Iron(II) selenate

Iron(II) selenate
Names
	Other names Ferrous selenate
Identifiers
CAS Number	(anhydrous): 15857-43-9; (pentahydrate): 70807-08-8;
3D model (JSmol)	(anhydrous): Interactive image; (pentahydrate): Interactive image;
	InChI (anhydrous): InChI=1S/Fe.H2O4Se/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2 Key: NCHUFZYUFAWBQI-UHFFFAOYSA-L; (pentahydrate): InChI=1S/Fe.H2O4Se.5H2O/c;1-5(2,3)4;;;;;/h;(H2,1,2,3,4);5*1H2/q+2;;;;;;/p-2 Key: YXLBLVIIVLRXHU-UHFFFAOYSA-L;
	SMILES (anhydrous): [O-][Se](=O)(=O)[O-].[Fe+2]; (pentahydrate): [O-][Se](=O)(=O)[O-].[Fe+2].O.O.O.O.O;
Properties
Chemical formula	FeSeO4
Molar mass	198.8046 g/mol (anhydrous); 288.881 g/mol (pentahydrate); 324.91156 g/mol (heptahydrate)
Appearance	green, unstable crystalline solid (heptahydrate)
Solubility in water	soluble
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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]

^ CAS No. from SciFinder
^ K. Heinzinger, G. Pálinkás, Hubertus Kleeberg. Interactions of Water in Ionic and Nonionic Hydrates: Proceedings of a Symposium in honour of the 65th birthday of W.A.P. Luck Marburg/FRG, 2.–3.4. 1987. Springer-Verlag Berlin Heidelberg, 1987
^ Cite error: The named reference Tutton was invoked but never defined (see the help page).

[1] CAS No. from SciFinder

[2] K. Heinzinger, G. Pálinkás, Hubertus Kleeberg. Interactions of Water in Ionic and Nonionic Hydrates: Proceedings of a Symposium in honour of the 65th birthday of W.A.P. Luck Marburg/FRG, 2.–3.4. 1987. Springer-Verlag Berlin Heidelberg, 1987

[Tutton-3] Cite error: The named reference Tutton was invoked but never defined (see the help page).

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Iron(II) selenate

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