- Source: Silicon tetraiodide
Silicon tetraiodide is the chemical compound with the formula SiI4. It is a tetrahedral molecule with Si-I bond lengths of 2.432(5) Å.
SiI4 is a precursor to silicon amides of the formula Si(NR2)4 (R = alkyl). It has also been of interest in the manufacture and etching of silicon in microelectronics.
Synthesis and reactions
This compound is produced by treating silicon-copper mixture with iodine:
Si + I2 → SiI4
It reacts quickly with water and moisture in the air.
It can also be made on a large scale by reaction of silicon or silicon carbide with iodine on heating to about 200 °C. Of more academic interest is the reaction of silane with iodine vapour at 130 - 150 °C, as this produces a series of compounds ranging from iodosilane SiH3I to diiodosilane SiH2I2 and triiodosilane SiHI3 as well. These compounds are colourless liquids at room temperature. The last one can be readily distinguished from the similar carbon compound, iodoform which is a yellow solid at room temperature.
Comparison with other SiX4 compounds
References
External links
webelements page
Kata Kunci Pencarian:
- Silikon tetrafluorida
- Kamus rumus kimia
- Silicon tetraiodide
- Tetraiodide
- Silicon tetrachloride
- Tetramethylsilane
- Carbon tetraiodide
- Silicon tetrafluoride
- Titanium tetraiodide
- Tin(IV) iodide
- List of inorganic compounds
- Germanium(IV) iodide
