Carbon–hydrogen cleavage versus ring opening in the oxidative addition reactions of furan, thiophene, selenophene and tellurophene with [Os3(CO)10(MeCN)2]

Abstract

Reactions of the cluster [Os₃(CO)₁₀(MeCN)₂] with furan, thiophene, selenophene or tellurophene lead to compounds of corresponding stoichiometry, [Os₃(CO)₁₀(C₄H₄E)](E = O, S, Se or Te), but, whereas for E = O or S these are furyl or thienyl hydrido compounds formed by C–H cleavage, the Se and Te clusters are formed by E–C cleavage (X-ray structure for the E = Se cluster).