M Venu Chary (2009) Potassium Dodecatungstocobaltate
Trihydrate: K5CoW12O40·3H2O Synlett 14. 2371–2372 Abstract: Heteropolyoxometalates as stable inorganic porphyrins
have attracted much attention in the last two decades. The
versatility of these catalysts has been demonstrated in various
organic transformations due to their weak superacidicity,
redox properties, low toxicity, stability, inexpensiveness,
water tolerance and reusability.1 Potassium
dodecatungstocobaltate (PDTC) is apparently a perfect
outer-sphere one-electron oxidant, due to the presence of
a sheath of chemically inert oxygen atoms, which protects
the central ion from undesired inner-sphere substitution
reactions.2 For this reason, electron transfer with PDTC
typically leads to selective reactions and clean chemistry.
Notes:
