Names | |
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Other names
Ferrous selenate
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Identifiers | |
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3D model (
JSmol)
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|
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Properties | |
FeSeO4 | |
Molar mass | 198.8046 g/mol (anhydrous) 288.881 g/mol (pentahydrate) 324.91156 g/mol (heptahydrate) |
Appearance | green, unstable crystalline solid (heptahydrate) |
soluble | |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Iron(II) selenate (ferrous selenate) is an inorganic compound with the formula FeSeO4. It has anhydrous and several hydrate forms. The pentahydrate has the structure, [Fe(H2O)4]SeO4•H2O, isomorphous to the corresponding iron(II) sulfate. [2] Heptahydrate is also known, in form of unstable green crystalline solid. [3]
Iron(II) selenate can be prepared by the reaction of saturated sodium selenate and iron(II) sulfate at 80 °C. When cooled to room temperature, crystalline iron(II) selenate precipitates from the solution. [4]
The reaction of iron and selenic acid produces iron(II) selenate as well, but with a side product: [3]
Double salts like the Tutton's salts (NH4)2Fe(SeO4)2•6H2O and K2Fe(SeO4)2•6H2O are known. [3]
In addition to the ferrous (Fe2+) salt, the ferric (Fe3+) salt iron(III) selenate, Fe2(SeO4)3, has also been reported. [5]
However, iron(II) selenite (FeSeO3) is unknown, though the selenite and pyroselenite of iron(III) was published. [6]
Names | |
---|---|
Other names
Ferrous selenate
| |
Identifiers | |
| |
3D model (
JSmol)
|
|
| |
| |
Properties | |
FeSeO4 | |
Molar mass | 198.8046 g/mol (anhydrous) 288.881 g/mol (pentahydrate) 324.91156 g/mol (heptahydrate) |
Appearance | green, unstable crystalline solid (heptahydrate) |
soluble | |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Iron(II) selenate (ferrous selenate) is an inorganic compound with the formula FeSeO4. It has anhydrous and several hydrate forms. The pentahydrate has the structure, [Fe(H2O)4]SeO4•H2O, isomorphous to the corresponding iron(II) sulfate. [2] Heptahydrate is also known, in form of unstable green crystalline solid. [3]
Iron(II) selenate can be prepared by the reaction of saturated sodium selenate and iron(II) sulfate at 80 °C. When cooled to room temperature, crystalline iron(II) selenate precipitates from the solution. [4]
The reaction of iron and selenic acid produces iron(II) selenate as well, but with a side product: [3]
Double salts like the Tutton's salts (NH4)2Fe(SeO4)2•6H2O and K2Fe(SeO4)2•6H2O are known. [3]
In addition to the ferrous (Fe2+) salt, the ferric (Fe3+) salt iron(III) selenate, Fe2(SeO4)3, has also been reported. [5]
However, iron(II) selenite (FeSeO3) is unknown, though the selenite and pyroselenite of iron(III) was published. [6]