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Mutual conversions in the alumohydrides of lithium, sodium, and potassium


  1. 1.

    Sodium and potassium alumohydrides are readily formed by the action of sodium and potassium hydrides on lithium alumohydride, and potassium alumohydride is formed by the action of potassium hydride on sodium alumohydride.

  2. 2.

    Lithium alumohydride is obtained by the action of lithium chloride and bromide on sodium and potassium alumohydrides.

  3. 3.

    The reaction of the complexes MeAlRnH(4−n), where Me=Li, Na;Risalkyl; n=2, 3, 4 with sodium and potassium hydrides proceeds according to the scheme MeAlRnH(4−n) + Me'H -Me'AlRnH(4−n) + MeH

  4. 4.

    Complexes of the type MeAlRnH(in4−n), where Me=K, Na; R is alkyl; n=2, 3, 4 can be converted to the corresponding lithium analogs by reaction with lithium chloride or bromide.

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Literature cited

  1. 1.

    L. I. Zakharkin and V. V. Gavrilenko, Izv. AN SSSR, Otd. khim. n. 2246 (1961).

  2. 2.

    H. Clasen, Angew. Chem.73, 322 (1961).

  3. 3.

    Handbook of Chemistry and Physics, 33 ed., Cleveland, Ohio.

  4. 4.

    W. D. Davis, L. S. Mason, and G. Stegeman, J. Amer. Chem. Soc.71, 2775 (1949).

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Zakharkin, L.I., Gavrilenko, V.V. Mutual conversions in the alumohydrides of lithium, sodium, and potassium. Russ Chem Bull 11, 1076–1078 (1962).

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  • Sodium
  • Chloride
  • Potassium
  • Lithium
  • Bromide