The arsenite bromides are mixed anion compounds containing both arsenite and bromide ions. Similar compounds include arsenate bromides,[1] arsenite chlorides,[1] antimonite bromides, antimonite chlorides,[2] and ...
They are in the category of halide oxidoarsenates(III)
List
| chem | mw | crystal system | space group | unit cell Å | volume | density | comment | references | |
|---|---|---|---|---|---|---|---|---|---|
| Ermakovite | (NH4)(As2O3)2Br | hexagonal | P6/mmm | a = 5.271 c = 9.157 Z = 1 | 220.3 | 3.64 | uniaxial (–), ω = 1.960 ɛ = 1.716 at 589 nm | [3] | |
| In4(As2O5)(As3O7)Br3 | triclinic | 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 | [4] | ||
| La3OBr[AsO3]2 | tetragonal | P42/mnm | a = 13.043 c = 5.6127 Z=4 | 954.8 | 5.27 | colourless | [1] | ||
| Ce3OBr[AsO3]2 | [5] | ||||||||
| Nd3OBr[AsO3]2 | [5] | ||||||||
| Sm3OBr[AsO3]2 | [5] | ||||||||
| Gd3OBr[AsO3]2 | [5] | ||||||||
| Tb3OBr[AsO3]2 | [5] | ||||||||
| Tm3Br2[As2O5][AsO3] | triclinic | P1 | a = 5.3496 b = 8.6926 c = 10.8184 α = 90.723° β = 94.792° γ = 90.119° Z=2 | 6.760 | pale yellow | [5] | |||
| Beudantite | PbFe3(OH)6SO4AsO4 | trigonal | R3m | a = 7.32, c = 17.02 Z=3 | 789.79 | 4.48 | Uniaxial (-) nω = 1.957 nε = 1.943 Birefringence: 0.014 | [6] | |
| 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 | [7] |
References
- 1 2 3 Yahia, Hamdi Ben; Pöttgen, Rainer; Rodewald, Ute Ch. (2010-10-01). "Crystal Structure of La 3 OBr[AsO 3 ] 2". Zeitschrift für Naturforschung B. 65 (10): 1289–1292. doi:10.1515/znb-2010-1018. ISSN 1865-7117. S2CID 196918204.
- ↑ Locke, Ralf J. C.; Goerigk, Felix C.; Schäfer, Martin J.; Höppe, Henning A.; Schleid, Thomas (2022). "Synthesis, crystal structures and spectroscopic properties of pure YSb 2 O 4 Br and YSb 2 O 4 Cl as well as Eu 3+ - and Tb 3+ -doped samples". RSC Advances. 12 (2): 640–647. doi:10.1039/D1RA08382A. ISSN 2046-2069. PMC 8693579. PMID 35425089.
- ↑ Karpenko, Vladimir Yu.; Pautov, Leonid A.; Siidra, Oleg I.; Mirakov, Mirak A.; Zaitsev, Anatoly N.; Plechov, Pavel Yu.; Makhmadsharif, Saimudasir (February 2023). "Ermakovite (NH 4 )(As 2 O 3 ) 2 Br, a new exhalative arsenite bromide mineral from the Fan-Yagnob coal deposit, Tajikistan". Mineralogical Magazine. 87 (1): 69–78. Bibcode:2023MinM...87...69K. doi:10.1180/mgm.2022.116. ISSN 0026-461X. S2CID 252906686.
- ↑ 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. Bibcode:2021AmMin.106..633P. doi:10.2138/am-2020-7611. S2CID 226659801.
- 1 2 3 4 5 6 Goerigk, Felix C.; Schander, Svetlana; Wickleder, Mathias S.; Schleid, Thomas (2020-07-15). "The Triclinic Lanthanoid(III) Halide Oxidoarsenates(III) Sm 3 Cl 2 [As 2 O 5 ][AsO 3 ] and Tm 3 Br 2 [As 2 O 5 ][AsO 3 ]". Zeitschrift für anorganische und allgemeine Chemie. 646 (13): 985–991. doi:10.1002/zaac.201900360. ISSN 0044-2313. S2CID 225602969.
- ↑ "Beudantite". www.mindat.org. Retrieved 2022-05-25.
- ↑ "Gallobeudantite". www.mindat.org. Retrieved 2022-05-24.
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