Economical Oxygenation of Olefins and Sulfides Catalyzed by New Molybdenum(VI) Tridentate Schiff Base Complexes: Synthesis and Crystal Structure

Zeitschrift für anorganische und allgemeine Chemie, Early View (Online Version of Record published before inclusion in an issue), Article first published online: 7 MAY 2012
Economical Oxygenation of Olefins and Sulfides Catalyzed by New Molybdenum(VI) Tridentate Schiff Base Complexes: Synthesis and Crystal Structure
Dr. Abdolreza Rezaeifard 1,* Dr. Maasoumeh Jafarpour 1,* Heidar Raissi 1, Mahboubeh Alipour 1, Helen Stoeckli-Evans 2
rrezaeifard@birjand.ac.ir
rrezaeifard@gmail.com
1 Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179–414, Iran
2 Institute of Physics, University of Neuchâtel, Rue Emile-Argand 11, 2009 Neuchâtel, Switzerland
Abstract.
Describes the synthesis of new cis-dioxomolybdenum(VI) complexes (MoO₂Y^xCH₃OH) using MoO₂(acac)₂ and 2[(1-hydroxy-2-methylpropane-2-ylimino)methyl]phenol derivatives as tridentate ONO donor Schiff base ligands (H₂Y^x).
MoY¹ was crystallized in orthorhombic space group Pbca. The epoxidation of olefins using tert-butyl hydroperoxide and oxidation of sulfides to the sulfoxides by hydrogen peroxide were enhanced by the catalytic activity of title Mo^VI complexes with excellent selectivity. The high efficiency and relative stability of the catalysts was observed by turnover number and UV/Vis investigations.
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