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Arsenite bromides

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This is an old revision of this page, as edited by Graeme Bartlett (talk | contribs) at 08:18, 28 May 2022 (Graeme Bartlett moved page User:Graeme Bartlett/arsenate bromide to User:Graeme Bartlett/arsenite bromide without leaving a redirect: not -ate As(III)). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The arsenite chlorides are mixed anion compounds containing both arsenite and bromide ions.

List

chem mw crystal system space group unit cell volume density comment references
In4(As2O5)(As3O7)Br3 P1_ a=7.998 b=10.532 c=11.952 α=70.92° β=79.62° γ=80.27° Z=2 928 4.527 stable to 530°C [1]
Beudantite PbFe3(OH)6SO4AsO4 trigonal R3_m a = 7.32, c = 17.02 Z=3 789.79 4.48 Uniaxial (-) nω = 1.957 nε = 1.943 Birefringence: 0.014 [2]
Gallobeudantite PbGa3(AsO4)(SO4)(OH)6 trigonal R3m a = 7.225, c = 17.03 Z=3 769.88 4.87 uniaxial (–) nω = 1.763 nε = 1.750 [3]

References

  1. ^ Pekov, Igor V.; Britvin, Sergey N.; Krivovichev, Sergey V.; Yapaskurt, Vasiliy O.; Vigasina, Marina F.; Turchkova, Anna G.; Sidorov, Evgeny G. (1 April 2021). "Vasilseverginite, Cu9O4(AsO4)2(SO4)2, a new fumarolic mineral with a hybrid structure containing novel anion-centered tetrahedral structural units". American Mineralogist. 106 (4): 633–640. doi:10.2138/am-2020-7611.
  2. ^ "Beudantite". www.mindat.org. Retrieved 2022-05-25.
  3. ^ "Gallobeudantite". www.mindat.org. Retrieved 2022-05-24.
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