Nickel(II) selenate

Nickel(II) selenate
Identifiers
CAS Number	15060-62-5 anhydrous ; 10101-99-2 hexahydrate ;
3D model (JSmol)	Interactive image;
ChemSpider	13704804;
ECHA InfoCard	100.035.554
EC Number	239-125-2;
PubChem CID	18690621;
CompTox Dashboard (EPA)	DTXSID10934009 ;
	InChI InChI=1S/Ni.H2O4Se/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: WCSBABHZOSWARI-UHFFFAOYSA-L;
	SMILES [Ni+2].[O-][Se](=O)(=O)[O-];
Properties
Chemical formula	NiSeO4
Molar mass	201.64
Appearance	green solid
Density	4.8 g·cm−3; 2.314 g·cm−3 (hexahydrate)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H317, H334, H341, H350i, H360D, H372, H410
Precautionary statements	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	nickel(II) sulfate
Other cations	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). Infobox references

Nickel(II) selenate is a selenate of nickel with the chemical formula NiSeO₄.

Preparation

Nickel(II) selenate can be produced by the reaction of nickel(II) carbonate and selenic acid.^[5]

\mathrm {NiCO_{3}\ +H_{2}SeO_{4}\rightarrow NiSeO_{4}+H_{2}O+CO_{2}\uparrow }

Properties

Nickel(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 oxide and selenium dioxide.^[7]^[2]

\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}

It and potassium selenate are cooled and crystallized in hot aqueous solution to obtain the blue-green [Ni(H₂O)₆](SeO₄)₂.^[8]

\mathrm {K_{2}SeO_{4}\ +NiSeO_{4}+6H_{2}O\rightarrow K_{2}[Ni(H_{2}O)_{6}](SeO_{4})_{2}}

References

^ ^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.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[GESTIS-1] Record of Nickelselenat in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 2019-12-30.

[R._J._Meyer-2] 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-3] 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)

[4] "Nickel selenate". pubchem.ncbi.nlm.nih.gov.

[Jane_E._Macintyre-5] Macintyre, Jane Elizabeth, ed. (1997). Dictionary of inorganic compounds. Vol. 9: Suppl. 4. Vol. 9. London: Chapman & Hall. ISBN 978-0-412-75020-5.

[6] 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.

[7] 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.

[8] 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.{{cite journal}}: CS1 maint: multiple names: authors list (link)

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v t e Nickel compounds
Nickel(0)	Ni(CO)₄ Ni(COD)₂
Nickel(II)	NiF₂ K₂NiF₄ NiF²⁻ ₄ NiCl₂ NiCl²⁻ ₄ NiBr₂ NiBr²⁻ ₄ NiI₂ NiI²⁻ ₄ Ni(CN)₂ K₂Ni(CN)₄ Ni(SCN)₂ NiO Ni(OH)₂ NiCO₃ NiSO₄ Ni₃(PO₄)₂ NiCrO₄ NiTiO₃ NiSeO₄ NiS NiSe Ni(ClO₄)₂ Ni(NO₃)₂ Ni(NO₂)₂ Ni(NO₂)³⁻ ₅ / Ni(NO₂)⁴⁻ ₆ C ₂₄H ₄₆NiO ₄ C ₃₆H ₇₀NiO ₄ Ni(acac)₂
Nickel(III)	NiF₃ Ni₂O₃ NiOOH
Nickel(IV)	NiF₄ K₂NiF₆ MNiO_$x$

Identifiers

CAS Number	15060-62-5 anhydrous^Y 10101-99-2 hexahydrate^Y
3D model (JSmol)	Interactive image
ChemSpider	13704804
ECHA InfoCard	100.035.554
EC Number	239-125-2
PubChem CID	18690621
CompTox Dashboard (EPA)	DTXSID10934009
InChI InChI=1S/Ni.H2O4Se/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: WCSBABHZOSWARI-UHFFFAOYSA-L
SMILES [Ni+2].[O-][Se](=O)(=O)[O-]
Properties
Chemical formula	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]
Pictograms
Signal word	Danger
Hazard statements	H317, H334, H341, H350i, H360D, H372, H410
Precautionary statements	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	nickel(II) sulfate
Other cations	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). Infobox references

Nickel(II) selenate

Preparation

Properties

References

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