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DOI: 10.1039/A607633E (Paper) Reference Section for: J. Mater. Chem., 1997, 7, 865-872

Synthesis and characterization of bis(trialkoxysilymethyl)arenes from related bis(trichlorosilylmethyl)arenes. Comparisons between some organosilicate xerogel materials derived from both

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Stuart W. Carr, Majid Motevalli, Duan Li Ou and Alice C. Sullivan

Abstract

A series of bis(trialkoxysilylmethyl)aryl compounds1–17 {[(RO)3SiCH2 ]2Ar, R=Me, Et, Pr , Bu, Ar=1,4-C6H4 ; R=Et, Pr, Bu, Ar=1,4-C6H2Me2-2,6; R=Et, Pr, Bu, Ar=1,4-C6Me4-2,3,5,6 ; R=Et, Pr, Bu, Ar=1,3-C6H4 ; R=Bu, Ar=1,2-C6H4 ; R=Et, Pr, Bu, Ar=9,10-C14H8} prepared from the related bis(trichlorosilylmethyl)aryl compounds and characterised by 1H, 13C and 29Si NMR and IR spectroscopy, and high resolution mass spectrometry. The X-ray crystal structures of two of the bis(trichlorosilylmethyl)aryl precursor compounds are reported. Organosilicate xerogels prepared from the precursors 2,7 and 12 are discussed. These have been studied by a combination of solid state NMR spectroscopy, scanning electron microscopy (one case) and nitrogen sorption porosimetry and their properties compared with those of xerogels derived from related bis(trichlorosilylmethyl)arenes.

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