Elemental silicon and solid SiO give the same products as SiO2 upon reaction with alkali-metal glycolates

Abstract

Treatment of Si, SiO and SiO₂ with lithium or sodium ethylene glycolate gave five-co-ordinate silicon ethylene glycolate derivatives in quantitative yield: Li[Si(OCH₂CH₂O)₂OCH₂CH₂OH] in the reactions with lithium glycolate and dimeric Na₂[Si₂(OCH₂CH₂O)₅] with sodium glycolate; reaction of the latter compound with hot methanol resulted in an exchange of the monodentate glycolate group and the formation of Na[Si(OCH₂CH₂O)₂OMe].