• Source: Rubidium germanium iodide

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.




Preparation


Rubidium germanium iodide can be prepared by reacting germanium(II) hydroxide and rubidium iodide in hydroiodic acid:

Ge(OH)2 + RbI + 2 HI → GeRbI3 + 2 H2O




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+.
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.




References

Kata Kunci Pencarian:

• Arsen
• Uranium
• Bilangan oksidasi
• Fosforus
• Vanadium
• Iodin
• Talium
• Iterbium
• Erbium
• Kamus rumus kimia
• Rubidium germanium iodide
• Rubidium
• Iodine
• Caesium iodide
• List of inorganic compounds
• Caesium
• Period 5 element
• Alkali metal
• Superatom
• List of CAS numbers by chemical compound