ABSTRACT
Selective conversion of various oxiranes to the corresponding thiiranes in the presence of ammonium thiocyanate and thiourea can be effectively carried out by ammonium decatungestocerate(IV) icosahydrate, (NH4)8[CeW10O36]ċ20H2O.
ACKNOWLEDGMENT
We thank the financial support for this work by the Isfahan University Research Council and Prof. I. Mohammadpoor-Baltork for his expert assistance.