Preparation of alkyl-substituted partial trimethylsilyl silicates from olivine

Kazuyuki Kuroda, Tetsuhiro Koike, Chuzo Kato

    Research output: Contribution to journalArticle

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    Abstract

    The direct trimethylsilylation reaction of olivine has yielded partial trimethylsilyl derivatives of ortho- and di-silicates whose unsilylated silanol groups have been esterified with the alcohol used as the organic solvent in the trimethylsilylating reagent. Gas chromatographic-mass spectroscopic measurements indicate the presence of the tri-, di-, and mono-alkyl-substituted trimethylsilyl derivatives of monosilicic acid [SiO4(SiMe3)4-nRn; n = 1-3] in addition to the fully silylated monomeric derivative [SiO4(SiMe3)4]. Dimeric derivatives have also been detected which contain both the completely trimethylsilylated derivative [Si2O7(SiMe3)6] and alcohol-esterified derivatives [Si2O7(SiMe3)6-nRn; n = 1-4]. The ratio of the esterified products varies with the volume of alcohol or water in the silylating reagent as well as with the reaction time.

    Original languageEnglish
    Pages (from-to)1957-1960
    Number of pages4
    JournalJournal of the Chemical Society, Dalton Transactions
    Issue number9
    DOIs
    Publication statusPublished - 1981

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    Silicates
    Derivatives
    Alcohols
    Organic solvents
    olivine
    Gases
    Acids
    Water

    ASJC Scopus subject areas

    • Chemistry(all)

    Cite this

    Preparation of alkyl-substituted partial trimethylsilyl silicates from olivine. / Kuroda, Kazuyuki; Koike, Tetsuhiro; Kato, Chuzo.

    In: Journal of the Chemical Society, Dalton Transactions, No. 9, 1981, p. 1957-1960.

    Research output: Contribution to journalArticle

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    abstract = "The direct trimethylsilylation reaction of olivine has yielded partial trimethylsilyl derivatives of ortho- and di-silicates whose unsilylated silanol groups have been esterified with the alcohol used as the organic solvent in the trimethylsilylating reagent. Gas chromatographic-mass spectroscopic measurements indicate the presence of the tri-, di-, and mono-alkyl-substituted trimethylsilyl derivatives of monosilicic acid [SiO4(SiMe3)4-nRn; n = 1-3] in addition to the fully silylated monomeric derivative [SiO4(SiMe3)4]. Dimeric derivatives have also been detected which contain both the completely trimethylsilylated derivative [Si2O7(SiMe3)6] and alcohol-esterified derivatives [Si2O7(SiMe3)6-nRn; n = 1-4]. The ratio of the esterified products varies with the volume of alcohol or water in the silylating reagent as well as with the reaction time.",
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    N2 - The direct trimethylsilylation reaction of olivine has yielded partial trimethylsilyl derivatives of ortho- and di-silicates whose unsilylated silanol groups have been esterified with the alcohol used as the organic solvent in the trimethylsilylating reagent. Gas chromatographic-mass spectroscopic measurements indicate the presence of the tri-, di-, and mono-alkyl-substituted trimethylsilyl derivatives of monosilicic acid [SiO4(SiMe3)4-nRn; n = 1-3] in addition to the fully silylated monomeric derivative [SiO4(SiMe3)4]. Dimeric derivatives have also been detected which contain both the completely trimethylsilylated derivative [Si2O7(SiMe3)6] and alcohol-esterified derivatives [Si2O7(SiMe3)6-nRn; n = 1-4]. The ratio of the esterified products varies with the volume of alcohol or water in the silylating reagent as well as with the reaction time.

    AB - The direct trimethylsilylation reaction of olivine has yielded partial trimethylsilyl derivatives of ortho- and di-silicates whose unsilylated silanol groups have been esterified with the alcohol used as the organic solvent in the trimethylsilylating reagent. Gas chromatographic-mass spectroscopic measurements indicate the presence of the tri-, di-, and mono-alkyl-substituted trimethylsilyl derivatives of monosilicic acid [SiO4(SiMe3)4-nRn; n = 1-3] in addition to the fully silylated monomeric derivative [SiO4(SiMe3)4]. Dimeric derivatives have also been detected which contain both the completely trimethylsilylated derivative [Si2O7(SiMe3)6] and alcohol-esterified derivatives [Si2O7(SiMe3)6-nRn; n = 1-4]. The ratio of the esterified products varies with the volume of alcohol or water in the silylating reagent as well as with the reaction time.

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