Rhodium(III) fluoride or rhodium trifluoride is the
inorganic compound
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bondsthat is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''.
Inorgan ...
with the formula RhF
3. It is a red-brown, diamagnetic solid.
Synthesis and structure
The compound is prepared by
fluorination
In chemistry, halogenation is a chemical reaction which introduces one or more halogens into a chemical compound. Halide-containing compounds are pervasive, making this type of transformation important, e.g. in the production of polymers, drugs. ...
of
rhodium trichloride
Rhodium is a chemical element; it has symbol Rh and atomic number 45. It is a very rare, silvery-white, hard, corrosion-resistant transition metal. It is a noble metal and a member of the platinum group. It has only one naturally occurring isoto ...
:
:
It can also be obtained by direct combination of the elements:
:
Anhydrous is insoluble in water and does not react with it, but the hydrates and can be prepared by adding
hydrofluoric acid
Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colorless, acidic and highly corrosive. A common concentration is 49% (48–52%) but there are also stronger solutions (e.g. 70%) and pure HF has a boiling p ...
to aqueous rhodium(III) solutions.
According to
X-ray crystallography
X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to Diffraction, diffract in specific directions. By measuring th ...
, the compound adopts the same structure as
vanadium trifluoride, wherein the metal achieves octahedral coordination geometry.
References
{{fluorine compounds
Fluorides
Platinum group halides
Rhodium(III) compounds