# Selenidogermanate

Selenidogermanates are compounds with anions with selenium bound to germanium. They are analogous with germanates, thiogermanates, and telluridogermanates.

## List

| name | formula | formula weight | crystal system | space group | cell dimensions | volume | density | comment |
| | GeSe$_2$ | | | | | | | |
| | Ge$_4$Se$_9$ | | orthorhombic | Pca2$_1$ | a 17.8204 b 7.0029 c 12.0854 | | | |
| | Li$_3$Ge$_3$Se$_6$ | | triclinic | P1 | a 6.7728 b 8.6804 c 10.6300 α 74.519° β 76.334° γ 69.185° | | | |
| | [Li$_4$(H$_2$O)$_{16}$][Ge$_4$Se$_{10}$]·4.33H$_2$O | | monoclinic | P2$_1$ | a=10.2246 b=20.4503 c=28.7242 β=97.850° | | | |
| | {Li$_4$(thf)$_{12}$}Ge$_4$Se$_{10}$ | | monoclinic | C2/c | a=24.845 b =12.692 c=25.625 β=119.00° | | | |
| | [Li$_2$(H$_2$O)$_8$][MnGe$_4$Se$_{10}$] | | tetragonal | I4 | a=9.103 c =15.130 | | | |
| | [NH$_4$]$_2$[H$_2$N(CH$_3$)$_2$]$_2$Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 13.503 b 7.777 c 19.583 β 106.03° | | | |
| | (N$_2$H$_5$)$_4$Ge$_2$Se$_6$ | | tetragonal | I4$_1$cd | a = 12.708 c = 21.955 Z = 8 | | | |
| | [NEt$_4$]$_2$[enH]$_2$[Ge$_2$Se$_6$] | | triclinic | P1 | a = 7.805, b = 10.747, c = 11.445, α = 110.33°, β = 97.19°, γ = 92.62° V = | 889.0 | | |
| | tetrakis(Tripropylammonium) hexakis(μ$_2$-selenido)-tetrakis(selenoxo)-tetra-germanium(iv) | | monoclinic | P2$_1$/c | a 18.759 b 16.104 c 21.211 β 108.52° | | | |
| | (C$_2$C$_1$Im)$_4$[Ge$_4$Se$_{10}$] | 1524.63 | tetragonal | P42/n | a=13.675 c=12.042 Z=2 | 2251.9 | 2.249 | yellowish |
| 1-Ethyl-3-methyl-imidazolium | (C$_2$C$_1$Im)$_6$[Ge$_8$Se$_{19}$]; | 2747.96 | triclinic | P1 | a=10.2607 b=17.6852 c=21.994 α=100.889 β= 95.600 γ=105.240 Z=2 | 3735.5 | 2.443 | yellowish |
| | (C$_2$C$_1$Im)$_6$[Ge$_8$Se$_{19}$] | 2747.96 | monoclinic | P12$_1$/c1 | a=22.206 b=9.544 c=36.823 β=105.37 Z=4 | 7524.8 | 2.426 | yellow |
| | (C$_2$C$_1$Im)$_8$[Ge$_{16}$Se$_{36}$] | 4893.34 | monoclinic | C12/c1 | a=20.527 b=28.744 c=19.720 β=94.640 Z=4 | 11597 | 2.803 | yellow |
| | 2(C$_2$C$_1$Im)$_6$[Ge$_{12}$Se$_{27}$] | 7340.01 | monoclinic | P12$_1$/n1 | a=14.834 b=30.647 c=20.465 β=107.603 Z=2 | 8868 | 2.749 | red |
| | (C$_4$C$_1$im)$^+$$_2${[Sn$^{II}$(Ge$^{IV}$$_4$Se$_{10}$)]$^{2−}$} | | monoclinic | P2$_1$/n | a 9.9685 b 26.2588 c 13.9736 β 98.766° | | | |
| | Na$_2$GeSe$_3$ | | monoclinic | P2$_1$/c | a =7.097 b=16.068 c=6.073 β =113.69° Z=4 | | 3.72 | yellow |
| | Na$_4$GeSe$_4$ | | orthorhombic | Pnma | a = 28.518 b=9.447 c=7.128 Z=8 | | | orange-yellow |
| | Na$_4$[Ge$_4$Se$_{10}$] | | orthorhombic | Cmcm | a=13.507 b=13.363 c=11.034 Z=4 | 1881.6 | | |
| | Na$_4$Ge(Se$_2$)$_4$ | | | | | | | red |
| | Na$_6$Ge$_2$Se$_6$ | | monoclinic | P2$_1$ | a = 8.367 b = 11.924 c = 8.158 β = 118.6° | | | |
| | Na$_6$Ge$_2$Se$_7$ | | monoclinic | C2/c | a=9.451 b=10.914 c=15.874 β=104.7° | | 3.51 | yellow |
| | Na$_8$Ge$_4$Se$_{10}$ | | triclinic | P1 | a = 7.074 b = 8.098 c = 10.657 α = 73.4° β = 70.8° γ= 81.7° | | | |
| | Na$_8$Ge$_4$Se$_{10}$ | | monoclinic | P2$_1$/c | a = 13.104 b=12.057 c=14.101 β= 92.9° Z=4 | | 3.77 | orange yellow |
| | [Na$_4$(H$_2$O)$_{14}$][GeSe$_4$] | | monoclinic | C2 | a = 12.862, b = 11.205, c = 8.141 Å, β = 107.40° | | | |
| | Na$_4$Ge$_2$Se$_6$ · 16 H$_2$O | | monoclinic | P2$_1$/c | a = 9.894 b = 11.781 c = 12.225 β = 92.90° Z = 2 | | | |
| | Na$_6$Ge$_2$Se$_6$ · 4 CH$_3$OH | | | | | | | |
| | Na$_3$GeSe$_3$Br | | | | | | | |
| | Mg$_2$GeSe$_4$ | 437.05 | orthorhombic | Pnma | a 13.50 b 7.85 c 6.37 Z=4 | 675 | 4.302 | yellow |
| | Li$_2$MgGeSe$_4$ | | orthorhombic | Pmn2$_1$ | a = 8.2961 b = 7.0069 c = 6.6116, Z = 2 | 384.33 | 3.686 | yellow |
| | Na$_4$MgGe$_2$Se$_6$ | 735.21 | monoclinic | C2 | a 7.722 b 11.994 c 7.096 β 106.66° Z=2 | 629.7 | 3.878 | orange-yellow |
| | K$_2$GeSe$_4$ | | monoclinic | P2$_1$/c | a=11.989 b=8.275 c=8.915 β=106.38° Z=4 | 848.8 | 3.65 | orange |
| | K$_2$Ge$_4$Se$_8$ | | monoclinic | P2$_1$/c | a=7.3752 b=12.239 c=17.468 β=96.102°, Z=4 | 1156.8 | | band gap 1.8 eV |
| | K$_4$[GeSe$_4$] | | cubic | P43n | a=13.1893 | | | |
| | [K$_4$(H$_2$O)$_4$][GeSe$_4$] | | triclinic | P1 | a 7.8695 b 7.9576 c 12.314, α 80.24° β 87.66° γ 74.07° | | | |
| | [K$_4$(H$_2$O)$_3$][Ge$_2$Se$_6$] | | monoclinic | P2$_1$/c | a 14.583 b 8.3858 c 14.17 β 96.27° | | | |
| | [K$_4$(H$_2$O)$_3$][Ge$_4$Se$_{10}$] | | | | | | | |
| | K$_6$Ge$_2$Se$_6$ | | monoclinic | C2/c | a=9.076 b=12.851 c=8.480 β=116.76° | | | |
| | [V(en)$_2$(ea)]$_2$[Ge$_2$Se$_6$] | | monoclinic | P2$_1$/n | a 8.733 b 13.432 c 13.583 β 91.486° Z=4 | 1592.8 | 2.256 | red |
| | [V(teta)(ea)]$_2$[Ge$_2$Se$_6$] | | monoclinic | P2$_1$/n | a 9.0574 b 14.209 c 13.1189° β 91.384° Z=4 | 1687.8 | 2.232 | red |
| | [V$_2$(en)$_6$(μ-O)][Ge$_2$Se$_6$] | | triclinic | P1 | a 9.448 b 10.178 c 10.436 α 109.090° β 104.169° γ 111.520° Z=1 | 802.7 | 2.271 | brown |
| | Na$_2$MnGe$_2$Se$_6$ | 1439.72 | tetragonal | I4/mcm | a = 7.772 c = 19.077 Z = 2 | 1152.3 | 4.150 | @153K band gap 1.93 eV; brown |
| | Na$_8$Mn$_2$(Ge$_2$Se$_6$)$_2$ | | monoclinic | C2 | a 7.727 b 11.943 c 7.085 β 106.682° | | | band gap 1.95 eV |
| | K$_2$MnGe$_2$Se$_6$ | | tetragonal | I4/mcm | a =8.1315 c =18.877 | | | |
| | [Mn(en)$_3$]$_2$Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 9.058 b 16.319 c 11.628 β 92.264° | | | |
| | (enH$_2$)[{Mn(en)$_2$(enH)}$_2$(μ-en)](Ge$_2$Se$_7$)$_2$ | | orthorhombic | Pbca | a 15.816 b 13.638 c 24.677 | | | |
| | [Mn(dien)$_2$]$_2$Ge$_2$Se$_7$ | | monoclinic | P2$_1$/c | a 16.489 b 14.524 c 15.860 β 101.03° | | | |
| | [{Mn(tepa)}$_2$(μ-Ge$_2$Se$_6$)] | | tetragonal | I 4$_1$/a | a=26.387 c 9.9435 | | | |
| | [K$_2$(H$_2$O)$_3$][MnGe$_4$Se$_{10}$] | | tetragonal | I4 | a=8.988 c=15.49 | | | |
| Bis(trimethylammonium) decaselenidotetragermanatomanganate(II) | [(CH$_3$)$_3$NH]$_2$[MnGe$_4$Se$_{10}$] | | tetragonal | I4 | a 9.559 c 14.808 | | | |
| | [Fe(dien)$_2$]$_2$Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 12.426 b 9.312 c 15.385 β 101.422° | | | |
| | [{Fe(tepa)}$_2$(μ-Ge$_2$Se$_6$)] | | tetragonal | I 4$_1$/a | a 26.285 c 9.882 | | | |
| | K$_2$FeGe$_3$Se$_8$ | | monoclinic | P2$_1$ | a 7.409 b 12.268 c 34.974 β 96.04° | | | band gap 1.95 eV |
| | [Ni(dien)$_2$]$_2$Ge$_2$Se$_5$(Se$_2$) | | monoclinic | P2$_1$/c | a 15.741 b 14.463 c 16.390 β 103.03° | | | |
| | [{Ni(tepa)}$_2$(μ-Ge$_2$Se$_6$)] | | tetragonal | I4$_1$/a | a=26.001 c=9.708 | | | |
| triethylenetetramine | [Ni(teta)$_2$]$_2$Ge$_4$Se$_{10}$·0.5H$_2$O | | monoclinic | P2$_1$/c | a 21.202 b 13.345 c 20.872 β 107.46° | | | |
| | (enH$_2$)$_5$[Cu$_{16}$Ge$_6$Se$_{19}$(Se$_2$)$_6$]·en | | cubic | Pa3 | a=a 20.8113 Z=12 | | | |
| | [(CH$_3$)$_2$NH$_2$]$_6$[Cu$_8$Ge$_6$Se$_{19}$]·0.25H$_2$O | | | Im3 | a=22.43070 | | | |
| | [NH$_3$CH$_3$]$_{0.75}$Cu$_{1.25}$GeSe$_3$ | | tetragonal | P42$_1$m | a=12.9345 c 8.9057 | | | |
| decakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexakis(μ-cyanido)-nonatriacontakis(μ-selenido)-selenido-hepta-copper(i)-hexadeca-germanium(iv)-penta-sodium | (C$_2$C$_1$Im)$_{10}$[Na$_5$(CN)$_6$@Cu$_6$(Ge$_4$Se$_{10}$)$_4$(Cu)] | | triclinic | P1 | a 19.2790 b 20.4268 c 23.2357 α 105.275° β 93.657° γ 115.206° Z=2 | 7822.6 | 2.610 | red |
| decakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexakis(μ-cyanido)-nonatriacontakis(μ-selenido)-selenido-hepta-copper(i)-hexadeca-germanium(iv)-penta-sodium | (C$_2$C$_1$Im)$_{10}$[Na$_5$(CN)$_6$@Cu$_6$(Ge$_4$Se$_{10}$)$_4$(Cu)] | 6147.36 | triclinic | P1 | a 20.3454 b 20.8202 c 23.120 α 72.172° β 68.184° γ 60.802° Z=2 | 7842.1 | 2.472 | red |
| 1,2-dap = 1,2-diaminopropane | [Mn(1,2-dap)$_2$][Cu$_2$GeSe$_5$] | | monoclinic | P2$_1$/c | a 6.673 b 18.210 c 15.070 β 96.078° | | | |
| | [Cu$_2$GeSe$_5$][Mn(Hen)$_2$(en)] | | monoclinic | P2$_1$/c | a 9.6327 b 20.6934 c 10.3704 β 100.646° | | | band gap 1.69 eV |
| tren = tris(2-aminoethyl)amine | [Ni(tren)(en)]$_2$∙[Cu$_2$GeSe$_5$]$_2$ | | orthorhombic | P2$_1$2$_1$2$_1$ | a 9.8574 b 13.0311 c 32.77 | | | |
| | [Ni(dien)$_2$]$_2$Ge$_2$Se$_5$(Se$_2$) | | monoclinic | P2$_1$/c | a=15.741 b=14.463 c=16.390 β=103.03(3)° | | | |
| | {Ni(tepa)}$_2$(μ-Ge$_2$Se$_6$) | | tetragonal | I4$_1$/a | a=26.001 c=9.7079 | | | |
| | [NH$_3$CH$_3$]$_{0.75}$Cu$_{1.25}$GeSe$_3$ | | tetragonal | P42$_1$m | a 12.9345 c 8.9057 | | | |
| | Na$_2$ZnGe$_2$Se$_6$ | | tetragonal | I4/mcm | a 7.757 c 18.734 | | | band gap 2.36 eV |
| | Cu$_2$ZnGeSe$_4$ | | tetragonal | I4 | | | | band gap 1.38; air stable; SHG 43 pm/V at λ = 2900 nm |
| | Cu$_4$ZnGe$_2$Se$_7$ | | monoclinic | C2 | a 12.3443 b 5.6195 c 8.7904 β 98.693° | | | band gap 0.91 eV; air stable |
| N-(2-aminoethyl)piperazine | (H$_2$NC$_4$H$_8$NCH$_2$CH$_2$NH$_2$)(HNCH$_2$CH$_2$NH$_2$)$_3$Zn$_2$Ge$_2$Se$_8$ | | orthorhombic | P2$_1$2$_1$2 | a=18.928 b=30.849 c=6.3954 | | | |
| | [NH$_4$]$_2$Ga$_4$Se$_8$Ge$_4$ | | monoclinic | P2$_1$/c | | | | |
| | NaGaGe$_3$Se$_8$ | | monoclinic | P2$_1$/c | a 7.233 b 11.889 c 17.550 β 101.75° Z=4 | 1477.5 | 4.235 | orange |
| | K$_2$Ga$_2$Ge$_2$Se$_8$ | | monoclinic | P2$_1$/c | a 7.3552 b 12.4151 c 17.6213 β 97.026° Z=4 | 1597.02 | 4.136 | yellow |
| | K$_3$Ga$_3$Ge$_7$Se$_{20}$ | 2413.79 | monoclinic | P2$_1$/c | a 7.0520 b 39.033 c 6.9488 β 90.433° Z=2 | 1912.67 | 4.191 | orange |
| | K$_3$Ga$_3$(Ge$_{4.95}$Si$_{2.05}$)Se$_{20}$ | | monoclinic | Pc | a 7.0101 b 38.928 c 6.9594 β 90.531° | | | |
| | Rb$_2$GeSe$_4$ | 559.4 | monoclinic | P2/m | a=7.390 b=3.704 c=8.623 β=104.87 Z=1 | 228.1 | 4.07 | orange-brown |
| | Rb$_4$Ge$_4$Se$_{10}$ | | monoclinic | C2/c | a = 16.095 b = 16.09 c = 9.390 β= 105.79° | | | |
| | Rb$_4$Ge$_4$Se$_{12}$ | | orthorhombic | Pna2$_1$ | a 14.870 b 13.800 c 12.445 Z=4 | 2554 | 4.109 | red |
| | Rb$_4$Ge$_4$Se$_{10}$ • CH$_3$OH | 1453.9 | monoclinc | C2 | a=17.099 b=9.287 c=9.503 β=118.49 Z=2 | 1326.3 | 3.64 | yellow |
| | Rb$_2$MnGe$_3$Se$_8$ | | orthorhombic | P2$_1$2$_1$2$_1$ | a 7.2756 b 12.1668 c 16.8351 | | | |
| | Rb$_2$[MnGe$_4$Se$_{10}$]·3H$_2$O | | tetragonal | | | | | |
| | Rb$_3$(AlSe$_2$)$_3$(GeSe$_2$)$_7$ | | monoclinic | P2$_1$/c | a = 7.0580 b = 39.419 c = 7.0412 β = 90.360° Z = 2 | | | #190K; band gap 2.4 eV |
| | RbGaGeSe$_4$ | | orthorhombic | Pnma | a=17.5750 b= 7.4718 c= 12.4449 Z=8 | 1634.23 | 4.419 | colourless; air sensitive |
| | γ-Sr$_2$GeSe$_4$ | | orthorhombic | Ama2 | a = 10.284 b = 10.543 c = 7.411 Z=4 | | | |
| Strontium Selenogermanate(III) | Sr$_2$Ge$_2$Se$_5$ | | monoclinic | P2$_1$/n | a=8.445 b=12.302 c=9.179 β=93.75° Z=4 | | | Ge-Ge bond |
| tepa=tetraethylenepentamine | (H$_2$peha)[Y$_2$(μ-OH)$_2$(tepa)$_2$Cl$_2$]{[Y$_2$(μ-OH)$_2$(tepa)$_2$Cl]$_2$(μ-Ge$_2$Se$_6$)}[Ge$_2$Se$_6$]Cl$_2$ | | triclinic | P1 | a 9.1861 b 17.3698 c 19.5422 α 103.218° β 95.414° γ 101.439° | | | |
| | Y$_2$(tepa)$_2$(μ-OH)$_2$(μ-Ge$_2$Se$_6$)]·H$_2$O | | monoclinic | C2/c | a 21.87 b 12.245 c 18.724 β 127.58° | | | |
| | Ag$_x$Na$_{(6-x)}$Ge$_2$Se$_7$ x=1.76 | | | | | | | |
| | Ag$_x$Na$_{(8-x)}$Ge$_4$Se$_{10}$ | | | C2/c | | | | |
| | K$_2$Ag$_2$GeSe$_4$ | | orthorhombic | Fddd | a 6.613 b 13.776 c 21.822 | | | |
| | Ag$_2$FeGeSe$_4$ | | orthorhombic | | | | | |
| | AgGaGeSe$_4$ | | tetragonal | I42d | a = 5.8056 c = 10.349 | 348.81 | | band gap 2.27 eV |
| | Rb$_2$Ag$_2$GeSe$_4$ | 1579.76 | orthorhombic | Fddd | a 6.5943 b 13.9740 c 22.627 | | | |
| | RbAg$_3$Ga$_8$Se$_{14}$ | | monoclinic | Cm | a 12.9155 b 11.7376 c 9.6693 β 116.367° | | | |
| | Ag$_2$Sr$_3$Ge$_2$Se$_8$ | | cubic | I43d | | | | |
| | Rb$_3$[AgGe$_4$Se$_{10}$]·2H$_2$O | | | | | | | |
| | Li$_7$Cd$_{4.5}$Ge$_4$Se$_{16}$ | | orthorhombic | Pna2$_1$ | a 14.165 b 8.2990 c 6.6869 | | | band gap 2.18 eV; melt 985K |
| | Na$_2$CdGe$_2$Se$_6$ | | monoclinic | Cc | a 7.589 b 13.182 c 12.069 β 98.829° | | | SHG 2×AgGaS$_2$ at 2.09 μm |
| | K$_2$CdGe$_3$Se$_8$ | 1040.05 | monoclinic | P2$_1$ | a=7.6069 b=12.4016 c=17.6585 β=95.306° Z=4 | 1658.71 | 4.165 | brownish yellow |
| | SrCdGeSe$_4$ | | orthorhombic | Ama2 | a = 10.8245 b = 10.6912 c = 6.6792 Z=4 | | | red; band gap 1.9 eV; melt 851; SHG 5× AgGaS$_2$ |
| | [NH$_4$]$_2$In$_4$Se$_8$Ge$_4$ | | monoclinic | P2$_1$/c | a 7.642 b 12.470 c 18.222 β 95.214° | | | |
| | KInGeSe$_4$ | | monoclinic | P2$_1$/c | a=7.6108 b=12.4473 c=18.0896 β=97.238° Z=8 | 1700.0 | 4.239 | yellow |
| | RbInGeSe$_4$ | | orthorhombic | Pnma | a=17.9948 b=7.6908 c=12.6003 Z=8 | 1743.8 | 4.475 | yellow |
| | K$_3$Ga$_3$(Ge$_{6.17}$Sn$_{0.83}$)Se$_{20}$ | | monoclinic | Pc | a 7.0843 b 39.404 c 7.0212 β 90.567° | | | |
| | Na$_9$Sb(Ge$_2$Se$_6$)$_2$ | | monoclinic | C2/c | a = 8.95 b = 24.33 c = 7.066 β = 122.10° Z=2 | 1303 | 3.992 | red |
| | Sr$_3$GeSb$_2$Se$_8$ | | orthorhombic | Pnma | a = 12.633 b = 4.301 c = 28.693 Z = 4 | 1558.8 | | band gap 0.75 eV |
| | Cs$_4$Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 7.6295 b 9.6884 c 19.773 β=98.78° | | | |
| | Cs$_4$Ge$_2$Se$_8$ | 1308.5 | monoclinic | C2 | a=17.503 b=9.549 c=9.751 β=118.16° Z=2 | 1436.8 | 3.87 | orange-yellow |
| | Cs$_4$Ge$_4$Se$_{10}$ | | monoclinic | C2/c | a = 16.348 b = 16.49 c = 9.771 β = 107.10° | | | |
| | Cs$_4$Ge$_4$Se$_{10}$ · 2CH$_3$OH | 1675.7 | monoclinic | C2/m | a=15.278 b=7.624 c=10.090 β=121.71° Z=2 | 999.8 | 4.34 | yellow |
| | Cs$_4$Ge$_4$Se$_{12}$ | 1769.52 | orthorhombic | Pna2$_1$ | a 15.193 b 13.944 c 12.845 Z=4 | 2721.4 | 4.319 | red |
| | (C$_4$C$_1$C$_1$im)$^+$$_7${[Cs@Sn$^{II}$$_4$(Ge$^{IV}$$_4$Se$_{10}$)$_4$]$^{7−}$} | | cubic | P43m | a=15.446 | | | Cs in a tetrahedron |
| heptakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexatriacontakis(μ-selenido)-tetraselenido-cesium-tetra-germanium(ii)-hexadeca-germanium(iv) | (C$_2$C$_1$Im)$_7$[Cs@Ge$^{II}$$_4$(Ge$^{IV}$$_4$Se$_{10}$)$_4$] | 4831.2 | orthorhombic | P2$_1$2$_1$2$_1$ | a 18.1595 b 18.5017 c 36.632 Z=4 | 12307.8 | 2.980 | yellow |
| | Cs$_2$MgGe$_3$Se$_8$ | | orthorhombic | P2$_1$2$_1$2$_1$ | a 7.6635 b 12.7242 c 17.7724 | | | |
| | Cs[Cr(en)$_2$GeSe$_4$] | 693.57 | monoclinic | P2$_1$/n | a=11.3115 b=12.3519 c=11.4514 β =93.359 Z=4 | 1597.2 | 2.884 | black |
| | Cs$_2$MnGe$_3$Se$_8$ | | orthorhombic | P2$_1$2$_1$2$_1$ | a 7.6376 b 12.648 c 17.762 | | | |
| | Cs$_2$[MnGe$_4$Se$_{10}$]·3H$_2$O | | tetragonal | | | | | |
| | Cs$_2$Cu$_2$GeSe$_4$ | | monoclinic | C2/c | a 7.8231 b 23.953 c 6.0197 β 113.75° | | | |
| | Cs$_2$ZnGe$_3$Se$_8$ | | orthorhombic | P2$_1$2$_1$2$_1$ | a 7.5756 b 12.6191 c 17.6543 | | | |
| | CsGaGeSe$_4$ | | orthorhombic | Pnma | a= 17.7666 b= 7.5171 c= 12.6383 Z=8 | 1687.9 | 4.652 | colourless |
| | Cs$_2$Ge$_3$Ga$_6$Se$_{14}$ | | | P3m$_1$ | a = 7.6396 c =13.5866 Z = 1 | 686.72 | | dark red |
| | (Cs$_6$Cl)$_2$Cs$_5$[Ga$_{15}$Ge$_9$Se$_{48}$] | | tetragonal | I4/m | a 14.3870 c 28.012 | | | |
| | [Cs$_6$Cl][Ga$_5$GeQ$_{12}$] | | | | | | | band gap 2.89 eV; porous layers |
| | (Cs$_6$Br)$_2$Cs$_5$[Ga$_{15}$Ge$_9$Se$_{48}$] | | tetragonal | I4/m | a 14.3806 c 27.934 | | | |
| | (Cs$_6$I$_{0.6}$Cl$_{0.5}$)$_2$Cs$_5$[Ga$_{15}$Ge$_9$Se$_{48}$] | | tetragonal | I4/m | a 14.4267 c 28.082 | | | |
| | (Cs$_5$KCl)$_2$Cs$_5$[Ga$_{15}$Ge$_9$Se$_{48}$] | | tetragonal | I4/m | a=14.3309 c=27.797 | | | |
| | (Rb$_6$Cl)$_2$Cs$_5$[Ga$_{15}$Ge$_9$Se$_{48}$] | | tetragonal | I4/m | a=14.2193 c=27.410 Z=2 | 5542 | | |
| | (Rb$_6$Br)$_2$Cs$_5$[Ga$_{15}$Ge$_9$Se$_{48}$] | | tetragonal | I4/m | a=14.4034 c=27.598 Z=2 | 5646.3 | | |
| | Cs$_3$AsGeSe$_5$ | | monoclinic | C2/m | a 14.252 b 7.4 c 10.335 β 124.07° | | | |
| | CsAg$_3$Ga$_8$Se$_{14}$ | | monoclinic | Cm | a 12.9694 b 11.7931 c 9.7011 β 116.805° | | | |
| | Cs$_3$[AgGe$_4$Se$_{10}$]·2H$_2$O | | | | | | | |
| | Cs$_2$CdGe$_3$Se$_8$ | | orthorhombic | P2$_1$2$_1$2$_1$ | 7.7048 b 12.6822 c 17.8208 | | | |
| | Cs$_2$Ge$_3$In$_6$Se$_{14}$ | | | R3m | a = 7.9951 c = 41.726 | | | band gap 2.08 eV |
| | Ba$_2$Ge$_2$Se$_5$ | | orthorhombic | Pnma | a=12.594 b=9.174 c=9.160 Z=4 | | | |
| | [Ba$_2$(H$_2$O)$_9$][GeSe$_4$] | 825.25 | orthorhombic | Pbca | a 13.916 b 15.097 c 16.116 Z=8 | 3385.9 | 3.238 | light yellow |
| | Ba$_6$Ge$_2$Se$_{12}$ | | monoclinic | P2$_1$/c | a = 10.0903 b = 9.3640 c = 25.7643 β = 90.303° | | | |
| | Ba$_7$Ge$_2$Se$_{17}$ | | orthorhombic | Pnma | a = 12.652 b = 20.069 c = 12.3067 | | | |
| | Ba$_4$Ge$_3$Se$_9$Cl$_2$ | | | P6$_3$ | a 10.0924 b 10.0924 c 12.512 | | | |
| | Ba$_3$[Mn$_6$Ge$_4$Se$_{17}$]·19H$_2$O | 2716.66 | triclinic | P1 | a 12.184 b 15.089 c 15.868 α 88.73° β 73.68° γ 71.06° Z=2 | 2640.4 | 3.412 | red |
| | Ba$_3$[Mn$_6$Ge$_4$Se$_{17}$]·30H$_2$O | | rhombohedral | R3c | a 20.463 c 25.11 Z=6 | 9109 | 3.188 | orange-red |
| | BaCu$_2$GeSe$_4$ | | | P3$_1$21 | a 6.5014 c 16.266 | | | red |
| | BaZnGeSe$_4$ | | orthorhombic | Ama2 | a = 11.3255 b = 11.2527 c = 6.2917 | | | band gap 2.46 eV |
| | LiBa$_4$Ga$_5$Se$_{12}$ | | orthorhombic | P42$_1$c | a 13.0056 b 13.0056 c 6.2671 | | | band gap 2.44 eV |
| | Ba$_4$Ge$_3$Se$_9$Br$_2$ | | hexagonal | P6$_3$ | a = 10.2345 c = 12.5306 | | | |
| | BaCdGeSe$_4$ | | orthorhombic | Fdd2 | a=22.167 b=22.768 c=13.303 | | | band gap 1.67 eV; SHG 0.5 × AgGaS$_2$ |
| | Ba$_4$GeSb$_2$Se$_{11}$ | 1734.01 | orthorhombic | Cmc2$_1$ | a = 9.37 b = 25.85, c = 8.80 Z=4 | 2131 | 5.404 | |
| | La$_4$Ge$_3$Se$_2$S$_{10}$ | | rhombohedral | R3c | a=19.5575 c=8.1468 | 2698.6 | 4.605 | Yellow-orange |
| | La$_4$Ge$_3$Se$_4$S$_8$ | | rhombohedral | R3c | | 2745.3 | | Yellow-orange |
| | La$_4$Ge$_3$Se$_6$S$_6$ | | rhombohedral | R3c | | 2792.6 | | orange |
| | La$_4$Ge$_3$Se$_8$S$_4$ | | rhombohedral | R3c | | 2845.3 | | red |
| | La$_4$Ge$_3$Se$_{10}$S$_2$ | | rhombohedral | R3c | | 2912.1 | | red |
| lanthanum(III) bis[hexaselenodigermanate] | Na$_9$La[Ge$_2$Se$_6$]$_2$ | | monoclinic | C12/m1 | a =7.974 b=12.337 c=7.114 β=107.101° Ζ=1 | 669.0 | | orange |
| | Ba$_4$LaSbGe$_3$Se$_{13}$ | | monoclinic | P2$_1$/c | a=16.3330 b=12.5115 c=13.0321 β=103.457° Z=4 | 2590.0 | | red; band gap 2.0 eV |
| | [Ce$_4$(tepa)$_4$(μ-GeSe$_4$)(μ-GeSe$_5$)(μ-Ge$_2$Se$_6$) | | triclinic | P1 | a 12.273 b 16.624 c 18.281 α 91.264° β 101.034° γ 96.497° | | | |
| | KCeGeSe$_4$ | | monoclinic | P2$_1$ | a = 6.852 b = 7.025 c = 9.017 β = 108.116° Z = 2 | | | |
| | Pr(teta)(tren)Cl]$_2$[Ge$_2$Se$_6$](en) | | triclinic | P1 | a 10.3153 b 10.4707 c 14.0511 α 99.606° β 92.679° γ 119.146° | | | |
| | Nd(teta)(tren)Cl]$_2$[Ge$_2$Se$_6$](en) | | triclinic | P1 | a 10.2840 b 10.4774 c 14.0341 α 99.655° β 92.651° γ 119.161° | | | |
| | Na$_9$Sm(Ge$_2$Se$_6$)$_2$ | | monoclinic | C2/m | a = 7.916 b = 12.244 c = 7.105 β = 106.99° Z = 1 | 658.6 | | |
| | Sm$_2$(μ-OH)$_2$(tepa)$_2$(μ-Ge$_2$Se$_6$) | | monoclinic | P2$_1$/n | a 12.10 b 11.41 c 12.71 β 92.81° | | | |
| | Sm(teta)(tren)Cl]$_2$[Ge$_2$Se$_6$](en) | | triclinic | P1 | a 10.3327 b 10.482 c 14.003 α 77.816° β 87.499° γ 60.62° | | | |
| | NaSmGeSe$_4$·0.25Na$_2$Se | | monoclinic | C2/c | a 22.508 b 11.0307 c 6.8261 β 103.038° | | | |
| | KSmGeSe$_4$ | | monoclinic | P2$_1$ | a = 6.774 b = 6.994 c = 8.960 β = 108.225° Z = 2 | 403.2 | | |
| | RbSmGeSe$_4$ | | orthorhombic | P2$_1$2$_1$2$_1$ | a = 6.7347 b = 7.0185 c = 17.723 Z=4 | 837.7 | | |
| | CsSmGeSe | | orthorhombic | P2$_1$2$_1$2$_1$ | a=6.707 b=7.067 c=18.334 Z=4 | 869.1 | | |
| | Eu$_2$GeSe$_4$ | | monoclinic | P2$_1$ | a = 6.964 b = 7.055 c = 8.400 β = 108.12° Z = 2 | | | deep red |
| | Eu$_2$GeSe$_4$ | | monoclinic | P2$_1$/m | a = 6.969 b = 7.059 c = 8.516 β = 107.99° Z = 2 | | | @673K |
| | Eu$_2$Ge$_2$Se$_5$ | | monoclinic | P2$_1$/n | a = 8.421 b = 12.235 c = 9.127 β = 93.67° Z = 4 | | | deep red |
| | {Eu(en)$_3$}$_2$(μ-OH)$_2$]Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 10.062 b 11.538 c 15.227 β 98.470° | | | |
| | Eu(teta)(tren)Cl]$_2$[Ge$_2$Se$_6$](en) | | triclinic | P1 | a 10.364 b 10.549 c 14.1157 α 77.299° β 87.606° γ 60.697° | | | |
| | {Eu(tepa)(μ-OH)}$_2$(μ-Ge$_2$Se$_8$) | | monoclinic | P2$_1$/n | a 12.384 b 11.697 c 12.965 β 94.107° | | | |
| | Na$_2$EuGeSe$_4$ | | cubic | I43m | a=7.3466 Z=2 | | | |
| | Na$_{0.75}$Eu$_{1.625}$GeSe$_4$ | | cubic | I43d | a=14.7065 Z=16 | | | |
| | K$_2$EuGeSe$_5$ | | monoclinic | P2$_1$/c | a = 11.8056 b = 9.9630 c = 8.9456 β = 91.195° Z = 4 | 1051.9 | 4.404 | @167K; band gap 1.84 eV; Eu(II) |
| | EuCdGeSe$_4$ | | orthorhombic | Ama2 | a 10.7525 b 10.6275 c 6.6740 Z=4 | 762.6 | 5.685 | red; band gap 2.25 eV; SHG 3.8 × AgGaS$_2$ |
| | Gd(teta)(tren)Cl]$_2$[Ge$_2$Se$_6$](en) | | triclinic | P1 | a 10.310 b 10.495 c 14.055 α 77.50° β 87.51° γ 60.81° | | | |
| | {Gd(tepa)(μ-OH)}$_2$(μ-Ge$_2$Se$_8$) | | monoclinic | P2$_1$/n | a 12.316 b 11.667 c 12.868 β 93.70° | | | |
| | {Dy(tepa)(μ-OH)}$_2$(μ-Ge$_2$Se$_8$) | | monoclinic | P2$_1$/n | a 12.329 b 11.627 c 12.882 β 94.177° | | | |
| | [{Dy(en)$_3$}$_2$(μ-OH)$_2$]Ge$_2$Se$_6$ | | | | a 10.026 b 11.526 c 15.147 β 99.030° | | | |
| | Tb$_2$(tepa)$_2$(μ-OH)$_2$(μ-Ge$_2$Se$_8$) | | monoclinic | P2$_1$/n | a 12.228 b 11.587 c 12.782 β 93.458° | | | |
| | Tb(teta)(tren)Cl]$_2$[Ge$_2$Se$_6$](en) | | triclinic | P1 | a 10.2303 b 10.4499 c 14.0083 α 99.655° β 92.737° γ 119.069° | | | |
| | [Tb$_2$(tepa)$_2$(μ-OH)$_2$(μ-Ge$_2$Se$_6$)]·0.5H$_2$O | | monoclinic | C2/c | a 22.007 b 12.3363 c 18.2590 β 125.196° | | | |
| | [{Ho(en)$_3$}$_2$(μ-OH)$_2$]Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 9.997 b 11.550 c 15.109 β 99.289° | | | |
| | [{Ho(dien)$_2$}$_2$(μ-OH)$_2$]Ge$_2$Se$_6$ | | monoclinic | P2$_1$/n | a 11.920 b 11.583 c 13.691 β 98.154° | | | |
| | Ho$_2$(μ-OH)$_2$(tepa)$_2$(μ-Ge$_2$Se$_6$) | | orthorhombic | Pbca | a 12.1791 b 13.487 c 20.346 | | | |
| | (H$_2$peha)[Er$_2$(μ-OH)$_2$(tepa)$_2$Cl$_2$]{[Er$_2$(μ-OH)$_2$(tepa)$_2$Cl]$_2$(μ-Ge$_2$Se$_6$)}[Ge$_2$Se$_6$]Cl$_2$ | | triclinic | P1 | a 9.1544 b 17.382 c 19.443, α 102.994° β 95.306° γ 101.406° | | | |
| | (H$_3$O)[Tm(teta)$_2$][Ge$_2$Se$_6$] | | orthorhombic | Pccn | a 13.7846 b 14.3998 c 17.9221 | | | |
| | Tm$_2$(tepa)$_2$(μ-OH)$_2$(μ-Ge$_2$Se$_6$) | | orthorhombic | Pbca | a 12.1702 b 13.528 c 20.281 | | | |
| | Li$_2$HgGeSe$_4$ | 602.90 | orthorhombic | Pna2$_1$ | a=14.150 b=8.260 c=6.692 Z=4 | 782.2 | 5.119 | yellow |
| | Na$_2$Hg$_3$Ge$_2$Se$_8$ | 1424.61 | tetragonal | P4c2 | a=9.1938 c=9.5437 Z=2 | 806.69 | 5.865 | red |
| | SrHgGeSe$_4$ | | orthorhombic | Ama2 | a 10.8375 b 10.7456 c 6.6377 | | | NLO 5 × AgGaS$_2$ |
| | BaHgGeSe$_4$ | | orthorhombic | Ama2 | a 11.255 b 11.033 c 6.685 | | | NLO 5 × AgGaS$_2$ |
| | EuHgGeSe$_4$ | | orthorhombic | Ama2 | a 10.6530 b 10.5990 c 6.5986 | | | band gap; SHG 3.1 × AgGaS$_2$ |
| | TlGaGeSe$_4$ | | orthorhombic | Pnma | a= 17.4742 b= 7.4105 c= 11.9406 Z=8 | 1546.22 | 5.692 | red |
| | Tl$_2$Ga$_2$GeSe$_6$ | | tetragonal | I4/mmc | a = 8.0770 c = 6.2572 Z = 4 | | | |
| | TlInGeSe$_4$ | 702 | monoclinic | P2$_1$/c | a= 7.586 b= 12.134 c=18.023 β= 96.037° Z=8 | 1649.8 | 5.653 | yellow |
| | TlInGe$_2$Se$_6$ | | trigonal | R3 | a = 10.1798 c = 9.2872 | | | band gap 2.38 eV |
| | α-Pb$_2$GeSe$_4$ | | | | | | | |
| | Na$_{0.5}$Pb$_{1.75}$GeSe$_4$ | | cubic | I43d | a = 14.662 | | | |
| | PbGa$_2$GeSe$_6$ | | | | | | | melt 687 °C; phase transition 522 °C |
| | Pb$_4$Ga$_4$GeSe$_{12}$ | | | | | | | |
| | Pb$_3$Ga$_2$GeSe$_8$ | | | P42$_1$c | | | | melt incongruently 656 °C |
| | Sr$_{1.31}$Pb$_{0.69}$GeSe$_4$ | | orthorhombic | Ama2 | a = 10.31220 b = 10.39320 c = 7.42140 | | | |
| | Sr$_{0.19}$Pb$_{1.81}$GeSe$_4$ | | | I42d | a = 14.6177 | | | |
| | Sr$_{12.6}$Pb$_{6.4}$Ge$_{11}$Se$_{44}$ | | hexagonal | P6$_3$ | a = 19.9867 c = 12.0546 | 4170.28 | | black; band gap 1.8 eV |
| | Ag$_{0.5}$Pb$_{1.75}$GeS$_3$Se | | | | | | | band gap 2.0 eV |