Tellurogallate

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Tellurogallates are chemical compounds which contain anionic units of tellurium connected to gallium. They can be considered as gallates where tellurium substitutes for oxygen. Similar compounds include the thiogallates, selenogallates, telluroaluminates, telluroindates and thiostannates. They are in the category of chalcogenotrielates or more broadly tellurometallates or chalcogenometallates.

Formation

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Tellurogallates may be produced by heating a metal with gallium and tellurium in a sealed tube.

Properties

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Some tellurogallates are semiconductors

Use

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Tellurogallates are primarily of research interest. They are investigated for their infrared, thermoelectric and semiconductor characteristics.

List

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name chem mw crystal system space group unit cell Å volume density comment CAS

no

references
lithium tellurogallate LiGaTe2 321.86 tetragonal I42d a=6.338 c=11.704 Z=16 470.1 2.937 orange to black; band gap 2.41 eV [1][2]
sodium trigallium pentatelluride NaGa3Te5 trigonal R32 a=14.58 c=17.761 Z=12 3269.5 5.272 black [3]
[(C6H5)4P]GaTe2(en)2 en = ethane-1,2-diamine monoclinic C2/c a=20.680 b=5.3877 c=27.192 β=19.13° 3029.6 1.720 orange [4]
KGaTe2 monoclinic C2/c a=11.768, b=11.775, c=16.503, β=100.36°, Z=16 [5]
KGaTe2 triclinic P1 or P1 a=8.34 b=8.34 c=64.4 αβγ~90° 4479.4 4.30 [6]
hexapotassium di-μ-telluridobis (ditelluridogallate) K6Ga2Te6 monoclinic P121/c1 a = 8.616, b = 13.685, c = 11.290, β = 127.61°, Ζ = 2 1054.6 [7]
K[K([18]crown-6)]2[GaTe3] · 2CH3CN monoclinic C2/m a=24.469 b=14.073 c=12.875 β=94.47 Z=4 4369 1.784 yellow (@113K) [8]
CaGa6Te10 monoclinic C2 a=14.40 b=14.40 c=10.21 β=90.0 Z=4 2117.1 [9]
Cr3(GaTe3)2 amorphous [10]
MnGa2Te4 monoclinic C2/c a=11.999, b=11.999, c=24.922, β=104.01°, Z=16 [11]
MnGa2Te4 orthorhombic Pnma a = 27.448, b = 4.192, c = 6.993 Z=4 804.6 5.82 [12]
Fe3(GaTe3)2 amorphous [10]
Co3(GaTe3)2 amorphous [10]
Ni3−xGaTe2 P63/mmc a=3.9393 c=15.7933 Z=2 [13]
Ni2FeGaTe P63/mmc a=3.962 c=15.868 Z=2 215.7 [13]
CuGaTe2 I42d a = 6.02348, c = 11.93979 433.2 [14]
ZnGa2Te4 I4 a=5.930, c=11.859 Z=2 5.7 [15]
ZnGa2Te4 tetragonal I42m a=6.922 c=11.809 [16]
ZnGa2Te4 F43m a=5.843 Z=1/2 [16]
AgGaTe2 I42d a=6.320 c=11.986 Z=2 6.052 melt 725.7 °C; heat of fusion= 104.8 J/g−1 [17][18]
AgGa5Te8 tetragonal I41/a a=8.415 c=47.877 [19][20]
Ag2Ga6Te10 [19]
Ag9GaTe6 hexagonal melt 710 °C Low thermal conductivity [21][19][22]
CdGa2Te4 tetragonal a=5.742 c=10.730 [23]
InGaTe2 tetragonal I4/mcm a = 8.412, c = 6.875; Z = 4; [24]
In2Ga6Te10 trigonal R32 a=10.34 alpha=89.7 Z=12 5.78 [25]
SnGa6Te10 trigonal P3121/6 a=14.408 c=17.678 Z=6 3178 5.684 black [26]
SnxGa1-xTe x=1/2 cubic a=6.315 251.84 [27]
β-BaGa2Te4 orthorhombic Imma a = 23.813, b = 11.967, c = 6.7215 [28]
Ba5Ga2Ge3Te12 monoclinic P21/c a = 13.6540, b = 9.6705, and c = 23.1134 β =91.829 [28]
LaGaITe2 orthorhombic Pmc21 [29]
CeGaITe2 orthorhombic Pmc21 [29]
PrGaITe2 orthorhombic Pmc21 [29]
NdGaITe2 orthorhombic Pmc21 [29]
Eu0.81Ga2Te4 tetragonal I4/mcm a = 8.2880, c = 6.744, Z = 2 463.24 [30]
HgGa2Te4 cubic F43m a=6.002 Z=1 216.22 [31]
HgGa2Te4 tetragonal I42m a=6.025 c=12.037 Z=2 436.95 black [31]
TlGaTe2 tetragonal I4/mmm D184h a=8.429 c=6.865 band gap 0.84 eV [32][33]
Tl2InGaTe4 tetragonal I4mcm [34]
PbGa6Te10 trigonal P3221/6 a=14.465 c=17.718 Z=6 3210 5.898 black [35][26]

References

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