Neodymium(II) chloride

Neodymium(II) chloride or neodymium dichloride is a chemical compound of neodymium and chlorine with the formula NdCl2.

Neodymium(II) chloride
Names
Other names
Neodymium dichloride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/2ClH.Nd/h2*1H;/p-2
    Key: YATFJWWYFCCTHZ-UHFFFAOYSA-L
  • [Cl-].[Cl-].[Nd+2]
Properties
NdCl2
Molar mass 215.14 g/mol
Appearance Black solid[1]
Structure
Orthorhombic
Pnma, No. 62
Related compounds
Other anions
 Neodymium(II) bromide
Neodymium(II) iodide
Other cations
 SmCl2, EuCl2, DyCl2, TmCl2, YbCl2,
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Preparation

Neodymium(II) chloride can be prepared by reducing neodymium(III) chloride with lithium metal/naphthalene or lithium chloride in THF.[2]

Reduction of neodymium(III) chloride with neodymium metal at temperatures above 650 °C also yields neodymium(II) chloride:[3]

2 NdCl3 + Nd → 3 NdCl2

Structure

Neodymium(II) chloride adopts the PbCl2 (cotunnite) structure. Each Nd2+ ion is coordinated by nine Cl− ions in a tricapped trigonal prismatic arrangement. Seven of the Nd-Cl distances are in the range 2.95-3.14 Å while two are longer at 3.45 Å.[4][5]

References
  1. Brauer, Georg; Baudler, Marianne (1975). Handbuch der Präparativen Anorganischen Chemie, Band I. (3rd ed.). Stuttgart: Ferdinand Enke. ISBN 3-432-02328-6.
  2. Rossmainth, K. (1979-07-01). "Herstellung von Neodym(II)-chlorid in Lösung" [Preparation of neodymium(II) chloride in solution]. Monatshefte für Chemie - Chemical Monthly. 110 (4): 1019–1023. doi:10.1007/BF00906697. S2CID 99130833.
  3. Gerd Meyer, Lester R. Morss (1991). Synthesis of lanthanide and actinide compounds. Springer. p. 161. ISBN 0-7923-1018-7.
  4. Meyer, Gerd; Schleid, Thomas (1985). "Zweiwertiges Neodym: NdCl2 und KNd2Cl5". Z. anorg. allg. Chem. 528 (9): 55–60. doi:10.1002/zaac.19855280906.
  5. "ICSD Entry: 48206". Cambridge Structural Database: Access Structures. Cambridge Crystallographic Data Centre. Retrieved 2021-06-06.


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