916987-77-4Relevant academic research and scientific papers
Direct preparation of carbonatoruthenium(II) derivatives (2) (see abstract) and their use as precursor of the ruthenium dihydride (p-cymene) [PCy(3)] and the [Ru(VI)-arene] (L)[(MeCN)(2)] [[BF(4)](2)] complexes
Demerseman, Bernard,Mbaye, Mbaye Diagne,Semeril, David,Toupet, Loic,Bruneau, Christian,Dixneuf, Pierre H.
, p. 1174 - 1181 (2006)
[RuCl2(η6-arene)(PR3)] complexes react with K2CO3 in the presence of water to afford the carbonatoruthenium(II) derivatives [Ru(η2-O2CO) (η6-arene)(PR3)] (2; arene = p-cymene, R = Cy, Ph, or Me; arene = hexamethylbenzene, R = Me) involving a planar Ru(η2- O2CO) moiety as shown by X-ray crystal structure determination of 2a (p-cymene, PCy3) and 2d (hexamethylbenzene, PMe3). The complex [Ru(η2-O2CO)(p-cymene)(PCy3)] is cleanly converted in hot methanol into the dihydride (RuH2(p-cymene) (PCy3)]. The related complexes [Ru(η2-O 2CO)(η6-arene)(IMes)] [arene = p-cymene or hexamethylbenzene, IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] are straightforwardly prepared by treating [RuCl2(η6- arene)]2 precursors with 1,3-bis(2,4,6-trimethylphenyl)imidazolium chloride and K2CO3 in THF at reflux. The removal of the carbonato ligand from complexes 2 with HBF4 in the presence of acetonitrile leads to the dicationic derivatives [Ru(η6-arene)(L) (MeCN)2][BF4]2 (L = PR3 or IMes). Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
