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MgCu2

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MgCu2

The crystal structure of MgCu2. Magnesium is shown in green, copper in brown.
Names
IUPAC name Copper - magnesium (2:1)
Other names Cu2Mg
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2Cu.MgKey: BSBUOWMDDLTWGL-UHFFFAOYSA-N
SMILES
  • ..
Properties
Chemical formula Cu2Mg
Molar mass 151.397 g·mol
Melting point 520 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

MgCu2 is a binary intermetallic compound of magnesium (Mg) and copper (Cu) adopting cubic crystal structure, more specifically the C15 Laves phase. The space group of MgCu2 is Fd3m with lattice parameter a = 7.04 Å.

Preparation

MgCu2 can be prepared by hydrogenation of Mg2Cu or the reaction of magnesium hydride and metallic copper at elevated temperature and pressure:

2 Mg2Cu + 3 H2 → 3 MgH2 + MgCu2
MgH2 + 2 Cu → MgCu2 + H2

MgCu2 can also be prepared by reacting of stoichiometric amounts of metals at about 380 °C in the presence of excess copper.

Properties

MgCu2 can react with boron or its oxide to form magnesium borides. It can also react with magnesium hydride to produce orthorhombic Mg2Cu, liberating hydrogen.

References

  1. Chen, W.; Sun, J. (2006). "The electronic structure and mechanical properties of MgCu2 Laves phase compound". Physica B: Condensed Matter. 382 (1–2): 279–284. Bibcode:2006PhyB..382..279C. doi:10.1016/j.physb.2006.02.031. ISSN 0921-4526.
  2. Ganeshan, S.; Shang, S.L.; Zhang, H.; Wang, Y.; Mantina, M.; Liu, Z.K. (2009). "Elastic constants of binary Mg compounds from first-principles calculations". Intermetallics. 17 (5): 313–318. doi:10.1016/j.intermet.2008.11.005. ISSN 0966-9795.
  3. Shibata, Kazuya; Tanaka, Koji; Kurumatani, Kosuke; Nishida, Yasuki; Takeshita, Hiroyuki T. (2013). "Thermodynamic Evaluation for Formation of MgCu2from MgH2and Cu". Thermodynamic Evaluation for Formation of MgCu2 from MgH2 and Cu. pp. 221–226. doi:10.1002/9781118792148.ch28. ISBN 9781118792148.
  4. Arcot, Binny; Cabral, C.; Harper, J. M. E.; Murarka, S. P. (2011). "Intermetallic Reactions Between Copper and Magnesium as an Adhesion / Barrier Layer". MRS Proceedings. 225. doi:10.1557/PROC-225-231. ISSN 0272-9172.
  5. Birol, Yucel (2013). "Response to Thermal Exposure of Ball-Milled Cu-Mg/B2O3 Powder Blends". Metallurgical and Materials Transactions B. 44 (4): 969–973. Bibcode:2013MMTB...44..969B. doi:10.1007/s11663-013-9860-6. ISSN 1073-5615. S2CID 136588797.
  6. Volkova, L. S.; Kalinnikov, G. V.; Ivanov, A. V.; Shilkin, S. P. (2012). "Synthesis of Mg2Cu and MgCu2 nanoparticles in a KCl-NaCl-MgCl2 melt". Inorganic Materials. 48 (11): 1078–1081. doi:10.1134/S0020168512110179. ISSN 0020-1685. S2CID 96203397.

See also

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