Polymerization Reactions in an Al(OBuS)3-(COOH)2 System

Yoshiyuki Sugahara, Itaru Takaya, Jun Chiba, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Reactions in an Al(OBuS)3-(COOH)2 (OA)-tetrahydrofuran (THF)/(CD3)2SO (DMSO-d6) system (Al(OBuS)3:THF:DMSO-d6:OA = 1:5:5:x, x = 0.01-3) were studied, without the addition of water and the process was monitored by NMR. When x ≤ 0.3, homogeneous solutions were obtained, whereas white precipitates formed with x ≥ 0.7. The formation of sec-butyl alcohol was evident with x ≥ 0.6, indicating that oxalate groups coordinate to aluminum to release sec-butyl alcohol. 13C NMR spectra of the solutions after 1 day suggest the presence of polymeric species if 0.03 ≤ x ≤ 0.6. The addition of a small amount of water resulted in the formation of a white precipitate (Al(OBuS)3:THF:DMSO-d6:OA:H2O = 1:5:5:0.3:y, y = 0.03-0.3), indicating that water, possibly formed by esterification in the Al(OBuS)3-OA-THF/DMSO-d6 system, does not take a major role in the present system.

    Original languageEnglish
    Pages (from-to)95-99
    Number of pages5
    JournalJournal of Sol-Gel Science and Technology
    Volume8
    Issue number1-3
    Publication statusPublished - 1997

    Fingerprint

    tetrahydrofuran
    Dimethyl Sulfoxide
    polymerization
    Polymerization
    Precipitates
    Alcohols
    Nuclear magnetic resonance
    Water
    precipitates
    alcohols
    Esterification
    water
    nuclear magnetic resonance
    Oxalates
    oxalates
    Aluminum
    aluminum
    2-butanol

    Keywords

    • C NMR spectroscopy
    • Al NMR spectroscopy
    • Aluminum sec-butoxide
    • Oxalic acid
    • Polymerization

    ASJC Scopus subject areas

    • Ceramics and Composites

    Cite this

    Polymerization Reactions in an Al(OBuS)3-(COOH)2 System. / Sugahara, Yoshiyuki; Takaya, Itaru; Chiba, Jun; Kuroda, Kazuyuki.

    In: Journal of Sol-Gel Science and Technology, Vol. 8, No. 1-3, 1997, p. 95-99.

    Research output: Contribution to journalArticle

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