Tellurite tellurate

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A tellurite tellurate is chemical compound or salt that contains tellurite and tellurate anions [TeO3]2- [TeO4 ]2-. These are mixed anion compounds, meaning the compounds are cations that contain one or more anions. Some have third anions. Environmentally, tellurite [TeO3]2- is the more abundant anion due to tellurate's [TeO4 ]2- low solubility limiting its concentration in biospheric waters. Another way to refer to the anions is tellurium's oxyanions, which happen to be relatively stable. [1]

Contents

Naming

A tellurite tellurate compound may also be called a tellurate tellurite. Compounds that contain the anions follow basic nomenclature rules, the cation is named first, followed by the anion. [2] As individual ions current IUPAC naming conventions dictate that compounds containing what was conventionally known as the tellurite ion, [TeO3]2-, be named as tellurate (IV) compounds, while other tellurates are labeled tellurate (VI) compounds. Furthering confusion, a number of other tellurate oxyanions exist, including pentoxotellurate, [TeO5]4-, and ditellurate, [Te2O10]8-. Additionally, a number of compounds that do not even include tellurium oxyanions still have "tellurate" in their names, as in the case of octafluoridotellurate, [TeF8]2-. [3]

Production

One way to produce a tellurite tellurate compound is by heating oxides together. [4] Tellurite tellurate compounds can also occur naturally as minerals such as Carlfriesite Ca[Te4+2Te6+O8]. [5]

Properties

Tellurite tellurate compounds can crystalize under certain conditions. Monoclinic and orthorhombic dominate crystal structures of the tellurite tellurates. [5] Most compounds are transparent from near ultraviolet to the near infrared. Te-O bonds cause absorption lines in infrared. Sodium tellurite exhibit

Related to these are the selenate selenites and sulfate sulfites by varying the chalcogen.

List

nameformularatio

TeO3:TeO4

 mw system space group unit cell Åvolumedensityopticalreferences
NH4Te2O5(OH)1:1370.24orthorhombicPnmaa=7.340 b=5.546 c=13.164 Z=4535.94.50 [6]
K2Te4O121:3780.59monoclinicC2/ma=12.360 b=7.248 c=11.967 β =105.68 Z=41032.25.03 [4] [1]
K4[Te56+Te34+]O233:51545.18orthorhombicPna21a = 19.793, b = 14.664, c = 7.292, Z = 4 [7]
CarlfriesiteCa[Te4+2Te6+O8]2:1550.87monoclinicC2/ca=12.576 b=5.662 c=9.884 β=115.566.3 [5]
K4V6[Te24+Te6+]O242:11228.83trigonalR3ca = 9.7075, c = 42.701, Z = 63484.9 [8]
Co2+6(Te6+O6)(Te4+O3)2Cl22:1999.30tetragonalP42/mbca = 8.59 c = 5.91 [5]
Rb4[Te56+Te34+]O233:51730.66orthorhombicPna21a = 19.573, b = 14.448, c = 7.273, Z = 4 [7]
Rb4V6[Te24+Te6+]O242:11414.31trigonalR3ca = 9.8399, c = 43.012, Z = 63606.6 [8]
Sr[Te4+2Te6+O8]2:1598.42tetragonalP42/ma=6.8321 c=6.7605 [5]
SrCuTe2O71:1518.36orthorhombicPbcma = 7.1464, b = 15.061, c = 5.4380, Z = 4585.3 [9]
NaYTe2O71:1479.10monoclinicP21/na=6.7527 b=7.5077 c=11.8867 β =99.935 Z=4593.595.361 [10]
RbTe1·25Mo0·75O6a=10.469 [11]
(Ag,Na)2Te4O15 x=0.42:2monoclinicP21/ca = 6.333, b = 24.681, c = 7.308, β = 110.84° Z = 4 [4]
Ag2[Te4+Te6+O6]1:1566.93monoclinicP21/ma=5.4562 b=7.4009 c=6.9122 β=101.237 [5]
Ag2[Te4+2Te6+2O11]2:2902.13triclinicP1a=7.287 b=7.388 c=9.686 α=95.67 β=94.10 γ=119.40 [5]
Cd2Te4+Te6+O71:1592.02monoclinicP21/ca=9.3039 b=7.3196 c=13.2479 β=122.914 [5]
Cs2Te4+Te36+O121:3968.20rhombohedralR3ma=7.2921 c=18.332 [12]
CsTe2O6–x1:1484.10cubic [12]
CsTe2O6–x1:1484.10orthorhombic [12]
BaTe2O61:1488.52orthorhombicCmcma=5.569 b=12,796 c=7.320 Z=46.19 [5] [2]
BaMgTe2O71:1528.83orthorhombicAma2a = 5.558, b = 15.215, c = 7.307 Z = 4617.9SHG 5 × KDP [13]
CsTe1·13Mo0·864O6a=10.643 [11]
BaCoTeO3TeO41:1563.46orthorhombicAma2 [14]
BaCuTeO3TeO41:1568.07orthorhombicAma2a = 5.4869, b =15.412, c = 7.2066, Z = 4.609.42 [3]
BaZnTe2O7569.91orthorhombicAma2a = 5.5498, b = 15.316, c = 7.3098, Z = 4621.34SHG 5 × KDP [13]
CeV3Te3O15(OH)3·2H2O995.74hexagonalP63/mmca=12.166 c=12.537 Z=41606.94.116dark red [15]
PrV3Te3O15(OH)3·2H2O996.53hexagonalP63/mmca=12.1147 c=12.4949 Z=41588.14.168dark red [15]
NdV3Te3O15(OH)3·H2O983.86hexagonalP63/mmca=12.1075 c=12.4572 Z=41581.54.132dark red [15]
SmV3Te3O15(OH)3·H2O989.97hexagonalP63/mmca=12.1068 c=12.4509 Z=41580.54.160dark red [15]
EuV3Te3O15(OH)3·H2O991.58hexagonalP63/mmca=12.0731 c=12.3674 Z=41561.24.219dark red [15]
GdV3Te3O15(OH)3·H2O996.87hexagonalP63/mmca=12.0745 c=12.3701 Z=41561.94.239dark red [15]
RbTe1·5W0·5O6a=10.462 [11]
CsTe1·625W0·375O6a=10.543 [11]
α-Hg2Te2O71:1768.38monoclinicC2/ca=12.910 b=7.407 c=13.256 β =112.044 Z=8 [16]
β-Hg2Te2O71:1768.38orthorhombicAea2a=7.441, b=23.713 ,c=13.522, Z=16 [16]
PbCuTe2O71:1637.94orthorhombicPbcma = 7.2033, b = 15.047, c = 5.4691, Z = 4592.78 [9]
Bi[(Bi3+Te4+)Te6+O8]801.16 [5]
(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)23111.30trigonalP3 2 1a=9.1219(17), c=11.9320(9)4.65Viridian green [17]

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<span class="mw-page-title-main">Tellurium dioxide</span> Chemical compound

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References

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  17. ↑ "Tlapallite: Mineral information, data and localities".
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