Mono and dinuclear arene ruthenium complexes containing 6,7-dimethyl-2,3-di(pyridine-2-yl)quinoxaline as chelating ligand: Synthesis and molecular structure
Author(s)
Govindaswamy, Padavattan
Saeid-Mohamed, Cynthia
Date issued
2007
In
Polyhedron
Vol
15
No
26
From page
4065
To page
4072
Subjects
arene ruthenium pyridinyl quinoxaline prepn crystal mol structure catalyst acetophenone transfer hydrogenation catalyst arene ruthenium pyridinyl quinoxaline prepn
Abstract
The mononuclear cations of the general formula [(?6-arene)RuCl(dpqMe2)]+ (dpqMe2 = 6,7-dimethyl-2,3-di(pyridine-2-yl)quinoxaline; arene = C6H6, 1; C6H5Me, 2; p-PriC6H4Me, 3; C6Me6, 4) as well as the dinuclear dications [(?6-arene)2Ru2Cl2(?-dpqMe2)]2+ (arene = C6H6, 5; C6H5Me, 6; p-PriC6H4Me, 7; C6Me6, 8) have been synthesized from 6,7-dimethyl-2,3-di(pyridine-2-yl)quinoxaline (dpqMe2) and the corresponding chloro complexes [(?6-C6H6)Ru(?-Cl)Cl]2, [(?6-C6H5Me)Ru(?-Cl)Cl]2, [(?6-p-PriC6H4Me)Ru(?-Cl)Cl]2 and [(?6-C6Me6)Ru(?-Cl)Cl]2, resp. The x-ray crystal structure analyses of [1][PF6], [3][PF6] and [6][PF6]2 reveal a typical piano-stool geometry around the metal center; in the dinuclear complexes the two chloro ligands, with respect to each other, are trans oriented. [on SciFinder(R)]
Publication type
journal article