Arsenidogermanate
Arsenidogermanates are chemical compounds that contain anions with arsenic bonded to germanium. They are in the category of tetrelarsenides, pnictidogermanates, or tetrelpnictides.
Germanium forms two arsenides: GeAs and GeAs2.[1]
List
name | formula | formula
weight |
crystal
system |
space
group |
unit cell | volume | density | comments | ref |
---|---|---|---|---|---|---|---|---|---|
LiGe3As3 | orthorhombic | Pbam | a=10.0862 b=15.7612 c=3.7403 Z=4 | 594.60 | 5.01 | [2] | |||
Li5GeAs3 | black | [3] | |||||||
NaGe6As6 | 908.05 | monoclinic | C2/m | a = 22.063, b = 3.8032, c = 7.2020, β = 92.744°, Z = 2 | 603.64 | 5.00 | needles | [4] | |
Na10Ge2As6 | monoclinic | P121/n1 | a=13.531 b=7.544 c=8.298 β = 90.2° Z=2 | 847.0 | [5] | ||||
K2GeAs2 | orthorhombic | Ibam | a = 13.292, b = 7.028, c = 6.548 Z = 4 | moisture sensitive needles | [6] | ||||
KGe3As3 | 481.53 | orthorhombic | Pnma | a=9.993, b=3.7664, c=18.607 Z=4 | 700.34 | 4.568 | [7] | ||
K2Ge3As3 | 520.73 | orthorhombic | Pnnm | a=14.1466 b=16.300 c=3.7489 Z=4 | 864.47 | 4.001 | fibrous metallic | [8] | |
K2NaGaAs2 | Ibam | a=6.733 b=14.809 c=6.574 Z=4 | 655.5 | 3.250 | [9] | ||||
KCdGeAs2 | triclinic | P1 | a = 8.004, b = 8.402, c = 8.703, α = 71.019°, β = 75.257°, γ = 73.746°, Z=4 | band gap 0.8 eV; Ge2As6 units | [10] | ||||
RbCdGeAs2 | triclinic | P1 | a = 8.269, b = 8.452, c = 8.735, α = 71.163°, β = 75.601°, γ = 73.673°, Z=4 | Ge2As6 units | [10] | ||||
Sr3Ge2As4 | red metallic; 1D As3GeGeAs3 units | [11] | |||||||
K5In5Ge5As14 | monoclinic | C2/m | a=40.00,b=3.925,c=10.299, β=99.97°, Z=8 | 1592 | 4.55 | air sensitive; layered | [12] | ||
K8In8Ge5As17 | monoclinic | P21/c | a=18.394,b=19.087,c=25.360, β=105.71°, Z=4 | 8571 | 4.45 | air sensitive; layered | [12] | ||
RbGe3As3 | 528 | orthorhombic | Pnma | a=10.166 b=3.7595 c=19.028 Z=4 | 727.2 | 4.823 | [7] | ||
Rb(Ge1.5In0.5)As2(As1.5Ge0.5) | orthorhombic | Cmc21 | a = 3.799, b = 16.50, c = 12.24, Z = 4 | 767 | 4.589 | [13] | |||
RbXGe2−XInXAs4 | [13] | ||||||||
I8As21Ge25 | 4403 | cubic | Pm3n | a=10.5963 Z=1 | 1189.8 | 6.1431 | colourless | [14] | |
Cs5GeAs3 | metallic; unstable in air; GeAs3 units | [15] | |||||||
BaGe2As2 | tetragonal | P42mc | a=7,786 c=8.664 Z=4 | 525.2 | 5.47 | metallic | [16] | ||
Ba4GeAs4 | dark metallic; GeAs4 units | [17] | |||||||
Re3Ge0.6As6.4 | [18] | ||||||||
Re3GeAs6 | 1080.75 | cubic | Im3m | a = 8.73202 Z=4 | 665.75 | 10.78 | n-type semiconductor | [18] | |
AuGeAs | monoclinic | Cc | a 7.2729, b 6.2953, c 6.3067, β 119.209° | [19] | |||||
KXGe2−XTlXAs4 | [13] |
References
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