Phosphide iodides oriodide phosphides are compounds containinganions composed ofiodide (I−) andphosphide (P3−). They can be considered asmixed anion compounds. They are in the category ofpnictidehalides. Related compounds include thephosphide chlorides,arsenide iodidesantimonide iodides andphosphide bromides.
Phosphorus can form clusters or chains in these compounds, so that some are 1-dimensional or fibrous.
Phosphide iodides are often metallic, black or dark red in colour.
| formula | system | space group | unit cell Å | volume | density | comment | ref |
|---|---|---|---|---|---|---|---|
| [Si40P6]I6.5 | cubic | Pm3n | a=10.1293 Z=1 | 1039.3 | 3.412 | clathrate | [1] |
| K4P21I | orthorhombic | Ccmm | a = 12.853;b = 21.795;c = 9.748 Z = 4 | 2730.7 | 2.271 | ruby red;sensitive to air | [2] |
| Ca2PI | trigonal | R3m | a=4.30 c=22.17 | 3.2 | yellow | [3] | |
| Ca3PI3 | cubic | I4132 | a=12.31 Z=8 | 3.78 | colourless | [3] | |
| Cu2P3I2 | monoclinic | P21c | a = 15.343,b = 12.925,c = 15.260, β = 116.38°,Z = 16 | band gap 0.72 eV; Cu ion conductor | [4][5][6] | ||
| Cu3P15I2 | monoclinic | P21/n | a=9.667, b=19.475, c=9.886, β =108.75(2)°, Z=4 | 1762.4 | grey | [5][7] | |
| (CuI)3P12 | monoclinic | P21 | a=12.846 b=13.857 c=9.651β=109.43 Z=4 | 1620.2 | 3.866 | shiny | [5] |
| (CuI)2P14 | monoclinic | P21/c | a = 9.919, b = 9.718, c = 16.478, β = 105.71°, Z = 4 | 1529.0 | 3.539 | [8] | |
| (CuI)5P16S | [9] | ||||||
| (CuI)3P4S4 | hexagonal | P63cm | a=19.082,c=6.691Z=6 | 2109.9 | [10] | ||
| (CuI)8P12 | monoclinic | P121/c1 | a=15.343, b=12.925, c=15.26, β=116.38 | 4.64 | [11] | ||
| Ge38P8I8 | Cubic | P43n | a=10.507 | silvery | [12] | ||
| (CuI)5P16Se | [9] | ||||||
| (CuI)2P8Se3 | Pbcm | a=9.1348 b=12.351 c=13.873 Z=4 | 1565.2 | 3.673 | red; melt 408 °C; P8Se3 clusters | [13] | |
| (CuI)3P4Se4 | hexagonal | P63cm | a = 19.601,c = 6.7196,Z = 6 | orange | [14] | ||
| Zn3PI3 | cubic | F42m | a=5.945 | 4.87 | dark grey; dec 300 °C | [15] | |
| (ZnI2)6ZnSP4S3 | [11] | ||||||
| (ZnI2)6ZnSeP4Se3 | cubic | F43c | a=19.542 | 7463.1 | 4.325 | brown | [11] |
| Rb4P21I | orthorhombic | Ccmm | a = 13.281;b = 21.868;c = 9.771 Z=4 | 2838.1 | 2.619 | dark red | [2] |
| Sr2P7I | cubic | P213 | a=10.25 | dark red; contains heptaphosphanortricyclane | [16] | ||
| Zr6I14P | orthorhombic | Cmca | [17] | ||||
| Ag2P3I2 | monoclinic | Ag ion conductor | [4] | ||||
| (AgI)2Ag3PS4 | hexagonal | P63mc | a=7.395 c=12.224 Z=2 | 579.1 | Ag ion conductor | [18] | |
| Cd2P3I | monoclinic | C2/c | a=8.255 b=9.304 c=7.514β =99.66 | [19] | |||
| Cd3PI3 | hexagonal | P63mc | band gap 2.44 eV | [20] | |||
| Cd4P2I3 | orthorhombic | Pbca | a=12.890 b=12.725 c=12.654 | P24− | [19] | ||
| SnIP | soft and flexible; double helix SnI+ and P−; band gap 1.9 eV | [21][22] | |||||
| Sn24P19.3I8 | cubic | Pm3n | a=10.9554 | [23] | |||
| Sn24P19.3BrxI8−x | cubic | Pm3n | [24] | ||||
| Sn24P19.3(2)ClyI8−y (y ≤ 0.8) | cubic | Pm3n | [24] | ||||
| Sn20Zn4P20.8I8 | cubic | Pm3n | a=10.883 Z=1 | [25] | |||
| Sn17Zn7P22I8 | cubic | Pm3n | a=10.8458 Z=1 | [25] | |||
| Sn14In10P22I8 | cubic | Pm3n | a=11.0450 Z=1 | 1347.4 | 5.535 | black | [26] |
| Sn14In10P21.2I8 | P42/m | a=24.745,c=11.067,Z=5 | 6776 | 5.521 | black | [26] | |
| [Ge30.5Sn7.7P7.75]I7.88 | cubic | Pm3n | a=10.721 Z=1 | [27] | |||
| Sn24AsxP19.3−xI8 | cubic | Pm3n | a = 10.9358—11.1495 | [28] | |||
| Cs0.35Zr6I14P | orthorhombic | Cmca | a=15.934 b=14.287 c=12.939 Z=4 | black | [17] | ||
| Ba2P7I | monoclinic | P21/m | a=6.3538 b=6.8990 c=12.0392β =95.515 Z=2 | 524.93 | 3.912 | orange-yellow; water sensitive | [29] |
| Ba3P3I2 | orthorhombic | Pnma | a = 17.195,b = 4.624,c = 14.272,Z = 4, | [30] | |||
| Ba5P5I3 | monoclinic | C2/m | a = 42.664,b = 4.56.3,c = 9.431,β = 92.20,Z = 4 | [30] | |||
| La2PI2 | trigonal | P3m1 | a=4.236 c=10.121 Z=1 | 157.25 | 4.95 | [31] | |
| Eu2PI | R3m | a = 4.445,c = 23.12.6,Z = 3 | [32] | ||||
| Eu2P7I | cubic | P213 | dark red; contains heptaphosphanortricyclane; band gap 1.7 eV | [16] | |||
| Au7P10I | trigonal | P31m | a=6.180 c=11.122 Z=1 | [33] | |||
| Hg9P5I6 | monoclinic | a=13.112 b=12.486 c=17.031β=119.90 | [34] | ||||
| Hg4ZnPI4 | monoclinic | P21 | a = 7.850, b = 12.719, c = 7.861, β = 119.52°, Z = 2 | like Millon phases | [35] | ||
| Hg7Ag2P8I6 | monoclinic | C12/m1 | a=13.146 b=11.037 c=8.336β=102.210 Z=2 | 1182.1 | 7.386 | black | [36] |
| Hg12Ag41P88I41 | cubic | Fm3 | a=26.705 Z=4 | 19045 | 5.147 | dark red; air stable; P113− clusters | [37] |
| HgAg6P20I2 | monoclinic | P21/m | a = 6.718,b = 27.701,c = 7.383,β = 113.98°,Z = 2 | [38] |