AI Article Synopsis
- The rhenium(V) oxo complex [(DAAm)Re(O)(CH(3))] activates carbon monoxide (CO), leading to the formation of a rhenium(III) acetate complex [(DAAm)Re(O(2)CCH(3))(CO)].
- A novel intermediate, an oxorhenium(V) acyl complex [(DAAm)Re(O)(C(O)CH(3))], was isolated and studied for its reactivity with CO.
- The proposed mechanism involves CO activation by the metal complex, resulting in bond formation and the eventual generation of the acetate complex through ligand migration.
Article Abstract
Activation of CO by the rhenium(V) oxo complex [(DAAm)Re(O)(CH(3))] (1) [DAAm = N,N-bis(2-arylaminoethyl)methylamine; aryl = C(6)F(5), Mes] resulted in the isolation of the rhenium(III) acetate complex [(DAAm)Re(O(2)CCH(3))(CO)] (3). The mechanistic details of this reaction were explored experimentally. The novel oxorhenium(V) acyl intermediate [(DAAm)Re(O)(C(O)CH(3))] (2) was isolated, and its reactivity with CO was investigated. An unprecedented mechanism is proposed: CO is activated by the metal oxo complex 1 and inserted into the rhenium-methyl bond to yield acyl complex 2, after which subsequent migration of the acyl ligand to the metal oxo ligand yields acetate complex 3. X-ray crystal structures of 2 and 3 are reported.
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| http://dx.doi.org/10.1021/ja205477w | DOI Listing |
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