NGHIÊN CỨU PHỔ HỒNG NGOẠI CỦA PHẢN ỨNG GIỮA DẪN XUẤT PYRIDIN VỚI IOD TRÊN NỀN POLYETYLEN

Translated title of the contribution: Spectroscopic investigation of the reactions of pyridine derivatives with iodine in a polyethylene matrix

Thu Huong Nguyen, Thi Thanh Mai Nguyen, Jens Spanget-Larsen

    Research output: Contribution to journalJournal articleResearch

    Abstract

    The reaction of 4-methylpyridine and 4-tert-butylpyridine with iodine was studied by FTIR spectroscopy. The reaction was studied in liquid non-polar solvents (CS2, CCl4) and in low density polyethylene. Unlike the situation in the liquid solvents, the main products of the reaction between the pyridine derivatives and iodine in the polyethylene matrix are ionic species. Probably the cavities in the stretched polymer catalyse the ionic reaction. The results of the FTIR spectroscopic study indicate the presence of bis(4-tert-butylpyridinium)iodonium polyiodide. Theoretical calculations using the density function B3LYP/DGDZVP give results consistent with the proposed structure. The reaction of 4-methylpyridine with iodine reveals a complex mechanism of reaction that produces many forms of products (cations, oligomers).
    Original languageVietnamese
    JournalVietnam Journal of Chemistry
    Volume49
    Issue number2A
    Pages (from-to)170-175
    Number of pages6
    ISSN0866-7174
    Publication statusPublished - 15 Aug 2011

    Keywords

    • p-methylpyridine
    • p-tert-bytulpyridine
    • iodine
    • polyethylene
    • FTIR spectroscopy
    • N-iodopyridinium polyiodide
    • bis(pyridine)iodonium polyiodode

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