Rhodium(III) fluoride or rhodium trifluoride is the inorganic compound with the formula RhF3. It is a red-brown, diamagnetic solid.
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IUPAC name
Rhodium(III) fluoride
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Other names
Rhodium trifluoride
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Identifiers | |
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CompTox Dashboard (EPA)
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Properties | |
RhF3 | |
Molar mass | 159.90070 g·mol−1 |
Appearance | red-brown solid |
Density | 5.38 g/cm3[1] |
Structure | |
Trigonal | |
R3c | |
a = 4.873, c = 13.550[2]
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Formula units (Z)
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6 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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The compound is prepared by fluorination of rhodium trichloride:
It can also be obtained by direct combination of the elements:[3]
Anhydrous RhF3 is insoluble in water and does not react with it, but the hydrates RhF3·6H2O and RhF3·9H2O can be prepared by adding hydrofluoric acid to aqueous rhodium(III) solutions.[3]
According to X-ray crystallography, the compound adopts the same structure as vanadium trifluoride, wherein the metal achieves octahedral coordination geometry.[2]