Europium(III) chloride hexahydrate

Europium(III) chloride hexahydrate File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Europium(III) chloride hexahydrate File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...

Properties

Europium(III) chloride (EuCl₃), also known as europium trichloride, is a compound of europium and chlorine. It is a yellow solid which begins to decompose at or below the melting point^[1] to give at least some EuCl₂. Being hygroscopic it rapidly absorbs water on exposure to moist air to form a white crystalline hexahydrate, EuCl₃.6H₂O. It is soluble in water, and (when anhydrous) it is expected to be also highly soluble in ethanol (by analogy with SmCl₃ ). It is nine-coordinate (trigonal prismatic)^[3], and it crystallises with the UCl₃ structure^[1]. General Name, Symbol, Number Europium, Eu, 63 Chemical series Lanthanides Group, Period, Block _, 6, f Density, Hardness 5244 kg/m3, no data Appearance silvery white Atomic properties Atomic weight 151. ... General Name, Symbol, Number chlorine, Cl, 17 Series halogens Group, Period, Block 17 (VIIA), 3, p Density, Hardness 3. ... A hygroscopic or hydroscopic substance is a substance that absorbs water readily from its surroundings. ... Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. ... A falling water droplet Water (from the Anglo-Saxon and Low German wæter) is a colourless, tasteless, and odourless substance that is essential to all known forms of life and is the most universal solvent. ... A substance is soluble in a fluid if it dissolves in the fluid. ... Ethyl alcohol, also known as ethanol or grain alcohol, is a flammable, colorless chemical compound, one of the alcohols that is most often found in alcoholic beverages. ... Overview Samarium(III) chloride (SmCl3), also known as samarium trichloride, is a compound of samarium and chlorine. ...

CAS Registry No:[10025-76-0] (anhydrous); [13759-92-7] (hexahydrate).

Density: 4.89 g cm^-3(anhydrous) at 20 °C.

Molecular weight of 258.32 (anhydrous) or 366.41 (hexahydrate).

Preparation of anhydrous EuCl₃

Simple rapid heating of the hydrate alone may cause small amounts of hydrolysis ^[1]. Anhydrous EuCl₃ can be made from the hydrate by heating with an excess of thionyl chloride for around 15 hours^[1],[4]. Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. ... Hydrolysis is a chemical process in which a molecule is cleaved into two parts by the addition of a molecule of water. ... Liquids and solids (powders) are anhydrous if they are without water, i. ... Thionyl chloride (or thionyl dichloride) is an inorganic compound with the formula S O Cl2. ...

Uses

Europium(III) chloride, can be used for the preparation of europium(II) chloride, by reduction in a gold boat using hydrogen gas while heating slowly to 700 °C^[1]. The anhydrous chloride may also be used to prepare organometallic compounds of europium, such as bis(pentamethylcyclopentadienyl)europium(II) complexes^[5],[6]. Europium(III) chloride can be used as a starting point for the preparation of other europium salts. General Name, Symbol, Number Hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1 (IA), 1 , s Density, Hardness 0. ... The chloride ion is formed when the element chlorine picks up one electron to form the anion (negatively charged ion) Cl−. The salts of hydrochloric acid HCl contain chloride ions and are also called chlorides. ... Organometallic have classically been compounds having bonds between one or more metal atoms and one or more carbon atoms of an organyl group. ... General Name, Symbol, Number Europium, Eu, 63 Chemical series Lanthanides Group, Period, Block _, 6, f Density, Hardness 5244 kg/m3, no data Appearance silvery white Atomic properties Atomic weight 151. ... In chemistry, salt is a general term used for ionic compounds composed of positively charged cations and negatively charged anions, so that the product is neutral and without a net charge. ...

Suppliers

Alfa: http://www.alfa.com/alf/index.htm

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Aldrich: http://www.sigmaaldrich.com

Strem: http://www.strem.com/code/index.ghc

In the US, several of these suppliers also distribute through Fisher: https://www1.fishersci.com/index.jsp

or VWR: http://www.vwr.com/index.htm

References

1. F. T. Edelmann, P. Poremba, in: Synthetic Methods of Organometallic and Inorganic Chemistry, (W. A. Herrmann, ed.), Vol. 6, Georg Thieme Verlag, Stuttgart, 1997.
2. CRC Handbook of Chemistry and Physics (58th edition), CRC Press, West Palm Beach, Florida, 1977.
3. N. N. Greenwood, A. Earnshaw, Chemistry of the Elements, Pergamon Press, Oxford, UK, 1984.
4. J. H. Freeman, M. L. Smith, J. Inorg. Nucl. Chem. 7, 224 (1958).
5. T. D. Tilley et al., Inorg. Chem. 19, 2999 (1980); also see ref. 1, p57.
6. W. J. Evans, L. A. Hughes, T. P. Hanusa, Organometallics 5, 1285 (1986); also see ref. 1, p58.