235105-13-2Relevant academic research and scientific papers
Reactivity of a binuclear Ru(II) N2-bridged complex towards phosphines:facile access to novel mono and binuclear phosphorous derivatives. X-ray structural characterization of two unusual binuclear complexes containing 'pincer' ligands: [{RuCl2(η(3)-NN'N)}2(μ-η(2)-P2)] ...
Tio, Ignacio del,Gossage, Robert A.,Lutz, Martin,Spek, Anthony L.,Koten, Gerard van
, p. 69 - 79 (2008/10/08)
Treatment of the dinitrogen bridged complex [{RuCl2(η(3)-NN'N)}2(μ-N2)] (1, NN'N = 2,6-bis[(dimethylamino)methyl]pyridine) with a variety of monodentate phosphorous ligands results in the formation of the corresponding mononuclear derivatives [RuCl2(η(3)-NN'N)(PR3)] (R3 = Ph3, 2; Ph2H, 3; Me3, 4; (OMe)3, 5). When potentially bidentate bis-phosphines are used, the results are found to be ligand dependent; with one or two equivalents of bis(diphenylphosphino)methane (dppm), the only productobserved is the mononuclear derivative [RuCl2(η(2)-NN'N)(η(2)-dppm)] (6), which contains the diphosphine acting as a chelating ligand. However, the use of bis-phosphines such as 1,2-bis(diphenylphosphino)ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp) or 1,1'-bis[di(p-tolyl)phosphino]ferrocene (dtpf), results in the formation of binuclear products: [{RuCl2(η(3)-NN'N)}2(μ-dppe)] (7),[{RuCl2(η(3)-NN'N)}2(μ-dppp)] (8) and [(RuCl2(η(3)-NN'N))2(μ-dtpf)] (9), respectively. In these cases, the phosphine ligands are bridging between two Ru centered moieties. The X-ray structure of complex 8 is reported. Treatment of complex 1 with the potentially terdentate phosphine ligand 1,3-bis[(diphenylphosphino)methyl]benzene (PCHP) affords the binuclear derivative [{RuCl2(η(3)-NN'N)}2(μ-η(2)-PCHP)] (10). Compound 10 has been characterized by X-ray diffraction methods and represents the first example in which a Ru complex contains a bridging and noncyclometallatedPCHP 'pincer' ligand.
