Tellurogermanate

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Tellurogermanates or telluridogermanates are compounds with

anions with tellurium bound to germanium. They are analogous with germanates, thiogermanates and selenidogermanates.[1]

Properties

Most tellurogermanates are coloured black. They are semiconductors with a small band gap.

Ge4Te104− forms an adamantane structure.[2]

List

crystal

system

space

group

cell dimensions volume density ref
(Et4N)4Ge4Te10 cubic P43m a 22.923 black [3][2]
Na6Ge2Te6 monoclinic P21/c a=8.899 b=12.946 c=8.908 β =119.87° [4]
K2GeTe4 monoclinic P21/c a = 12.703 b = 8.680 c = 9.829 β = 104.8° [5]
K4Ge4Te10 [2]
K6Ge2Te6 monoclinic C2/c [6]
[K4(H2O)2][GeTe4] monoclinic C2/c a 19.43 b 7.4133 c 13.845 β 129.93° [7]
Cr2Ge2Te6 rhombohedral P312 a=6.8275 c=20.5619 V=0 Z=3 830 6.091 dark grey; ferromagnetic < 63K [8][9]
[Mn(en)3]2(Ge5Te10) orthorhombic P21212 a 10.735 b 23.417 c 8.932 [10]
(Me4N)2Mn[Ge4Te10] I4 band gap 0.69 eV [11]
Na9Sb[Ge2Te6]2 monoclinic C2/c a = 9.541 b = 26.253 c = 7.582β = 122.23° Z = 2 dark grey; band gap 1.51 eV [12]
Cs2GeTe4 848.8 orthorhombic Pnma a=12.602 b=11.501 c=7.694 Z=4 1113.8 5.06 [13]
Cs6Ge2Te6 monoclinic C2/c a = 17.027 b = 14.237 c = 10.104 β = 96.701° Z = 4 black; Ge-Ge bond [6]
Cs2Ge3Ga6Te14 P3m1 a = 8.2475 c = 14.2734 Z = 1 840.82 [14]
Cs2Ge3In6Te14 P3m1 a =8.5404 c = 14.6766 Z = 1 927.07 [14]
β-BaGa2Te4 orthorhombic Imma a = 23.813 b = 11.967 c = 6.7215 [15]
Ba2GeTe3 orthorhombic Pnma a = 6.790 b = 23.720 c = 6.930 [16]
Ba2Ge2Te5 orthorhombic Pna21 a= 13.3879 b= 9.1703 c= 9.9441 Z= 4 black [17]
Ba5Ga2Ge3Te12 monoclinic P21/c a = 13.6540 b = 9.6705 c = 23.1134 [15]
Ba6In2Ge2Te15 monoclinic P21/c a 9.6201 b 13.4225 c 27.585 β 92.469° [18]
Ba4Ge2Sb2Te10 monoclinic P21/c a = 13.984 b = 13.472 c = 13.569 β = 90.16° Z=4 black [19]
Tl2GeTe3 orthorhombic Pnma a = 8.303 b = 21.514 c = 8.453 Z = 8 black [20]
Tl2GeTe5 [21]

References

  1. PMID 35098237
    .
  2. ^
    doi:10.1016/S0277-5387(00)83436-1
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  3. ISSN 0276-7333
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  4. ISSN 0044-2313
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  5. doi:10.1016/0025-5408(84)90169-7
    .
  6. ^
    S2CID 101671292
    .
  7. doi:10.1002/zaac.200700311
    .
  8. S2CID 250922341
    .
  9. PMID 34516772
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  10. PMID 19685902
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  11. PMID 18998670
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  12. S2CID 226907957
    .
  13. S2CID 97624411
    .
  14. ^
    PMID 22702657
    .
  15. ^
    S2CID 237546151
    .
  16. S2CID 203129111
    .
  17. S2CID 244111737
    .
  18. S2CID 248643773
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  19. S2CID 245550240
    .
  20. doi:10.1006/jssc.1995.1284
    .
  21. doi:10.1016/0022-4596(90)90051-X
    .
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