Identifiers | |
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3D model (
JSmol)
|
|
PubChem
CID
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| |
| |
Properties | |
F5Pa | |
Molar mass | 326.02790 g·mol−1 |
Appearance | white solid [1] |
Soluble in water and hydrofluoric acid [1] | |
Related compounds | |
Other
anions
|
protactinium(V) chloride protactinium(V) bromide protactinium(V) iodide |
Other
cations
|
uranium(V) fluoride |
Related compounds
|
protactinium(IV) fluoride |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Protactinium(V) fluoride is a fluoride of protactinium with the chemical formula PaF5.
Protactinium(V) fluoride can be obtained by reacting protactinium(V) oxide with bromine trifluoride or bromine pentafluoride at 600 °C: [1]
It can also be obtained by reacting protactinium(V) chloride or protactinium(IV) fluoride with fluorine gas at 700 °C: [1]
The hydrate form of protactinium(V) fluoride can be formed by the reaction of protactinium(V) oxide and hydrofluoric acid in an aqueous solution: [1]
It can also be decomposed from fluorine-containing protactinium complexes. [2]
Protactinium(V) fluoride is a white, volatile, extremely hygroscopic solid that is partially soluble in water and soluble in hydrofluoric acid. It has a tetragonal crystal structure of the β- uranium pentafluoride type with the space group I42d (space group no. 122) with the lattice parameters a = 1153 pm, c = 510 pm. Quartz and Pyrex are attacked by the compound at higher temperatures. As a dihydrate, it is a colourless, hygroscopic, crystalline solid that is waxy in nature. It is soluble in water and hydrofluoric acid. [1] It reacts with phosphorus trifluoride to form protactinium(IV) fluoride. [3] The dihydrate cannot be converted into the anhydrous form in air, hydrogen fluoride or fluorine at low temperatures. Instead, diprotactinium(V) oxide octafluoride (Pa2OF8) is formed. At higher temperatures around 325 °C, a mixture of the diprotactinium(V) oxide octafluoride and protactinium(V) fluoride is formed. [2]
Identifiers | |
---|---|
3D model (
JSmol)
|
|
PubChem
CID
|
|
| |
| |
Properties | |
F5Pa | |
Molar mass | 326.02790 g·mol−1 |
Appearance | white solid [1] |
Soluble in water and hydrofluoric acid [1] | |
Related compounds | |
Other
anions
|
protactinium(V) chloride protactinium(V) bromide protactinium(V) iodide |
Other
cations
|
uranium(V) fluoride |
Related compounds
|
protactinium(IV) fluoride |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Protactinium(V) fluoride is a fluoride of protactinium with the chemical formula PaF5.
Protactinium(V) fluoride can be obtained by reacting protactinium(V) oxide with bromine trifluoride or bromine pentafluoride at 600 °C: [1]
It can also be obtained by reacting protactinium(V) chloride or protactinium(IV) fluoride with fluorine gas at 700 °C: [1]
The hydrate form of protactinium(V) fluoride can be formed by the reaction of protactinium(V) oxide and hydrofluoric acid in an aqueous solution: [1]
It can also be decomposed from fluorine-containing protactinium complexes. [2]
Protactinium(V) fluoride is a white, volatile, extremely hygroscopic solid that is partially soluble in water and soluble in hydrofluoric acid. It has a tetragonal crystal structure of the β- uranium pentafluoride type with the space group I42d (space group no. 122) with the lattice parameters a = 1153 pm, c = 510 pm. Quartz and Pyrex are attacked by the compound at higher temperatures. As a dihydrate, it is a colourless, hygroscopic, crystalline solid that is waxy in nature. It is soluble in water and hydrofluoric acid. [1] It reacts with phosphorus trifluoride to form protactinium(IV) fluoride. [3] The dihydrate cannot be converted into the anhydrous form in air, hydrogen fluoride or fluorine at low temperatures. Instead, diprotactinium(V) oxide octafluoride (Pa2OF8) is formed. At higher temperatures around 325 °C, a mixture of the diprotactinium(V) oxide octafluoride and protactinium(V) fluoride is formed. [2]