Chemistry:Neodymium(III) bromide

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Neodymium(III) bromide
Unit cell of PuBr3.png
Names
IUPAC name
Tribromoneodymium
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 236-897-2
Properties
NdBr3
Molar mass 383.95g (anhydrate)
492.05 (hexahydrate)
Appearance Off-white to pale green powder
Density 5.3 g/cm2
Melting point 684 °C (1,263 °F; 957 K)[2]
Boiling point 1,540 °C (2,800 °F; 1,810 K)[1]
Structure
Bicapped trigonal prismatic[3]
8[3]
Hazards
Safety data sheet N-MSDS0052
GHS pictograms GHS07: Harmful
GHS Signal word Warning[4]
H315, H319, H335[4]
P261, P280, P305+351+338, P304+340, P405, P501[4][5]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Neodymium(III) bromide is an inorganic salt of bromine and neodymium the formula NdBr3. The anhydrous compound is an off-white to pale green solid at room temperature, with an orthorhombic PuBr3-type crystal structure.[6][7] The material is hygroscopic[8][9] and forms a hexahydrate in water (NdBr3· 6H2O), similar to the related neodymium(III) chloride.[10]

Preparation

The direct reaction of neodymium with bromine can create neodymium(III) bromide:

2Nd + 3Br2 → 2NdBr3

In the presence of carbon, neodymium(III) oxide reacts with carbon tetrabromide to produce neodymium(III) bromide.[11]

Structure

Neodymium(III) bromide adopts the plutonium(III) bromide crystal structure.[12] The neodymium ions are 8-coordinate and adopt a bicapped trigonal prismatic geometry.[13] The neodymium–bromine bond lengths are 3.07 Å and 3.09 Å.[14]

Related compounds

Neodymium(III) bromide forms compounds with hydrazine, such as NdBr3·N2H4·2H2O, which is a pink crystal that is soluble in water but insoluble in benzene, with d20°C = 3.2376 g/cm3.[15]

References

  1. ↑ "Neodymium(III) bromide | CAS 13536-80-6". https://www.scbt.com/scbt/product/neodymium-iii-bromide-13536-80-6. 
  2. ↑ Elements, American. "Neodymium(III) Bromide". https://www.americanelements.com/neodymium-iii-bromide-13536-80-6. 
  3. ↑ 3.0 3.1 Winter, Mark. "Neodymium»neodymium tribromide [WebElements Periodic Table"]. https://www.webelements.com/compounds/neodymium/neodymium_tribromide.html. Retrieved 20 December 2016. 
  4. ↑ 4.0 4.1 4.2 "Neodymium Bromide | ProChem, Inc.". https://prochemonline.com/product/neodymiumbromide-2626. 
  5. ↑ "Neodymium (III) bromide, ultra dry, 99.99% (metals basis)". http://lanhit.ru/en/proview.php?code=75. 
  6. ↑ Peter Paetzold (2009) (in German), Chemie Eine Einführung, Walter de Gruyter, p. 204, ISBN 978-3-11-021135-1 
  7. ↑ Peterson, J.R.; Heathman, S.; Benedict, U. (March 1993). "Energy dispersive X-ray diffraction analysis of NdBr3 at pressures up to 52 GPa". Journal of Alloys and Compounds 193 (1–2): 306–308. doi:10.1016/0925-8388(93)90380-6. 
  8. ↑ R. Blachnik (2013) (in German), Taschenbuch für Chemiker und Physiker Band 3: Elemente, anorganische Verbindungen und Materialien, Minerale, Springer-Verlag, p. 634, ISBN 978-3-642-58842-6 
  9. ↑ David R. Lide (Hrsg.): CRC Handbook of Chemistry and Physics. 90. Auflage. (Internet-Version: 2010), CRC Press/Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, S. 4-77.
  10. ↑ "NEODYMIUM BROMIDE | 13536-80-6". http://www.chemicalbook.com/ChemicalProductProperty_EN_CB4343967.htm. 
  11. ↑ Borisov, G. K.; Krasnova, S. G.; Khrenova, R. I. Preparation of anhydrous bromides of some lanthanidesTemplate:Ru. Zhurnal Neorganicheskoi Khimii, 1971. 16(22): 2899-2901.
  12. ↑ Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6. 
  13. ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8. 
  14. ↑ Zachariasen, W. H. (1948). "Crystal chemical studies of the 5f-series of elements. I. New structure types". Acta Crystallogr. 1 (5): 265–268. doi:10.1107/S0365110X48000703. 
  15. ↑ Izvestii︠a︡ vysshikh uchebnykh zavedeniĭ: Khimii︠a︡ i khimicheskai︠a︡ tekhnologii︠a︡, Tập 16,Số phát hành 1 (Ivanovskiĭ khimiko-tekhnologicheskiĭ in-t, 1973), trang 181. Retrieved on December 21, 2020.



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