Technetium(V) fluoride
Chemical compound
From Wikipedia, the free encyclopedia
Technetium pentafluoride is a binary inorganic chemical compound of technetium metal and fluorine with the chemical formula TcF
5.[1][2][3][4]
| Names | |
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| Other names
Technetium(V) fluoride | |
| Identifiers | |
3D model (JSmol) |
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PubChem CID |
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| Properties | |
| F5Tc | |
| Molar mass | 193 g·mol−1 |
| Appearance | yellow crystals |
| Melting point | 50 °C (122 °F; 323 K) |
| reacts with water | |
| Structure | |
| orthorhombic | |
| Related compounds | |
Related compounds |
Rhenium pentafluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
The compound can be synthesised by heating of technetium powder in a jet of fluorine diluted with nitrogen:
- 2Tc + 5F2 → 2TcF5
Another way to prepare it is the effect of iodine on technetium hexafluoride solution in iodine pentafluoride:[5]
- 2TcF6 + I2 → 2TcF5 + 2IF
Physical properties
Technetium pentafluoride forms yellow crystals[6] of the orthorhombic crystal system.[7] It reacts with water, and is volatile.
Chemical properties
The compound is hydrolyzed by water, disproportionating to more stable technetium compounds:
- 3TcF5 + 8H2O → HTcO4 + 2TcO2 + 15HF