Aselenophosphate is a chemical compound containingphosphateanions substituted withselenium. Over 7000 compounds are known with a bond between selenium and phosphorus. Compared to phosphorus-sulfur compounds selenophosphates are less thermally stable, and more easily destroyed by water. However they are more stable than tellurophosphates which have an even weaker phosphorus-tellurium bond.[1] Selenophosphates have an oxidation number for phosphorus of +5. But in many there are bonds between phosphorus atoms, reducing the oxidation state to +4, Some may be termed selenophosphites.[2]
Different structural anions include hexaselenohypodiphosphate [P2Se6]4− and [P6Se12]4− with decalin structure and [P4Se2]2− with dicyclobutane structure.[1]
Selenophosphates are coloured, often orange. They are semiconductors.
The first selenodiphosphate was discovered in 1973 by H. Hahn.[3]
Selenophosphate compounds may have some or all of the selenium replaced by sulfur.[4]
Selenophosphates can be produced by meltingphosphorus selenide with metalselenides.
Selenocysteine is produced in many organisms from a selenophosphate. In humans and othereucaryotes, this is facilitated by the enzymeselenophosphate synthetase 1. Selenium is connected to phosphorus using a reaction with selenide andadenosine triphosphate[5]
| formula | name | mw | crystal system | space group | unit cell Å | volume | density | comments | references |
|---|---|---|---|---|---|---|---|---|---|
| [(py2Li)]4[P2Se6]·2py | water stable | [6] | |||||||
| (NH4)4(P2Se6)(H2O)2 | triclinic | P1 | a=7.3306b=7.3761c=9.5501α =70.405°β =74.109°γ =60.681° Z=1 | 420.37 | 2.544 | [7] | |||
| [pyH]4[P2Se6]·H2O | water stable | [6] | |||||||
| (NBu4)2P2Se8 | bis(Tetrabutylammonium) 3,6-diselenoxo-1,2,4,5-tetraselena-3,6-diphosphacyclohexane 3,6-diselenide acetonitrile solvate | monoclinic | P21/c | a 9.6284b 16.9553c 16.0899β 96.875° | chair config | [8] | |||
| (NBu4)3P9Se14 | orange-red | [9] | |||||||
| bis(1-Butyl-3-methylimidazolium) 3,6-diselenoxo-1,2,4,5-tetraselena-3,6-diphosphacyclohexane 3,6-diselenide | monoclinic | P21/n | a =7.6642b =10.9948c =17.0380β =91.211° | chair config | [8] | ||||
| bis(tetrakis(Acetonitrile-N)-lithium) 3,6-diselenoxo-1,2,4,5-tetraselena-3,6-diphosphacyclohexane 3,6-diselenide | orthorhombic | Pbam | a 20.0535(6)Åb 12.1200(5)Åc 15.0831 | cradle config | [8] | ||||
| bis((Tetrapyridine)-lithium) 3,6-diselenoxo-1,2,4,5-tetraselena-3,6-diphosphacyclohexane 3,6-diselenide | triclinic | P1 | a 10.1582b 10.7716c 12.750α 95.271°β 94.847°γ 114.219° | cradle config | [8] | ||||
| Na2P4Se2 | red-brown; P4 bicyclo structure | [10] | |||||||
| Na3PSe4 | cubic | I43m | a=7.3094 Z=2 | 3.53 | Na ion conductor 1 mS cm−1 | [11] | |||
| Na4P2Se6 | orthorhombic | Cmca | a = 11.836b = 13.311c = 8.061Z = 4 | 1270.0 | 3.283 | [12] | |||
| Na4(P2Se6)(H2O)6 | monoclinic | P21/c | a 26.0636b 7.2350c 20.7197β 113.387° Z=8 | 3586.13 | 2.726 | [7] | |||
| Mg2P2Se6 | R3 | a = 6.404c = 20.194 Z=3 | [13] | ||||||
| KPSe6 | orthorhombic | Pca21 | a = 11.49 b = 6.791 c = 11.29Z = 4 | orange; NLOχ(2)≈142.8 pm V−1; band gap 2.1 eV | [14][15][16][17] | ||||
| K4Sc2(PSe4)2(P2Se6) | monoclinic | C2/c | a=22.668Åb=6.8147Åc=19.828β=113.91° | [18] | |||||
| K2P2Se6 | trigonal | P3121 | a = 7.2728,c = 18.872Z = 3 | at 298 K; SHG 50× AgGaSe2 | [19] | ||||
| K2P2Se6 | trigonal | P3121 | a = 14.4916c = 18.7999Z = 12 | at 173 K | [19] | ||||
| K3PSe4·2Se6 | cubic | Fd3 | a = 16.415 | at 193 K | [20] | ||||
| K4(P2Se6)(H2O)4 | orthorhombic | Cmca | a =11.921b =12.46c =11.752 Z=4 | 1745.6 | 2.908 | [7] | |||
| K6P8Se18 | 1903.66 | monoclinic | P21/n | a=9.746 b=8.332 c=23.054β=90.54° Z=2 | 1872.1 | 3.377 | orange | [21] | |
| Ca2P2Se6 | monoclinic | P21/n | a = 9.664b = 7.519c = 6.859 β = 92.02° | [22] | |||||
| K4Sc2(PSe4)2(P2Se6) | 737.82 | monoclinic | C2/c | a=22.668 b=6.815 c=19.828 β =113.91° Z=8 | 2800.2 | 3.500 | orange-yellow; turns red in air; band gap 2.25 eV | [18] | |
| KTiPSe5 | [23] | ||||||||
| K4Ti2(P2Se9)2(P2Se7) | black | [23] | |||||||
| Cr2P2Se6 | [24] | ||||||||
| LiCrP2Se6 | [25] | ||||||||
| MnPSe3 | trigonal | R3 | band gap 2.5 eV | [26][27] | |||||
| K2MnP2Se6 | monoclinic | P21/n | a=6.5349 b=12.696 c=7.589 β=102.67° Z=2 | 614.3 | [28] | ||||
| FePSe3 | [26] | ||||||||
| Fe2P2Se6 | trigonal | R3 | band gap 1.3 eV | [13][27] | |||||
| K2FeP2Se6 | monoclinic | P21/n | a=6.421 b=12.720 c=7.535β=102.58 Z=2 | 600.7 | red | [28] | |||
| CuP2Se | 2D semiconductor; metallises under pressure | [29] | |||||||
| m-Cu4P2Se6 | monoclinic | P21/c | a 6.370b 11.780c 20.013β 90.03° | [30] | |||||
| Cu3PSe4 | orthorhombic | Pmn21 | a=7.700 b=6.677 c=6.385 | 328.3 | [31] | ||||
| t-Cu4P2Se6 | triclinic | P1 | a 7.104b 11.889c 12.759α 74.35°β 79.63°γ 80.85° | [30] | |||||
| Cu4P3Se4 | triclinic | P1 | a 6.440b 7.085c 10.616α 73.11°β 74.86°γ 77.00° | [30] | |||||
| Cu4P4Se3 | monoclinic | P21/c | a 16.446b 6.515c 17.339β 119.08° | [30] | |||||
| CuP2Se | orthorhombic | Pbca | a 5.608b 6.496c 16.570 | [30] | |||||
| CuAl[P2Se6] | trigonal | R3 | a = 6.2795 c = 19.9713 Z =3 | [32] | |||||
| K2Cu2P4Se10 | 1118.78 | monoclinic | P21/n | a=10.627 b=7.767 c=11.966β=109.125° Z=2 | 933.2 | 3.981 | red | [33] | |
| K3Cu3P3Se9 | monoclinic | P21/c | a = 8.741 b = 10.774, c = 20.033, β = 92.96° | [34][35] | |||||
| [Cu12(P2Se6){Se2P(OEt)2}8] | Et=Ethyl; diethyl diselenophosphate hexaselenodiphosphate(IV) | [36] | |||||||
| [Cu12(P2Se6){Se2P(OiPr)2}8] | iPr=isopropyl | [36] | |||||||
| CuCr[P2Se6] | monoclinic | C2/m | a=6.193b=10.724c=6.909β=107.2°Z=2 | 690.2 | 4.9 | melt 730 °C; dark red | [3] | ||
| Zn2P2Se6 | R3 | a = 6.290c = 19.93 Z=3 | [13] | ||||||
| K2ZnP2Se6 | monoclinic | P21/c | a = 12.537b = 7.274c = 14.164β = 109.63°Z = 4 | 1216 | yellow | [37][38] | |||
| LiGaP2Se6 | trigonal | P31c | a = 6.2993c = 13.308 | red; melt 458 °C; band gap 2.01 eV; water and air stable | [25][39] | ||||
| K4GeP4Se12 | orthorhombic | Pca21 | a=13.9465b=7.2435c=24.0511 | [40] | |||||
| K4Ge4-xPxSe12 | monoclinic | P21/c | a = 6.7388b = 13.489c = 6.3904 β = 91.025° | [41] | |||||
| K7As3(P2Se6)4 | monoclinic | P21/c | a=25.0706b=9.5948c=59.6227β=93.384° | melt 388 °C | [42] | ||||
| K6As2(P2Se6)3 | monoclinic | P21/c | a 8.0898b 23.3142c 12.1919β 124.809° | melt 410 °C; orange; band gap 2.2 eV | [42] | ||||
| RbPSe6 | orthorhombic | Pca21 | a = 11.776b = 6.858c = 11.460Z = 4 | NLOχ(2)≈150 pm V−1 | [15][16] | ||||
| Rb2P2Se6 | trigonal | P3121 | a = 7.2982c = 19.002 andZ = 3 | 100 K | [19] | ||||
| Rb4P2Se9 | monoclinic | C2/c | a = 9.725b = 10.468c = 19.155β = 93.627°Z = 4 | 1946.1 | 3.804 | [12] | |||
| Rb4P6Se12 | orthorhombic | Pca21 | a =16.409b =10.64c =15.105 | bicyclic with >PP< bridge and -SePSe2PSe2Se- ring | [43] | ||||
| Rb10P4Se25 | [44] | ||||||||
| Rb4(P2Se6)(H2O)4 | orthorhombic | Pnnm | a 9.834b 12.456c 7.585 Z=2 | 929.1 | 3.395 | [7] | |||
| RbTiPSe5 | [23] | ||||||||
| Rb4Ti2(P2Se9)2(P2Se7) | orthorhombic | Fdd2 | a=35.55 b=37.315 c=6.574 Z=4 | 8772 | 3.956 | black | [23][45] | ||
| Rb2MnP2Se6 | [28] | ||||||||
| Rb2ZnP2Se6 | triclinic | P1 | a = 7.494b = 7.601c = 12.729α = 96.57°β = 105.52°γ = 110.54°Z = 2 | 636.6 | [38] | ||||
| Rb4GeP4Se12 | orthorhombic | Pca21 | a=14.1881b=7.3566c=24.2914 | [40] | |||||
| Rb6Ge2P2Se14 | triclinic | P1 | a = 7.2463b = 9.707c = 11.987 α = 79.516° β = 89.524° γ = 68.281° | band gap 2.2 eV | [41] | ||||
| Sr2P2Se6 | monoclinic | P21/n | a = 9.844b = 7.788c = 6.963 β = 91.50° Z=2 | [22] | |||||
| NaYP2Se6 | 647.6 | triclinic | P1 | a=6.9456 b=7.4085 c=9.5306 α=88.819° β=87.748° γ=89.580° Z=2 | yellow | [46][47] follow up refs | |||
| KYP2Se6 | orthorhombic | P212121 | a = 6.7366b = 7.4286c = 21.603Z = 4 | [46][48] | |||||
| [(Cp′′2Zr)2(μ,η1:1:1:1-P2Se4)] | Cp′′ = C5H3tBu2 | 1269.41 | monoclinic | P21/n | a=15.2831 b=9.91947 c=18.6250β=102.835° Z=2 | 2753 | 1.531 | dark purple | [49] |
| KZrPSe6 | orthorhombic | Pmc21 | a=3.7079b=15.074c=18.491 | [50] | |||||
| RbZrPSe6 | [50] | ||||||||
| KNb2PSe10 | monoclinic | Pc | a=7.2931b=15.612c=13.557β=106.64° | resistivity 4.5 Ω·cm | [51] | ||||
| RbNb2PSe10 | monoclinic | Pc | a=7.381b=7.8359c=13.564β=106.75° | [51] | |||||
| K3RuP5Se10 | monoclinic | P21/m | a 11.2099b 7.2868c 12.3474β 93.958° | [52] | |||||
| PdPSe | semiconductor | [53] | |||||||
| K2PdP2Se6 | [23] | ||||||||
| Rb2PdP2Se6 | [23] | ||||||||
| Ag4P2Se6 | 1013.69 | orthorhombic | P212121 | a=6.5760 b=11.5819 c=14.137 Z=4 | 1076.8 | 5.966 | melt 642 °C; dark red | [54] | |
| AgAl[P2Se6] | monoclinic | C2/m | a=6.348b=10.989c=7.028β=107.2°Z=2 | melt 588 °C; yellow | [3] | ||||
| K2Ag2P2Se6 | monoclinic | P21/c | a=8.528 b=11.251 c=20.975β=93.24° Z=4 | 2009 | orange | [28] | |||
| AgCrP2Se6 | monoclinic | C2/m | a=6.305b=10.917;c=6.991β=107.7°Z=2 | melt 720 °C; dark red | [3] | ||||
| AgCrP2Se6 | P3112 | a=6.3257 c=20.0198 | layered; antiferromagnetic <42K; band gap 1.240 eV | [55] | |||||
| AgGa[P2Se6] | orthorhombic | Pbca | α=12.169b=22.484c=7.473Z=4 | 2044.7 | melt 450 °C; orange | [3] | |||
| AgGa[P2Se6] | trigonal | P31/c | a=6.375c=13.320Z=2 | 468.81 | 5.05 | dark red | [3] | ||
| AgScP2Se6 | 688.54 | trigonal | P31/c | a=6.463 c=13.249 Z=2 | 482.93 | 4.735 | orange or brown | [56] | |
| CdPSe3 | [26] | ||||||||
| K2CdP2Se6 | monoclinic | P21/n | dark yellow | [37] | |||||
| Rb2CdP2Se6 | 819.05 | monoclinic | P21/n | a=6.640b=12.729c=7.778β=98.24°Z=2 | 650.5 | 4.180 | dark yellow; air stable | [37] | |
| Rb8Cd4(Se2)(PSe4)4 | [23] | ||||||||
| InPSe3 | [26] | ||||||||
| In2(P3Se9) | monoclinic | P21/n | [34] | ||||||
| LiInP2Se6 | 657.46 | trigonal | P31/c | a=6.397 c=13.350 Z=2 | 473.15 | 4.615 | band gap 2.06 eV | [57] | |
| (Ph4P)[In(P2Se6)] | monoclinic | C2/c | a = 23.127b = 6.564c = 19.083 β = 97.42°Z = 4 | 2873 | @23 °C yellow | [58] | |||
| KInP2Se6 | monoclinic | P21/n | a=7.511b=6.4861c=22.789β=98.91°Z=4 | 1096.9 | [59] | ||||
| K5In3(μ3-Se)(P2Se6)3 | triclinic | P1 | a 7.6603b 13.1854c 18.378α 87.04°β 88.659°γ 82.025° | [60] | |||||
| K4In4(μ-Se)2(P2Se6)3 | monoclinic | P21/c | a 19.707b 7.712c 13.229α 90°β 106.42° | [60] | |||||
| K4In2(PSe5)2(P2Se6) | monoclinic | Cc | a=11.1564b=22.8771c=12.6525β=109.039°Z=4 | brick-red; air stable | [61] | ||||
| K4In4(μ-Se)(P2S2.36Se3.64)3 | triclinic | P1 | a 7.7709b 13.0007c 18.9382α 105.382°β 92.632°γ 91.91° | [60] | |||||
| CuInP2Se6 | trigonal | P31/c | a=6.392c=13.338Z=2 | 472.0 | 5.0 | melt 642 °C; dark red; phase transitions at 5.4 and 14.1 GPa; metallised at 25.1 GPa | [3][62] | ||
| AgInP2Se6 | trigonal | P31/c | a=6.483c=13.330Z=2 | 485.2 | 5.2 | semiconductor; melt 673 °C; dark red; band gap 1.79 eV | [63][3] | ||
| SnP2Se6 | R3 | a = 6.3213 c = 19.962 | band gap 1.36–1.41 eV | [64] | |||||
| Sn2P2Se6 | [65] | ||||||||
| Na11.1Sn2.1P0.9Se12 | tetragonal | I41/acd | a=14.2446 c=28.473 Z=8 | 5777.4 | 3.403 | Na+ ion conductivity 3.0 mS/cm | [66] | ||
| Rb3Sn(PSe5)(P2Se6) | monoclinic | P21/a | a=14.013b=7.3436c=21.983β=106.61°Z=4 | black | [61] | ||||
| K10Sn3(P2Se6)4 | trigonal | R3 | a = 24.1184c = 7.6482 | @100K; band gap 1.82 eV | [67] | ||||
| Rb4Sn5P4Se20 | 2638.41 | trigonal | P3m1 | a=7.6163 c=18.6898 Z=1 | 938.91 | 4.64 | black | [68] | |
| Rb4Sn2Ag4(P2Se6)2 | monoclinic | P21/n | a=11.189 b=7.688 c=21.850β=94.31° Z=2 | 1874.2 | 4.639 | black | [23][69] | ||
| Rb5[Sn(PSe5)3] | triclinic | P1 | a 11.745b 19.23c 7.278α 99.97°β 107.03°γ 87.16° | [70] | |||||
| Sb4(P2Se6)3 | monoclinic | P21/n | a = 20.777 b = 7.4935 c = 9.4949 β = 91.25° | [71] | |||||
| KSbP2Se6 | 696.55 | [34] | |||||||
| β-KSbP2Se6 | 696.55 | monoclinic | P21 | a=6.8925 b=7.8523 c=10.166β=91.487 Z=2 | 550.4 | 4.203 | dark red | [72] | |
| AgSbP2Se6 | hygroscopic | [73] | |||||||
| α-CsPSe6 | monoclinic | P21/n | a = 6.877b = 12.713c = 11.242 β = 92.735°Z = 4 | orange | [14][15] | ||||
| β-CsPSe6 | 637.64 | tetragonal | P421c | a = 12.526c = 12.781Z = 8 | 2005.3 | 4.224 | red orange; metastable; SHG χ(2) ~30 pm/V | [14] | |
| Cs2P2Se8 | orthorhombic | Ccce | a = 14.982b = 24.579c = 13.065 | band gap 2.44 ± 0.2 eV; P2Se4 ring; third harmonic generator coefficient 2.4 ± 0.1 × 105 pm2/V2 | [74] | ||||
| Cs3PSe4 | orthorhombic | Pnma | a = 10.0146b = 11.990c = 9.9286Z = 4 | 1192.2 | 4.154 | [12] | |||
| Cs4P2Se9 | [23] | ||||||||
| Cs4P2Se10 | triclinic | P1 | a=7.359b=7.455c=10.142α=85.938°,β=88.055°γ=85.609° | [P2Se10]4− | [75] | ||||
| Cs4[P6Se12] | 1664.98 | monoclinic | P21/n | a =10.836b =10.5437c =12.273β =98.661° | 1386.3 | 3.989 | orange; melt 697; NLO | [76] | |
| Cs5[P5Se12] | 1766.92 | tetragonal | P4 | a =13.968c =7.546 Z=2 | 1472.2 | 3.986 | orange; NLO; band gap 2.17 eV | [76][77] | |
| Cs10P8Se20 | orthorhombic | Pnnm | a = 26.5456b = 8.0254c = 11.9031Z = 2 | 2535.8 | 4.133 | (PSe2)3Se rings and P2Se6 | [78] | ||
| Cs4(P2Se6)(H2O)4 | orthorhombic | Pnnm | a=10.0514b=12.6867c=7.8403 Z=2 | 999.8 | 3.775 | [7] | |||
| K0.6Cs0.4PSe6 | orthorhombic | Pca21 | a=11.830 b=6.908 c=11.516 Z=4 | 941.1 | 4.085 | orange; band gap 2.1 eV; SHG χ(2) ~150 pm/V | [14] | ||
| KCsP2Se8 | orthorhombic | Ccce | a = 14.782b = 23.954c = 13.044 | band gap 2.36 ± 0.2 eV | [74] | ||||
| Cs2MnP2Se6 | monoclinic | P21/n | 6.4761 b=13.006 c=7.974β=93.09° Z=2 | 670.6 | [28] | ||||
| Cs2FeP2Se6 | [28] | ||||||||
| Cs2Cu2P2Se6 | monoclinic | P21/c | a=9.958 b=13.067 c=10.720β=102.46° Z=4 | 1363 | dark green | [28] | |||
| Cs2ZnP2Se6 | triclinic | P1 | a = 7.6543b = 7.7006c = 12.737α = 97.007°β = 104.335°γ = 109.241°Z = 2 | 669.5 | yellow; band gap 2.67 eV | [38][77] | |||
| Cs4GeP4Se12 | orthorhombic | Pca21 | a=14.3268b=7.6202c=24.6301 | [40] | |||||
| Cs6As2(P2Se6)3 | monoclinic | P21/c | a=19.5759b=7.9206c=13.0553β=101.914° | orange band gap 2.1 eV | [42] | ||||
| Cs5As(P2Se6)2 | tetragonal | P42/m | a=13.826c=7.5173 | melt 416 °C; red; band gap 2.0 eV | [42] | ||||
| RbCsP2Se8 | orthorhombic | Ccce | band gap 2.41 ± 0.2 eV | [74] | |||||
| CsZrPSe6 | band gap 2.0 eV | [77][50] | |||||||
| CsNb2PSe10 | monoclinic | Pc | a=14.6257b=7.8097c=13.5533β=98.557° | [51] | |||||
| Cs4Pd(PSe4)2 | monoclinic | P21/c | a = 7.491b = 13.340c = 10.030 β = 92.21°Z = 2 | red | [79] | ||||
| Cs10Pd(PSe4)4 | tetragonal | P42c | a = 13.949c = 11.527Z = 4 | red | [79] | ||||
| Cs2PdP2Se6 | tetragonal | P42/mnm | a = 8.5337c = 10.5595Z = 4 | black | [79] | ||||
| Cs2Ag2P2Se6 | monoclinic | P21/n | a=6.807 b=12.517 c=8.462β=95.75° Z=2 | 717.3 | yellow | [28] | |||
| Cs2CdP2Se6 | monoclinic | P21/n | yellow | [37] | |||||
| Cs5In(P2Se6)2 | tetragonal | P42/m | a = 13.886c = 7.597Z = 2 | 1464.9 | @23 °C; dark orange | [58] | |||
| Cs4Sn(P2Se6)2 | 1721.73 | trigonal | R3 | a=7.808 c=37.905 Z=3 | 2001.4 | 4.285 | black | [80] | |
| α-Cs2SnP2Se6 | 920.2 | monoclinic | P21/c | a=10.230 b =12.990 c=10.949 β=94.529° | 1450.5 | 4.2126 | orange | [80] | |
| Cs2SnP2Se6 | monoclinic | P21/c | a = 10.1160b = 12.7867c = 11.0828 β = 94.463° | @100K | [67] | ||||
| Cs4(Sn3Se8)[Sn(P2Se6)]2 | 2828.17 | tyrigonal | P3m1 | a=7.695 c=18.797 Z=1 | 964.0 | 4.872 | black; 2D | [80] | |
| Cs6[Sn2Se4(PSe5)2] | triclinic | P1 | a 9.899b 12.416c 7.497α 91.62°β 110.19°γ 79.94° | [70] | |||||
| CuSbP2Se6 | C2/m | [81] | |||||||
| AgSbP2Se6 | C2/m | [81] | |||||||
| Cs8Sb4(P2Se6)5 | [34] | ||||||||
| Ba2P2Se6 | monoclinic | P21/n | a = 10.355b = 7.862c = 7.046 β = 90.83° Z=2 | [22] | |||||
| Ba3(PSe4)2 | monoclinic | P21/a | a = 12.282b = 6.906c = 18.061β = 90.23°Z = 4 | [82][83] | |||||
| Ba3PO4PSe4 | triclinic | P1 | a=6.779 b=7.108 c=12.727 α=82.45 β=78.88 γ=81.34 Z=2 | orange | [82] | ||||
| KBaPSe4 | orthorhombic | Pnma | a=11.972 b=6.973 c=10.388 Z=4 | pale orange | [82] | ||||
| KLaP2Se6 | 713.71 | monoclinic | P21/c | a=12.425 b=7.8047 c=11.9279 β=109.612° | 1089.6 | 4.351 | yellow | [34] | |
| K2La(P2Se6)1/2(PSe4) | monoclinic | P21/n | a = 9.4269b = 7.2054c = 21.0276 β = 97.484°Z = 4 | [84] | |||||
| K3La(PSe4)2 | monoclinic | P21/c | a = 9.5782b = 17.6623c = 9.9869 β = 90.120°Z = 4 | [84] | |||||
| K3LaP2Se8 | [85] | ||||||||
| K4La0.67(PSe4)2 | orthorhombic | Ibam | a = 19.0962b = 9.1408c = 10.2588Z = 4 | [84] | |||||
| K6LaP4Se16 | |||||||||
| K8.5La1+1/3(PSe4)4 | orthorhombic | Ccca | a = 18.2133b = 38.0914c = 10.2665Z = 8 | [84] | |||||
| Ce4(P2Se6)3 | 722.06 | monoclinic | P21/c | a = 6.8057b = 22.969c = 11.7226 β = 124.096°Z = 6 | 4.741 | orange | [86] | ||
| NaCeP2Se6 | monoclinic | P21/c | a = 12.1422b = 7.6982c = 11.7399 β = 111.545° Z=4 | yellow | [86] | ||||
| KCeP2Se6 | monoclinic | P21/c | [46] | ||||||
| Cu0.4Ce1.2P2Se6 | monoclinic | P21/c | a = 12.040b = 7.6418c = 11.700 β = 111.269° Z = 4 | yellow | [86] | ||||
| Rb2CeP2Se7 | monoclinic | P21/n | red; air sensitive | [87] | |||||
| Rb3CeP2Se8 | 1090.13 | monoclinic | P21/c | a = 9.6013b = 18.0604c = 10.0931 β = 90.619°Z = 4 | 1750.07 | 4.137 | orange; air sensitive | [87] | |
| Rb9Ce(PSe4)4 | monoclinic | C2/c | a=21.446 b=10.575 c=18.784 β =115.94° Z=4 | 3831 | 3.980 | orange; air and water destroyed; soluble in 18-crown-6 + dmf; band gap 2.26 eV | [44] | ||
| AgCeP2Se6 | monoclinic | P21/c | a = 9.971b = 7.482c = 11.757 β = 145.630° Z=2 | orange | [86] | ||||
| CsCe[P2Se6] | monoclinic | P21/c | a = 12.9786b = 7.7624c = 11.9843β = 106.589°Z = 4 | [88] | |||||
| KPrP2Se6 | monoclinic | P21/c | [46] | ||||||
| Cs2PrP2Se7 | monoclinic | P21/n | a=10.2118 b=7.2423 c=20.3741 β =98.624° Z=4 | [89] | |||||
| Eu2P2Se6 | monoclinic | P21/n | a = 9.779b = 7.793c = 6.957 β = 91.29° Z=2 | [22] | |||||
| LiEuPSe4 | orthorhombic | Ama2 | a = 10.5592b = 10.415c = 6.4924Z = 4 | red; air unstable | [90] | ||||
| Na8Eu2(Si2Se6)2 | monoclinic | C2/m | a=7.090b=12.228c=7.950β=107.427°Z = 1 | 657.6 | [91] | ||||
| KEuPSe4 | monoclinic | P21/m | a = 6.8469b = 6.9521c = 9.0436 β = 107.677°Z = 2 | red; air unstable | [90] | ||||
| KEuPSe4 | orthorhombic | Pnma | a = 17.516b = 7.0126c = 6.9015Z = 4 | [84] | |||||
| K4Eu(PSe4)2 | orthorhombic | Ibam | a = 19.020b = 9.131c = 10.198Z = 4 | [34][92] | |||||
| Cs3GdP2Se8 | monoclinic | P21/c | [87] | ||||||
| NaSmP2Se6 | 709.94 | triclinic | P1 | a 6.8368b 7.5312c 9.557α 90.799°β 91.910°γ 90.351° Z=2 | red | [46] | |||
| Na9Sm(Ge2Se6)2 | monoclinic | C2/m | a = 7.916b = 12.244c = 7.105β = 106.99°Z = 1 | 658.6 | [91] | ||||
| KSmP2Se6 | 725.15 | monoclinic | P21 | a=6.7888 b=7.6185 c=10.1962β=91.508 Z=2 | 527.17 | 4.568 | red | [93] | |
| CsSmP2Se6 | orthorhombic | P212121 | a = 6.8867b = 7.5448c = 22.152Z = 4 | [46][88] | |||||
| NaGdP2Se6 | 715.94 | triclinic | P1 | a 6.8464b 7.4916c 9.5372α 90.813°β 92.026°γ 90.241° Z=2 | yellow | [46] | |||
| KGdP2Se6 | monoclinic | P21 | a=6.7802 b=7.5809 c=10.1967β=91.638 Z=2 | 523.97 | 4.640 | yellow | [46][93] | ||
| Rb2GdP2Se7 | 1037.73 | monoclinic | P21/n | a = 10.137b = 7.212c = 20.299 β = 98.23°Z = 4 | 1468.8 | 4.692 | orange; air sensitive | [87] | |
| NaTbP2Se6 | 717.61 | triclinic | P1 | a 6.8854b 7.4580c 9.5196α 89.068°β 87.899°γ 89.974° Z=2 | yellow | [46] | |||
| KTbP2Se6 | monoclinic | P21 | a=6.7609 b=7.5570 c=10.2158β=91.732 Z=2 | 521.71 | 4.671 | yellow | [46][93] | ||
| KTbP2Se6 | orthorhombic | red over 9.2 GPa | [94] | ||||||
| NaDyP2Se6 | 721.19 | triclinic | P1 | a 6.9114b 7.4258c 9.5256α 88.914°β 87.829°γ 89.695° Z=2 | yellow | [46] | |||
| CsEr[P2Se6] | monoclinic | P21/c | a = 7.5381b = 12.8192c = 12.7647β = 106.898°Z = 4 | [88] | |||||
| AgErP2Se6 | 810.83 | trigonal | P31/c | a=6.578 c=13.410 Z=2 | 502.6 | 5.358 | dark brown | [56] | |
| AgTmP2Se6 | 812.50 | trigonal | P31/c | a=6.567 c=13.422 Z=2 | 501.27 | 5.383 | dark brown | [56] | |
| K3AuP2Se8 | monoclinic | Cc | a = 7.122b = 12.527c = 18.666 β = 96.06°Z = 4 | [95] | |||||
| Rb3AuP2Se8 | monoclinic | Cc | [95] | ||||||
| Cs3AuP2Se8 | monoclinic | Cc | [95] | ||||||
| K2Au2P2Se6 | monoclinic | C2/m | a = 12.289b = 7.210c = 8.107 β = 115.13°Z = 2 | black | [95] | ||||
| Rb2Au2P2Se6 | monoclinic | C2/m | [95] | ||||||
| Rb2Au2P2Se6 | monoclinic | P21/n | a=11.961 b=10.069 c=32.137β=91.37° Z=12 | 3869 | 4.653 | @-120 °C black | [96] | ||
| Hg2P2Se6 | [34][97] | ||||||||
| K2HgP2Se6 | monoclinic | P21/c | a=13.031b=7.308c=14.167β=110.63°Z=4 | 1262.6 | 4.285 | dark yellow | [37] | ||
| Rb2HgP2Se6 | monoclinic | P21/c | drak yellow | [37] | |||||
| Rb8Hg4(Se2)(PSe4)4 | P42/n | a=17.654c=7.226 | [23][98] | ||||||
| Tl4P2Se6 | trigonal | R3 | a=6.3808 c= 20.014 | melt 963 K | [34][99] | ||||
| TlInP2Se6 | triclinic | P1 | a=6.4488 b=7.5420 c=12.166α=100.72°β=93.63°γ=113.32° | melt 875K | [100][99] | ||||
| TlSbP2Se6 | monoclinic | P21 | a = 6.843 b = 7.841 c = 9.985 β = 90.77° Z = 2 | melt 720K; band gap 1.75 eV | [101] | ||||
| Pb2P2Se6 | monoclinic | Pn | a = 9.742 b = 7.662 c = 6.898 β=91.44° Z=2 | 514.73 | 6.13 | melt 812 °C;band gap 1.88 eV;photoconductor | [34][102][103] | ||
| Na1.5Pb0.75PSe4 | cubic | I43d | a=14.3479Z=16 | band gap 2 eV | [104] | ||||
| RbPbPSe4 | red water stable | [92] | |||||||
| Rb4Pb(PSe4)2 | orthorhombic | Ibam | a = 19.134b = 9.369c = 10.488Z = 4 | orange water unstable | [92] | ||||
| CsPbPSe4 | orthorhombic | Pnma | a = 18.607b = 7.096c = 6.612Z = 4 | red water stable | [92] | ||||
| Cs4Pb(PSe4)2 | orange water unstable | [92] | |||||||
| Bi4(P2Se6)3 | monoclinic | P21/n | a = 20.869 b = 7.4745 c = 9.5923 β = 91.73° | [71] | |||||
| β-Bi4(P2Se6)3 | triclinic | P1 | a = 12.2303b = 6.7640c = 17.866 α = 90.493° β = 94.133° γ = 91.163° | black | [105] | ||||
| KBiP2Se6 | 783.78 | monoclinic | P21 | a 6.9183b 7.663c 10.239β 91.508° Z=2 | 542.6 | 4.797 | [34][72] | ||
| CuBiP2Se6 | R3 | a = 6.553c = 39.76 | lamellar; p-type semiconductor; work function 5.26 eV | [106][107] | |||||
| AgBiP2Se6 | R3 | a = 6.652c = 39.61 | lamellar | [106] | |||||
| Cs5BiP4Se12 | orthorhombic | Pmc21 | a = 7.5357b = 13.7783c = 28.0807Z = 4 | band gap 1.85 eV; melt 590 °C | [108] | ||||
| α-TlBiP2Se6 | monoclinic | P2l/c | a =12.539b =7.499c =12.248β =113.731° | chains; band gap 1.23,1eV | [109] | ||||
| β-TlBiP2Se6 | monoclinic | P2l/c | a =12.25b =7.5518c =22.834β =97.65° | melt 544 °C; layers; band gap 1.27 eV | [109] | ||||
| K2ThP3Se9 | triclinic | P1 | a = 10.4582b = 16.5384c = 10.2245α = 107.637 β = 91.652γ = 90.343°Z = 2 | [110] | |||||
| β-K2ThP3Se9 | monoclinic | P21/n | a = 10.2697 b = 7.7765 c = 20.472 β = 92.877° Z = 4 | yellow | [111] | ||||
| Rb2ThP3Se9 | triclinic | P1 | a = 10.5369b = 16.6914,c = 10.2864 α = 107.614° β = 92.059° γ = 90.409°Z = 2 | [110] | |||||
| Rb7Th2P6Se21 | triclinic | P1 | a = 11.531b = 12.359c = 16.161 α = 87.289° β = 75.903° γ = 88.041°Z = 2 | red; band gap 2.0 eV | [112] | ||||
| Cs4Th4P4Se26 | orthorhombic | Pbca | a = 12.0130b = 14.5747c = 27.134Z = 8 | orange; (P2Se9)6- anion | [113] | ||||
| Cs4Th2P5Se17 | monoclinic | P2l/c | a = 10.238b = 32.182c = 10.749 β = 95.832°Z = 4 | [110] | |||||
| K2UP3Se9 | triclinic | P1 | a = 10.407( b = 16.491 c = 10.143 α= 107.51° β = 91.74° γ = 90.28° Z = 4 | black | [23][114] | ||||
| Rb4U2P5Se17 | triclinic | P1 | a =10.0824b = 10.6905c = 15.7845α = 84.678β = 76.125γ = 85.874° | @100K | [115] | ||||
| Rb4U4P4Se26 | 3470.84 | orthorhombic | Pbca | a=11.9779 b=14.4874 c=27.1377 Z=4 | 4709.17 | 4.895 | U5+ | [116] | |
| Cs2U2(P2Se9)(Se2)2 | orthorhombic | Pbca | a 11.769b 14.389c 26.537 | black | [117] |