One-electron cyclic voltammetric reduction potentials of some molybdo-oxaziridines
The electrochemistry of [MoO(S2CNEt2)2(ONC6H4X-p)](X = CH3, H, or Cl) has been examined voltammetrically. A one-electron cyclic voltammetric reduction peak (Epc) observed near –1.2 V (versus a saturated calomel electrode) is assigned to the process MoVI→ MoV. The MoV species is too unstable for electrochemical detection. The Epc values correlate linearly with Hammett parameters of the substituent X. The reduction peak of [MoO2(S2CNEt2)2] occurs at –1.03 V. The oxaziridine group is found to be a better donor than the oxo-group.