Neodymium tantalate
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| ImageFile = LuTaO4structure.jpg
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| ImageCaption = The structure of Neodymium tanatalate. Atoms are: O(red), Ta(blue) and Nd(green)
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| Section1 = {{Chembox Identifiers
| CASNo = 12344-26-2
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| PubChem = 157362626
| StdInChI=1S/Nd.4O.Ta/q+3;4*-2;+5
| StdInChIKey = BIUUBSDKMPQKED-UHFFFAOYSA-N
| SMILES = [O-2].[O-2].[O-2].[O-2].[Nd+3].[Ta+5]
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| Section2 = {{Chembox Properties
| Formula = NdTaO4
| MolarMass = 389.19
| Appearance = gray-purple solid
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Neodymium tantalate is an inorganic compound with the chemical formula NdTaO4. It is prepared by reacting neodymium oxide and tantalum pentoxide at 1200 °C.Krylov, E. I.; Strelina, M. M. Praseodymium and neodymium orthotantalates. Zhurnal Neorganicheskoi Khimii, 1961. 6: 235-235. {{issn|0044-457X}}. It reacts with a mixture of tantalum pentoxide and chlorine gas at high temperature to obtain Nd2Ta2O7Cl2.{{Cite journal |last=U. Schaffrath, R. Gruehn |date=1988-12-01 |title=Nd7,33Ta8O28CI6 — ein Zwischenprodukt des thermischen Abbaus von Nd2Ta2O7Cl2: Präparation, Struktur und magnetische Eigenschaften / Nd7,33Ta8O28Cl6 — an Intermediate Product of the Thermal Decomposition of Nd2Ta2O7Cl2: Preparation, Crystal Structure and Magnetic Properties |journal=Zeitschrift für Naturforschung B |volume=43 |issue=12 |pages=1567–1574 |doi=10.1515/znb-1988-1208 |s2cid=98811409 |issn=1865-7117 |doi-access=free }} It is ammonolyzed at high temperature to obtain oxynitrides of Nd-Ta.{{Cite journal |last=Pascal Maillard, Franck Tessier, Emmanuelle Orhan, François Cheviré, Roger Marchand |date=January 2005 |title=Thermal Ammonolysis Study of the Rare-Earth Tantalates RTaO 4 |url=https://pubs.acs.org/doi/10.1021/cm040131p |journal=Chemistry of Materials |language=en |volume=17 |issue=1 |pages=152–156 |doi=10.1021/cm040131p |s2cid=95148003 |issn=0897-4756 |access-date=2021-06-06|url-access=subscription }}
Properties
{{Technical|section|date=May 2022}}
Neodymium tantalate forms violet crystals of the monoclinic system, with space group I2/a, unit cell dimensions a = 0.55153 nm, b = 1.12388 nm, c = 0.51184 nm, β = 95.731°, with formulas per unit cell Z = 4.{{Cite journal |author = Kaijie Ning, Qingli Zhang, Deming Zhang, Jintai Fan, Dunlu Sun, Xiaofei Wang, Yin Hang |editor= |format= |url= |title= Crystal growth, characterization of NdTaO{{sub|4}}: A new promising stoichiometric neodymium laser material |journal= Journal of Crystal Growth|type= |orig-year= | agency = |edition= Journal of Crystal Growth |date= 2014 |volume= 388 |issue= |number= |pages = 83–86 |series= |issn = |doi = 10.1016/j.jcrysgro.2013.10.030 |bibcode = 2014JCrGr.388...83N|arxiv = |pmid = |language= |quote= |doi-access= free}}
There is a metastable high-pressure phase of the monoclinic system, space group P21/c, cell parameters a = 0.75920 nm, b = 0.54673 nm, c = 0.77022 nm, β = 100.032°, Z = 4.{{Cite journal |author = Titov Yu. A., Sych A. M., Sokolov A. N., Kapshuk A. A., Markiv V. Ya., Belyavina N. M. |editor= |format= |url= http://cat.inist.fr/?aModele=afficheN&cpsidt=1506065 |title= Crystal structure of the high-pressure modification of NdTaO{{sub|4}} |type= |orig-year= | agency = |edition= Journal of alloys and compounds |location= |date= 2000 |publisher= |volume= 311 |number= 2|pages = 252–255 |series= |isbn = |issn = |doi = |bibcode = |arxiv = |pmid = |archive-url = https://web.archive.org/web/20140812205242/http://cat.inist.fr/?aModele=afficheN&cpsidt=1506065 |archive-date = 2014-08-12 |language= |quote= }}
Neodymium tantalate is insoluble in water.{{Citation needed|date=May 2022}}
See also
References
{{Reflist}}
External links
- {{Cite journal |last=Patrick N. Walsh, Harold W. Goldstein, David White |date=May 1960 |title=Vaporization of Rare-Earth Oxides |url=http://doi.wiley.com/10.1111/j.1151-2916.1960.tb14589.x |journal=Journal of the American Ceramic Society |language=en |volume=43 |issue=5 |pages=229–233 |doi=10.1111/j.1151-2916.1960.tb14589.x |issn=0002-7820 |access-date=2021-06-06|url-access=subscription }}
Category:Neodymium(III) compounds
{{Neodymium compounds}}
{{Tantalum compounds}}