1004520-87-9Relevant academic research and scientific papers
Dendronized scorpionate complexes of molybdenum in low and high oxidation states
Sanchez-Mendez, Alberto,Ortiz, Alba M.,De Jesus, Ernesto,Flores, Juan C.,Gomez-Sal, Pilar
, p. 5658 - 5669 (2008/09/17)
Tridentate (L3) and bidentate (L2) poly(pyrazolyl)methane ligands (Gn-dend)OCH2C(pz)3 (1-4) and (Gn-dend)CH(3,5-Me2pz)2 (pz = pyrazol-1-yl) have been used to synthesize the molybdenum(0) complexes [Mo(CO)3(L 3)] (G0-G3, 5-8), [Mo(CO)4(L2)] (G0-G1, 13-14), and [Mo(CO)3(NCMe)(L2)] (G0, 15), and the molybdenum(vi) complexes [MoCl2O2(L2)] (9-12). The G0-G3 prefixes represent the generation of poly(aryl ether) dendrons in which the metal complexes are embedded. The molecular structures of compounds 13 and 15 have been determined by X-ray diffraction studies and the hydrodynamic radii of tricarbonyl complexes 5-8 calculated by diffusion-ordered NMR spectroscopy (DOSY). Molybdenum(vi) compounds 9-12 have also been evaluated as catalysts for olefin epoxidation, showing comparable but inferior performances than ligand-free MoCl2O2, probably because of the labile coordination of L2. The Royal Society of Chemistry.
