Selenogallate
Selenogallates (or selenidogallates) are chemical compounds which contain anionic units of
Formation
Selenogallates may be produced by heating a metal azide with gallium monoselenide and selenium in a sealed tube.[1]
Selenogallates containing Se2 units are formed by heating with selenium. Conversely, by heating, extra selenium vapour can be lost forming a compound with less selenium.[2]
Properties
Most selenogallates are semiconductors. Their resistance drops on exposure to light. Also selenogallates are often coloured, most often red.
Selenogallate structures can include rings such as the four-membered ring: [GaSeGaSe] or the five-membered [GaSeSeGaSe]. These can be linked into chains.
Use
Selenogallates are primarily of research interest. They are being researched for photovoltaic cells where efficiencies over 20% are possible,[3] and for photoconductors, and non-linear optical devices.
List
name | chem | mw | crystal system | space group | unit cell Å | volume | density | comment | CAS
no |
references |
---|---|---|---|---|---|---|---|---|---|---|
LiGaSe2 | 234.581 | orthorhombic | Pna21 | a=6.8478 b=8.2575 c=6.5521 Z=4 | 370.5 | 4.206 | band gap 3.39; SHG | [4] | ||
[H2dap]4Ga4Se10 dap = 1,2-diaminopropane | monoclinic | C2/c | a 10.821 b 10.820 c 21.386, β 97.265° | [5] | ||||||
[(dienH2)(dienH)3]Ga5Se10 dien = diethylenetriamine | monoclinic | P21/c | a 6.3116 b 13.748 c 47.890 β 90.640° | chain | [6] | |||||
[(tetaH2)3(teta)]Ga6Se12 teta = triethylenetetramine | monoclinic | Cc | a 20.566 b 25.896 c 12.785 β 125.568° | chain | [6] | |||||
[bappH2][Ga2Se4] bapp =1,4-Bis-(3-aminopropyl)piperazine | 657.63 | triclinic | P1 | a=6.3517 b=7.8498 c=10.7818 α=71.457° β=84.925° γ=72.084° Z=1 | 484.93 | 2.30 | yellow; | [7] | ||
[1,3-pdaH2][Ga2Se2(Se2)(Se3)] 1,3-pda = 1,3-diaminopropane | monoclinic | P21 | a 7.5724 b 12.3856 c 8.0889 β 94.120° | band gap 2.08 eV; GaSeSeSeGaSe & GaSeSeGaSe rings; red | [8] | |||||
[1,4-bdaH2][Ga2Se3(Se2)] 1,4-bda = 1,4-diaminobutane | monoclinic | C2/c | a 11.7660 b 11.7743 c 10.9763 β 110.170° | band gap 2.32 eV; orange | [8] | |||||
[Me2NH2]2[Ga2Se2(Se2)2] | monoclinic | P21/c | a 14.13 b 8.456 c 14.07 β 100.32° | band gap 2.07 eV; red | [8] | |||||
α-[AEPH]2[Ga2Se2(Se2)2] AEP = N-(2-aminoethyl)piperazine | monoclinic | Pn | a 6.981 b 15.436 c 11.831 β 91.462° | band gap 1.93 eV; red | [8] | |||||
β-[AEPH]2[Ga2Se2(Se2)2] | monoclinic | P21/c | a 10.623 b 16.495 c 7.163 β 94.93° | band gap 2.10 eV; red | [8] | |||||
[Ga(en)3][Ga3Se7(en)] · H2O | 1090.02 | orthorhombic | Pna21 | a=14.279 b=9.616 c=19.676 Z=4 | 2701.6 | 2.680 | bicyclic Ga3Se7 | [9] | ||
NaGaS2 | monoclinic | C2/c | a 10.226 b 10.227 c 13.506 β 100.926° | 1389.9 | [10] | |||||
NaGaS2•H2O | monoclinic | C2/c | a=9.5160 b=113986 c=17.8761 β=101.590 | 1899 | [10] | |||||
NaGa3Se5 | 626.95 | orthorhombic | P212121 | a=9.764 b=13.624 c=27.000 Z=16 | 3591.6 | 4.638 | [11] | |||
KGaSe2 | 266.74 | monoclinic | C2/c | a = 10.878, b = 10.872, c = 15.380, β = 100.18° Z=16 | 1790.3 | 3.959 | air stable; light yellow; mp=965 °C; [Ga4Se10]8− units connected into sheets; band gap 2.60 eV | [12] | ||
Cr2.37Ga3Se8 | monoclinic | C2/m | magnetic semiconductor; band gap 0.26 eV | [13] | ||||||
MnGa2Se4 | band gap 2.7 eV | [14] | ||||||||
[Mn(en)3][Ga2Se5] en = Ethylenediamine | 771.51 | orthorhombic | Pbcn | a=9.772 b=15.297 c=13.749 Z=4 | 2055.2 | 2.50 | red; {[Ga2Se5]2-}∞ chains Ga2Se2 and Ga2Se3 rings | [7] | ||
[Mn(dap)3]0.5GaSe2 | orthorhombic | Cmcm | a 9.645 b 16.754 c 12.891 | [5] | ||||||
[Mn(atep)]Ga2S4 atep = 4-(2-aminoethyl)triethylenetetramine | monoclinic | P21/n | a 9.909 b 11.947 c 14.831, β 102.268° | [5] | ||||||
[Co(en)3]Ga2Se | orthorhombic | Cmcm | a 9.692 b 15.631 c 12.698 | band gap 3.27 eV | [6] | |||||
{[Ni(tepa)]2SO4}[Ni(tepa)(Ga4S6(SH)4)] tepa = tetraethylenepentamine | monoclinic | C2/c | a 38.829 b 12.290 c 22.471 β 98.398° | [5] | ||||||
cupric selenogallate | CuGaSe2 | 291.186 | tetragonal | a = 5.5963 c = 11.0036 Z=4 | 344.617 | 5.612 | metallic grey | [15] | ||
ZnGa2Se4 | tetragonal | I42m | [16] | |||||||
ZnGa2Se4 | cubic | Fm3m | >15.5GPa | [16] | ||||||
Na3Zn2Ga2Se4 | 519.90 | tetragonal | I41acd | a 13.481 c 19.26 Z=16 | 3500 | 3.946 | red | [17] | ||
Na6Zn3Ga2Se9 | monoclinic | C2/c | a 16.71 b 16.69 c 13.79 β 101.346° | [18] | ||||||
KZn4Ga5Se12 | R3 | SHG | [19] | |||||||
LiGaGe2Se6 | 695.60 | orthorhombic | Fdd2 | a 12.5035 b 23.710 c 7.1177 | 2110.1 | 4.336 | brown; band gap 2.64 eV; mp=710 °C | [20][21] | ||
Li2Ga2GeS6 | orthorhombic | Fdd2 | a=12.0796 b=22.73 c=6.84048 | [22] | ||||||
NaGaGe3Se8 | monoclinic | P21/c | a 7.233 b 11.889 c 17.550 β 101.75° | [23] | ||||||
KGaGeSe4 | 497.25 | monoclinic | P21/c | a=7.3552 b=12.4151 c=17.6213 β =97.026 Z=8 | 1597.02 | 4.136 | yellow | [24] | ||
RbGaSe2 | 313.11 | monoclinic | C2/c | a = 10.954, b = 10.949, c = 16.064, β = 99.841° Z=16 | 1898.2 | 4.382 | colourless; mp=930 °C; ∞2[Ga4Se88−] layers of supertetrahedra; | [1] | ||
RbZn4Ga5Se12 | R3 | SHG | [19] | |||||||
RbGaGeSe4 | 543.62 | orthorhombic | Pnma | a=17.5750 b=7.4718 c=12.4449 Z=8 | 1634.23 | 4.419 | orange | [24] | ||
AgGaSe2 | tetragonal | I42d | a = 5.9921, c = 10.883 | 5.71 | transparent from 0.71 to 18 µm; band gap ~1.7 | [25] | ||||
AgGa5Se8 | P42m | a=5.50 c=11.04 | band gap 2.1 eV | [25] | ||||||
Ag9GaSe6 | P213 | band gap 0.56 eV | [25] | |||||||
Ag9GaSe6 | cubic | F43m | a=11.126 | [25] | ||||||
LixAg1–xGaSe2 (x = 0.2–0.8) | tetragonal | I42d | SHG | [4] | ||||||
Na0.45Ag0.55Ga3Se5 | trigonal | R32 | a=13.466 c=16.495 Z=12 | 2590.5 | SHG 1.9 × AGS | [26] | ||||
KAg3Ga8Se14 | 2025.91 | monoclinic | Cm | a 12.8805 b 11.6857 c 9.6600 β 115.998° Z=2 | 1306.87 | 5.148 | orange | [27] | ||
AgGaGe5Se12 | red; transparent for 0.6–16.5 μm; band gap 2.2 eV | [28] | ||||||||
CdGa2Se4 | tetragonal | I4 | a=5.3167 c=10.2858 Z=2 | semiconductor | [29][30] | |||||
CdGa2Se4 | cubic | F43m | a=5.64 Z=4 | >21 GPa metallic | [30] | |||||
CdGa2Se4 | cubic | Fm3m | a=5.03 Z=4 | 4-7.4 GPa | [30] | |||||
KCd4Ga5Se12 | trigonal | R3 | a 14.362 b 14.362 c 9.724 | [31] | ||||||
RbCd4Ga5Se12 | trigonal | R3 | a 14.4055 b 14.4055 c 9.7688 | band gap 2.19 eV; SHG=19×AgGaS2 | [32][31] | |||||
InGaSe2 | tetragonal | I4/mcm | a = 8.051, c = 6.317 Z=4 | [33] | ||||||
SnGa4Se7 | 622.08 | monoclinic | Pc | a=7.269 b=6.361 c=12.408 β =106.556 Z=2 | 549.9 | 3.757 | light yellow;SHG 3.8 × AgGaS2 | [34] | ||
KGaSnSe4-cP84 | 543.35 | cubic | Pa3 | a=13.5555 Z=12 | 2490.8 | 4.347 | red | [24] | ||
RbGaSnSe4-cP84 | cubic | Pa3 | a=13.7200 Z=12 | 589.72 | 4.550 | [24] | ||||
RbGaSn2Se6 | 866.33 | trigonal | R3 | a=10.4697 c=9.476 Z=3 | 899.5 | 4.798 | deep red | [35] | ||
SnGa2GeSe6 | 804.48 | orthorhombic | Fdd2 | a = 47.195, b = 7.521, c = 12.183, Z = 16 | 4324 | 4.943 | red; SHG 1.7 × AgGaS2 | |||
CsGaSe2-mC64 | monoclinic | C2/c | a = 11.043, b = 11.015, c = 16.810, β = 99.49°, Z = 16 | 2016.7 | light grey; layers of supertetrahedra ∞2[Ga4Se84–]; band gap 3.5 eV | [36] | ||||
CsGaSe2-mC16 | monoclinic | C2/c | a = 7.651, b = 12.552, c = 6.170, β = 113.62°, Z = 4 | 542.9 | over 610 °C; chains ∞1[GaSe2–] | [36] | ||||
CsGaSe3 | monoclinic | P21/c | a=7.727, b=13.014, c=6.705, β=106.39°, Z=4 | red; chains; band gap 2.25 eV | [37] | |||||
Cs2Ga2Se5 | 800.07 | monoclinic | C2/c | a = 15.3911, b = 7.3577, c = 12.9219, β = 126.395°, Z = 4 | 1177.89 | 4.51 | yellow; ∞1[Ga2Se3(Se2)2–] band gap 1.95 eV | [38] | ||
Cs4Ga6Se11 | triclinic | P1 | a=9.707 b=9.888 c=16.780 α=76.425° β=77.076° γ=60.876° | 1356.3 | ∞1[Ga6Se11]4– | [39] | ||||
Cs6Ga2Se6 | monoclinic | P21/c | a=8.480 b=13.644 c=11.115 β =126.22 Z=2 | mp=685 °C; isolated double tetrahedra [Ga2Se6]6− | [40] | |||||
Cs8Ga4Se10 | triclinic | P1 | a= 7.870 b=9.420 c=11.282 α=103.84° β=93.43° γ=80.88° Z=1 | 4.42 | tetrameric | [41] | ||||
Cs10Ga6Se14 | monoclinic | C2/m | a=18.233 b=12.889 c=9.668 β=108.20 Z=2 | 4.39 | hexameric | [41] | ||||
(Cs6Cl)6Cs3[Ga53Se96] | 16671.51 | trigonal | R3m | a = 11.990, c = 50.012 Z=1 | 6226.5 | 4.446 | yellow; band gap 2.74 eV | [42] | ||
CsZn4Ga5Se12 | trigonal | R3 | [19] | |||||||
CsGaGeSe4 | 591.06 | orthorhombic | Pnma | a=17.7666 b=7.5171 c=12.6383 Z=8 | 1687.9 | 4.652 | white | [24] | ||
Cs2Ge3Ga6Se14 | 2007.41 | P3m1 | a=7.6396 c=13.5866 Z=1 | 686.72 | 4.854 | black | [43] | |||
CsAgGa2Se4 | monoclinic | P21/c | a=11.225, b=7.944, c=21.303, β=103.10, Z=8 | 1850.3 | layered | [44] | ||||
CsCd4Ga5Se12 | trigonal | R3 | a 14.4204 b 14.4204 c 9.7803 | band gap 2.21 eV; SHG=16×AgGaS2 | [32][31] | |||||
BaGa4Se7 | monoclinic | Pc | a = 7.625, b = 6.511, c = 14.702, β = 121.24° | transparent between 0.47 and 18.0 μm; melts 968 °C; SHG | [45][46] | |||||
Ba4Ga2Se8 | 132.48 | monoclinic | P21/c | a=13.2393 b=6.4305 c=20.6432 β =104.3148 Z=4 | 1702.90 | 5.151 | black air stable; band gap 1.51 eV | [47][48] | ||
Ba5Ga2Se8 | orthorhombic | Cmca | a 23.433 b 12.461 c 12.214 | band gap 2.51 eV | [49] | |||||
Ba5Ga4Se10 | 1755.18 | tetragonal | I4/mcm | a = 8.752, c = 13.971 Z = 2 | 1070.2 | 5.447 | red; bicyclic ring with Ga-Ga bridge; band gap 2.20 eV | [50] | ||
Ba3GaSe4Cl | orthorhombic | Pnma | a 12.691 b 9.870 c 8.716 | [51] | ||||||
Ba3GaSe4Br | orthorhombic | Pnma | a = 12.8248, b = 9.9608, c = 8.7690 Z = 4 | band gap 1.7 eV | [52] | |||||
LiBa4Ga5Se12 | 1852.42 | tetragonal | P421c | a 13.591 c 6.515 Z=2 | 1203.3 | 5.113 | yellow; band gap 2.44 eV; SHG 1.7×AgGaS2 | [32][53] | ||
NaBaGaSe3 | orthorhombic | Pnma | a 20.46 b 9.177 c 7.177 | 1347 | colourless | [54] | ||||
(Na0.60Ba0.70)Ga2Se4 | tetragonal | I4cm | a 7.9549 c 6.2836 | 397.6 | 4.725 | pale yellow | [55] | |||
KBa3Ga5Se10Cl2 | tetragonal | I4 | a 8.6341 c 15.644 | 1166.2 | band gap 2.04 eV; SHG=10×AgGaS2 | [32][56] | ||||
MnBa4Ga4Se10Cl2 | tetragonal | I4 | 8.5858 c 15.7739 | band gap 2.8 eV; SHG=30×AgGaS2 | [32][57] | |||||
FeBa4Ga4Se10Cl2 | tetragonal | I4 | a 8.578 c 15.717 | band gap 1.88 eV | [32][57] | |||||
CoBa4Ga4Se10Cl2 | tetragonal | I4 | a 8.572 c 15.716 | band gap 2.02 eV | [32][57] | |||||
Cu0.5Ba4Ga4.5Se10Cl2 | tetragonal | I4 | a 8.559 c 15.778 | band gap 2.6 eV; SHG=39×AgGaS2 | [32][57] | |||||
CuBa4Ga5Se12 | P421c | a = 13.598, c = 6.527, Z = 2 | band gap 1.45 eV; SHG=3×AgGaS2 | [32][58] | ||||||
ZnBa4Ga4Se10Cl2 | tetragonal | I4 | a 8.561 c 15.757 | band gap 3.08 eV; SHG=59×AgGaS2 | [32][57] | |||||
Ba10Zn7Ga6Se26 | tetragonal | I42m | a 11.2907 c 21.760 Z=2 | 2774.0 | 5.151 | yellow | [59] | |||
Ba4Ga4GeSe12 | 1848.35 | tetragonal | P421c | a=13.5468 c=6.4915 Z=2 | 1191.29 | 5.153 | orange yellow; band gap 2.18 eV | [47][60] | ||
BaGa2GeSe6 | R3 | [61] | ||||||||
RbBa3Ga5Se10Cl2 | tetragonal | I4 | a 8.6629 c 15.6379 | band gap 2.05 eV; SHG=20×AgGaS2 | [32][56] | |||||
Ba2GaYSe5 | triclinic | P1 | a 7.2876Å b 8.6597Å c 9.3876Å, α 103.51° β 103.04° γ 107.43° | [62] | ||||||
Ba4AgGaSe6 | 1199.44 | orthorhombic | Pnma | a=9.1006 b=4.472 c=17.7572 Z=2 | 722.71 | 5.512 | dark red; air stable; band gap 2.50 | [63] | ||
Ba4AgGa5Se12 | 1953.35 | tetragonal | P421c | a 13.6544 c 6.5215 Z=2 | 1215.9 | 5.335 | yellow | [53] | ||
Ba7AgGa5Se15 | trigonal | P31c | a 10.0467 c 18.689 | band gap 2.60 eV | [64] | |||||
CdBa4Ga4Se10Cl2 | tetragonal | I4 | a 8.611 c 15.805 | band gap 3.05 eV; SHG=52×AgGaS2 | [32][57] | |||||
Ba5CdGa6Se12 | 2401.82 | orthorhombic | Ama2 | a=24.2458 b=19.1582 c=6.6208 Z=4 | 3075.4 | 5.187 | yellow; air stable; band gap 2.60 eV; mp=866 °C | [47][65] | ||
BaGa2SnSe6 | 869.23 | trigonal | R3 | a = 10.145, c = 9.249 Z = 3 | 824.4 | 5.253 | red; SHG 5.2×AgGaS2 | [66] | ||
Ba4Ga4SnSe12 | 1894.45 | tetragonal | P421c | a 13.607 c 6.509 Z=2 | 1205.2 | 5.221 | red; band gap 2.16 eV | [67] | ||
Ba6Ga2SnSe11 | 1950.73 | monoclinic | P21/c | a 18.715 b 7.109 c 19.165, β 103.29° | 2481.5 | 5.221 | red; bad gap 1.99 eV | [67] | ||
Ba2AsGaSe5 | 814.12 | orthorhombic | Pnma | a = 12.632, b = 8.973, c = 9.203, Z = 4 | 1043.1 | 5.184 | black | [68] | ||
CsBa3Ga5Se10Cl2 | tetragonal | I4 | a 8.734 c 15.697 | 1197.6 | band gap 2.08 eV; SHG=100×AgGaS2 | [32][56] | ||||
NaLaGa4Se8 | orthorhombic | Fddd | a 21.1979 b 21.1625 c 12.7216 | [69] | ||||||
La3MnGaSe7 | 1094.11 | hexagonal | P63 | a 10.5894 c 6.3458 Z=2 | 616.25 | 5.896 | black | [70] | ||
La3FeGaSe7 | hexagonal | P63 | a=10.5042 c=6.3496 | 606.74 | [71] | |||||
La3CoGaSe7 | hexagonal | P63 | a=10.5104 c=6.3708 | 609.48 | [71] | |||||
La3NiGaSe7 | hexagonal | P63 | a=10.4826 c=6.3964 | 608.71 | [71] | |||||
La3CuGaSe7 | 1102.71 | hexagonal | P63 | a=10.626 c=6.392 Z=2 | 626.0 | 5.859 | [47] | |||
La3ZnGaSe7 | 1104.54 | hexagonal | P63 | a=10.630 c=6.374 Z=2 | 623.7 | 5.881 | [47] | |||
La3Ag0.6GaSe7 | hexagonal | P63 | a=10.6, c=6.4 Z=2 | [72] | ||||||
La3CdGaSe7 | hexagonal | P63 | a=10.606 c=6.380 Z=2 | 621.5 | 6.153 | [47] | ||||
Ba2GaLaSe5 | orthorhombic | Pnma | a 12.5049 b 9.6288 c 8.7355 | [73] | ||||||
NaCeGa4Se8 | orthorhombic | Fddd | a 21.141 b 21.138 c 12.712 | [69] | ||||||
Ce3CuGaSe7 | 1106.34 | hexagonal | P63 | a=10.6007 c=6.3775 Z=2 | 620.65 | 5.920 | [47] | |||
Ba2GaCeSe5 | orthorhombic | Fddd | a 12.494 b 9.599 c 8.738 | [73] | ||||||
Pr3CuGaSe7 | 1108.71 | hexagonal | P63 | a=10.4181 c=6.3743 Z=2 | 599.16 | 6.146 | [47] | |||
NaNdGa4Se8 | orthorhombic | Fddd | a 21.015 b 21.045 c 12.709 | [69] | ||||||
Nd3FeGaSe7 | hexagonal | P63 | a 10.2453 c 6.4076 Z=2 | 582.47 | [74] | |||||
Nd3CoGaSe7 | hexagonal | P63 | a=10.2296 c=6.4272 | 582.47 | [71] | |||||
Nd3NiGaSe7 | hexagonal | P63 | a=10.2117 c=6.4066 | 578.57 | [71] | |||||
Nd3CuGaSe7 | 1118.70 | hexagonal | P63 | a=10.3426 c=6.3869 Z=2 | 591.7 | 6.279 | [47] | |||
Ba2GaNdSe5 | triclinic | P1 | a 7.29Å b 8.7914Å c 9.47Å, α 103.77° β 102.91° γ 107.72° | [62] | ||||||
SmGa2Se4 | rhombic | a=21.34, b=21.60, c=12.74 | [75] | |||||||
Ba2GaSmSe5 | triclinic | P1 | a 7.3017Å b 8.7635Å c 9.4554Å, α 103.672° β 102.963° γ 107.637° | [62] | ||||||
Gd3FeGaSe7 | hexagonal | P63 | a 10.0762 c 6.4265 Z=2 | [74] | ||||||
Ba2GaGdSe5 | triclinic | P1 | a 7.2834Å b 8.7062Å c 9.4079Å, α 103.65° β 103.02° γ 107.52° | [62] | ||||||
Dy3FeGaSe7 | hexagonal | P63 | a 9.9956Å c 6.398 Z=2 | [74] | ||||||
Ba2GaDySe5 | triclinic | P1 | a 7.2772Å b 8.6543Å c 9.3792Å, α 103.53° β 103.07° γ 107.43° | [62] | ||||||
Ba2GaErErSe5 | triclinic | P1 | a 7.2721Å b 8.6258Å c 9.3621Å, α 103.41° β 103.13° γ 107.39° | [62] | ||||||
Ba2GaTbSe5 | triclinic | P1 | a 7.309 b 8.719 c 9.433, α 103.548° β 103.039° γ 107.520° | [73] | ||||||
Ba2GaHoSe5 | triclinic | P1 | a 7.2964 b 8.670 c 9.406, α 103.482° β 103.049° γ 107.423° | [73] | ||||||
Ba2GaTmSe5 | triclinic | P1 | a 7.2884 b 8.6376 c 9.3823, α 103.429° β 103.075° γ 107.360° | [73] | ||||||
Ba2GaYbSe5 | triclinic | P1 | a 7.2864 b 8.6257 c 9.3716, α 103.4154° β 103.0369° γ 107.3396° | [73] | ||||||
Ba2GaLuSe5 | triclinic | P1 | a 7.2829 b 8.6120 c 9.368, α 103.362° β 103.051° γ 107.308° | [73] | ||||||
HgGa2Se4 | [76] | |||||||||
KHg4Ga5Se12 | 2137.58 | trigonal | R3 | a 14.3203 b 14.3203 c 9.7057 Z=3 | 1723.7 | 6.178 | band gap 1.61 eV; SHG=20×AgGaS2 | [32][77][78] | ||
TlGaSe2 | 432.01 | monoclinic | C2/c | a=10.760 b=10.762 c=15.626 β=100.19 Z=16 | 1780.8 | 6.445 | black; layers of supertetrahedra; mp 804 °C; band gap 1.87 eV | [79] | ||
TlGaGeSe4 | 662.52 | orthorhombic | Pnma | a=17.4742 b=7.4105 c=11.9406 Z=8 | 1546.22 | 5.692 | [24] | |||
Tl2Ga2GeSe6 | tetragonal | I4/mmc | a=8.0770 c=6.2572 Z=4 | [80] | ||||||
Tl0.8Ga0.8Ge1.2Se4-mC112 | 622.22 | monoclinic | C2/c | a=13.5831 b=7.4015 c=30.7410 β =96.066 Z=16 | 3073.3 | 5.379 | red | [24] | ||
TlGaSnSe4-mP56 | 701.04 | monoclinic | P21/c | a=7.501 b=12.175 c=18.203 β =97.164 Z=8 | 1649.4 | 5.646 | red | [24] | ||
TlGaSnSe4-cP84 | 708.62 | cubic | Pa3 | a=13.4755 Z=12 | 2447.0 | 5.770 | red | [24] | ||
Tl2Ga2SnSe6 | tetragonal | I4/mmc | a=8.095 c=6.402 Z=4 | [80] | ||||||
TlGaSn2Se6 | R3 | a=10.3289 c=9.4340 | 871.64 | 5.6301 | dark grey in bulk; maroon powder | [81] | ||||
PbGa2Se4 | 662.47 | orthorhombic | Fddd | a =12.73 b=21.26 c=21.55 Z=32 | 5830 | 6.036 | yellow to red; mp 780 °C; band gap 1.83 eV | [82][83] | ||
Pb0.72Mn2.84Ga2.95Se8 | hexagonal | P6 | a 17.550 c 3.8916 | [84] | ||||||
PbGa2GeSe6 | orthorhombic | Fdd2 | mp 720 °C biaxial (−) | [61] | ||||||
Pb4Ga4GeSe12 | tetragonal | P421c | a = 13.064 c = 6.310 Z=2 | [85] | ||||||
Ba2GaBiSe5 | orthorhombic | Pnma | a=12.691 b=9.190 c=9.245 Z=4 | 1078.2 | 5.841 | yellow | [86] |
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