777094-38-9Relevant academic research and scientific papers
Synthesis and characterization of {(diene)Rh[μ-OSi(OtBu) 3]}2, a precursor to silica-bound rhodium
Jarupatrakorn, Jonggol,Don Tilley
, p. 2808 - 2813 (2004)
Reaction of [(diene)RhCl]2 with 2 equiv of KOSi(O tBu)3 afforded {(diene)Rh[μ-OSi(OtBu) 3]}2, where diene = cod (1) and nbd (2). Multinuclear NMR studies reveal that 1 and 2 have a dimeric structure with bridging tris(tert-butoxy)siloxy ligands. These dimers are folded along the O...O axis. Complexes 1 and 2 reacted with PR3 (R = Me, Ph) to give monomeric products, the formulae of which depend on the amount of PR3 added ((diene)Rh[OSi(OtBu)3](PR3) and Rh[OSi(OtBu)3](PMe3)3). The behavior of 1 towards water and methanol is discussed. Thermogravimetric analyses (TGAs) of 1 and 2 reveal rather sharp conversions to rhodium-containing materials. Thermolysis of 1 in toluene at 180°C resulted in formation of a black precipitate, which contained rhodium nanoparticles with an average diameter of 22 nm, as determined by powder X-ray diffraction (PXRD), after calcination at 300°C for 1 h.
