Vibrational spectra of metal cluster complexes containing the µ3-bridging sulphur ligand. A possible model for sulphur atoms on metal surfaces

Abstract

Vibrational frequencies of the metal–sulphur stretching modes for a number of metal cluster complexes containing the µ₃-bridging sulphur atom have been determined and approximate normal-coordinate analyses have been made of selected cluster molecules of this type. A comparison of the sites occupied by the sulphur atom in metal cluster complexes and on metal surfaces reveals a close structural relationship between these environments; this is likely to be manifest in a similarity of the vibrational frequencies associated with the (µ₃-S)M₃ unit in the two types of system.