Arsenite bromides - Misplaced Pages

Compounds with arsenate and bromide ions

The arsenite bromides are mixed anion compounds containing both arsenite and bromide ions. Similar compounds include arsenate bromides, arsenite chlorides, antimonite bromides, antimonite chlorides, and ...

They are in the category of halide oxidoarsenates(III)

List

	chem	crystal system	space group	unit cell Å	volume	density	comment
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
	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
	La₃OBr₂	tetragonal	P4₂/mnm	a = 13.043 c = 5.6127 Z=4	954.8	5.27	colourless
	Ce₃OBr₂
	Nd₃OBr₂
	Sm₃OBr₂
	Gd₃OBr₂
	Tb₃OBr₂
	Tm₃Br₂	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
Beudantite	PbFe₃(OH)₆SO₄AsO₄	trigonal	R3m	a = 7.32, c = 17.02 Z=3	789.79	4.48	Uniaxial (-) n_ω = 1.957 n_ε = 1.943 Birefringence: 0.014
Gallobeudantite	PbGa₃(AsO₄)(SO₄)(OH)₆	trigonal	R3m	a = 7.225, c = 17.03 Z=3	769.88	4.87	uniaxial (–) n_ω = 1.763 n_ε = 1.750

References

^ 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.
^ 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.