Chemistry:Rubidium germanium iodide
| Identifiers | |
|---|---|
3D model (JSmol)
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| Properties | |
| GeI3Rb | |
| Molar mass | 538.811 g·mol−1 |
| Melting point | 61 °C (decomposes) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Rubidium germanium iodide is a ternary halide of rubidium and germanium, with the chemical formula RbGeI3. It is being considered as a potential counterpart to the toxic CH3NH3PbI3 for photovoltaic applications.[1]
Preparation
Rubidium germanium iodide can be prepared by reacting germanium(II) hydroxide and rubidium iodide in hydroiodic acid:[2]
- Ge(OH)
2 + RbI + 2 HI → GeRbI
3 + 2 H
2O
Properties
Rubidium germanium iodide is polymorphic with various distorted perovskite-like structures, reflecting the influence of the "non-bonding" pair of electrons on the centre of Ge2+.[3]
At room temperature, rubidium germanium iodide has a black, cubic perovskite form; between -29 °C and -52 °C a black rhombohedral form; a bordeaux-red orthrhombic perovskite form between -52 °C and -92 °C; and a lemon-yellow orthorhombic form below -92 °C.[4]
References
- ↑ Deepthi Jayan, K.; Sebastian, Varkey (2021-09-01). "Ab initio DFT determination of structural, mechanical, optoelectronic, thermoelectric and thermodynamic properties of RbGeI3 inorganic perovskite for different exchange-correlation functionals" (in en). Materials Today Communications 28: 102650. doi:10.1016/j.mtcomm.2021.102650. ISSN 2352-4928. https://www.sciencedirect.com/science/article/pii/S2352492821006425.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 377. ISBN 978-0-08-037941-8.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 376. ISBN 978-0-08-037941-8.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 376-377. ISBN 978-0-08-037941-8.
| HI | He | ||||||||||||||||
| LiI | BeI2 | BI3 | CI4 | NI3 | I2O4, I2O5, I4O9 |
IF, IF3, IF5, IF7 |
Ne | ||||||||||
| NaI | MgI2 | AlI3 | SiI4 | PI3, P2I4 |
S | ICl, ICl3 |
Ar | ||||||||||
| KI | CaI2 | Sc | TiI4 | VI3 | CrI3 | MnI2 | FeI2 | CoI2 | NiI2 | CuI | ZnI2 | Ga2I6 | GeI2, GeI4 |
AsI3 | Se | IBr | Kr |
| RbI | SrI2 | YI3 | ZrI4 | NbI5 | Mo | Tc | Ru | Rh | Pd | AgI | CdI2 | InI3 | SnI4, SnI2 |
SbI3 | TeI4 | I | Xe |
| CsI | BaI2 | HfI4 | TaI5 | W | Re | Os | Ir | Pt | AuI | Hg2I2, HgI2 |
TlI | PbI2 | BiI3 | Po | AtI | Rn | |
| Fr | RaI2 | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |
| ↓ | |||||||||||||||||
| La | Ce | Pr | Nd | Pm | SmI2 | Eu | Gd | TbI3 | Dy | Ho | Er | Tm | Yb | Lu | |||
| Ac | ThI4 | Pa | UI3, UI4 |
Np | Pu | Am | Cm | Bk | Cf | EsI3 | Fm | Md | No | Lr | |||
 |  |
