Title : A theoretical study of the mechanisms of oxidation of ethylene by manganese oxo complexes.

Pub. Date : 2013 Oct 28

PMID : 23963205






3 Functional Relationships(s)
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1 The mechanisms of oxidation of ethylene by manganese-oxo complexes of the type MnO3L (L = O(-), Cl, CH3, OCH3, Cp, NPH3) have been explored on the singlet, doublet, triplet and quartet potential energy surfaces at the B3LYP/LACVP* level of theory and the results discussed and compared with those of the technetium and rhenium oxo complexes we reported earlier, thereby drawing group trends in the reactions of this important class of oxidation catalysts. ethylene neurexophilin 3 Homo sapiens
2 In the reactions of MnO3L (L = O(-), Cl(-), CH3, OCH3, Cp, NPH3) with ethylene, it was found that the formation of the dioxylate intermediate along the concerted [3 + 2] addition pathway on the singlet potential energy is favored kinetically and thermodynamically over its formation by a two-step process via the metallaoxetane by [2 + 2] addition. ethylene neurexophilin 3 Homo sapiens
3 The trends observed for the oxidation reactions of the Mn complexes with ethylene compare closely with those reported by us for the ReO3L and TcO3L (L = O(-), Cl, CH3, OCH3, Cp, NPH3) complexes, but there is far greater similarity between the Re and Tc complexes than between Mn and either of the other two. ethylene neurexophilin 3 Homo sapiens