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- W1971451752 abstract "Abstract The new complexes [MoI 2 (CO) 3 ( L 1 )] ( 1 ) and [MoI 2 (CO) 3 ( L 2 )] ( 2 ) were prepared from reaction of [MoI 2 (CO) 3 (NCMe) 2 ] with the ligands 2-(2′-hydroxyphenyl)imidazoline ( L 1 ), and 2-(2′-hydroxyphenyl)benzimidazole ( L 2 ). These complexes were immobilized in MCM-41 and in silica gel, by grafting (3-chloropropyl)trimethylsilane on the surface of the materials and allowing it to react with [MoI 2 (CO) 3 ( L 1 )] ( 1 ) or [MoI 2 (CO) 3 ( L 2 )] ( 2 ). All the molybdenum derivatives were characterized by NMR and FTIR spectroscopies, which showed coordination of L 1 and L 2 in neutral form. The structure of the MCM materials was analyzed by powder X-ray diffraction and nitrogen adsorption isotherms. The catalytic activity of the complexes and materials was tested in several substrates ( cis -cyclooctene, styrene, 1-octene, R -(+)limonene, geraniol, cis -hex-3-en-1-ol and trans -hex-2-en-1-ol), using tert -butylhydroperoxide (TBHP) as oxidant. Complexes 1 and 2 were in general the more active catalysts and 100% selective towards the epoxide of cis -cyclooctene. Complex 1 immobilized in silica ( Si-Pr-1 ) was the best material, showing higher conversion than 1 in the oxidation of R -(+)limonene, with comparable selectivity towards the ring epoxide." @default.
- W1971451752 created "2016-06-24" @default.
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- W1971451752 date "2014-02-01" @default.
- W1971451752 modified "2023-09-27" @default.
- W1971451752 title "New Mo(II) complexes in MCM-41 and silica: Synthesis and catalysis" @default.
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- W1971451752 doi "https://doi.org/10.1016/j.jorganchem.2013.07.081" @default.
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