Abstract
Methylated and inorganic germanium compounds have been separated by liquid-liquid extraction from aqueous hydrohalogenic acid (HX) solution into carbon tetrachloride. The germanium compounds dissolve in water as their hydroxides ((CH3)nGe(OH)4.n: n = 0, 1, 2 or 3), and form their halide complexes ((CH3)nGeX4.n) in HX solution. Large difference in the extraction constants and stability constants of (CH3)nGeX4.n are ascribed to the inductive effect of the methyl groups which reduces the stability of the bond between the germanium atom (hard acid) and a hydroxide ion (hard base).
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References
B. J. Aylett, Organometallic Compounds, 4th ed., Vol. 1, Part 2, Chapter 3, Chapman and Hall, London, 1979.
R. C. Poller, in Comprehensive Organic Chemistry, Vol. 3, ed. D. N. Jones, pp. 1061–1073, Pergamon Press, Oxford, 1979.
Y. Sohrin, Anal. Chem., 63, 811 (1991).
W. J. Hamer and Y-C Wu, J. Phys. Chem. Ref Data, 1, 1047 (1972).
O. Söhnel and P. Novotny, Physical Sciences Data 22: Densities of Aqueous Solutions of inorganic Substances, Elsevier, Amsterdam, 1985.
R. L. Benoit and P. Clerc, J. Phys. Chem., 65, 676 (1961).
E. G. Rochow and A. L. Allred, J. Am. Chem. Soc, 77, 4489 (1955).
R. S. Tobias and S. Hutcheson, J. Organomet. Chem., 6, 535 (1966).
G. E. Walrafen, J. Chem. Phys., 42, 485 (1965).
Y. Sohrin, Bull. Chem. Soc. Jpn., submitted.
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Sohrin, Y., Kihara, S. & Matsui, M. Liquid-Liquid Extraction of Methylated and Inorganic Germanium as the Halide Complex. ANAL. SCI. 7 (Suppl 1), 17–20 (1991). https://doi.org/10.2116/analsci.7.Supple_17
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DOI: https://doi.org/10.2116/analsci.7.Supple_17