The dianion complex [Fe 4 S 4 (SC 6 H 5 ) 4 ] 2− caused deoxygenation reaction of oxiran compounds to olefins in the presence of NaBH 4 . The reduced form [Fe 4 S 4 (SR) 4 ] 3− was suggested as an active reductant in this reaction. ... Present address: School of Pharmaceutical Sciences, Showa University, Hatanodai, Shinagawa-ku, Tokyo 142, Japan. ... Cookies are used by this site. To decline or learn more, visit our Cookies page.