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]
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| Names | |
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| IUPAC name
Tribromoneodymium
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.033.528 |
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PubChem CID
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CompTox Dashboard (EPA)
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| 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 | |
| GHS labelling: | |
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| Warning[4] | |
| H315, H319, H335[4] | |
| P261, P280, P304+P340, P305+P351+P338, P405, P501[4][5] | |
| Safety data sheet (SDS) | N-MSDS0052 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
- ^ "Neodymium(III) bromide | CAS 13536-80-6". www.scbt.com. Retrieved 20 December 2016.
- ^ Elements, American. "Neodymium(III) Bromide". American Elements. Retrieved 20 December 2016.
- ^ a b Winter, Mark. "Neodymium»neodymium tribromide [WebElements Periodic Table]". www.webelements.com. Archived from the original on 2021-01-16. Retrieved 20 December 2016.
- ^ a b c "Neodymium Bromide | ProChem, Inc". prochemonline.com. Retrieved 20 December 2016.
- ^ "Neodymium (III) bromide, ultra dry, 99.99% (metals basis)". lanhit.ru. Retrieved 20 December 2016.[permanent dead link]
- ^ Peter Paetzold (2009), Chemie Eine Einführung (in German), Walter de Gruyter, p. 204, ISBN 978-3-11-021135-1
- ^ 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. S2CID 136411696.
- ^ R. Blachnik (2013), Taschenbuch für Chemiker und Physiker Band 3: Elemente, anorganische Verbindungen und Materialien, Minerale (in German), Springer-Verlag, p. 634, ISBN 978-3-642-58842-6
- ^ 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.
- ^ "NEODYMIUM BROMIDE | 13536-80-6". www.chemicalbook.com. Retrieved 20 December 2016.
- ^ Borisov, G. K.; Krasnova, S. G.; Khrenova, R. I. Preparation of anhydrous bromides of some lanthanides{{Country data {{{1}}} | flag link/core | variant = | size = | name = | altlink = national rugby union team | altvar = rugby union}}. Zhurnal Neorganicheskoi Khimii, 1971. 16(22): 2899-2901.
- ^ Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6.
- ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8.
- ^ Zachariasen, W. H. (1948). "Crystal chemical studies of the 5f-series of elements. I. New structure types". Acta Crystallogr. 1 (5): 265–268. Bibcode:1948AcCry...1..265Z. doi:10.1107/S0365110X48000703.
- ^ 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.