Copper(II) trifluoroacetate

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Copper(II) trifluoroacetate
Names
IUPAC name
copper;2,2,2-trifluoroacetate
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • anhydrous: 626-936-5
  • hydrate: 626-936-5
  • anhydrous: InChI=1S/2C2HF3O2.Cu/c2*3-2(4,5)1(6)7;/h2*(H,6,7);/q;;+2/p-2
    Key: JIDMEYQIXXJQCC-UHFFFAOYSA-L
  • hydrate: InChI=1S/2C2HF3O2.Cu.H2O/c2*3-2(4,5)1(6)7;;/h2*(H,6,7);;1H2
    Key: UXLSNKPEIUIWAD-UHFFFAOYSA-N
  • anhydrous: C(=O)(C(F)(F)F)[O-].C(=O)(C(F)(F)F)[O-].[Cu+2]
  • hydrate: C(=O)(C(F)(F)F)O.C(=O)(C(F)(F)F)O.O.[Cu]
Properties
(CF3COO)2Cu
Molar mass 289.576 g·mol−1
Appearance
  • blue wet crystals (anhydrous)[1]
  • light blue crystals (tetrahydrate)[2]
  • blue crystals (diacetonitrile)
soluble[3]
Hazards
GHS labelling:[4]
GHS07: Exclamation mark
Warning
H315, H319
P264, P280, P302+P352, P305+P351+P338, P321, P332+P313, P337+P313, P337+P317, P362+P364
NFPA 704 (fire diamond)
[5]
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
1
0
NIOSH (US health exposure limits):[6]
REL (Recommended)
 1 mg/m3 (TWA, as Copper)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Copper(II) trifluoroacetate is the trifluoroacetate of divalent copper with the chemical formula Cu(CF3COO)2.

It exists as the anhydride, hydrate and adducts of other solvents. The hydrate begins to lose two waters of crystallisation at 108 °C (226 °F), and loses all crystal water at 173 °C (343 °F) to form the anhydrous form. This begins to decompose at 220 °C (428 °F).

Preparation

Copper trifluoroacetate can be obtained by reacting trifluoroacetic acid with copper oxide, copper hydroxide or basic copper carbonate. Acetone can replace the water molecules in copper trifluoroacetate hydrate, and under reduced pressure conditions, the acetone can be removed to obtain anhydrous material.[1]

Use

Adducts

References

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