Gas-Phase Ion Chemistry of Siloxide and Silamide Ions by Using the Flowing Afterglow. Unusual Rearrangements Involving SiO and SiS Bond Formation

Abstract

Siloxide ions undergo O/S exchange reactions with suitable sulfur-containing neutrals, e.g. H₃SiO-+CS₂ → H₃SiS-+COS. Silamide ions similarly undergo NR/O and NR/S exchange reactions together with nucleophilic displacement reactions, e.g.

Me₃SiNMe + CO₂

→ Me₃SiO^-+MeNCO

→

No simple correlation between rate and mechanism is observed for all the studied reactions.