A selenophosphate is a chemical compound containing phosphate anions substituted with selenium. 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 melting phosphorus selenide with metal selenides.
Selenocysteine is produced in many organisms from a selenophosphate. In humans and other eucaryotes, this is facilitated by the enzyme selenophosphate synthetase 1. Selenium is connected to phosphorus using a reaction with selenide and adenosine 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=7.3306 b=7.3761 c=9.5501 α =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 9.6284 b 16.9553 c 16.0899 β 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 =7.6642 b =10.9948 c =17.0380 β =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)Å b 12.1200(5)Å c 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 10.1582 b 10.7716 c 12.750 α 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 = 11.836 b = 13.311 c = 8.061 Z = 4 | 1270.0 | 3.283 | [12] | |||
Na4(P2Se6)(H2O)6 | monoclinic | P21/c | a 26.0636 b 7.2350 c 20.7197 β 113.387° Z=8 | 3586.13 | 2.726 | [7] | |||
Mg2P2Se6 | R3 | a = 6.404 c = 20.194 Z=3 | [13] | ||||||
KPSe6 | orthorhombic | Pca21 | a = 11.49 b = 6.791 c = 11.29 Z = 4 | orange; NLO χ(2)≈142.8 pm V−1; band gap 2.1 eV | [14][15][16][17] | ||||
K4Sc2(PSe4)2(P2Se6) | monoclinic | C2/c | a=22.668Å b=6.8147Å c=19.828 β=113.91° | [18] | |||||
K2P2Se6 | trigonal | P3121 | a = 7.2728, c = 18.872 Z = 3 | at 298 K; SHG 50× AgGaSe2 | [19] | ||||
K2P2Se6 | trigonal | P3121 | a = 14.4916 c = 18.7999 Z = 12 | at 173 K | [19] | ||||
K3PSe4·2Se6 | cubic | Fd3 | a = 16.415 | at 193 K | [20] | ||||
K4(P2Se6)(H2O)4 | orthorhombic | Cmca | a =11.921 b =12.46 c =11.752 Z=4 | 1745.6 | 2.908 | [7] | |||
K6P8Se18 | 1903.66 | monoclinic | P21/n | a=9.746 b=8.332 c=23.054 β=90.54° Z=2 | 1872.1 | 3.377 | orange | [21] | |
Ca2P2Se6 | monoclinic | P21/n | a = 9.664 b = 7.519 c = 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 | [23] | |
KTiPSe5 | [24] | ||||||||
K4Ti2(P2Se9)2(P2Se7) | black | [24] | |||||||
Cr2P2Se6 | [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=7.535 β=102.58 Z=2 | 600.7 | red | [28] | |||
CuP2Se | 2D semiconductor; metallises under pressure | [29] | |||||||
m-Cu4P2Se6 | monoclinic | P21/c | a 6.370 b 11.780 c 20.013 β 90.03° | [30] | |||||
Cu3PSe4 | orthorhombic | Pmn21 | a=7.700 b=6.677 c=6.385 | 328.3 | [31] | ||||
t-Cu4P2Se6 | triclinic | P1 | a 7.104 b 11.889 c 12.759 α 74.35° β 79.63° γ 80.85° | [30] | |||||
Cu4P3Se4 | triclinic | P1 | a 6.440 b 7.085 c 10.616 α 73.11° β 74.86° γ 77.00° | [30] | |||||
Cu4P4Se3 | monoclinic | P21/c | a 16.446 b 6.515 c 17.339 β 119.08° | [30] | |||||
CuP2Se | orthorhombic | Pbca | a 5.608 b 6.496 c 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=11.966 β=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=6.193 b=10.724 c=6.909 β=107.2° Z=2 | 690.2 | 4.9 | melt 730 °C; dark red | [3] | ||
Zn2P2Se6 | R3 | a = 6.290 c = 19.93 Z=3 | [13] | ||||||
K2ZnP2Se6 | monoclinic | P21/c | a = 12.537 b = 7.274 c = 14.164 β = 109.63° Z = 4 | 1216 | yellow | [37][38] | |||
K4GeP4Se12 | orthorhombic | Pca21 | a=13.9465 b=7.2435 c=24.0511 | [39] | |||||
K4Ge4-xPxSe12 | monoclinic | P21/c | a = 6.7388 b = 13.489 c = 6.3904 β = 91.025° | [40] | |||||
K7As3(P2Se6)4 | monoclinic | P21/c | a=25.0706 b=9.5948 c=59.6227 β=93.384° | melt 388 °C | [41] | ||||
K6As2(P2Se6)3 | monoclinic | P21/c | a 8.0898 b 23.3142 c 12.1919 β 124.809° | melt 410 °C; orange; band gap 2.2 eV | [41] | ||||
RbPSe6 | orthorhombic | Pca21 | a = 11.776 b = 6.858 c = 11.460 Z = 4 | NLO χ(2)≈150 pm V−1 | [15][16] | ||||
Rb2P2Se6 | trigonal | P3121 | a = 7.2982 c = 19.002 and Z = 3 | 100 K | [19] | ||||
Rb4P2Se9 | monoclinic | C2/c | a = 9.725 b = 10.468 c = 19.155 β = 93.627° Z = 4 | 1946.1 | 3.804 | [12] | |||
Rb4P6Se12 | orthorhombic | Pca21 | a =16.409 b =10.64 c =15.105 | bicyclic with >PP< bridge and -SePSe2PSe2Se- ring | [42] | ||||
Rb10P4Se25 | [43] | ||||||||
Rb4(P2Se6)(H2O)4 | orthorhombic | Pnnm | a 9.834 b 12.456 c 7.585 Z=2 | 929.1 | 3.395 | [7] | |||
RbTiPSe5 | [24] | ||||||||
Rb4Ti2(P2Se9)2(P2Se7) | orthorhombic | Fdd2 | a=35.55 b=37.315 c=6.574 Z=4 | 8772 | 3.956 | black | [24][44] | ||
Rb2MnP2Se6 | [28] | ||||||||
Rb2ZnP2Se6 | triclinic | P1 | a = 7.494 b = 7.601 c = 12.729 α = 96.57° β = 105.52° γ = 110.54° Z = 2 | 636.6 | [38] | ||||
Rb4GeP4Se12 | orthorhombic | Pca21 | a=14.1881 b=7.3566 c=24.2914 | [39] | |||||
Rb6Ge2P2Se14 | triclinic | P1 | a = 7.2463 b = 9.707 c = 11.987 α = 79.516° β = 89.524° γ = 68.281° | band gap 2.2 eV | [40] | ||||
Sr2P2Se6 | monoclinic | P21/n | a = 9.844 b = 7.788 c = 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 | [45][46] follow up refs | |||
KYP2Se6 | orthorhombic | P212121 | a = 6.7366 b = 7.4286 c = 21.603 Z = 4 | [45][47] | |||||
[(Cp′′2Zr)2(μ,η1:1:1:1-P2Se4)] | Cp′′ = C5H3tBu2 | 1269.41 | monoclinic | P21/n | a=15.2831 b=9.91947 c=18.6250 β=102.835° Z=2 | 2753 | 1.531 | dark purple | [48] |
KZrPSe6 | orthorhombic | Pmc21 | a=3.7079 b=15.074 c=18.491 | [49] | |||||
RbZrPSe6 | [49] | ||||||||
KNb2PSe10 | monoclinic | Pc | a=7.2931 b=15.612 c=13.557 β=106.64° | resistivity 4.5 Ω·cm | [50] | ||||
RbNb2PSe10 | monoclinic | Pc | a=7.381 b=7.8359 c=13.564 β=106.75° | [50] | |||||
K3RuP5Se10 | monoclinic | P21/m | a 11.2099 b 7.2868 c 12.3474 β 93.958° | [51] | |||||
PdPSe | semiconductor | [52] | |||||||
K2PdP2Se6 | [24] | ||||||||
Rb2PdP2Se6 | [24] | ||||||||
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 | [53] | |
AgAl[P2Se6] | monoclinic | C2/m | a=6.348 b=10.989 c=7.028 β=107.2° Z=2 | melt 588 °C; yellow | [3] | ||||
K2Ag2P2Se6 | monoclinic | P21/c | a=8.528 b=11.251 c=20.975 β=93.24° Z=4 | 2009 | orange | [28] | |||
AgCrP2Se6 | monoclinic | C2/m | a=6.305 b=10.917; c=6.991 β=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 | [54] | |||||
AgGa[P2Se6] | orthorhombic | Pbca | α=12.169 b=22.484 c=7.473 Z=4 | 2044.7 | melt 450 °C; orange | [3] | |||
AgGa[P2Se6] | trigonal | P31/c | a=6.375 c=13.320 Z=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 | [55] | |
CdPSe3 | [26] | ||||||||
K2CdP2Se6 | monoclinic | P21/n | dark yellow | [37] | |||||
Rb2CdP2Se6 | 819.05 | monoclinic | P21/n | a=6.640 b=12.729 c=7.778 β=98.24° Z=2 | 650.5 | 4.180 | dark yellow; air stable | [37] | |
Rb8Cd4(Se2)(PSe4)4 | [24] | ||||||||
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 | [56] | |
(Ph4P)[In(P2Se6)] | monoclinic | C2/c | a = 23.127 b = 6.564 c = 19.083 β = 97.42° Z = 4 | 2873 | @23 °C yellow | [57] | |||
KInP2Se6 | monoclinic | P21/n | a=7.511 b=6.4861 c=22.789 β=98.91° Z=4 | 1096.9 | [58] | ||||
K5In3(μ3-Se)(P2Se6)3 | triclinic | P1 | a 7.6603 b 13.1854 c 18.378 α 87.04° β 88.659° γ 82.025° | [59] | |||||
K4In4(μ-Se)2(P2Se6)3 | monoclinic | P21/c | a 19.707 b 7.712 c 13.229 α 90° β 106.42° | [59] | |||||
K4In2(PSe5)2(P2Se6) | monoclinic | Cc | a=11.1564 b=22.8771 c=12.6525 β=109.039° Z=4 | brick-red; air stable | [60] | ||||
K4In4(μ-Se)(P2S2.36Se3.64)3 | triclinic | P1 | a 7.7709 b 13.0007 c 18.9382 α 105.382° β 92.632° γ 91.91° | [59] | |||||
CuInP2Se6 | trigonal | P31/c | a=6.392 c=13.338 Z=2 | 472.0 | 5.0 | melt 642 °C; dark red | [3] | ||
AgInP2Se6 | trigonal | P31/c | a=6.483 c=13.330 Z=2 | 485.2 | 5.2 | semiconductor; melt 673 °C; dark red; band gap 1.79 eV | [61][3] | ||
SnP2Se6 | R3 | a = 6.3213 c = 19.962 | band gap 1.36–1.41 eV | [62] | |||||
Sn2P2Se6 | [63] | ||||||||
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 | [64] | ||
Rb3Sn(PSe5)(P2Se6) | monoclinic | P21/a | a=14.013 b=7.3436 c=21.983 β=106.61° Z=4 | black | [60] | ||||
K10Sn3(P2Se6)4 | trigonal | R3 | a = 24.1184 c = 7.6482 | @100K; band gap 1.82 eV | [65] | ||||
Rb4Sn5P4Se20 | 2638.41 | trigonal | P3m1 | a=7.6163 c=18.6898 Z=1 | 938.91 | 4.64 | black | [66] | |
Rb4Sn2Ag4(P2Se6)2 | monoclinic | P21/n | a=11.189 b=7.688 c=21.850 β=94.31° Z=2 | 1874.2 | 4.639 | black | [24][67] | ||
Rb5[Sn(PSe5)3] | triclinic | P1 | a 11.745 b 19.23 c 7.278 α 99.97° β 107.03° γ 87.16° | [68] | |||||
Sb4(P2Se6)3 | monoclinic | P21/n | a = 20.777 b = 7.4935 c = 9.4949 β = 91.25° | [69] | |||||
KSbP2Se6 | 696.55 | [34] | |||||||
β-KSbP2Se6 | 696.55 | monoclinic | P21 | a=6.8925 b=7.8523 c=10.166 β=91.487 Z=2 | 550.4 | 4.203 | dark red | [70] | |
AgSbP2Se6 | hygroscopic | [71] | |||||||
α-CsPSe6 | monoclinic | P21/n | a = 6.877 b = 12.713 c = 11.242 β = 92.735° Z = 4 | orange | [14][15] | ||||
β-CsPSe6 | 637.64 | tetragonal | P421c | a = 12.526 c = 12.781 Z = 8 | 2005.3 | 4.224 | red orange; metastable; SHG χ(2) ~30 pm/V | [14] | |
Cs2P2Se8 | orthorhombic | Ccce | a = 14.982 b = 24.579 c = 13.065 | band gap 2.44 ± 0.2 eV; P2Se4 ring; third harmonic generator coefficient 2.4 ± 0.1 × 105 pm2/V2 | [72] | ||||
Cs3PSe4 | orthorhombic | Pnma | a = 10.0146 b = 11.990 c = 9.9286 Z = 4 | 1192.2 | 4.154 | [12] | |||
Cs4P2Se9 | [24] | ||||||||
Cs4P2Se10 | triclinic | P1 | a=7.359 b=7.455 c=10.142 α=85.938°, β=88.055° γ=85.609° | [P2Se10]4− | [73] | ||||
Cs4[P6Se12] | 1664.98 | monoclinic | P21/n | a =10.836 b =10.5437 c =12.273 β =98.661° | 1386.3 | 3.989 | orange; melt 697; NLO | [74] | |
Cs5[P5Se12] | 1766.92 | tetragonal | P4 | a =13.968 c =7.546 Z=2 | 1472.2 | 3.986 | orange; NLO; band gap 2.17 eV | [74][75] | |
Cs10P8Se20 | orthorhombic | Pnnm | a = 26.5456 b = 8.0254 c = 11.9031 Z = 2 | 2535.8 | 4.133 | (PSe2)3Se rings and P2Se6 | [76] | ||
Cs4(P2Se6)(H2O)4 | orthorhombic | Pnnm | a=10.0514 b=12.6867 c=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 = 14.782 b = 23.954 c = 13.044 | band gap 2.36 ± 0.2 eV | [72] | ||||
Cs2MnP2Se6 | monoclinic | P21/n | 6.4761 b=13.006 c=7.974 β=93.09° Z=2 | 670.6 | [28] | ||||
Cs2FeP2Se6 | [28] | ||||||||
Cs2Cu2P2Se6 | monoclinic | P21/c | a=9.958 b=13.067 c=10.720 β=102.46° Z=4 | 1363 | dark green | [28] | |||
Cs2ZnP2Se6 | triclinic | P1 | a = 7.6543 b = 7.7006 c = 12.737 α = 97.007° β = 104.335° γ = 109.241° Z = 2 | 669.5 | yellow; band gap 2.67 eV | [38][75] | |||
Cs4GeP4Se12 | orthorhombic | Pca21 | a=14.3268 b=7.6202 c=24.6301 | [39] | |||||
Cs6As2(P2Se6)3 | monoclinic | P21/c | a=19.5759 b=7.9206 c=13.0553 β=101.914° | orange band gap 2.1 eV | [41] | ||||
Cs5As(P2Se6)2 | tetragonal | P42/m | a=13.826 c=7.5173 | melt 416 °C; red; band gap 2.0 eV | [41] | ||||
RbCsP2Se8 | orthorhombic | Ccce | band gap 2.41 ± 0.2 eV | [72] | |||||
CsZrPSe6 | band gap 2.0 eV | [75][49] | |||||||
CsNb2PSe10 | monoclinic | Pc | a=14.6257 b=7.8097 c=13.5533 β=98.557° | [50] | |||||
Cs4Pd(PSe4)2 | monoclinic | P21/c | a = 7.491 b = 13.340 c = 10.030 β = 92.21° Z = 2 | red | [77] | ||||
Cs10Pd(PSe4)4 | tetragonal | P42c | a = 13.949 c = 11.527 Z = 4 | red | [77] | ||||
Cs2PdP2Se6 | tetragonal | P42/mnm | a = 8.5337 c = 10.5595 Z = 4 | black | [77] | ||||
Cs2Ag2P2Se6 | monoclinic | P21/n | a=6.807 b=12.517 c=8.462 β=95.75° Z=2 | 717.3 | yellow | [28] | |||
Cs2CdP2Se6 | monoclinic | P21/n | yellow | [37] | |||||
Cs5In(P2Se6)2 | tetragonal | P42/m | a = 13.886 c = 7.597 Z = 2 | 1464.9 | @23 °C; dark orange | [57] | |||
Cs4Sn(P2Se6)2 | 1721.73 | trigonal | R3 | a=7.808 c=37.905 Z=3 | 2001.4 | 4.285 | black | [78] | |
α-Cs2SnP2Se6 | 920.2 | monoclinic | P21/c | a=10.230 b =12.990 c=10.949 β=94.529° | 1450.5 | 4.2126 | orange | [78] | |
Cs2SnP2Se6 | monoclinic | P21/c | a = 10.1160 b = 12.7867 c = 11.0828 β = 94.463° | @100K | [65] | ||||
Cs4(Sn3Se8)[Sn(P2Se6)]2 | 2828.17 | tyrigonal | P3m1 | a=7.695 c=18.797 Z=1 | 964.0 | 4.872 | black; 2D | [78] | |
Cs6[Sn2Se4(PSe5)2] | triclinic | P1 | a 9.899 b 12.416 c 7.497 α 91.62° β 110.19° γ 79.94° | [68] | |||||
CuSbP2Se6 | C2/m | [79] | |||||||
AgSbP2Se6 | C2/m | [79] | |||||||
Cs8Sb4(P2Se6)5 | [34] | ||||||||
Ba2P2Se6 | monoclinic | P21/n | a = 10.355 b = 7.862 c = 7.046 β = 90.83° Z=2 | [22] | |||||
Ba3(PSe4)2 | monoclinic | P21/a | a = 12.282 b = 6.906 c = 18.061 β = 90.23° Z = 4 | [80][81] | |||||
Ba3PO4PSe4 | triclinic | P1 | a=6.779 b=7.108 c=12.727 α=82.45 β=78.88 γ=81.34 Z=2 | orange | [80] | ||||
KBaPSe4 | orthorhombic | Pnma | a=11.972 b=6.973 c=10.388 Z=4 | pale orange | [80] | ||||
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 = 9.4269 b = 7.2054 c = 21.0276 β = 97.484° Z = 4 | [82] | |||||
K3La(PSe4)2 | monoclinic | P21/c | a = 9.5782 b = 17.6623 c = 9.9869 β = 90.120° Z = 4 | [82] | |||||
K3LaP2Se8 | [83] | ||||||||
K4La0.67(PSe4)2 | orthorhombic | Ibam | a = 19.0962 b = 9.1408 c = 10.2588 Z = 4 | [82] | |||||
K6LaP4Se16 | |||||||||
K8.5La1+1/3(PSe4)4 | orthorhombic | Ccca | a = 18.2133 b = 38.0914 c = 10.2665 Z = 8 | [82] | |||||
Ce4(P2Se6)3 | 722.06 | monoclinic | P21/c | a = 6.8057 b = 22.969 c = 11.7226 β = 124.096° Z = 6 | 4.741 | orange | [84] | ||
NaCeP2Se6 | monoclinic | P21/c | a = 12.1422 b = 7.6982 c = 11.7399 β = 111.545° Z=4 | yellow | [84] | ||||
KCeP2Se6 | monoclinic | P21/c | [45] | ||||||
Cu0.4Ce1.2P2Se6 | monoclinic | P21/c | a = 12.040 b = 7.6418 c = 11.700 β = 111.269° Z = 4 | yellow | [84] | ||||
Rb2CeP2Se7 | monoclinic | P21/n | red; air sensitive | [85] | |||||
Rb3CeP2Se8 | 1090.13 | monoclinic | P21/c | a = 9.6013 b = 18.0604 c = 10.0931 β = 90.619° Z = 4 | 1750.07 | 4.137 | orange; air sensitive | [85] | |
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 | [43] | ||
AgCeP2Se6 | monoclinic | P21/c | a = 9.971 b = 7.482 c = 11.757 β = 145.630° Z=2 | orange | [84] | ||||
CsCe[P2Se6] | monoclinic | P21/c | a = 12.9786 b = 7.7624 c = 11.9843 β = 106.589° Z = 4 | [86] | |||||
KPrP2Se6 | monoclinic | P21/c | [45] | ||||||
Cs2PrP2Se7 | monoclinic | P21/n | a=10.2118 b=7.2423 c=20.3741 β =98.624° Z=4 | [87] | |||||
Eu2P2Se6 | monoclinic | P21/n | a = 9.779 b = 7.793 c = 6.957 β = 91.29° Z=2 | [22] | |||||
LiEuPSe4 | orthorhombic | Ama2 | a = 10.5592 b = 10.415 c = 6.4924 Z = 4 | red; air unstable | [88] | ||||
Na8Eu2(Si2Se6)2 | monoclinic | C2/m | a=7.090 b=12.228 c=7.950 β=107.427° Z = 1 | 657.6 | [89] | ||||
KEuPSe4 | monoclinic | P21/m | a = 6.8469 b = 6.9521 c = 9.0436 β = 107.677° Z = 2 | red; air unstable | [88] | ||||
KEuPSe4 | orthorhombic | Pnma | a = 17.516 b = 7.0126 c = 6.9015 Z = 4 | [82] | |||||
K4Eu(PSe4)2 | orthorhombic | Ibam | a = 19.020 b = 9.131 c = 10.198 Z = 4 | [34][90] | |||||
Cs3GdP2Se8 | monoclinic | P21/c | [85] | ||||||
NaSmP2Se6 | 709.94 | triclinic | P1 | a 6.8368 b 7.5312 c 9.557 α 90.799° β 91.910° γ 90.351° Z=2 | red | [45] | |||
Na9Sm(Ge2Se6)2 | monoclinic | C2/m | a = 7.916 b = 12.244 c = 7.105 β = 106.99° Z = 1 | 658.6 | [89] | ||||
KSmP2Se6 | 725.15 | monoclinic | P21 | a=6.7888 b=7.6185 c=10.1962 β=91.508 Z=2 | 527.17 | 4.568 | red | [91] | |
CsSmP2Se6 | orthorhombic | P212121 | a = 6.8867 b = 7.5448 c = 22.152 Z = 4 | [45][86] | |||||
NaGdP2Se6 | 715.94 | triclinic | P1 | a 6.8464 b 7.4916 c 9.5372 α 90.813° β 92.026° γ 90.241° Z=2 | yellow | [45] | |||
KGdP2Se6 | monoclinic | P21 | a=6.7802 b=7.5809 c=10.1967 β=91.638 Z=2 | 523.97 | 4.640 | yellow | [45][91] | ||
Rb2GdP2Se7 | 1037.73 | monoclinic | P21/n | a = 10.137 b = 7.212 c = 20.299 β = 98.23° Z = 4 | 1468.8 | 4.692 | orange; air sensitive | [85] | |
NaTbP2Se6 | 717.61 | triclinic | P1 | a 6.8854 b 7.4580 c 9.5196 α 89.068° β 87.899° γ 89.974° Z=2 | yellow | [45] | |||
KTbP2Se6 | monoclinic | P21 | a=6.7609 b=7.5570 c=10.2158 β=91.732 Z=2 | 521.71 | 4.671 | yellow | [45][91] | ||
KTbP2Se6 | orthorhombic | red over 9.2 GPa | [92] | ||||||
NaDyP2Se6 | 721.19 | triclinic | P1 | a 6.9114 b 7.4258 c 9.5256 α 88.914° β 87.829° γ 89.695° Z=2 | yellow | [45] | |||
CsEr[P2Se6] | monoclinic | P21/c | a = 7.5381 b = 12.8192 c = 12.7647 β = 106.898° Z = 4 | [86] | |||||
AgErP2Se6 | 810.83 | trigonal | P31/c | a=6.578 c=13.410 Z=2 | 502.6 | 5.358 | dark brown | [55] | |
AgTmP2Se6 | 812.50 | trigonal | P31/c | a=6.567 c=13.422 Z=2 | 501.27 | 5.383 | dark brown | [55] | |
K3AuP2Se8 | monoclinic | Cc | a = 7.122 b = 12.527 c = 18.666 β = 96.06° Z = 4 | [93] | |||||
Rb3AuP2Se8 | monoclinic | Cc | [93] | ||||||
Cs3AuP2Se8 | monoclinic | Cc | [93] | ||||||
K2Au2P2Se6 | monoclinic | C2/m | a = 12.289 b = 7.210 c = 8.107 β = 115.13° Z = 2 | black | [93] | ||||
Rb2Au2P2Se6 | monoclinic | C2/m | [93] | ||||||
Rb2Au2P2Se6 | monoclinic | P21/n | a=11.961 b=10.069 c=32.137 β=91.37° Z=12 | 3869 | 4.653 | @-120 °C black | [94] | ||
Hg2P2Se6 | [34][95] | ||||||||
K2HgP2Se6 | monoclinic | P21/c | a=13.031 b=7.308 c=14.167 β=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=17.654 c=7.226 | [24][96] | ||||||
Tl4P2Se6 | trigonal | R3 | a=6.3808 c= 20.014 | melt 963 K | [34][97] | ||||
TlInP2Se6 | triclinic | P1 | a=6.4488 b=7.5420 c=12.166 α=100.72° β=93.63° γ=113.32° | melt 875K | [98][97] | ||||
TlSbP2Se6 | monoclinic | P21 | a = 6.843 b = 7.841 c = 9.985 β = 90.77° Z = 2 | melt 720K; band gap 1.75 eV | [99] | ||||
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 | [34][100][101] | ||
Na1.5Pb0.75PSe4 | cubic | I43d | a=14.3479 Z=16 | band gap 2 eV | [102] | ||||
RbPbPSe4 | red water stable | [90] | |||||||
Rb4Pb(PSe4)2 | orthorhombic | Ibam | a = 19.134 b = 9.369 c = 10.488 Z = 4 | orange water unstable | [90] | ||||
CsPbPSe4 | orthorhombic | Pnma | a = 18.607 b = 7.096 c = 6.612 Z = 4 | red water stable | [90] | ||||
Cs4Pb(PSe4)2 | orange water unstable | [90] | |||||||
Bi4(P2Se6)3 | monoclinic | P21/n | a = 20.869 b = 7.4745 c = 9.5923 β = 91.73° | [69] | |||||
β-Bi4(P2Se6)3 | triclinic | P1 | a = 12.2303 b = 6.7640 c = 17.866 α = 90.493° β = 94.133° γ = 91.163° | black | [103] | ||||
KBiP2Se6 | 783.78 | monoclinic | P21 | a 6.9183 b 7.663 c 10.239 β 91.508° Z=2 | 542.6 | 4.797 | [34][70] | ||
CuBiP2Se6 | R3 | a = 6.553 c = 39.76 | lamellar; p-type semiconductor; work function 5.26 eV | [104][105] | |||||
AgBiP2Se6 | R3 | a = 6.652 c = 39.61 | lamellar | [104] | |||||
Cs5BiP4Se12 | orthorhombic | Pmc21 | a = 7.5357 b = 13.7783 c = 28.0807 Z = 4 | band gap 1.85 eV; melt 590 °C | [106] | ||||
α-TlBiP2Se6 | monoclinic | P2l/c | a =12.539 b =7.499 c =12.248 β =113.731° | chains; band gap 1.23,1eV | [107] | ||||
β-TlBiP2Se6 | monoclinic | P2l/c | a =12.25 b =7.5518 c =22.834 β =97.65° | melt 544 °C; layers; band gap 1.27 eV | [107] | ||||
K2ThP3Se9 | triclinic | P1 | a = 10.4582 b = 16.5384 c = 10.2245 α = 107.637 β = 91.652 γ = 90.343° Z = 2 | [108] | |||||
β-K2ThP3Se9 | monoclinic | P21/n | a = 10.2697 b = 7.7765 c = 20.472 β = 92.877° Z = 4 | yellow | [109] | ||||
Rb2ThP3Se9 | triclinic | P1 | a = 10.5369 b = 16.6914, c = 10.2864 α = 107.614° β = 92.059° γ = 90.409° Z = 2 | [108] | |||||
Rb7Th2P6Se21 | triclinic | P1 | a = 11.531 b = 12.359 c = 16.161 α = 87.289° β = 75.903° γ = 88.041° Z = 2 | red; band gap 2.0 eV | [110] | ||||
Cs4Th4P4Se26 | orthorhombic | Pbca | a = 12.0130 b = 14.5747 c = 27.134 Z = 8 | orange; (P2Se9)6- anion | [111] | ||||
Cs4Th2P5Se17 | monoclinic | P2l/c | a = 10.238 b = 32.182 c = 10.749 β = 95.832° Z = 4 | [108] | |||||
K2UP3Se9 | triclinic | P1 | a = 10.407( b = 16.491 c = 10.143 α= 107.51° β = 91.74° γ = 90.28° Z = 4 | black | [24][112] | ||||
Rb4U2P5Se17 | triclinic | P1 | a =10.0824 b = 10.6905 c = 15.7845 α = 84.678 β = 76.125 γ = 85.874° | @100K | [113] | ||||
Rb4U4P4Se26 | 3470.84 | orthorhombic | Pbca | a=11.9779 b=14.4874 c=27.1377 Z=4 | 4709.17 | 4.895 | U5+ | [114] | |
Cs2U2(P2Se9)(Se2)2 | orthorhombic | Pbca | a 11.769 b 14.389 c 26.537 | black | [115] |