78790-91-7Relevant academic research and scientific papers
Preparation of binuclear complexes using 2-(diphenylphosphino)pyridine as a bridging ligand. Synthesis of some ruthenium complexes and their interaction with palladium complexes
Maisonnet, Andre,Farr, James P.,Olmstead, Marilyn M.,Hunt, Catherine T.,Balch, Alan L.
, p. 3961 - 3967 (2008/10/08)
The reactions between Ru(Ph2Ppy)2(CO)3 and (1,5-cyclooctadiene)PdCl2 and between Ru(Ph2PPy)2(CO)2Cl2 and Pd2-(dibenzylideneacetone)3 have been examined as routes to binuclear Ru/Pd complexes. The first reaction produces Ru-(Ph2Ppy)2(CO)2Cl2, Ru(Ph2Ppy)(CO)2Cl2, Pd2(Ph2Ppy)2Cl2, and two isomers of RuPd(Ph2Ppy)2(CO)2Cl2, while the second forms predominantly the two binuclear products. Syntheses of Ru3(CO)9(Ph2Ppy)3, Ru(Ph2Ppy)2(CO)3, and Ru-(Ph2Ppy)2(CO)2Cl2 from Ru3(CO)12 are reported as are the preparations of Pd(Ph2Ppy)2Cl2 and Pd2(Ph2Ppy)2Cl2. All new compounds have been characterized by infrared spectroscopy and 31P{1H} NMR spectroscopy. The two isomers of RuPd(Ph2Ppy)2(CO)2Cl2 interconvert on heating in solution. The structure of one isomer has been determined unambiguously by X-ray crystallography. RuPd(Ph2Ppy)2(CO)2Cl2 crystallizes in the space group P21/c with cell dimensions (determined at 140 K) of a = 10.493 (2) ?, b = 17.685 (4) ?, c = 21.470 (5) ?, β = 92.07 (2)°, Z = 4, and V = 3982 (1) ?3. The structure was refined by blocked cascade least-squares to a conventional R value of 0.043 by using 4605 significant reflections. The compound possesses a Pd-Ru bond with a distance of 2.660 (1) ?. The palladium atom is four-coordinate with a Ru, Cl, P, N donor set, while the ruthenium atom is six-coordinate with a Pd, Cl, P, N, C2 donor set.
Chelating 2-(diphenylphosphino)pyridine. Synthesis and structure of dichlorodicarbonyl(2-(diphenylphosphino)pyridine)ruthenium(II)
Olmstead, Marilyn M.,Maisonnat, Andre,Farr, James P.,Balch, Alan L.
, p. 4060 - 4064 (2008/10/08)
The white complex Ru(Ph2Ppy)(CO)2Cl2 (Ph2Ppy = 2-(diphenylphosphino)pyridine) has been synthesized by the addition of chlorine to [Ru(CO)3Ph2Ppy]3 and has been characterized by a single-crystal X-ray structural analysis. The compound crystallizes in the orthorhombic space group P212121 with a = 8.375 (3) ?, b = 15.034 (4) ?, and c = 15.559 (3) ? at 140 K. The structure was refined by full-matrix least-squares methods to a final R of 0.030 for the 1367 reflections that had I > 3σ(I). The complex is six-coordinate with a four-membered chelate ring involving Ru-P and Ru-N bonding to the 2-(diphenylphosphino)pyridine ring. The following trans ligand pairs are present: PRuCl, NRuCO, and ClRuCO. The conversion of Ru(Ph2Ppy)(CO)2Cl2 into Ru(Ph2Ppy)2(CO)2Cl2 is described.
