Interactions of trialkoxysilanes with some organic solvents

Authors:

• Bogdan Marciniec,
• Hanna Gulińska

Abstract

Changes in proton chemical shift δ (downfield) for the hydrogen bonded directly to the silicon atom of the trialkoxysilanes (RO)₃SiH (where R CH₃, C₂H₅, C₃H₇, iso-C₃H₇) in several, mainly aromatic, solvents as well as changes in δ(CH) of the aromatic ring (downfield), δ (CH) of chloroform (downfield) and in δ(CH) of the alkoxy groups (in aromatic solvent upfield, in CHCl₃ downfield) were observed for the trialkoxysilane-aromatic (and CHCl₃) solvent systems. The results obtained are interpreted mainly in terms of interaction of SiOC bonds in trialkoxysilane with organic solvent molecules, particularly for n-electrons of the alkoxy groups, with the benzene ring functioning as a π-electron acceptor (and with protonic hydrogen of chloroform). © 1982.