neodymium nitrate

{{short description|Inorganic chemical compound}}

{{chembox

| ImageFile = Neodymium nitrate.jpg

| Name = Neodymium(III) nitrate

| OtherNames = Neodymium trinitrate

|Section1 = {{Chembox Identifiers

| index1_label = hexahydrate

| CASNo = 10045-95-1

| CASNo1 = 16454-60-7

| PubChem = 204494

| EINECS = 233-153-9

| ChemSpiderID = 9155614

| SMILES = [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Nd+3]

| SMILES1= [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Nd+3]

| InChI1=1S/3NO3.Nd.6H2O/c3*2-1(3)4;;;;;;;/h;;;;6*1H2/q3*-1;+3;;;;;;

| InChIKey1 = VQVDTKCSDUNYBO-UHFFFAOYSA-N

}}

|Section2={{Chembox Properties

| Formula = Nd(NO₃)₃(H₂O)_x

| MolarMass = 330.25 g/mol (anhydrous)
438.35 g/mol (hexahydrate)

| MeltingPtC = 1374

| Density = 6.5g/cm³

| Appearance = vibrant pink/violet solid

}}

|Section3={{Chembox Structure

| Coordination = Tricapped trigonal prismatic
(nine-coordinate)

}}

|Section7={{Chembox Hazards

| GHSPictograms = {{GHS03}}{{GHS07}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|272|302|312|315|319|332|335}}

| PPhrases = {{P-phrases|261|264|270|271|280|301+312|302+352|304+312|304+340|305+351+338|312|321|322|330|332+313|337+313|362|363|403+233|405|501}}

}}

}}

Neodymium nitrate is an inorganic compound with the formula {{chem2|Nd(NO3)3*(x(H2O)}} . It is typically encountered as the hexahydrate, Nd(NO₃)₃·6H₂O, which is more accurately formulated as [Nd(NO₃)₃(H₂O)₄].2H₂O to reflect the crystal structure.{{ cite journal | title = Tetraaquatrinitratoneodymium(III) dihydrate, [Nd(NO₃)₃(H₂O)₄].2H₂O | first1 = D. J. | last1 = Rogers | first2 = N. J. | last2 = Taylor | first3 = G. E. | last3 = Toogood | journal = Acta Crystallogr. C | volume = 39 | year = 1983 | issue = 8 | pages = 939–941 | doi = 10.1107/S0108270183006927 | doi-access = free | bibcode = 1983AcCrC..39..939R }} It decomposes to NdONO₃ at elevated temperature.{{cite journal|last1=Van Vuuren|first1=C.P.J.|last2=Strydom|first2=C.A.|title=The thermal decomposition of neodymium nitrate|journal=Thermochimica Acta|volume=104|year=1986|pages=293–298|issn=0040-6031|doi=10.1016/0040-6031(86)85204-2|bibcode=1986TcAc..104..293V }}

It is used in the extraction and purification of neodymium from its ores.{{cite book|doi=10.1002/14356007.a22_607 |chapter=Rare Earth Elements |title=Ullmann's Encyclopedia of Industrial Chemistry |date=2000 |last1=McGill |first1=Ian |isbn=978-3-527-30385-4 }}