Phosphidogermanate

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Phosphidogermanates are chemical compounds that have

phosphidosilicates or phosphidostannates
.

They are under investigation as infrared non-linear optic materials[1] and solid-state electrolytes.[2]

List

formula name MW crystal

system

space

group

unit cell Å volume density form properties references
GeP monoclinic C2/m a = 15.1948 b = 3.6337 c = 9.1941 β = 101.239° [3]
Li2GeP2 148.458 tetragonal I41/acd a = 12.3069 c = 19.0306 Z=32 2882.42 2.736 Ge4P10 supratetrahedra red [4]
LiGe3P3 317.751 orthorhombic Pbam a = 9.8459 b = 15.7489 c = 3.5995 Z=4 558.15 3.780 GeP4 and Ge(P3Ge) tetrahedra in

5 and 6-membered rings making 2D slabs

black [4]
Li8GeP4 252 Pa3 a=11.80203 c=11.80203 Z=8 1643.88 2.037 [5][6]
Li8GeP4 251.99 cubic P43n a=11.77294 Z=8 1635.98 2.046 [5][6]
Li14GeP6 cubic Fm3m a=5.95667 Z=4 1.860 brown [2][7]
Li10.1Ge5P Pnma a=10.360 b=4.3072 c=24.267 Z=4 1082.8 2.86 Ge5 rings black; actually is a germanide phosphide [8]
NaGe3P3 orthorhombic Pmc21 a=3.6276 b=8.407 c=10.332 Z=2 315.09 3.517 Ge3P7 ring red; band gap 2.06 eV; semiconductor [9]
Na2Ge3P3 356.72 monoclinic C2/m a = 17.639 b = 3.6176 c = 11.354 β = 92.74° Z=4 723.7 3.274 black [10]
Na5Ge7P5 monoclinic C2/m a = 16.168 b = 3.6776 c = 12.924 β = 91.30° Z=2 768.2 3.343 black [10]
Na8GeP4 380.4 cubic Fd3m a=13.4230 Z=8 2418.53 2.08943 same as Na8SnSb4 black; decomposes over 350°C to Na10Ge2P6;band gap 1.9 eV [5]
Na10Ge2P6 monoclinic P21/n a=13.176 b =7.36.4 c=8.042 β=90.26° Z=2 780.29 2.38 beige; moisture sensitive [11]
CuGe2P3 [12]
ZnGeP2 I42d a=5.466 c=10.722 melt 1027°C [1][13][14][15]
Ag6Ge10P12 1744.76 cubic I43m a=10.3111 Z=2 1096.3 5.286 air stable; silver grey; thermoelectric [16][17][18]
CdGeP2 I42d a=5.740 c=10.773 [19]
Cs5GeP3 orthorhombic Pnma a=14.31 b=5.994 c=15.618 Z=4 metallic [20]
BaGe2P2 344.46 tetragonal P42mc a =7.6153 c =8.490 Z=4 492.3 4.647 light metallic grey; melt 861 °C [21]

References

  1. ^
    S2CID 237372337
    .
  2. ^
    S2CID 234511163
    .
  3. S2CID 195416712
    .
  4. ^
    S2CID 214226863
    .
  5. ^
    ISSN 0044-2313
    .
  6. ^
    S2CID 106211828
    .
  7. S2CID 225445668
    .
  8. S2CID 246183043
    .
  9. PMID 22042509
    .
  10. ^
    S2CID 225006755
    .
  11. S2CID 95632691
    .
  12. doi:10.1016/0022-3697(84)90115-X
    .
  13. ISSN 0003-6951
    .
  14. PMID 37208445
    .
  15. S2CID 94941316
    .
  16. doi:10.1002/crat.2170230114
    .
  17. ISSN 0897-4756
    .
  18. S2CID 246977030
    .
  19. doi:10.1016/0022-3697(66)90124-7
    .
  20. ISSN 0570-0833
    .
  21. S2CID 212863749
    .
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