Contributions to the chemistry of silicon-sulfur compounds. Part 59

The contribution of vacant orbitals of the silicon atom to the electronic structure of silanethiols and their corresponding deprotonated species have been studied by means of ab initio and EHT MO methods. The results have been compared with those of the corresponding carbon compounds to clarify the peculiar properties of the silanethiols. The deprotonation process does strengthen the Si-S bond, but this effect is not considered to be due to the SSi dative bonding as suggested by Salinger and West.Dedicated to Professor Hans Georg von Schnering on the occasion of his sixtieth birthday. For Part 58 see ref. [1].