Selenidogermanate

Selenidogermanates are compounds with anions with selenium bound to germanium. They are analogous with germanates, thiogermanates, and telluridogermanates. ^[1]

List

name	formula	formula weight	crystal system	space group	cell dimensions	volume	density	comment	ref
	GeSe2								[2]
	Ge4Se9		orthorhombic	Pca21	a 17.8204 b 7.0029 c 12.0854				[2]
	Li3Ge3Se6		triclinic	P1	a 6.7728 b 8.6804 c 10.6300 α 74.519° β 76.334° γ 69.185°				[3]
	[Li4(H2O)16][Ge4Se10]·4.33H2O		monoclinic	P21	a=10.2246 b=20.4503 c=28.7242 β=97.850°				[4]
	{Li4(thf)12}Ge4Se10		monoclinic	C2/c	a=24.845 b =12.692 c=25.625 β=119.00°				[4]
	[Li2(H2O)8][MnGe4Se10]		tetragonal	I4	a=9.103 c =15.130				[4]
	[NH4]2[H2N(CH3)2]2Ge2Se6		monoclinic	P21/n	a 13.503 b 7.777 c 19.583 β 106.03°				[5]
	(N2H5)4Ge2Se6		tetragonal	I41cd	a = 12.708 c = 21.955 Z = 8				[6]
	[NEt4]2[enH]2[Ge2Se6]		triclinic	P1	a = 7.805, b = 10.747, c = 11.445, α = 110.33°, β = 97.19°, γ = 92.62° V =	889.0			[7]
	tetrakis(Tripropylammonium) hexakis(μ2-selenido)-tetrakis(selenoxo)-tetra-germanium(iv)		monoclinic	P21/c	a 18.759 b 16.104 c 21.211 β 108.52°				[8]
	(C2C1Im)4[Ge4Se10]	1524.63	tetragonal	P42/n	a=13.675 c=12.042 Z=2	2251.9	2.249	yellowish	[1]
1-Ethyl-3-methyl-imidazolium	(C2C1Im)6[Ge8Se19];	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	[1]
	(C2C1Im)6[Ge8Se19]	2747.96	monoclinic	P121/c1	a=22.206 b=9.544 c=36.823 β=105.37 Z=4	7524.8	2.426	yellow	[1]
	(C2C1Im)8[Ge16Se36]	4893.34	monoclinic	C12/c1	a=20.527 b=28.744 c=19.720 β=94.640 Z=4	11597	2.803	yellow	[1]
	2(C2C1Im)6[Ge12Se27]	7340.01	monoclinic	P121/n1	a=14.834 b=30.647 c=20.465 β=107.603 Z=2	8868	2.749	red	[1]
	(C4C1im)+2{[SnII(GeIV4Se10)]2−}		monoclinic	P21/n	a 9.9685 b 26.2588 c 13.9736 β 98.766°				[9]
	Na2GeSe3		monoclinic	P21/c	a =7.097 b=16.068 c=6.073 β =113.69° Z=4		3.72	yellow	[10]
	Na4GeSe4		orthorhombic	Pnma	a = 28.518 b=9.447 c=7.128 Z=8			orange-yellow	[11]
	Na4[Ge4Se10]		orthorhombic	Cmcm	a=13.507 b=13.363 c=11.034 Z=4	1881.6			[12]
	Na4Ge(Se2)4							red	[13]
	Na6Ge2Se6		monoclinic	P21	a = 8.367 b = 11.924 c = 8.158 β = 118.6°				[14]
	Na6Ge2Se7		monoclinic	C2/c	a=9.451 b=10.914 c=15.874 β=104.7°		3.51	yellow	[15] [16]
	Na8Ge4Se10		triclinic	P1	a = 7.074 b = 8.098 c = 10.657 α = 73.4° β = 70.8° γ= 81.7°				[14]
	Na8Ge4Se10		monoclinic	P21/c	a = 13.104 b=12.057 c=14.101 β= 92.9° Z=4		3.77	orange yellow	[10]
	[Na4(H2O)14][GeSe4]		monoclinic	C2	a = 12.862, b = 11.205, c = 8.141 Å, β = 107.40°				[17]
	Na4Ge2Se6 · 16 H2O		monoclinic	P21/c	a = 9.894 b = 11.781 c = 12.225 β = 92.90° Z = 2				[18]
	Na6Ge2Se6 · 4 CH3OH								[19]
	Na3GeSe3Br								[20]
	Mg2GeSe4	437.05	orthorhombic	Pnma	a 13.50 b 7.85 c 6.37 Z=4	675	4.302	yellow	[21]
	Li2MgGeSe4		orthorhombic	Pmn21	a = 8.2961 b = 7.0069 c = 6.6116, Z = 2	384.33	3.686	yellow	[22]
	Na4MgGe2Se6	735.21	monoclinic	C2	a 7.722 b 11.994 c 7.096 β 106.66° Z=2	629.7	3.878	orange-yellow	[23]
	K2GeSe4		monoclinic	P21/c	a=11.989 b=8.275 c=8.915 β=106.38° Z=4	848.8	3.65	orange	[24]
	K2Ge4Se8		monoclinic	P21/c	a=7.3752 b=12.239 c=17.468 β=96.102°, Z=4	1156.8		band gap 1.8 eV	[25]
	K4[GeSe4]		cubic	P43n	a=13.1893				[26]
	[K4(H2O)4][GeSe4]		triclinic	P1	a 7.8695 b 7.9576 c 12.314, α 80.24° β 87.66° γ 74.07°				[26]
	[K4(H2O)3][Ge2Se6]		monoclinic	P21/c	a 14.583 b 8.3858 c 14.17 β 96.27°				[26]
	[K4(H2O)3][Ge4Se10]								[1]
	K6Ge2Se6		monoclinic	C2/c	a=9.076 b=12.851 c=8.480 β=116.76°				[27]
	[V(en)2(ea)]2[Ge2Se6]		monoclinic	P21/n	a 8.733 b 13.432 c 13.583 β 91.486° Z=4	1592.8	2.256	red	[28]
	[V(teta)(ea)]2[Ge2Se6]		monoclinic	P21/n	a 9.0574 b 14.209 c 13.1189° β 91.384° Z=4	1687.8	2.232	red	[28]
	[V2(en)6(μ-O)][Ge2Se6]		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	[28]
	Na2MnGe2Se6	1439.72	tetragonal	I4/mcm	a = 7.772 c = 19.077 Z = 2	1152.3	4.150	@153K band gap 1.93 eV; brown	[29]
	Na8Mn2(Ge2Se6)2		monoclinic	C2	a 7.727 b 11.943 c 7.085 β 106.682°			band gap 1.95 eV	[30]
	K2MnGe2Se6		tetragonal	I4/mcm	a =8.1315 c =18.877				[31]
	[Mn(en)3]2Ge2Se6		monoclinic	P21/n	a 9.058 b 16.319 c 11.628 β 92.264°				[32]
	(enH2)[{Mn(en)2(enH)}2(μ-en)](Ge2Se7)2		orthorhombic	Pbca	a 15.816 b 13.638 c 24.677				[33]
	[Mn(dien)2]2Ge2Se7		monoclinic	P21/c	a 16.489 b 14.524 c 15.860 β 101.03°				[33]
	[{Mn(tepa)}2(μ-Ge2Se6)]		tetragonal	I 41/a	a=26.387 c 9.9435				[34]
	[K2(H2O)3][MnGe4Se10]		tetragonal	I4	a=8.988 c=15.49				[35]
Bis(trimethylammonium) decaselenidotetragermanatomanganate(II)	[(CH3)3NH]2[MnGe4Se10]		tetragonal	I4	a 9.559 c 14.808				[36]
	[Fe(dien)2]2Ge2Se6		monoclinic	P21/n	a 12.426 b 9.312 c 15.385 β 101.422°				[32]
	[{Fe(tepa)}2(μ-Ge2Se6)]		tetragonal	I 41/a	a 26.285 c 9.882				[34]
	K2FeGe3Se8		monoclinic	P21	a 7.409 b 12.268 c 34.974 β 96.04°			band gap 1.95 eV	[37]
	[Ni(dien)2]2Ge2Se5(Se2)		monoclinic	P21/c	a 15.741 b 14.463 c 16.390 β 103.03°				[5]
	[{Ni(tepa)}2(μ-Ge2Se6)]		tetragonal	I41/a	a=26.001 c=9.708				[5]
triethylenetetramine	[Ni(teta)2]2Ge4Se10·0.5H2O		monoclinic	P21/c	a 21.202 b 13.345 c 20.872 β 107.46°				[38]
	(enH2)5[Cu16Ge6Se19(Se2)6]·en		cubic	Pa3	a=a 20.8113 Z=12				[39]
	[(CH3)2NH2]6[Cu8Ge6Se19]·0.25H2O			Im3	a=22.43070				[39]
	[NH3CH3]0.75Cu1.25GeSe3		tetragonal	P421m	a=12.9345 c 8.9057				[40]
decakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexakis(μ-cyanido)-nonatriacontakis(μ-selenido)-selenido-hepta-copper(i)-hexadeca-germanium(iv)-penta-sodium	(C2C1Im)10[Na5(CN)6@Cu6(Ge4Se10)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	[41]
decakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexakis(μ-cyanido)-nonatriacontakis(μ-selenido)-selenido-hepta-copper(i)-hexadeca-germanium(iv)-penta-sodium	(C2C1Im)10[Na5(CN)6@Cu6(Ge4Se10)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	[41]
1,2-dap = 1,2-diaminopropane	[Mn(1,2-dap)2][Cu2GeSe5]		monoclinic	P21/c	a 6.673 b 18.210 c 15.070 β 96.078°				[42]
	[Cu2GeSe5][Mn(Hen)2(en)]		monoclinic	P21/c	a 9.6327 b 20.6934 c 10.3704 β 100.646°			band gap 1.69 eV	[43]
tren = tris(2-aminoethyl)amine	[Ni(tren)(en)]2∙[Cu2GeSe5]2		orthorhombic	P212121	a 9.8574 b 13.0311 c 32.77				[42]
	[Ni(dien)2]2Ge2Se5(Se2)		monoclinic	P21/c	a=15.741 b=14.463 c=16.390 β=103.03(3)°				[5]
	{Ni(tepa)}2(μ-Ge2Se6)		tetragonal	I41/a	a=26.001 c=9.7079				[5]
	[NH3CH3]0.75Cu1.25GeSe3		tetragonal	P421m	a 12.9345 c 8.9057				[40]
	Na2ZnGe2Se6		tetragonal	I4/mcm	a 7.757 c 18.734			band gap 2.36 eV	[44] [45]
	Cu2ZnGeSe4		tetragonal	I4				band gap 1.38; air stable; SHG 43 pm/V at λ = 2900 nm	[46]
	Cu4ZnGe2Se7		monoclinic	C2	a 12.3443 b 5.6195 c 8.7904 β 98.693°			band gap 0.91 eV; air stable	[46]
N-(2-aminoethyl)piperazine	(H2NC4H8NCH2CH2NH2)(HNCH2CH2NH2)3Zn2Ge2Se8		orthorhombic	P21212	a=18.928 b=30.849 c=6.3954				[47]
	[NH4]2Ga4Se8Ge4		monoclinic	P21/c					[48]
	NaGaGe3Se8		monoclinic	P21/c	a 7.233 b 11.889 c 17.550 β 101.75° Z=4	1477.5	4.235	orange	[49]
	K2Ga2Ge2Se8		monoclinic	P21/c	a 7.3552 b 12.4151 c 17.6213 β 97.026° Z=4	1597.02	4.136	yellow	[50]
	K3Ga3Ge7Se20	2413.79	monoclinic	P21/c	a 7.0520 b 39.033 c 6.9488 β 90.433° Z=2	1912.67	4.191	orange	[49]
	K3Ga3(Ge4.95Si2.05)Se20		monoclinic	Pc	a 7.0101 b 38.928 c 6.9594 β 90.531°				[51]
	Rb2GeSe4	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	[24]
	Rb4Ge4Se10		monoclinic	C2/c	a = 16.095 b = 16.09 c = 9.390 β= 105.79°				[52]
	Rb4Ge4Se12		orthorhombic	Pna21	a 14.870 b 13.800 c 12.445 Z=4	2554	4.109	red	[53]
	Rb4Ge4Se10 • CH3OH	1453.9	monoclinc	C2	a=17.099 b=9.287 c=9.503 β=118.49 Z=2	1326.3	3.64	yellow	[24]
	Rb2MnGe3Se8		orthorhombic	P212121	a 7.2756 b 12.1668 c 16.8351				[54]
	Rb2[MnGe4Se10]·3H2O		tetragonal						[55]
	Rb3(AlSe2)3(GeSe2)7		monoclinic	P21/c	a = 7.0580 b = 39.419 c = 7.0412 β = 90.360° Z = 2			#190K; band gap 2.4 eV	[56]
	RbGaGeSe4		orthorhombic	Pnma	a=17.5750 b= 7.4718 c= 12.4449 Z=8	1634.23	4.419	colourless; air sensitive	[50]
	γ-Sr2GeSe4		orthorhombic	Ama2	a = 10.284 b = 10.543 c = 7.411 Z=4				[57] [58]
Strontium Selenogermanate(III)	Sr2Ge2Se5		monoclinic	P21/n	a=8.445 b=12.302 c=9.179 β=93.75° Z=4			Ge-Ge bond	[59]
tepa=tetraethylenepentamine	(H2peha)[Y2(μ-OH)2(tepa)2Cl2]{[Y2(μ-OH)2(tepa)2Cl]2(μ-Ge2Se6)}[Ge2Se6]Cl2		triclinic	P1	a 9.1861 b 17.3698 c 19.5422 α 103.218° β 95.414° γ 101.439°				[60]
	Y2(tepa)2(μ-OH)2(μ-Ge2Se6)]·H2O		monoclinic	C2/c	a 21.87 b 12.245 c 18.724 β 127.58°				[61]
	AgxNa(6-x)Ge2Se7x=1.76								[62]
	AgxNa(8-x)Ge4Se10			C2/c					[62]
	K2Ag2GeSe4		orthorhombic	Fddd	a 6.613 b 13.776 c 21.822				[63]
	Ag2FeGeSe4		orthorhombic						[64]
	AgGaGeSe4		tetragonal	I42d	a = 5.8056 c = 10.349	348.81		band gap 2.27 eV	[65]
	Rb2Ag2GeSe4	1579.76	orthorhombic	Fddd	a 6.5943 b 13.9740 c 22.627				[66]
	RbAg3Ga8Se14		monoclinic	Cm	a 12.9155 b 11.7376 c 9.6693 β 116.367°				[67]
	Ag2Sr3Ge2Se8		cubic	I43d					[68]
	Rb3[AgGe4Se10]·2H2O								[55]
	Li7Cd4.5Ge4Se16		orthorhombic	Pna21	a 14.165 b 8.2990 c 6.6869			band gap 2.18 eV; melt 985K	[69]
	Na2CdGe2Se6		monoclinic	Cc	a 7.589 b 13.182 c 12.069 β 98.829°			SHG 2×AgGaS2 at 2.09 μm	[44]
	K2CdGe3Se8	1040.05	monoclinic	P21	a=7.6069 b=12.4016 c=17.6585 β=95.306° Z=4	1658.71	4.165	brownish yellow	[70]
	SrCdGeSe4		orthorhombic	Ama2	a = 10.8245 b = 10.6912 c = 6.6792 Z=4			red; band gap 1.9 eV; melt 851; SHG 5× AgGaS2	[71]
	[NH4]2In4Se8Ge4		monoclinic	P21/c	a 7.642 b 12.470 c 18.222 β 95.214°				[48]
	KInGeSe4		monoclinic	P21/c	a=7.6108 b=12.4473 c=18.0896 β=97.238° Z=8	1700.0	4.239	yellow	[72]
	RbInGeSe4		orthorhombic	Pnma	a=17.9948 b=7.6908 c=12.6003 Z=8	1743.8	4.475	yellow	[72]
	K3Ga3(Ge6.17Sn0.83)Se20		monoclinic	Pc	a 7.0843 b 39.404 c 7.0212 β 90.567°				[51]
	Na9Sb(Ge2Se6)2		monoclinic	C2/c	a = 8.95 b = 24.33 c = 7.066 β = 122.10° Z=2	1303	3.992	red	[73]
	Sr3GeSb2Se8		orthorhombic	Pnma	a = 12.633 b = 4.301 c = 28.693 Z = 4	1558.8		band gap 0.75 eV	[74]
	Cs4Ge2Se6		monoclinic	P21/n	a 7.6295 b 9.6884 c 19.773 β=98.78°				[75]
	Cs4Ge2Se8	1308.5	monoclinic	C2	a=17.503 b=9.549 c=9.751 β=118.16° Z=2	1436.8	3.87	orange-yellow	[76]
	Cs4Ge4Se10		monoclinic	C2/c	a = 16.348 b = 16.49 c = 9.771 β = 107.10°				[52]
	Cs4Ge4Se10 · 2CH3OH	1675.7	monoclinic	C2/m	a=15.278 b=7.624 c=10.090 β=121.71° Z=2	999.8	4.34	yellow	[76]
	Cs4Ge4Se12	1769.52	orthorhombic	Pna21	a 15.193 b 13.944 c 12.845 Z=4	2721.4	4.319	red	[53]
	(C4C1C1im)+7{[Cs@SnII4(GeIV4Se10)4]7−}		cubic	P43m	a=15.446			Cs in a tetrahedron	[9]
heptakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexatriacontakis(μ-selenido)-tetraselenido-cesium-tetra-germanium(ii)-hexadeca-germanium(iv)	(C2C1Im)7[Cs@GeII4(GeIV4Se10)4]	4831.2	orthorhombic	P212121	a 18.1595 b 18.5017 c 36.632 Z=4	12307.8	2.980	yellow	[41]
	Cs2MgGe3Se8		orthorhombic	P212121	a 7.6635 b 12.7242 c 17.7724				[77]
	Cs[Cr(en)2GeSe4]	693.57	monoclinic	P21/n	a=11.3115 b=12.3519 c=11.4514 β =93.359 Z=4	1597.2	2.884	black	[78]
	Cs2MnGe3Se8		orthorhombic	P212121	a 7.6376 b 12.648 c 17.762				[54]
	Cs2[MnGe4Se10]·3H2O		tetragonal						[55]
	Cs2Cu2GeSe4		monoclinic	C2/c	a 7.8231 b 23.953 c 6.0197 β 113.75°				[66]
	Cs2ZnGe3Se8		orthorhombic	P212121	a 7.5756 b 12.6191 c 17.6543				[77]
	CsGaGeSe4		orthorhombic	Pnma	a= 17.7666 b= 7.5171 c= 12.6383 Z=8	1687.9	4.652	colourless	[50]
	Cs2Ge3Ga6Se14			P3m1	a = 7.6396 c =13.5866 Z = 1	686.72		dark red	[79]
	(Cs6Cl)2Cs5[Ga15Ge9Se48]		tetragonal	I4/m	a 14.3870 c 28.012				[80]
	[Cs6Cl][Ga5GeQ12]							band gap 2.89 eV; porous layers	[81]
	(Cs6Br)2Cs5[Ga15Ge9Se48]		tetragonal	I4/m	a 14.3806 c 27.934				[80]
	(Cs6I0.6Cl0.5)2Cs5[Ga15Ge9Se48]		tetragonal	I4/m	a 14.4267 c 28.082				[80]
	(Cs5KCl)2Cs5[Ga15Ge9Se48]		tetragonal	I4/m	a=14.3309 c=27.797				[80]
	(Rb6Cl)2Cs5[Ga15Ge9Se48]		tetragonal	I4/m	a=14.2193 c=27.410 Z=2	5542			[80]
	(Rb6Br)2Cs5[Ga15Ge9Se48]		tetragonal	I4/m	a=14.4034 c=27.598 Z=2	5646.3			[80]
	Cs3AsGeSe5		monoclinic	C2/m	a 14.252 b 7.4 c 10.335 β 124.07°				[75]
	CsAg3Ga8Se14		monoclinic	Cm	a 12.9694 b 11.7931 c 9.7011 β 116.805°				[67]
	Cs3[AgGe4Se10]·2H2O								[55]
	Cs2CdGe3Se8		orthorhombic	P212121	7.7048 b 12.6822 c 17.8208				[77]
	Cs2Ge3In6Se14			R3m	a = 7.9951 c = 41.726			band gap 2.08 eV	[82]
	Ba2Ge2Se5		orthorhombic	Pnma	a=12.594 b=9.174 c=9.160 Z=4				[59]
	[Ba2(H2O)9][GeSe4]	825.25	orthorhombic	Pbca	a 13.916 b 15.097 c 16.116 Z=8	3385.9	3.238	light yellow	[83]
	Ba6Ge2Se12		monoclinic	P21/c	a = 10.0903 b = 9.3640 c = 25.7643 β = 90.303°				[84]
	Ba7Ge2Se17		orthorhombic	Pnma	a = 12.652 b = 20.069 c = 12.3067				[84]
	Ba4Ge3Se9Cl2			P63	a 10.0924 b 10.0924 c 12.512				[85]
	Ba3[Mn6Ge4Se17]·19H2O	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	[83]
	Ba3[Mn6Ge4Se17]·30H2O		rhombohedral	R3c	a 20.463 c 25.11 Z=6	9109	3.188	orange-red	[83]
	BaCu2GeSe4			P3121	a 6.5014 c 16.266			red	[86]
	BaZnGeSe4		orthorhombic	Ama2	a = 11.3255 b = 11.2527 c = 6.2917			band gap 2.46 eV	[87]
	LiBa4Ga5Se12		orthorhombic	P421c	a 13.0056 b 13.0056 c 6.2671			band gap 2.44 eV	[88]
	Ba4Ge3Se9Br2		hexagonal	P63	a = 10.2345 c = 12.5306
	BaCdGeSe4		orthorhombic	Fdd2	a=22.167 b=22.768 c=13.303			band gap 1.67 eV; SHG 0.5 × AgGaS2	[89]
	Ba4GeSb2Se11	1734.01	orthorhombic	Cmc21	a = 9.37 b = 25.85, c = 8.80 Z=4	2131	5.404		[90]
	La4Ge3Se2S10		rhombohedral	R3c	a=19.5575 c=8.1468	2698.6	4.605	Yellow-orange	[91]
	La4Ge3Se4S8		rhombohedral	R3c		2745.3		Yellow-orange	[91]
	La4Ge3Se6S6		rhombohedral	R3c		2792.6		orange	[91]
	La4Ge3Se8S4		rhombohedral	R3c		2845.3		red	[91]
	La4Ge3Se10S2		rhombohedral	R3c		2912.1		red	[91]
lanthanum(III) bis[hexaselenodigermanate]	Na9La[Ge2Se6]2		monoclinic	C12/m1	a =7.974 b=12.337 c=7.114 β=107.101° Ζ=1	669.0		orange	[92]
	Ba4LaSbGe3Se13		monoclinic	P21/c	a=16.3330 b=12.5115 c=13.0321 β=103.457° Z=4	2590.0		red; band gap 2.0 eV	[93]
	[Ce4(tepa)4(μ-GeSe4)(μ-GeSe5)(μ-Ge2Se6)		triclinic	P1	a 12.273 b 16.624 c 18.281 α 91.264° β 101.034° γ 96.497°				[60]
	KCeGeSe4		monoclinic	P21	a = 6.852 b = 7.025 c = 9.017 β = 108.116° Z = 2				[94]
	Pr(teta)(tren)Cl]2[Ge2Se6](en)		triclinic	P1	a 10.3153 b 10.4707 c 14.0511 α 99.606° β 92.679° γ 119.146°				[95]
	Nd(teta)(tren)Cl]2[Ge2Se6](en)		triclinic	P1	a 10.2840 b 10.4774 c 14.0341 α 99.655° β 92.651° γ 119.161°				[95]
	Na9Sm(Ge2Se6)2		monoclinic	C2/m	a = 7.916 b = 12.244 c = 7.105 β = 106.99° Z = 1	658.6			[96] [97]
	Sm2(μ-OH)2(tepa)2(μ-Ge2Se6)		monoclinic	P21/n	a 12.10 b 11.41 c 12.71 β 92.81°				[60]
	Sm(teta)(tren)Cl]2[Ge2Se6](en)		triclinic	P1	a 10.3327 b 10.482 c 14.003 α 77.816° β 87.499° γ 60.62°				[95]
	NaSmGeSe4·0.25Na2Se		monoclinic	C2/c	a 22.508 b 11.0307 c 6.8261 β 103.038°				[98]
	KSmGeSe4		monoclinic	P21	a = 6.774 b = 6.994 c = 8.960 β = 108.225° Z = 2	403.2			[99]
	RbSmGeSe4		orthorhombic	P212121	a = 6.7347 b = 7.0185 c = 17.723 Z=4	837.7			[99]
	CsSmGeSe		orthorhombic	P212121	a=6.707 b=7.067 c=18.334 Z=4	869.1			[99]
	Eu2GeSe4		monoclinic	P21	a = 6.964 b = 7.055 c = 8.400 β = 108.12° Z = 2			deep red	[100]
	Eu2GeSe4		monoclinic	P21/m	a = 6.969 b = 7.059 c = 8.516 β = 107.99° Z = 2			@673K	[100]
	Eu2Ge2Se5		monoclinic	P21/n	a = 8.421 b = 12.235 c = 9.127 β = 93.67° Z = 4			deep red	[100]
	{Eu(en)3}2(μ-OH)2]Ge2Se6		monoclinic	P21/n	a 10.062 b 11.538 c 15.227 β 98.470°				[101]
	Eu(teta)(tren)Cl]2[Ge2Se6](en)		triclinic	P1	a 10.364 b 10.549 c 14.1157 α 77.299° β 87.606° γ 60.697°				[95]
	{Eu(tepa)(μ-OH)}2(μ-Ge2Se8)		monoclinic	P21/n	a 12.384 b 11.697 c 12.965 β 94.107°				[102]
	Na2EuGeSe4		cubic	I43m	a=7.3466 Z=2				[103]
	Na0.75Eu1.625GeSe4		cubic	I43d	a=14.7065 Z=16				[103]
	K2EuGeSe5		monoclinic	P21/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)	[104]
	EuCdGeSe4		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 × AgGaS2	[105]
	Gd(teta)(tren)Cl]2[Ge2Se6](en)		triclinic	P1	a 10.310 b 10.495 c 14.055 α 77.50° β 87.51° γ 60.81°				[95]
	{Gd(tepa)(μ-OH)}2(μ-Ge2Se8)		monoclinic	P21/n	a 12.316 b 11.667 c 12.868 β 93.70°				[102]
	{Dy(tepa)(μ-OH)}2(μ-Ge2Se8)		monoclinic	P21/n	a 12.329 b 11.627 c 12.882 β 94.177°				[102]
	[{Dy(en)3}2(μ-OH)2]Ge2Se6				a 10.026 b 11.526 c 15.147 β 99.030°				[102]
	Tb2(tepa)2(μ-OH)2(μ-Ge2Se8)		monoclinic	P21/n	a 12.228 b 11.587 c 12.782 β 93.458°				[61]
	Tb(teta)(tren)Cl]2[Ge2Se6](en)		triclinic	P1	a 10.2303 b 10.4499 c 14.0083 α 99.655° β 92.737° γ 119.069°				[95]
	[Tb2(tepa)2(μ-OH)2(μ-Ge2Se6)]·0.5H2O		monoclinic	C2/c	a 22.007 b 12.3363 c 18.2590 β 125.196°				[106]
	[{Ho(en)3}2(μ-OH)2]Ge2Se6		monoclinic	P21/n	a 9.997 b 11.550 c 15.109 β 99.289°				[101]
	[{Ho(dien)2}2(μ-OH)2]Ge2Se6		monoclinic	P21/n	a 11.920 b 11.583 c 13.691 β 98.154°				[101]
	Ho2(μ-OH)2(tepa)2(μ-Ge2Se6)		orthorhombic	Pbca	a 12.1791 b 13.487 c 20.346				[60]
	(H2peha)[Er2(μ-OH)2(tepa)2Cl2]{[Er2(μ-OH)2(tepa)2Cl]2(μ-Ge2Se6)}[Ge2Se6]Cl2		triclinic	P1	a 9.1544 b 17.382 c 19.443, α 102.994° β 95.306° γ 101.406°				[60]
	(H3O)[Tm(teta)2][Ge2Se6]		orthorhombic	Pccn	a 13.7846 b 14.3998 c 17.9221				[95]
	Tm2(tepa)2(μ-OH)2(μ-Ge2Se6)		orthorhombic	Pbca	a 12.1702 b 13.528 c 20.281				[106]
	Li2HgGeSe4	602.90	orthorhombic	Pna21	a=14.150 b=8.260 c=6.692 Z=4	782.2	5.119	yellow	[107]
	Na2Hg3Ge2Se8	1424.61	tetragonal	P4c2	a=9.1938 c=9.5437 Z=2	806.69	5.865	red	[107]
	SrHgGeSe4		orthorhombic	Ama2	a 10.8375 b 10.7456 c 6.6377			NLO 5 × AgGaS2	[108]
	BaHgGeSe4		orthorhombic	Ama2	a 11.255 b 11.033 c 6.685			NLO 5 × AgGaS2	[108]
	EuHgGeSe4		orthorhombic	Ama2	a 10.6530 b 10.5990 c 6.5986			band gap; SHG 3.1 × AgGaS2	[109]
	TlGaGeSe4		orthorhombic	Pnma	a= 17.4742 b= 7.4105 c= 11.9406 Z=8	1546.22	5.692	red	[50]
	Tl2Ga2GeSe6		tetragonal	I4/mmc	a = 8.0770 c = 6.2572 Z = 4				[110]
	TlInGeSe4	702	monoclinic	P21/c	a= 7.586 b= 12.134 c=18.023 β= 96.037° Z=8	1649.8	5.653	yellow	[72]
	TlInGe2Se6		trigonal	R3	a = 10.1798 c = 9.2872			band gap 2.38 eV	[111]
	α-Pb2GeSe4								[57]
	Na0.5Pb1.75GeSe4		cubic	I43d	a = 14.662				[97]
	PbGa2GeSe6							melt 687 °C; phase transition 522 °C	[112]
	Pb4Ga4GeSe12								[112]
	Pb3Ga2GeSe8			P421c				melt incongruently 656 °C	[112]
	Sr1.31Pb0.69GeSe4		orthorhombic	Ama2	a = 10.31220 b = 10.39320 c = 7.42140				[57]
	Sr0.19Pb1.81GeSe4			I42d	a = 14.6177				[57]
	Sr12.6Pb6.4Ge11Se44		hexagonal	P63	a = 19.9867 c = 12.0546	4170.28		black; band gap 1.8 eV	[113]
	Ag0.5Pb1.75GeS3Se							band gap 2.0 eV	[114]

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