Chemistry:Iron(III) selenite
From HandWiki
_selenite_heptahydrate.%E1%83%95%E1%83%99.jpg)
| |
| Identifiers | |
|---|---|
| |
3D model (JSmol)
|
|
| |
| |
| Properties | |
| Fe2(SeO3)3 | |
| Structure | |
| R3c (No.161) (trihydrate)[1] | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Iron(III) selenite is an inorganic compound with the chemical formula Fe2(SeO3)3. It exists anhydrous form and as various hydrates. The heptahydrate is produced by the reaction of ferric chloride and selenous acid (or sodium selenite) at a pH of 1.05.[2] The pentahydrate has the structure of Fe2(OH)3(H2O)2(HSeO3)3.[3] The single crystal diffraction of the trihydrate shows that its structure consists of two independent FeO6 octahedrons and SeO32− with a tetrahedral geometry.[4]
The anhydrous salt decomposes into Fe2O3·2SeO2 at 534 °C, generates 4Fe2O3·SeO2 at 608 °C, and finally obtains Fe2O3 at 649 °C.[5]
References
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedgiester - ↑ Pinaev, G. F.; Volkova, V. P. Preparation and some properties of iron(III) selenite. Obshchaya i Prikladnaya Khimiya, 1970. 3: 33-39. ISSN: 0369-7045.
- ↑ Maldagalieva, R. A.; Shokanov, A. K. Infrared spectroscopic study of the state of water molecules in crystal hydrates of transition metal selenites. Trudy Khimiko-Metallurgicheskogo Instituta, Akademiya Nauk Kazakhskoi SSR, 1973. 22: 16-20. ISSN: 0516-0324.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedAitor - ↑ Bakeeva, S. S.; Muldagalieva, R. A.; Buketov, E. A.; Pashinkin, A. S. Thermal stability of neutral iron selenite. Trudy Khimiko-Metallurgicheskogo Instituta, Akademiya Nauk Kazakhskoi SSR, 1970. 15: 88-92. ISSN: 0516-0324.
 |  |
