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  • Ionic conductivity, infrared and Raman spectroscopic studies of 1-methyl-3-propylimidazolium iodide ionic liquid with added iodine
    Jerman, Ivan, kemija, 1973- ...
    Polyiodides (Ix -, x = 3 and 5) and 2I- cI2 adducts were established from the Raman spectra study of 1-methyl-3-propylimidazolium iodide (MPIm+Ix -; 1 . x .5) ionic liquids containing various amounts ... of iodine (0 mol . I2 . 2 mol). The existence of I3 - and 2I-...I2 was established for 1 . x . 2.5, symmetric I3 - ions for x = 3, while linear and discrete I5 - was substantiated for 3 . x . 5. The presence of polyiodide species in MPIm+Ix - (1 . x . 5) was correlated with an enhanced ionic conductivity, attributed to the established relay-type Grotthus mechanism. Two-step conductivity increase was also reflected in decrease of the hydrogen bond interactions between the C-H ring groups and polyiodides. While in the concentration range 1 . x . 3 (triiodidesand tetraiodides) IR bands changed only slightly in intensity, in the concentration range x > 3 the C-H stretching bands (3040 . 3170 cm-1) split and the new band at 1585 cm-1 appeared in the IR spectra beside the already existing Im+ ring stretching mode at 1566 cm-1
    Vir: Electrochimica Acta. - ISSN 0013-4686 (Vol. 53, no. 5, 2008, str. 2281-2288)
    Vrsta gradiva - članek, sestavni del
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 3813402

vir: Electrochimica Acta. - ISSN 0013-4686 (Vol. 53, no. 5, 2008, str. 2281-2288)
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