Nickel(II) selenate is a selenate of nickel with the chemical formula NiSeO4.
 
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.035.554 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| NiSeO4 | |
| Molar mass | 201.64 |
| Appearance | green solid[1] |
| Density | 4.8 g·cm−3[2] 2.314 g·cm−3 (hexahydrate)[3] |
| Hazards | |
| GHS labelling:[4] | |
 
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| H317, H334, H341, H350i, H360D, H372, H410 | |
| P203, P233, P260, P261, P264, P270, P271, P272, P273, P280, P284, P302+P352, P304+P340, P318, P319, P321, P333+P317, P342+P316, P362+P364, P391, P403, P405, P501 | |
| Related compounds | |
Other anions
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nickel(II) sulfate |
Other cations
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iron(II) selenate cobalt(II) selenate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
editNickel(II) selenate can be produced by the reaction of nickel(II) carbonate and selenic acid.[5]
Properties
editNickel(II) selenate hexahydrate is a green solid.[1] It is tetragonal, space group P41212 (No. 92).[6] At 100 °C, nickel(II) selenate hexahydrate slowly loses water to the tetrahydrate, with space group P21/n (No. 14). At 510 °C, nickel(II) selenate decomposes directly into nickel selenite, which on further heating decomposes into nickel(II) oxide and selenium dioxide.[7][2]
![{\displaystyle \mathrm {NiSeO_{4}\cdot 6H_{2}O\ {\xrightarrow[{-H_{2}O}]{100\,^{\circ }C}}\ NiSeO_{4}\cdot 4H_{2}O\ {\xrightarrow[{-H_{2}O}]{300\,^{\circ }C}}\ NiSeO_{4}\cdot H_{2}O\ {\xrightarrow[{-H_{2}O}]{390\,^{\circ }C}}\ NiSeO_{4}\ {\xrightarrow[{-O_{2}}]{510\,^{\circ }C}}\ NiSeO_{3}\ {\xrightarrow[{-SeO_{2}}]{690\,^{\circ }C}}\ NiO} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/4843a32541acbe56eb0f3968004c9a2a5ab74627)
It and potassium selenate are cooled and crystallized in hot aqueous solution to obtain the blue-green [Ni(H2O)6](SeO4)2.[8]
_{2}} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/be3bdfe8bf1b42fa6a72f7973b3ca988ef509b9f)
References
edit- ^ a b Record of Nickelselenat in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 2019-12-30.
- ^ a b R. J. Meyer (2013), [[1] at Google Books Nickel Teil B — Lieferung 2. Verbindungen bis Nickel-Polonium], Springer-Verlag, ISBN 978-3-662-13302-6
{{citation}}: Check|url=value (help) - ^ William M. Haynes (2016), [[2], p. 78, at Google Books CRC Handbook of Chemistry and Physics, 94th Edition], CRC Press, p. 78, ISBN 978-1-4665-7115-0
{{citation}}: Check|url=value (help) - ^ "Nickel selenate". pubchem.ncbi.nlm.nih.gov.
- ^ Macintyre, Jane Elizabeth, ed. (1997). Dictionary of inorganic compounds. Vol. 9: Suppl. 4. Vol. 9. London: Chapman & Hall. ISBN 978-0-412-75020-5.
- ^ Fuess, H. (Dec 1970). "Die Kristallstruktur von Nickelselenat‐hexahydrat". Zeitschrift für anorganische und allgemeine Chemie. 379 (2): 204–212. doi:10.1002/zaac.19703790212. ISSN 0044-2313.
- ^ Stoilova, D.; Koleva, V. (Jan 1997). "TG, DTA, DSC and X-ray powder diffraction studies on some nickel selenate hydrates". Thermochimica Acta. 290 (1): 85–91. doi:10.1016/S0040-6031(96)03062-6.
- ^ Harald Euler, Bruno Barbier, Alke Meents, Armin Kirfel (September 2009). "Crystal structure of Tutton's salts K2[MII(H2O)6](SeO4)2, MII = Co, Ni, Zn and refinement of the crystal structure of potassium hexaaquamagnesium( II) selenate, K2[Mg(H2O)6](SeO4)2". Zeitschrift für Kristallographie - New Crystal Structures. 224 (3): 351–354. doi:10.1524/ncrs.2009.0156. ISSN 2197-4578. S2CID 201059907. Archived from the original on 2021-08-15. Retrieved 2021-05-28.
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