The Structure of Gallium in Strongly Alkaline, Highly Concentrated Gallate Solutions—a Raman and 71Ga-NMR Spectroscopic Study

  title={The Structure of Gallium in Strongly Alkaline, Highly Concentrated Gallate Solutions—a Raman and 71Ga-NMR Spectroscopic Study},
  author={P{\'a}l Sipos and T{\"u}nde Megyes and Ott{\'o} Berkesi},
  journal={Journal of Solution Chemistry},
Highly concentrated alkaline gallate solutions with 0.23≤[Ga(III)]T≤2.32 mol⋅dm−3 and 1≤[NaOH]T≤15 mol⋅dm−3 have been prepared and investigated by Raman and 71Ga-NMR spectroscopy. Both the Raman and 71Ga-NMR spectra are consistent with the presence of only one Ga-bearing species in these solutions, the tetrahedral hydroxocomplex, Ga(OH)4−. Contact ion pairs were found to cause variations in the Raman and 71Ga-NMR parameters that are at the edge of detectability. Other species that have been… Expand
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