Chromium(II) acetylacetonate

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Chromium(II) acetylacetonate
Palladium(II) acetylacetonate 3D ball.png
Names
Other names
chromous acetylacetonate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.034.401 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 237-856-1
487208
PubChem CID
  • InChI=1S/2C5H7O2.Cr/c2*1-4(6)3-5(2)7;/h2*3H,1-2H3;/q2*-1;+2
    Key: JCHSWVKCCGSOCY-UHFFFAOYSA-N
  • CC(=O)[CH-]C(=O)C.CC(=O)[CH-]C(=O)C.[Cr+2]
Properties
C10H14CrO4
Molar mass 250.214 g·mol−1
Appearanceyellow-brown solid
Density 1.48 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Chromium(II) acetylacetonate is the coordination compound with the formula Cr(O2C5H7)2. It is the homoleptic acetylacetonate complex of chromium(II). It is an air-sensitive, paramagnetic yellow-brown solid. According to X-ray crystallography, the Cr center is square planar. [1] In contrast to the triplet ground state for this complex, the bis(pyridine) adduct features noninnocent acac2- ligand attached to Cr(III). [2]

Chromium(II) acetylacetonate is prepared by treating chromous acetate with acetylacetone: [3]

Cr2(O2CCH3)4(H2O)2 + 4 H2C(COCH3)2 → 2 Cr(CH3C(O)CHC(O)CH3)2 + 8 HO2CCH3 + 2 H2O

See also

References

  1. ↑ Cotton, F. A.; Rice, C. E.; Rice, G. W. (1977). "The Crystal and Molecular Structures of Bis(2,4-pentanedionato)chromium". Inorganica Chimica Acta. 24: 231-234. doi:10.1016/S0020-1693(00)93880-5.
  2. ↑ Vinum, Morten Gotthold; Voigt, Laura; Hansen, Steen H.; Bell, Colby; Clark, Kensha Marie; Larsen, René Wugt; Pedersen, Kasper S. (2020). "Ligand field-actuated redox-activity of acetylacetonate". Chemical Science. 11 (31): 8267–8272. doi:10.1039/d0sc01836h. PMC   8163028 . PMID   34094180.
  3. ↑ Ocone, L.R.; Block, B.P. (1966). "Anyhdrous Chromium(II) Acetate, Chromium(II) Acetate 1-Hydrate, and Bis(2,4-Pentanedionato)Chromium (II)". Inorganic Syntheses. Vol. 8. p. 125. doi:10.1002/9780470132395.ch33. ISBN   978-0-470-13167-1.
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