Nickel(II) nitrate
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| Names | |
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| IUPAC name
Nickel(II) nitrate
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| Other names
Nickel nitrate
Nickelous nitrate Nitric acid, nickel(2+) salt | |
| Identifiers | |
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3D model (JSmol)
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PubChem CID
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| UN number | 2725 |
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| Properties | |
| Ni(NO3)2 | |
| Molar mass | 182.703 g/mol (anhydrous) 290.79 g/mol (hexahydrate) |
| Appearance | emerald green hygroscopic solid |
| Odor | odorless |
| Density | 2.05 g/cm3 (hexahydrate) |
| Melting point | 56.7 °C (134.1 °F; 329.8 K) (hexahydrate) |
| Boiling point | 120–145 °C (248–293 °F; 393–418 K) (hexahydrate, decomposes to basic nickel nitrate)[1] |
| 243 (hexahydrate) g/100ml (0 °C)[2] | |
| Solubility | soluble in ethanol |
| +4300.0·10−6 cm3/mol (+6 H2O) | |
Refractive index (nD)
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1.422 (hexahydrate) |
| Structure | |
| monoclinic (hexahydrate) | |
| Hazards | |
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| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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1620 mg/kg (oral, rat) |
| Safety data sheet (SDS) | External MSDS |
| Related compounds | |
Other anions
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Nickel(II) sulfate Nickel(II) chloride |
Other cations
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Palladium(II) nitrate |
Related compounds
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Cobalt(II) nitrate Copper(II) nitrate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Template:Chembox Footer/trackingTemplate:Short description
Nickel (II) nitrate is the inorganic compound Ni(NO3)2 or any hydrate thereof. In the hexahydrate, the nitrate anions are not bonded to nickel. Other hydrates have also been reported: Ni(NO3)2.9H2O, Ni(NO3)2.4H2O, and Ni(NO3)2.2H2O.[3]
It is prepared by the reaction of nickel oxide with nitric acid:
- NiO + 2 HNO3 + 5 H2O → Ni(NO3)2.6H2O
The anhydrous nickel nitrate is typically not prepared by heating the hydrates. Rather it is generated by the reaction of hydrates with dinitrogen pentoxide or of nickel carbonyl with dinitrogen tetroxide:[3]
- Ni(CO)4 + 2 N2O4 → Ni(NO3)2 + 2 NO + 4 CO
The hydrated nitrate is often used as a precursor to supported nickel catalysts.[3]
Structure
Nickel(II) compounds with oxygenated ligands often feature octahedral coordination geometry. Two polymorphs of the tetrahydrate Ni(NO3)2.4H2O have been crystallized. In one the monodentate nitrate ligands are trans[4] while in the other they are cis.[5]
Reactions and uses
Nickel(II) nitrate is primarily used in electrotyping and electroplating of metallic nickel.
In heterogeneous catalysis, nickel(II) nitrate is used to impregnate alumina. Pyrolysis of the resulting material gives forms of Raney nickel and Urushibara nickel.[6] In homogeneous catalysis, the hexahydrate is a precatalyst for cross coupling reactions.[7]
References
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- ^ Page Module:Citation/CS1/styles.css has no content.Pietsch, E. H. E. (1966). Gmelins Handbuch der Anorganischen Chemie, Nickel Teil B 2 (in German) (8th ed.). Weinheim/Bergstr.: Verlag Chemie GmbH. p. 509.
{{cite book}}: CS1 maint: unrecognized language (link) - ^ Perry's Chem Eng Handbook, 7th Ed
- ^ a b c Script error: No such module "Template wrapper".
- ^ Page Module:Citation/CS1/styles.css has no content.Morosin, B.; Haseda, T. (1979). "Crystal Structure of the β Form of Ni(NO3)2.4H2O". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 35 (12): 2856–2858. doi:10.1107/S0567740879010827.
- ^ Page Module:Citation/CS1/styles.css has no content.Gallezot, P.; Weigel, D.; Prettre, M. (1967). "Structure du Nitrate de Nickel Tétrahydraté". Acta Crystallographica. 22 (5): 699–705. Bibcode:1967AcCry..22..699G. doi:10.1107/S0365110X67001392.
- ^ Page Module:Citation/CS1/styles.css has no content.Sarko, Christopher R.; Dimare, Marcello; Yus, Miguel; Alonso, Francisco (2014). "Nickel Catalysts (Heterogeneous)". Encyclopedia of Reagents for Organic Synthesis. pp. 1–8. doi:10.1002/047084289X.rn011.pub2. ISBN 978-0-470-84289-8.
- ^ Page Module:Citation/CS1/styles.css has no content.Xiao, Yu-Lan; Zhang, Xingang (2017). "Nickel(II) Nitrate Hexahydrate". Encyclopedia of Reagents for Organic Synthesis. pp. 1–3. doi:10.1002/047084289X.rn02013. ISBN 978-0-470-84289-8.
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