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).