کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1327993 | 1499948 | 2008 | 8 صفحه PDF | دانلود رایگان |
The dioxo molybdenum and tungsten complexes MoO2Cl2(OPPh2CH2OH)2 and WO2Cl2(OPPh2CH2OH)2 have been synthesized and characterized by FT-IR, 1H and 31P NMR. Their structures, as determined by single crystal X-ray diffraction analysis, reveal distorted octahedral geometries with cis terminal oxygen atoms, trans Cl ligands and that the hydroxymethyldiphenylphosphine oxide ligands coordinate through the oxygen atom bonded to the P atom. Both of the compounds are studied as catalysts for the epoxidation of cis-cyclooctene in the presence of hydrogen peroxide as a source of oxygen. Both complexes showed good activity and very high selectivity for the formation of cyclooctene oxide.
Dioxo molybdenum and tungsten complexes containing hydrophilic phosphine oxide ligands, have been synthesized and characterized by FT-IR, 1H, 31P NMR and by single crystal X-ray diffraction. The complexes showed good activity and very high selectivity for the formation of cyclooctene oxide in ethanol in the presence of hydrogen peroxide.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 693, Issues 8–9, 15 April 2008, Pages 1564–1571