Nickel(II) selenate

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Nickel(II) selenate
Ni2+.svg Selenate Structural Formula A V2.svg
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.554 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 239-125-2
PubChem CID
  • InChI=1S/Ni.H2O4Se/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
    Key: WCSBABHZOSWARI-UHFFFAOYSA-L
  • [Ni+2].[O-][Se](=O)(=O)[O-]
Properties
NiSeO4
Molar mass 201.64
Appearancegreen solid [1]
Density 4.8 g·cm−3 [2]
2.314 g·cm−3 (hexahydrate) [3]
Hazards
GHS labelling: [4]
GHS-pictogram-silhouette.svg GHS-pictogram-pollu.svg
Danger
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
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).

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

Contents

Preparation

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

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(II) oxide and selenium dioxide. [7] [2]

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

Related Research Articles

In chemistry, water(s) of crystallization or water(s) of hydration are water molecules that are present inside crystals. Water is often incorporated in the formation of crystals from aqueous solutions. In some contexts, water of crystallization is the total mass of water in a substance at a given temperature and is mostly present in a definite (stoichiometric) ratio. Classically, "water of crystallization" refers to water that is found in the crystalline framework of a metal complex or a salt, which is not directly bonded to the metal cation.

<span class="mw-page-title-main">Nickel(II) chloride</span> Chemical compound

Nickel(II) chloride (or just nickel chloride) is the chemical compound NiCl2. The anhydrous salt is yellow, but the more familiar hydrate NiCl2·6H2O is green. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis. The nickel chlorides are deliquescent, absorbing moisture from the air to form a solution. Nickel salts have been shown to be carcinogenic to the lungs and nasal passages in cases of long-term inhalation exposure.

Selenic acid is the inorganic compound with the formula H2SeO4. It is an oxoacid of selenium, and its structure is more accurately described as O2Se(OH)2. It is a colorless compound. Although it has few uses, one of its salts, sodium selenate is used in the production of glass and animal feeds.

<span class="mw-page-title-main">Tellurate</span> Compound containing an oxyanion of tellurium

In chemistry, tellurate is a compound containing an oxyanion of tellurium where tellurium has an oxidation number of +6. In the naming of inorganic compounds it is a suffix that indicates a polyatomic anion with a central tellurium atom.

<span class="mw-page-title-main">Nickel(II) carbonate</span> Chemical compound

Nickel(II) carbonate describes one or a mixture of inorganic compounds containing nickel and carbonate. From the industrial perspective, an important nickel carbonate is basic nickel carbonate with the formula Ni4CO3(OH)6(H2O)4. Simpler carbonates, ones more likely encountered in the laboratory, are NiCO3 and its hexahydrate. All are paramagnetic green solids containing Ni2+ cations. The basic carbonate is an intermediate in the hydrometallurgical purification of nickel from its ores and is used in electroplating of nickel.

<span class="mw-page-title-main">Nickel(II) sulfate</span> Chemical compound

Nickel(II) sulfate, or just nickel sulfate, usually refers to the inorganic compound with the formula NiSO4(H2O)6. This highly soluble turquoise coloured salt is a common source of the Ni2+ ion for electroplating. Approximately 40,000 tonnes were produced in 2005.

Tutton's salts are a family of salts with the formula M2M'(SO4)2(H2O)6 (sulfates) or M2M'(SeO4)2(H2O)6 (selenates). These materials are double salts, which means that they contain two different cations, M+ and M'2+ crystallized in the same regular ionic lattice. The univalent cation can be potassium, rubidium, caesium, ammonium (NH4), deuterated ammonium (ND4) or thallium. Sodium or lithium ions are too small. The divalent cation can be magnesium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc or cadmium. In addition to sulfate and selenate, the divalent anion can be chromate (CrO42−), tetrafluoroberyllate (BeF42−), hydrogenphosphate (HPO42−) or monofluorophosphate (PO3F2−). Tutton's salts crystallize in the monoclinic space group P21/a. The robustness is the result of the complementary hydrogen-bonding between the tetrahedral anions and cations as well their interactions with the metal aquo complex [M(H2O)6]2+.

<span class="mw-page-title-main">Nickel(II) bromide</span> Chemical compound

Nickel(II) bromide is the name for the inorganic compounds with the chemical formula NiBr2(H2O)x. The value of x can be 0 for the anhydrous material, as well as 2, 3, or 6 for the three known hydrate forms. The anhydrous material is a yellow-brown solid which dissolves in water to give blue-green hexahydrate (see picture).

This list gives an overview of the classification of non-silicate minerals and includes mostly International Mineralogical Association (IMA) recognized minerals and its groupings. This list complements the List of minerals recognized by the International Mineralogical Association series of articles and List of minerals. Rocks, ores, mineral mixtures, not IMA approved minerals, not named minerals are mostly excluded. Mostly major groups only, or groupings used by New Dana Classification and Mindat.

Langbeinites are a family of crystalline substances based on the structure of langbeinite with general formula M2M'2(SO4)3, where M is a large univalent cation, and M' is a small divalent cation. The sulfate group, SO2−4, can be substituted by other tetrahedral anions with a double negative charge such as tetrafluoroberyllate, selenate, chromate, molybdate, or tungstates. Although monofluorophosphates are predicted, they have not been described. By redistributing charges other anions with the same shape such as phosphate also form langbeinite structures. In these the M' atom must have a greater charge to balance the extra three negative charges.

Nickel compounds are chemical compounds containing the element nickel which is a member of the group 10 of the periodic table. Most compounds in the group have an oxidation state of +2. Nickel is classified as a transition metal with nickel(II) having much chemical behaviour in common with iron(II) and cobalt(II). Many salts of nickel(II) are isomorphous with salts of magnesium due to the ionic radii of the cations being almost the same. Nickel forms many coordination complexes. Nickel tetracarbonyl was the first pure metal carbonyl produced, and is unusual in its volatility. Metalloproteins containing nickel are found in biological systems.

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. Heptahydrate is also known, in form of unstable green crystalline solid.

Nickel is one of the metals that can form Tutton's salts. The singly charged ion can be any of the full range of potassium, rubidium, cesium, ammonium (), or thallium. As a mineral the ammonium nickel salt, (NH4)2Ni(SO4)2 · 6 H2O, can be called nickelboussingaultite. With sodium, the double sulfate is nickelblödite Na2Ni(SO4)2 · 4 H2O from the blödite family. Nickel can be substituted by other divalent metals of similar sized to make mixtures that crystallise in the same form.

<span class="mw-page-title-main">Nickel oxyacid salts</span>

The Nickel oxyacid salts are a class of chemical compounds of nickel with an oxyacid. The compounds include a number of minerals and industrially important nickel compounds.

<span class="mw-page-title-main">Iron(II) perchlorate</span> Chemical compound

Iron(II) perchlorate is the inorganic compound with the formula Fe(ClO4)2·6H2O. A green, water-soluble solid, it is produced by the reaction of iron metal with dilute perchloric acid followed by evaporation of the solution:

A selenate selenite is a chemical compound or salt that contains selenite and selenate anions (SeO32- and SeO42-). These are mixed anion compounds. Some have third anions.

<span class="mw-page-title-main">Nickel(II) perchlorate</span> Compound of nickel

Nickel(II) perchlorate is a collection of inorganic compounds with the chemical formula of Ni(ClO4)2(H2O)x. Its colors of these solids vary with the degree of hydration. For example, the hydrate forms cyan crystals, the pentahydrate forms green crystals, but the hexahydrate (Ni(ClO4)2·6H2O) forms blue crystals. Nickel(II) perchlorate hexahydrate is highly soluble in water and soluble in some polar organic solvents.

<span class="mw-page-title-main">Zinc perchlorate</span> Chemical compound

Zinc perchlorate is the inorganic compound with the chemical formula Zn(ClO4)2 which forms the hexahydrate.

Caesium selanate is an inorganic compound, with the chemical formula of Cs2SeO4. It can form colourless crystals of the orthorhombic crystal system.

<span class="mw-page-title-main">Cobalt(II) perchlorate</span> Chemical compound

Cobalt(II) perchlorate is an inorganic chemical compound with the formula Co(ClO4)2·nH2O (n = 0,6). The pink anhydrous and red hexahydrate forms are both hygroscopic solids.

References

  1. 1 2 Record of Nickelselenat in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 2019-12-30.
  2. 1 2 R. J. Meyer (2013), [ 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)
  3. William M. Haynes (2016), [ , 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.
  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)