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Synthesis and crystal structures of anhydrous lithium and ammonium hypophosphites

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Abstract

Conditions of synthesis (temperature, precursors) have been selected to grow crystals of anhydrous lithium and ammonium hypophosphites. The crystal structure of LiH2PO2 has been determined. Cell parameters and atomic positions in (NH4)H2PO2 at room temperature and at 100 K have been refined. By their oxygen atoms the hypophosphite anions serve to bridge the four cations. Each oxygen atom is bonded to two cations, creating puckered layers parallel to the (001) planes. The structures show much similarity in the general arrangement, but differ in the type of the tetrahedral cation-anion bonds. In LiH2PO2, the Li-O bond is ionic (1.933(4) Å); in (NH4)H2PO2, N-H...O is a hydrogen bond (2.846(1) Å).

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Authors and Affiliations

  1. A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk

    M. I. Naumova, N. V. Kuratieva, D. Yu. Naumov & N. V. Podberezskaya

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  1. M. I. Naumova
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  2. N. V. Kuratieva
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  3. D. Yu. Naumov
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  4. N. V. Podberezskaya
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Original Russian Text Copyright © 2004 by M. I. Naumova, N. V. Kuratieva, D. Yu. Naumov, and N. V. Podberezskaya

Translated from Zhurnal Strukturnoi Khimii, Vol. 45, No. 3, pp. 491–496, May–June 2004.

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Naumova, M.I., Kuratieva, N.V., Naumov, D.Y. et al. Synthesis and crystal structures of anhydrous lithium and ammonium hypophosphites. J Struct Chem 45, 465–470 (2004). https://doi.org/10.1007/s10947-005-0014-9

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