Neodymium trichloride

Neodymium compounds: neodymium trichloride

The neodymium in neodymium trichloride formally is in the oxidation state 3.

Neodymium trichloride

• Formula as often written: NdCl₃
• Hill system formula: Cl₃Nd₁
• CAS registry number: [10024-93-8]
• Formula weight: 250.598
• Class: chloride

Synonyms

• neodymium trichloride
• neodymium(III) chloride
• neodymium chloride

Physical properties

• Colour: mauve
• Appearance: crystalline solid
• Melting point: 758°C
• Boiling point: 1600°C
• Density: 4130 kg m^-3

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Element analysis

Element percentages for the elements in neodymium trichloride

Element	%
Cl	42.44
Nd	57.56

Synthesis

Nd₂O₃ + 6NH₄Cl → 2NdCl₃ + 3H₂O + 6NH₃

Pure anhydrous chloride neodymium(III) chloride may be made by heating a mixture of solid neodymium oxide, Nd₂O₃, and ammonium chloride. This is folloiwed by extended heating under vacuum at 300-320°C to remove excess ammonium chloride. The product is moisture sensitive and formed as a powder. Pure samples of other lanthanide chlorides can be made in similar fashion.

Solid state structure

• Geometry of neodymium: 9 coordinate: tricapped trigonal prismatic
• Prototypical structure:

Isotope pattern

What follows is the calculated isotope pattern for the NdCl₃ unit with the most intense ion set to 100%.

Formula: Nd₁Cl₃

mass  %
247  54.4 ___________________________
248  24.4 ____________
249 100.0 __________________________________________________
250  40.1 ____________________
251  97.0 ________________________________________________
252  23.5 ____________
253  61.1 _______________________________
254   5.9 ___
255  34.6 _________________
256   0.5 
257  15.5 ________
258   0.0 
259   3.9 __
260   0.0 
261   0.4 

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

• R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
• N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
• F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
• A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
• R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
• A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
• A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
• J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
• D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
• J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
• J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

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Neodymium	Néodyme
Neodym	Neodymium
Neodimio	Neodimio
Neodym	Neodímio