Selenidogermanate Explained

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

List

!name!formula!formula weight!crystalsystem!spacegroup!cell dimensions!volume!density!comment!ref
GeSe2[2]
Ge4Se9orthorhombicPca21a 17.8204 b 7.0029 c 12.0854
Li3Ge3Se6triclinicPa 6.7728 b 8.6804 c 10.6300 α 74.519° β 76.334° γ 69.185°[3]
[Li<sub>4</sub>(H<sub>2</sub>O)<sub>16</sub>][Ge<sub>4</sub>Se<sub>10</sub>]·4.33H2OmonoclinicP21a=10.2246 b=20.4503 c=28.7242 β=97.850°[4]
Ge4Se10monoclinicC2/ca=24.845 b =12.692 c=25.625 β=119.00°
[Li<sub>2</sub>(H<sub>2</sub>O)<sub>8</sub>][MnGe<sub>4</sub>Se<sub>10</sub>]tetragonalIa=9.103 c =15.130
[NH<sub>4</sub>]2[H<sub>2</sub>N(CH<sub>3</sub>)<sub>2</sub>]2Ge2Se6monoclinicP21/na 13.503 b 7.777 c 19.583 β 106.03°[5]
(N2H5)4Ge2Se6tetragonalI41cda = 12.708 c = 21.955 Z = 8[6]
[NEt<sub>4</sub>]2[enH]2[Ge<sub>2</sub>Se<sub>6</sub>]triclinicPa = 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)monoclinicP21/ca 18.759 b 16.104 c 21.211 β 108.52°[8]
(C2C1Im)4[Ge<sub>4</sub>Se<sub>10</sub>]1524.63tetragonalP42/na=13.675 c=12.042 Z=22251.92.249yellowish
1-Ethyl-3-methyl-imidazolium(C2C1Im)6[Ge<sub>8</sub>Se<sub>19</sub>]; 2747.96triclinicPa=10.2607 b=17.6852 c=21.994 α=100.889β= 95.600  γ=105.240 Z=23735.52.443yellowish
(C2C1Im)6[Ge<sub>8</sub>Se<sub>19</sub>]2747.96monoclinicP121/c1a=22.206 b=9.544 c=36.823 β=105.37 Z=47524.82.426yellow
(C2C1Im)8[Ge<sub>16</sub>Se<sub>36</sub>]4893.34monoclinicC12/c1a=20.527 b=28.744 c=19.720 β=94.640 Z=4115972.803yellow
2(C2C1Im)6[Ge<sub>12</sub>Se<sub>27</sub>]7340.01monoclinicP121/n1a=14.834 b=30.647 c=20.465 β=107.603 Z=288682.749red
(C4C1im)+2monoclinicP21/na 9.9685 b 26.2588 c 13.9736 β 98.766°[9]
Na2GeSe3monoclinicP21/ca =7.097 b=16.068 c=6.073 β =113.69° Z=43.72yellow[10]
Na4GeSe4orthorhombicPnmaa = 28.518 b=9.447 c=7.128 Z=8orange-yellow[11]
Na4[Ge<sub>4</sub>Se<sub>10</sub>]orthorhombicCmcma=13.507 b=13.363 c=11.034 Z=41881.6[12]
Na4Ge(Se2)4red[13]
Na6Ge2Se6monoclinicP21a = 8.367 b = 11.924 c = 8.158 β = 118.6°[14]
Na6Ge2Se7monoclinicC2/ca=9.451 b=10.914 c=15.874 β=104.7°3.51yellow[15] [16]
Na8Ge4Se10triclinicPa = 7.074 b = 8.098 c = 10.657 α = 73.4° β = 70.8° γ= 81.7°
Na8Ge4Se10monoclinicP21/ca = 13.104 b=12.057 c=14.101 β= 92.9° Z=43.77orange yellow
[Na<sub>4</sub>(H<sub>2</sub>O)<sub>14</sub>][GeSe<sub>4</sub>]monoclinicC2a = 12.862, b = 11.205, c = 8.141 Å, β = 107.40°[17]
Na4Ge2Se6 · 16 H2OmonoclinicP21/ca = 9.894 b = 11.781 c = 12.225 β = 92.90° Z = 2[18]
Na6Ge2Se6 · 4 CH3OH[19]
Na3GeSe3Br[20]
Mg2GeSe4437.05orthorhombicPnmaa 13.50 b 7.85 c 6.37 Z=46754.302yellow[21]
Li2MgGeSe4orthorhombicPmn21a = 8.2961 b = 7.0069 c = 6.6116, Z = 2384.333.686yellow[22]
Na4MgGe2Se6735.21monoclinicC2a 7.722 b 11.994 c 7.096 β 106.66° Z=2629.73.878orange-yellow[23]
K2GeSe4monoclinicP21/ca=11.989 b=8.275 c=8.915 β=106.38° Z=4848.83.65orange[24]
K2Ge4Se8monoclinicP21/ca=7.3752 b=12.239 c=17.468 β=96.102°, Z=41156.8band gap 1.8 eV[25]
K4[GeSe<sub>4</sub>]cubicP3na=13.1893[26]
[K<sub>4</sub>(H<sub>2</sub>O)<sub>4</sub>][GeSe<sub>4</sub>]triclinicPa 7.8695 b 7.9576 c 12.314, α 80.24° β 87.66° γ 74.07°
[K<sub>4</sub>(H<sub>2</sub>O)<sub>3</sub>][Ge<sub>2</sub>Se<sub>6</sub>]monoclinicP21/ca 14.583 b 8.3858 c 14.17 β 96.27°
[K<sub>4</sub>(H<sub>2</sub>O)<sub>3</sub>][Ge<sub>4</sub>Se<sub>10</sub>]
K6Ge2Se6monoclinicC2/ca=9.076 b=12.851 c=8.480 β=116.76°[27]
[V(en)<small><sub>2</sub></small>(ea)]2[Ge<small><sub>2</sub></small>Se<small><sub>6</sub></small>]monoclinicP21/na 8.733 b 13.432 c 13.583 β 91.486° Z=41592.82.256red[28]
[V(teta)(ea)]2[Ge<small><sub>2</sub></small>Se<small><sub>6</sub></small>]monoclinicP21/na 9.0574 b 14.209 c 13.1189° β 91.384° Z=41687.82.232red
[V<small><sub>2</sub></small>(en)<small><sub>6</sub></small>(μ-O)][Ge<small><sub>2</sub></small>Se<small><sub>6</sub></small>]triclinicPa 9.448 b 10.178 c 10.436 α 109.090° β 104.169° γ 111.520° Z=1802.72.271brown
Na2MnGe2Se61439.72tetragonalI4/mcma = 7.772 c = 19.077 Z = 21152.34.150@153K band gap 1.93 eV; brown[29]
Na8Mn2(Ge2Se6)2monoclinicC2a 7.727 b 11.943 c 7.085 β 106.682°band gap 1.95 eV[30]
K2MnGe2Se6tetragonalI4/mcma =8.1315 c =18.877[31]
[Mn(''en'')<sub>3</sub>]2Ge2Se6monoclinicP21/na 9.058 b 16.319 c 11.628 β 92.264°[32]
(enH2)[{Mn(en)<sub>2</sub>(enH)}<sub>2</sub>(μ-en)](Ge2Se7)2orthorhombicPbcaa 15.816 b 13.638 c 24.677[33]
[Mn(dien)<sub>2</sub>]2Ge2Se7monoclinicP21/ca 16.489 b 14.524 c 15.860 β 101.03°
[{Mn(tepa)}<sub>2</sub>(μ-Ge<sub>2</sub>Se<sub>6</sub>)]tetragonalI 41/aa=26.387 c 9.9435[34]
[K<sub>2</sub>(H<sub>2</sub>O)<sub>3</sub>][MnGe<sub>4</sub>Se<sub>10</sub>]tetragonalIa=8.988 c=15.49[35]
Bis(trimethylammonium) decaselenidotetragermanatomanganate(II)[(CH<sub>3</sub>)<sub>3</sub>NH]2[MnGe<sub>4</sub>Se<sub>10</sub>]tetragonalIa 9.559 c 14.808[36]
[Fe(''dien'')<sub>2</sub>]2Ge2Se6monoclinicP21/na 12.426 b 9.312 c 15.385 β 101.422°
[{Fe(tepa)}<sub>2</sub>(μ-Ge<sub>2</sub>Se<sub>6</sub>)]tetragonalI 41/aa 26.285 c 9.882
K2FeGe3Se8monoclinicP21a 7.409 b 12.268 c 34.974 β 96.04°band gap 1.95 eV[37]
[Ni(dien)<sub>2</sub>]2Ge2Se5(Se2)monoclinicP21/ca 15.741 b 14.463 c 16.390 β 103.03°
[{Ni(tepa)}<sub>2</sub>(''μ''-Ge<sub>2</sub>Se<sub>6</sub>)]tetragonalI41/aa=26.001 c=9.708
triethylenetetramine[Ni(teta)<sub>2</sub>]2Ge4Se10·0.5H2OmonoclinicP21/ca 21.202 b 13.345 c 20.872 β 107.46°[38]
(enH2)5[Cu<sub>16</sub>Ge<sub>6</sub>Se<sub>19</sub>(Se<sub>2</sub>)<sub>6</sub>]·encubicPaa=a 20.8113 Z=12[39]
[(CH<sub>3</sub>)<sub>2</sub>NH<sub>2</sub>]6[Cu<sub>8</sub>Ge<sub>6</sub>Se<sub>19</sub>]·0.25H2OIma=22.43070
[NH<small><sub>3</sub></small>CH<small><sub>3</sub></small>]0.75Cu1.25GeSe3tetragonalP21ma=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[Na<sub>5</sub>(CN)<sub>6</sub>@Cu<sub>6</sub>(Ge<sub>4</sub>Se<sub>10</sub>)<sub>4</sub>(Cu)]triclinicPa 19.2790 b 20.4268 c 23.2357 α 105.275° β 93.657° γ 115.206° Z=27822.62.610red[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[Na<sub>5</sub>(CN)<sub>6</sub>@Cu<sub>6</sub>(Ge<sub>4</sub>Se<sub>10</sub>)<sub>4</sub>(Cu)]6147.36triclinicPa 20.3454 b 20.8202 c 23.120 α 72.172° β 68.184° γ 60.802° Z=27842.12.472red
1,2-dap = 1,2-diaminopropane[Mn(1,2-dap)<sub>2</sub>][Cu<sub>2</sub>GeSe<sub>5</sub>]monoclinicP21/ca 6.673 b 18.210 c 15.070 β 96.078°[42]
[Cu<sub>2</sub>GeSe<sub>5</sub>][Mn(Hen)<sub>2</sub>(en)]monoclinicP21/ca 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∙[Cu<sub>2</sub>GeSe<sub>5</sub>]2 orthorhombicP212121a 9.8574 b 13.0311 c 32.77
[Ni(dien)<sub>2</sub>]2Ge2Se5(Se2)monoclinicP21/ca=15.741 b=14.463 c=16.390 β=103.03(3)°
2(μ-Ge2Se6)tetragonalI41/aa=26.001 c=9.7079
[NH<small><sub>3</sub></small>CH<small><sub>3</sub></small>]0.75Cu1.25GeSe3tetragonalP21ma 12.9345 c 8.9057
Na2ZnGe2Se6tetragonalI4/mcma 7.757 c 18.734band gap 2.36 eV[44] [45]
Cu2ZnGeSe4tetragonalI4band gap 1.38; air stable; SHG 43 pm/V at λ = 2900 nm[46]
Cu4ZnGe2Se7monoclinicC2a 12.3443 b 5.6195 c 8.7904 β 98.693°band gap 0.91 eV; air stable
N-(2-aminoethyl)piperazine(H2NC4H8NCH2CH2NH2)(HNCH2CH2NH2)3Zn2Ge2Se8orthorhombicP21212a=18.928 b=30.849 c=6.3954[47]
[NH<sub>4</sub>]2Ga4Se8Ge4monoclinicP21/c[48]
NaGaGe3Se8monoclinicP21/ca 7.233 b 11.889 c 17.550 β 101.75° Z=41477.54.235orange[49]
K2Ga2Ge2Se8monoclinicP21/ca 7.3552 b 12.4151 c 17.6213 β 97.026° Z=41597.024.136yellow[50]
K3Ga3Ge7Se202413.79monoclinicP21/ca 7.0520 b 39.033 c 6.9488 β 90.433° Z=21912.674.191orange
K3Ga3(Ge4.95Si2.05)Se20monoclinicPca 7.0101 b 38.928 c 6.9594 β 90.531°[51]
Rb2GeSe4559.4monoclinicP2/ma=7.390 b=3.704 c=8.623 β=104.87 Z=1228.14.07orange-brown
Rb4Ge4Se10monoclinicC2/ca = 16.095 b = 16.09 c = 9.390 β= 105.79°[52]
Rb4Ge4Se12orthorhombicPna21a 14.870 b 13.800 c 12.445 Z=425544.109red[53]
Rb4Ge4Se10 • CH3OH1453.9monoclincC2a=17.099 b=9.287 c=9.503 β=118.49 Z=21326.33.64yellow
Rb2MnGe3Se8orthorhombicP212121a 7.2756 b 12.1668 c 16.8351[54]
Rb2[MnGe<sub>4</sub>Se<sub>10</sub>]·3H2Otetragonal[55]
Rb3(AlSe2)3(GeSe2)7monoclinicP21/ca = 7.0580 b = 39.419 c = 7.0412 β = 90.360° Z = 2
  1. 190K; band gap 2.4 eV
[56]
RbGaGeSe4orthorhombicPnmaa=17.5750 b= 7.4718 c= 12.4449 Z=81634.234.419colourless; air sensitive
γ-Sr2GeSe4orthorhombicAma2a = 10.284 b = 10.543 c = 7.411 Z=4[57] [58]
Strontium Selenogermanate(III)Sr2Ge2Se5monoclinicP21/na=8.445 b=12.302 c=9.179 β=93.75° Z=4Ge-Ge bond[59]
tepa=tetraethylenepentamine(H2peha)[Y<sub>2</sub>(μ-OH)<sub>2</sub>(tepa)<sub>2</sub>Cl<sub>2</sub>][Ge<sub>2</sub>Se<sub>6</sub>]Cl2triclinicPa 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)]·H2OmonoclinicC2/ca 21.87 b 12.245 c 18.724 β 127.58°[61]
AgxNa(6-x)Ge2Se7 x=1.76[62]
AgxNa(8-x)Ge4Se10C2/c
K2Ag2GeSe4orthorhombicFddda 6.613 b 13.776 c 21.822[63]
Ag2FeGeSe4orthorhombic[64]
AgGaGeSe4tetragonalI2da = 5.8056 c = 10.349348.81band gap 2.27 eV[65]
Rb2Ag2GeSe41579.76orthorhombicFddda 6.5943 b 13.9740 c 22.627[66]
RbAg3Ga8Se14monoclinicCma 12.9155 b 11.7376 c 9.6693 β 116.367°[67]
Ag2Sr3Ge2Se8cubicI3d[68]
Rb3[AgGe<sub>4</sub>Se<sub>10</sub>]·2H2O
Li7Cd4.5Ge4Se16orthorhombicPna21a 14.165 b 8.2990 c 6.6869band gap 2.18 eV; melt 985K[69]
Na2CdGe2Se6monoclinicCca 7.589 b 13.182 c 12.069 β 98.829°SHG 2×AgGaS2 at 2.09 μm
K2CdGe3Se81040.05monoclinicP21a=7.6069 b=12.4016 c=17.6585 β=95.306° Z=41658.714.165brownish yellow[70]
SrCdGeSe4orthorhombicAma2a = 10.8245 b = 10.6912 c = 6.6792 Z=4red; band gap 1.9 eV; melt 851; SHG 5× AgGaS2[71]
[NH<sub>4</sub>]2In4Se8Ge4monoclinicP21/ca 7.642 b 12.470 c 18.222 β 95.214°
KInGeSe4monoclinicP21/ca=7.6108 b=12.4473 c=18.0896 β=97.238° Z=81700.04.239yellow[72]
RbInGeSe4orthorhombicPnmaa=17.9948 b=7.6908 c=12.6003 Z=81743.84.475yellow
K3Ga3(Ge6.17Sn0.83)Se20monoclinicPca 7.0843 b 39.404 c 7.0212 β 90.567°
Na9Sb(Ge2Se6)2monoclinicC2/ca = 8.95 b = 24.33 c = 7.066 β = 122.10° Z=213033.992red[73]
Sr3GeSb2Se8orthorhombicPnmaa = 12.633 b = 4.301 c = 28.693 Z = 41558.8band gap 0.75 eV[74]
Cs4Ge2Se6monoclinicP21/na 7.6295 b 9.6884 c 19.773 β=98.78° [75]
Cs4Ge2Se81308.5monoclinicC2a=17.503 b=9.549 c=9.751 β=118.16° Z=21436.83.87orange-yellow[76]
Cs4Ge4Se10monoclinicC2/ca = 16.348 b = 16.49 c = 9.771 β = 107.10°
Cs4Ge4Se10 · 2CH3OH1675.7monoclinicC2/ma=15.278 b=7.624 c=10.090 β=121.71° Z=2999.84.34yellow
Cs4Ge4Se121769.52orthorhombicPna21a 15.193 b 13.944 c 12.845 Z=42721.44.319red
(C4C1C1im)+7cubicP3ma=15.446Cs in a tetrahedron
heptakis(1-ethyl-3-methyl-1H-imidazol-3-ium) hexatriacontakis(μ-selenido)-tetraselenido-cesium-tetra-germanium(ii)-hexadeca-germanium(iv)(C2C1Im)7[Cs@Ge<sup>II</sup><sub>4</sub>(Ge<sup>IV</sup><sub>4</sub>Se<sub>10</sub>)<sub>4</sub>]4831.2orthorhombicP212121a 18.1595 b 18.5017 c 36.632 Z=412307.82.980yellow
Cs2MgGe3Se8orthorhombicP212121a 7.6635 b 12.7242 c 17.7724[77]
Cs[Cr(en)<sub>2</sub>GeSe<sub>4</sub>]693.57monoclinicP21/na=11.3115 b=12.3519 c=11.4514 β =93.359 Z=41597.22.884black[78]
Cs2MnGe3Se8orthorhombicP212121a 7.6376 b 12.648 c 17.762
Cs2[MnGe<sub>4</sub>Se<sub>10</sub>]·3H2Otetragonal
Cs2Cu2GeSe4monoclinicC2/ca 7.8231 b 23.953 c 6.0197 β 113.75°
Cs2ZnGe3Se8orthorhombicP212121a 7.5756 b 12.6191 c 17.6543
CsGaGeSe4orthorhombicPnmaa= 17.7666 b= 7.5171 c= 12.6383 Z=81687.94.652colourless
Cs2Ge3Ga6Se14Pm1a = 7.6396 c =13.5866 Z = 1 686.72dark red[79]
(Cs6Cl)2Cs5[Ga<sub>15</sub>Ge<sub>9</sub>Se<sub>48</sub>]tetragonalI4/ma 14.3870 c 28.012[80]
[Cs<sub>6</sub>Cl][Ga<sub>5</sub>GeQ<sub>12</sub>]band gap 2.89 eV; porous layers[81]
(Cs6Br)2Cs5[Ga<sub>15</sub>Ge<sub>9</sub>Se<sub>48</sub>]tetragonalI4/ma 14.3806 c 27.934
(Cs6I0.6Cl0.5)2Cs5[Ga<sub>15</sub>Ge<sub>9</sub>Se<sub>48</sub>]tetragonalI4/ma 14.4267 c 28.082
(Cs5KCl)2Cs5[Ga<sub>15</sub>Ge<sub>9</sub>Se<sub>48</sub>]tetragonalI4/ma=14.3309 c=27.797
(Rb6Cl)2Cs5[Ga<sub>15</sub>Ge<sub>9</sub>Se<sub>48</sub>]tetragonalI4/ma=14.2193 c=27.410 Z=25542
(Rb6Br)2Cs5[Ga<sub>15</sub>Ge<sub>9</sub>Se<sub>48</sub>]tetragonalI4/ma=14.4034 c=27.598 Z=25646.3
Cs3AsGeSe5monoclinicC2/ma 14.252 b 7.4 c 10.335 β 124.07°
CsAg3Ga8Se14monoclinicCma 12.9694 b 11.7931 c 9.7011 β 116.805°
Cs3[AgGe<sub>4</sub>Se<sub>10</sub>]·2H2O
Cs2CdGe3Se8orthorhombicP2121217.7048 b 12.6822 c 17.8208
Cs2Ge3In6Se14Rma = 7.9951 c = 41.726band gap 2.08 eV[82]
Ba2Ge2Se5orthorhombicPnmaa=12.594 b=9.174 c=9.160 Z=4
[Ba<sub>2</sub>(H<sub>2</sub>O)<sub>9</sub>][GeSe<sub>4</sub>]825.25orthorhombicPbcaa 13.916 b 15.097 c 16.116 Z=83385.93.238light yellow[83]
Ba6Ge2Se12monoclinicP21/ca = 10.0903 b = 9.3640 c = 25.7643 β = 90.303°[84]
Ba7Ge2Se17orthorhombicPnmaa = 12.652 b = 20.069 c = 12.3067
Ba4Ge3Se9Cl2P63a 10.0924 b 10.0924 c 12.512[85]
Ba3[Mn<sub>6</sub>Ge<sub>4</sub>Se<sub>17</sub>]·19H2O2716.66triclinicPa 12.184 b 15.089 c 15.868 α 88.73° β 73.68° γ 71.06° Z=22640.43.412red
Ba3[Mn<sub>6</sub>Ge<sub>4</sub>Se<sub>17</sub>]·30H2OrhombohedralRca 20.463 c 25.11 Z=691093.188orange-red
BaCu2GeSe4P3121a 6.5014 c 16.266red[86]
BaZnGeSe4orthorhombicAma2a = 11.3255 b = 11.2527 c = 6.2917band gap 2.46 eV[87]
LiBa4Ga5Se12orthorhombicP21ca 13.0056 b 13.0056 c 6.2671band gap 2.44 eV[88]
Ba4Ge3Se9Br2hexagonalP63a = 10.2345 c = 12.5306
BaCdGeSe4orthorhombicFdd2a=22.167 b=22.768 c=13.303band gap 1.67 eV; SHG 0.5 × AgGaS2[89]
Ba4GeSb2Se111734.01orthorhombicCmc21a = 9.37 b = 25.85, c = 8.80 Z=421315.404[90]
La4Ge3Se2S10rhombohedralR3ca=19.5575 c=8.14682698.64.605Yellow-orange[91]
La4Ge3Se4S8rhombohedralR3c2745.3Yellow-orange
La4Ge3Se6S6rhombohedralR3c2792.6orange
La4Ge3Se8S4rhombohedralR3c2845.3red
La4Ge3Se10S2rhombohedralR3c2912.1red
lanthanum(III) bis[hexaselenodigermanate]Na9La[Ge<sub>2</sub>Se<sub>6</sub>]2monoclinicC12/m1a =7.974 b=12.337 c=7.114 β=107.101° Ζ=1669.0orange[92]
Ba4LaSbGe3Se13monoclinicP21/ca=16.3330 b=12.5115 c=13.0321 β=103.457° Z=42590.0red; band gap 2.0 eV[93]
[Ce<sub>4</sub>(tepa)<sub>4</sub>(μ-GeSe<sub>4</sub>)(μ-GeSe<sub>5</sub>)(μ-Ge<sub>2</sub>Se<sub>6</sub>) | |triclinic |''P''{{overbar|1}} |''a'' 12.273 ''b'' 16.624 ''c'' 18.281 ''α'' 91.264° ''β'' 101.034° ''γ'' 96.497° | | | |<ref name=":9" /> |- | |KCeGeSe<sub>4</sub> | |monoclinic |''P''2<sub>1</sub> |''a'' = 6.852 ''b'' = 7.025 ''c'' = 9.017 β = 108.116° Z = 2 | | | |<ref>{{Cite journal |last1=Choudhury |first1=Amitava |last2=Polyakova |first2=Larisa A. |last3=Hartenbach |first3=Ingo |last4=Schleid |first4=Thomas |last5=Dorhout |first5=Peter K. |date=November 2006 |title=Synthesis, Structures, and Properties of Layered Quaternary Chalcogenides of the General Formula ALnEQ4 (A = K, Rb; Ln = Ce, Pr, Eu; E = Si, Ge; Q = S, Se) |url=https://onlinelibrary.wiley.com/doi/10.1002/zaac.200600226 |journal=Zeitschrift für anorganische und allgemeine Chemie |language=de |volume=632 |issue=15 |pages=2395–2401 |doi=10.1002/zaac.200600226}}</ref> |- | |Pr(teta)(tren)Cl]2[Ge<sub>2</sub>Se<sub>6</sub>](en)triclinicPa 10.3153 b 10.4707 c 14.0511 α 99.606° β 92.679° γ 119.146°[94]
Nd(teta)(tren)Cl]2[Ge<sub>2</sub>Se<sub>6</sub>](en)triclinicPa 10.2840 b 10.4774 c 14.0341 α 99.655° β 92.651° γ 119.161°
Na9Sm(Ge2Se6)2monoclinicC2/ma = 7.916 b = 12.244 c = 7.105 β = 106.99° Z = 1658.6[95] [96]
Sm2(μ-OH)2(tepa)2(μ-Ge2Se6)monoclinicP21/na 12.10 b 11.41 c 12.71 β 92.81°
Sm(teta)(tren)Cl]2[Ge<sub>2</sub>Se<sub>6</sub>](en)triclinicPa 10.3327 b 10.482 c 14.003 α 77.816° β 87.499° γ 60.62°
NaSmGeSe4·0.25Na2SemonoclinicC2/ca 22.508 b 11.0307 c 6.8261 β 103.038°[97]
KSmGeSe4monoclinicP21a = 6.774 b = 6.994 c = 8.960 β = 108.225° Z = 2403.2[98]
RbSmGeSe4orthorhombicP212121a = 6.7347 b = 7.0185 c = 17.723 Z=4837.7
CsSmGeSeorthorhombicP212121a=6.707 b=7.067 c=18.334 Z=4869.1
Eu2GeSe4monoclinicP21a = 6.964 b = 7.055 c = 8.400 β = 108.12° Z = 2deep red[99]
Eu2GeSe4monoclinicP21/ma = 6.969 b = 7.059 c = 8.516 β = 107.99° Z = 2@673K
Eu2Ge2Se5monoclinicP21/na = 8.421 b = 12.235 c = 9.127 β = 93.67° Z = 4deep red
2(μ-OH)2]Ge2Se6monoclinicP21/na 10.062 b 11.538 c 15.227 β 98.470°[100]
Eu(teta)(tren)Cl]2[Ge<sub>2</sub>Se<sub>6</sub>](en)triclinicPa 10.364 b 10.549 c 14.1157 α 77.299° β 87.606° γ 60.697°
2(μ-Ge2Se8)monoclinicP21/na 12.384 b 11.697 c 12.965 β 94.107°[101]
Na2EuGeSe4cubicI3ma=7.3466 Z=2[102]
Na0.75Eu1.625GeSe4cubicI3da=14.7065 Z=16
K2EuGeSe5monoclinicP21/ca = 11.8056 b = 9.9630 c = 8.9456 β = 91.195° Z = 41051.94.404@167K; band gap 1.84 eV; Eu(II)[103]
EuCdGeSe4orthorhombicAma2a 10.7525 b 10.6275 c 6.6740 Z=4762.65.685red; band gap 2.25 eV; SHG 3.8 × AgGaS2[104]
Gd(teta)(tren)Cl]2[Ge<sub>2</sub>Se<sub>6</sub>](en)triclinicPa 10.310 b 10.495 c 14.055 α 77.50° β 87.51° γ 60.81°
2(μ-Ge2Se8)monoclinicP21/na 12.316 b 11.667 c 12.868 β 93.70°
2(μ-Ge2Se8)monoclinicP21/na 12.329 b 11.627 c 12.882 β 94.177°
[{Dy(en)<small><sub>3</sub></small>}<small><sub>2</sub></small>(μ-OH)<small><sub>2</sub></small>]Ge2Se6a 10.026 b 11.526 c 15.147 β 99.030°
Tb2(tepa)2(μ-OH)2(μ-Ge2Se8)monoclinicP21/na 12.228 b 11.587 c 12.782 β 93.458°
Tb(teta)(tren)Cl]2[Ge<sub>2</sub>Se<sub>6</sub>](en)triclinicPa 10.2303 b 10.4499 c 14.0083 α 99.655° β 92.737° γ 119.069°
[Tb<sub>2</sub>(tepa)<sub>2</sub>(''μ''-OH)<sub>2</sub>(''μ''-Ge<sub>2</sub>Se<sub>6</sub>)]·0.5H2OmonoclinicC2/ca 22.007 b 12.3363 c 18.2590 β 125.196°[105]
[{Ho(en)<sub>3</sub>}<sub>2</sub>(μ-OH)<sub>2</sub>]Ge2Se6monoclinicP21/na 9.997 b 11.550 c 15.109 β 99.289°
[{Ho(dien)<sub>2</sub>}<sub>2</sub>(μ-OH)<sub>2</sub>]Ge2Se6monoclinicP21/na 11.920 b 11.583 c 13.691 β 98.154°
Ho2(μ-OH)2(tepa)2(μ-Ge2Se6)orthorhombicPbcaa 12.1791 b 13.487 c 20.346
(H2peha)[Er<sub>2</sub>(μ-OH)<sub>2</sub>(tepa)<sub>2</sub>Cl<sub>2</sub>][Ge<sub>2</sub>Se<sub>6</sub>]Cl2triclinicPa 9.1544 b 17.382 c 19.443, α 102.994° β 95.306° γ 101.406°
(H3O)[Tm(teta)<sub>2</sub>][Ge<sub>2</sub>Se<sub>6</sub>]orthorhombicPccna 13.7846 b 14.3998 c 17.9221
Tm2(tepa)2(μ-OH)2(μ-Ge2Se6)orthorhombicPbcaa 12.1702 b 13.528 c 20.281
Li2HgGeSe4602.90orthorhombicPna21a=14.150 b=8.260 c=6.692 Z=4782.25.119yellow[106]
Na2Hg3Ge2Se81424.61tetragonalPc2a=9.1938 c=9.5437 Z=2806.695.865red
SrHgGeSe4orthorhombicAma2a 10.8375 b 10.7456 c 6.6377NLO 5 × AgGaS2[107]
BaHgGeSe4orthorhombicAma2a 11.255 b 11.033 c 6.685NLO 5 × AgGaS2
EuHgGeSe4orthorhombicAma2a 10.6530 b 10.5990 c 6.5986band gap; SHG 3.1 × AgGaS2[108]
TlGaGeSe4orthorhombicPnmaa= 17.4742 b= 7.4105 c= 11.9406 Z=81546.225.692red
Tl2Ga2GeSe6tetragonalI4/mmca = 8.0770 c = 6.2572 Z = 4[109]
TlInGeSe4702monoclinicP21/ca= 7.586 b= 12.134 c=18.023 β= 96.037° Z=81649.85.653yellow
TlInGe2Se6trigonalR3a = 10.1798 c = 9.2872band gap 2.38 eV[110]
α-Pb2GeSe4
Na0.5Pb1.75GeSe4cubicI3da = 14.662
PbGa2GeSe6melt 687 °C; phase transition 522 °C[111]
Pb4Ga4GeSe12
Pb3Ga2GeSe8P21cmelt incongruently 656 °C
Sr1.31Pb0.69GeSe4orthorhombicAma2a = 10.31220 b = 10.39320 c = 7.42140
Sr0.19Pb1.81GeSe4I2da = 14.6177
Sr12.6Pb6.4Ge11Se44hexagonalP63a = 19.9867 c = 12.05464170.28black; band gap 1.8 eV[112]
Ag0.5Pb1.75GeS3Seband gap 2.0 eV[113]

Notes and References

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