A selenate selenite is a chemical compound or salt that contains selenite and selenate anions ( and respectively). These are mixed anion compounds. Some have third anions.
Naming A selenate selenite compound may also be called a selenite selenate.
Production One way to produce a selenate selenite compound is to evaporate a water solution of selenate and selenite compounds.
Properties On heating, selenate selenites lose and and yield selenites, and ultimately metal oxides.
Related Related to these are the sulfate sulfites and tellurate tellurites. They can be classed as mixed valent compounds.
List nameformularatio :Mwsystemspace groupunit cell ÅvolumedensitypropertiesreferencesBoroseleniteselenate1:2monoclinicP21/ca = 4.3466, b = 7.0237, c = 22.1460, β = 94.922°, Z = 4colourless hygroscopic1:1orthorhombicCmc21a=9.615, b=11.19, c=9.62 Z=41:2monoclinicP21/ca = 6.5294, b = 10.8557, c = 12.6281, β = 103.543° Z = 4870.211:1monoclinicP21/ca = 6.535, b = 10.970, c = 12.559, β = 102.70° Z = 4878.31:1monoclinicP21/ca=8.355,b=8.696,c=9.255, β=93.72°,Z=4670.95Lithium sesquicopper selenite selenate2:2monoclinicI2/aa=16.293,b=5.007,c=14.448, β = 94.21°, Z=41175.51:1a=5.339, c=41.206, Z=61040.21:2monoclinicC2/ca=11.9118 b=6.8886 c=12.9644 β=103.839°UV cut off 211 nmZr(SeO3)(SeO4)1:1orthorhombicPbcaa = 8.291, b = 9.458, c = 15.357, Z = 81204.2Zr4(SeO3)(SeO4)77:1monoclinicP21/na = 5.313, b = 10.704, c = 10.484, β = 104.13°, Z = 1578.2Zr3(SeO3)(SeO4)5·2H2O5:1triclinicP1a = 5.273, b = 8.079, c = 11.959, α = 82.60°, β = 88.27°, γ = 89.87°, Z = 1505.1Ag4(Mo2O5)(SeO4)2(SeO3)2:1orthorhombicPbcma=5.6557, b=15.8904, c=15.7938, Z=41419.4tricadmium(II) bis-[selenite(IV)] selenate(VI)Cd3(SeO3)2(SeO4)1:2monoclinicP21a=8.302 b=5.337 c=10.843 β =108.641 Z=2876.324.539SHG 0.6×KDP; stable to 482 °C(NH4)4Cd(HSeIVO3)2(SeVIO4)22:2triclinicPa = 5.791 b = 7.411 c = 10.736 α = 90.05° β = 105.02° γ = 112.61°408.2Ag2Cd(Se2O5)(Se0.3S0.7O4)676.19triclinicPa=6.7485 b=6.8504 c=9.769 α=101.36° β=105.96° γ=91.159° Z=2424.415.291yellowSb2(SeO3)2SeO41:2640.38monoclinicI2/aa=8.1184 b=7.4572 c=14.7625 β=94.892° Z=4890.474.777birefringence 0.158 @ 546La2(HSeO3)(SeO4)· 2H2O1:1monoclinicP21/na=7.272 b=9.409 c=11.940 β =93.32°NaLa(SeO3)(SeO4)1:1monoclinicP21/ca=10.751 b=7.098 c=8.437 β =90.90°Pr4(SeO3)2(SeO4)F61:2monoclinicC2/ca = 22.305, b = 7.1054, c = 8.356, β = 98.05°, Z = 4light greendineodymium diselenite selenateNd2(SeO3)2(SeO4) · 2H2O1:2721.39monoclinicC2/ca = 12.276, b = 7.0783, c = 13.329, β = 104.276°1122.44.27pinkNaSm(SeO3)(SeO4)1:1monoclinicP21/ca = 10.669, b = 6.9166, c = 8.2588, β = 91.00° Z = 4light yellowEr2(SeO3)2(SeO4) · 2H2O1:2monoclinicC2a=11.935 b=6.881 c=6.473 β =103.79° Z=4Hf(SeO3)(SeO4)(H2O)41:1orthorhombicAu2(SeO3)2(SeO4)1:2orthorhombicCmc21a = 16.891, b = 6.3013, c = 8.327, Z = 4886.2orange yellowHg2(SeO3)(SO4)1:1624.20monoclinica=6.3799 b=7.0185 c=13.4426 β=94.511° Z=4600.066.909birefringence 0.133@532 nm and 0.126@1064 nmHg3(SeO3)2(SeO4)1:2monoclinicP21a = 8.3979 b = 5.3327 c = 11.148 β = 108.422° Z = 2473.67colourlessHg3Se(SeO3)(SO4)monoclinicP21/na=7.1188 b=9.9209 c=12.4565 β=95.398° Z=4875.846.854colourless; band gap 3.5 eV; birefringence 0.069@546 nmHg5O(SeO3)(SeO4)1:11288.87C2/ca=17.563 b=6.188 c=18.912 β =90.379 Z=82055.28.331yellowHg3Hg2Hg(HgO2)(SeO3)2(SeO4)·H2O1:2R3a=5.9239 c=37.096 Z=3Hg3Hg2Hg2(HgO2)(SeO3)2(SeO4)2·H2O2:1P31ca=5.8908 c=31.048 Z=2Ag4Hg(SeO3)2(SeO4)1:21028.95orthorhombicCmc21a=8.1690 b=11.9903 c=10.8870 Z=41066.46.409398 nm cutoff NLO 0.35×KDPLa2Hg3(SeO3)4(SO4)2(H2O)24:21611.55triclinica=9.1127 b=9.2446 c=13.5562 α=86.099 β=79.267 γ=61.814 Z=2988.735.413Pb2(SeO3) (SeO4)1:1684.30orthorhombicPnmaa=13.5080 b=5.6238 c=9.2706 Z=4704.256.454stable to 232 °CschmiederitePb2Cu2(OH)4(SeO3)(SeO4)1:1monoclinicP21/ma = 9.922, b = 5.712, c = 9.396, β = 101.96°, Z = 2Bi2(SeO3)2(SeO4)1:2814.84monoclinicI2/aa= 8.0440 b=7.4377 c=14.7456 β =97.274 Z=4875.116.184colourlessAg2Bi2(SeO3)3(SeO4)1:31157.54monoclinicP21/ma=9.5380 b=5.4965 c=11.8207 β =92.892 Z=2618.926.211339 nm cutoffJoseoniteTh(SeO3)(SeO4)1:1monoclinicP21/ca=7.0351 b=9.5259 c=9.02266 β =103.128, Z=4(H3O)[(UO2)(SeO4)(SeO2OH)]1:1monoclinicP21/na = 8.668, b = 10.655, c = 9.846, β = 97.88°900.7[C5H14N][(UO2)(SeO4)(SeO2OH)]1:1monoclinicP21/na=11.553, b=10.645, c=12.138, β=108.05, Z=4[C5H14N]4[(UO2)3(SeO4)4(HSeO3)(H2O)]·(H2SeO3)(HSeO4)5:2triclinicPa = 11.7068, b = 14.816, c = 16.977, α = 73.899°, β = 76.221°, γ = 89.361°, Z = 22743.0catena-(bis(Dimethylammonium) oxonium tetrakis(μ3-selenato)-(μ2-selenito)-aqua-hexaoxo-tri-uranium selenous acid)[C2H8N]2[H3O][(UO2)3(SeO4)4(HSeO3)(H2O)](H2SeO3)0.24:1.2monoclinicP21/ma 8.3116 b 18.6363 c 11.5623 β =97.582°catena-(tris(Dimethylammonium) tetrakis(μ3-selenato)-(μ2-hydrogen selenito)-aqua-hexaoxo-tri-uranium dimethylamine)[C2H8N]3(C2H7N)[(UO2)3(SeO4)4(HSeO3)(H2O)]4:1orthorhombicPnmaa =11.659 b =14.956 c =22.194[NH3(CH2)9NH3][(UO2)(SeO4)(SeO2OH)](NO3)1:1triclinicPa = 10.7480, b = 13.8847, c = 14.636, α = 109.960°, β = 103.212°, γ = 90.409°, Z= 41990.0Cs2(H2O)5[(UO2)7(SeO4)2(SeO3)2O4]. H2O2:2monoclinicP21/ma =.1381, b =15.0098, c =15.1732 β=91.17°
References