benzene cyclopentadienyl phosphino ruthenium rhodium iridium crystal structure pyridylthiazole ruthenium rhodium iridium half sandwich prepn mol structure pyridylthiazole ruthenium rhodium iridium half sandwich prepn
Abstract
The mononuclear cationic complexes [(?6-C6H6)RuCl(L)]+ (1, L = 2,2'-bis(2-pyridyl)-4,4'-bithiazole), [(?6-p-iPrC6H4Me)RuCl(L)]+ (2), [(?5-C5H5)Ru(PPh3)(L)]+ (3), [(?5-C5Me5)Ru(PPh3)(L)]+ (4), [(?5-C5Me5)RhCl(L)]+ (5), [(?5-C5Me5)IrCl(L)]+ (6) as well as the dinuclear dicationic complexes [{(?6-C6H6)RuCl}2(L)]2+ (7), [{(?6-p-iPrC6H4Me)RuCl}2(L)]2+ (8), [{(?5-C5H5)Ru(PPh3)}2(L)]2+ (9), [{(?5-C5Me5)Ru(PPh3)}2(L)]2+ (10), [{(?5-C5Me5)RhCl}2(L)]2+ (11) and [{(?5-C5Me5)IrCl}2(L)]2+ (12) were synthesized from 2,2'-bis(2-pyridyl)-4,4'-bithiazole (L) and the corresponding complexes [(?6-C6H6)Ru(?-Cl)Cl]2, [(?6-p-iPrC6H4Me)Ru(?-Cl)Cl]2, [(?5-C5H5)Ru(PPh3)2Cl], [(?5-C5Me5)Ru(PPh3)2Cl], [(?5-C5Me5)Rh(?-Cl)Cl]2 and [(?5-C5Me5)Ir(?-Cl)Cl]2, resp. All complexes were isolated as hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV-visible spectroscopy. The x-ray crystal structure analyses of [3]PF6, [5]PF6, [8](PF6)2 and [12](PF6)2 reveal a typical piano-stool geometry around the metal centers with a five-membered metallo-cycle in which 2,2'-bis(2-pyridyl)-4,4'-bithiazole acts as a N,N'-chelating ligand. [on SciFinder(R)]
Publication type
journal article