Indium(III) nitrate
{{Chembox
|Section1={{Chembox Identifiers
| index_label=anhydrous
| index1_label=monohydrate
| index3_label=trihydrate
| index4_label=tetrahydrate
| index5_label=pentahydrate
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo = 13770-61-1
| CASNo1=13465-14-0
| CASNo3=15650-88-1
| ChemSpiderID = 24472
| ChemSpiderID1 = 2341257
| ChemSpiderID3 = 26948018
| PubChem=26265
| PubChem1=3084148
| PubChem3=91886655
| PubChem4=138753438
| PubChem5=22446589
| EC_number = 237-393-5
| RTECS = NL1750000
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = WOP84073FA
| SMILES = [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[In+3]
| SMILES1 = [N+](=O)([O-])O[In](O[N+](=O)[O-])O[N+](=O)[O-].O
| SMILES3 = [N+](=O)([O-])O[In](O[N+](=O)[O-])O[N+](=O)[O-].O.O.O
| SMILES4 = [N+](=O)([O-])O[In](O[N+](=O)[O-])O[N+](=O)[O-].O.O.O.O
| StdInChI=1S/In.3NO3/c;3*2-1(3)4/q+3;3*-1
| StdInChIKey = LKRFCKCBYVZXTC-UHFFFAOYSA-N
| InChI1=1S/In.3NO3.H2O/c;3*2-1(3)4;/h;;;;1H2/q+3;3*-1;
| InChIKey1 = YZZFBYAKINKKFM-UHFFFAOYSA-N
| InChI3=1S/In.3NO3.3H2O/c;3*2-1(3)4;;;/h;;;;3*1H2/q+3;3*-1;;;
| InChIKey3 = HVDZMISZAKTZFP-UHFFFAOYSA-N
| InChI4=1S/In.3NO3.4H2O/c;3*2-1(3)4;;;;/h;;;;4*1H2/q+3;3*-1;;;;
| InChIKey4 = ZYYDOSLSINDXIQ-UHFFFAOYSA-N
}}
| Section2 = {{Chembox Properties
| AtmosphericOHRateConstant =
| Appearance = White solid
| BoilingPt =
| BoilingPtC =
| BoilingPt_ref =
| BoilingPt_notes=
| Density = 2.43 g/cm3 (pentahydrate)
| Formula = In(NO3)3
| HenryConstant =
| LogP =
| MolarMass = 300.83 g/mol
| MeltingPt =
| MeltingPtC = 100
| MeltingPt_ref =
| MeltingPt_notes= (decomposes, hydrate)
| pKa =
| pKb =
| Solubility = Soluble
| SolubleOther =
| Solvent =
| VaporPressure =
}}
| Section3 = {{Chembox Structure
| CrystalStruct = Monoclinic
| SpaceGroup = C2/c
| LattConst_a = 10.35 Å
| LattConst_b = 9.17 Å
| LattConst_c = 11.25 Å
| LattConst_alpha =
| LattConst_beta = 91.05
| LattConst_gamma =
| LattConst_ref =
| LattConst_Comment =
| UnitCellVolume = 1068 Å3
| UnitCellFormulas =
| Coordination =
| MolShape =
| OrbitalHybridisation =
| Dipole =
}}
|Section7={{Chembox Hazards
| GHSPictograms = {{GHS03}}{{GHS07}}
| GHSSignalWord = Warning
| HPhrases = {{H-phrases|272|315|319|335}}
| PPhrases = {{P-phrases|210|220|221|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|370+378|403+233|405|501}}
}}
}}
Indium(III) nitrate is a nitrate salt of indium which forms various hydrates. Only the pentahydrate has been crystallographically verified. Other hydrates are also reported in literature, such as the trihydrate.{{cite journal |author1=Galina V. Kozhevnikova |author2=Gábor Keresztury |title=The state of indium ions in nitrate solutions: A Raman spectroscopic study |journal=Inorganica Chimica Acta |date=1985 |volume=98 |issue=1 |pages=59–65 |doi=10.1016/S0020-1693(00)90751-5 |language=en}}
Production and reactions
Indium(III) nitrate hydrate is produced by the dissolution of indium metal in concentrated nitric acid followed by evaporation of the solution:{{cite journal |author1=D. G. Tuck |author2=E. J. Woodhouse |author3=P. Carty |title=Co-ordination compounds of indium. Part III. Indium(III) nitrate species |journal=Journal of the Chemical Society A: Inorganic, Physical, Theoretical |date=1966 |pages=1077–1080 |doi=10.1039/J19660001077 |language=en}}
:{{chem2 | In + 4 HNO3 -> In(NO3)3 + NO + 2 H2O }}
The hydrate first decomposes to a basic salt and then to indium(III) oxide at 240 °C. Anhydrous indium(III) nitrate is claimed to be produced by the reaction of anhydrous indium(III) chloride and dinitrogen pentoxide.{{cite journal |author1=B. O. Field |author2=C. J. Hardy |title=Volatile and anhydrous nitrato-complexes of metals: preparation by the use of dinitrogen pentroxide, and measurement of infrared spectra |journal=Journal of the Chemical Society |date=1964 |pages=4428–4434 |doi=10.1039/JR9640004428 |language=en}}
In the presence of excess nitrate ions, indium(III) nitrate converts to the [In(NO3)4]− ion.
The hydrolysis of indium(III) nitrate yields indium(III) hydroxide. It also reacts with sodium tungstate to form In(OH)WO4, [In(OH)2]2WO4, NaInWO4 or In2(WO4)3 depending on pH.{{cite journal |author1=Keita Yura |author2=Karl C. Fredrikson |author3=Egon Matijević |title=Preparation and properties of uniform colloidal indium compounds of different morphologies |journal=Colloids and Surfaces |date=1990 |volume=50 |pages=281–293 |doi=10.1016/0166-6622(90)80270-E |language=en}}{{cite journal | author = Shcherbina, K. G.; Mokhosoev, M. V.; Gruba, A. I. | title = Reaction of aluminum and indium nitrates with sodium tungstate in hot solutions | language = ru | journal = Zhurnal Neorganicheskoi Khimii | date = 1974 | volume = 19 | issue = 2 | pages = 396–399 | issn = 0044-457X }}