Journal
JOURNAL OF COORDINATION CHEMISTRY
Volume 67, Issue 11, Pages 1863-1872Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00958972.2014.928287
Keywords
Molybdenum complex; Epoxidation; Sulfoxidation
Categories
Funding
- COST Action [CM1003]
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The oxomolybdenum(VI) complex [MoOCl(L)] with a tetradentate glycine bisphenol ligand (H3L) was prepared by reaction of [MoO2Cl2(DMSO)(2)] with a ligand precursor in hot toluene. The product was isolated in moderate yield as separable cis and trans isomers along with the third minor component, [MoO2(HL)]. The solid-state structure of trans-[MoOCl(L)] was determined by X-ray diffraction. The ligand has tetradentate coordination through three oxygens and one nitrogen, which is located trans to the terminal oxo whereas the sixth coordination site is occupied by a chloride. Both cis and trans isomers of [MoOCl(L)] are active catalysts for epoxidation of cis-cyclooctene and sulfoxidation of tolyl methyl sulfide. The cis isomer gave higher activity in epoxidation and sulfoxidation reactions at room temperature than the trans isomer but they performed identically at 50 degrees C.
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