Copper(II) acetylacetonate

Copper(II) acetylacetonate is the coordination compound with the formula Cu(O2C5H7)2. It is the homoleptic acetylacetonate complex of copper(II). It is insoluble within water and exists as a bright blue solid. According to X-ray crystallography, the Cu center is square planar.[1] Single crystals of this compound exhibit the unusual property of being highly flexible, allowing the formation of knots. The flexibility is attributed to the nature of the intermolecular forces.[2]

Copper(II) acetylacetonate
Names
Other names
Bis(2,4-pentanedionato)copper; Cupric acetylacetonate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.147
EC Number
  • 236-477-9
UNII
  • InChI=1S/2C5H8O2.Cu/c2*1-4(6)3-5(2)7;/h2*3,6H,1-2H3;
    Key: ZKXWKVVCCTZOLD-UHFFFAOYSA-N
  • CC(=CC(=O)C)O.CC(=CC(=O)C)O.[Cu]
Properties
C10H14CuO4
Molar mass 261.764 g·mol−1
Appearance blue solid
Density 0.721 g/cm3
Melting point 279–283 °C (534–541 °F; 552–556 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References
  1. Vreshch, Volodimir D.; Yang, Jen-Hsien; Zhang, Haitao; Filatov, Alexander S.; Dikarev, Evgeny V. (2010). "Monomeric Square-Planar Cobalt(II) Acetylacetonate: Mystery or Mistake?". Inorg. Chem. 49 (18): 8430–8434. doi:10.1021/ic100963r. PMID 20795642.
  2. Aidan J. Brock, Jacob J. Whittaker, Joshua A. Powell, Michael C. Pfrunder, Arnaud Grosjean, Simon Parsons, John C. McMurtrie, Jack K. Clegg (2018). "Elastically Flexible Crystals have Disparate Mechanisms of Molecular Movement Induced by Strain and Heat". Angew. Chem. Int. Ed. 57 (35): 11325–11328. doi:10.1002/anie.201806431. PMID 29998602.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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