The redox-controlled driven oscillatory template exchange between phosphate (P) and vanadate (V) anions enclosed in an {X 2 M 18 } cluster is reported. Extensive investigations using a range of techniques, including correlated ESI-MS, EPR, and UV−vis as a function of reaction time, showed that six complete oscillations interconverting the capsule species present in solution from {P 2 M 18 } to {V 2 M 18 } were possible, provided that a sufficient concentration of the TEA reducing agent was present in solution.
An oscillatory template exchange between phosphate and vanadate anions in an aqueous mixture of (NH4)6P2Mo18O62, triethanolamine, and NH4VO3 (80—90 °C) is monitored by ESI‐MS, EPR, and UV/VIS spectroscopy.
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