Arsenide bromides or bromide arsenides are compounds containing anions composed of bromide (Br−) and arsenide (As3−). They can be considered as mixed anion compounds. They are in the category of pnictidehalides. Related compounds include the arsenide chlorides, arsenide iodides, phosphide bromides, and antimonide bromides.
List formulasystemspace groupunit cell Åvolumedensitycommentref(Ca2−x□x)(As1−xBr1+x) Ca2AsBrcubica=6.053.47yellow, or dark brownCa3AsBr3cubicPm3a=5.913.48colourless or yellowCu6AsS5Br cubicF4ma=9.87634.80(Ge38As8)+8⋅8 I−cubicPm3na=10.6255.71semiconductor resistivity 1 Ω cm; band gap 0.9 eV; silvery greyI8As21Ge25cubicPmna=10.5963 Z=11189.776.143colourlessCd2As3BrmonoclinicC2/ca = 8.281, b = 9.411, c = 7.993, β = 101.49°, z = 45.76blackCd4As2Br3cubicPaa=12.615.51semiconductor band gap 1.8 eVCd4PAsBr3cubicPaa=12.5215.38Cd4As2I1.5Br1.5cubicPaa=12.83La3AsBr3cubicI4132a=12.095.50Pr3AsBr3cubicI4132a=12.025.64Hg2As3BrmonoclinicC2/ca = 8.0914, b = 9.300, c = 8.1084, β = 99.323°, z = 47.79blackHg4As2Br3cubicPa3a=12.610 Z=82012.45.54 7.90red; dark greyHg19As10Br18triclinicPa = 11.262, b = 11.352, c = 12.309, α = 105.724, β = 105.788, γ = 109.078° 1314.3dark brown(HgBr2)3(As4S4)2monoclinicP21/ca = 9.593, b = 11.395, c = 13.402, β = 107.27, Z = 21399Hg3AsS4BrhexagonalP63mca = 7.430, c = 9.364 Z=2(Hg6As4)[TiBr6]BrcubicPa3a= 1230.9[Hg6As4](CrBr6)BrcubicPaa=12.275 [Hg6As4]4+ framework with 2 kinds of cavity; band gap 1.5 eV[Hg6As4](FeBr6)Hg0.6cubicPaa=12.332[Hg6As4]4+ framework with 2 kinds of cavity; band gap 1.5 eV[Hg6As4](CuBr3)2monoclinicI2/aa = 14.884, b = 9.358, c = 20.413, β=92.88°, Z = 6dark red[Hg11As4](GaBr4)4monoclinicC2/mHg3AsSe4BrhexagonalP63mca = 7.707, c = 9.47 Z=2(Hg2Cd2As2Br)BrorthorhombicPmmaa = 8.791, b = 4.701, c = 9.779, Z=2404.27.688dark red(Hg6As4)(CdBr6)cubicPaa=12.3738 Z=41894.67.345red; air stable; band gap 1.94[Hg6As4][InBr6]BrcubicPaa=12.3511 Z=41884.2dark red[Hg4As2](InBr3.5As0.5)HexagonalP63/mmca = 7.7408, c = 12.535, Z=2650.47[Hg6As4Br3](SnBr3)cubicP213a=12.383 Z=4[Hg6As4][YbBr6]BrcubicPaa=12.362 Z=41889.17.860dark redHg9As4Bi2Br12tetragonalP43a=10.865 b=10.865 c=28.357 Z=43347.56.91orange
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