The preparation, variable-temperature nuclear magnetic resonance spectra, and behaviour under reflux conditions of [Os3(CO)10(µ-ER)2](E = S, R = Me, Ph, or CH2Ph; E = Se, R = Ph)

Abstract

The cluster [Os₃(CO)₁₁(NCMe)] reacts with the compounds R₂E₂(E = S, R = Me, Ph, or CH₂Ph; E = Se, R = Ph) to give the clusters [Os₃(CO)₁₀(µ-ER)₂] which have been fully characterised on the basis of their spectroscopic properties. In each case, only one of the three possible isomers of these compounds is produced. On heating, [Os₃(CO)₁₀(µ-SMe)₂] converts to a second isomeric form which is isostructural with the known compound [Os₃(CO)₁₀(µ-OMe)₂], whereas the compounds [Os₃(CO)₁₀(µ-ER)₂](E = S, R = Ph or CH₂Ph; E = Se, R = Ph) give small yields of [Os₃(CO)₉E₂](E = S or Se) and [Os₃(CO)₉(SR)₂](E = S or Se, R = Ph).