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Merck
CN

202231

Sigma-Aldrich

Chromium(III) acetylacetonate

97%

Synonym(s):

Chromium(III) 2,4-pentanedionate, Cr(acac)3

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About This Item

Linear Formula:
Cr(C5H7O2)3
CAS Number:
Molecular Weight:
349.32
Beilstein:
4148971
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23
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Quality Level

Assay

97%

form

solid

reaction suitability

core: chromium

bp

340 °C (lit.)

mp

210 °C (lit.)

SMILES string

CC(=O)\C=C(\C)O[Cr](O\C(C)=C/C(C)=O)O\C(C)=C/C(C)=O

InChI

1S/3C5H8O2.Cr/c3*1-4(6)3-5(2)7;/h3*3,6H,1-2H3;/q;;;+3/p-3/b3*4-3-;

InChI key

JWORPXLMBPOPPU-LNTINUHCSA-K

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General description

Chromium(III) acetylacetonate (Cr(acac)₃) is a high-purity (≥97%) coordination complex that appears as a purple to very dark purple powder or in chunk form. It is a stable, air-insensitive compound, soluble in non-polar organic solvents. Its high thermal stability and well-defined molecular structure make it an excellent precursor for synthesizing advanced materials. Cr(acac)₃ is especially valued for applications in catalysis, thin film deposition, and as a molecular probe in spectroscopic studies.

Application

Chromium(III) acetylacetonate can be used as:
  • A precursor for the synthesis of chromium oxide (Cr₂O₃) nanoparticles, which are utilized in magnetic, catalytic, and electrochemical devices
  • A molecular precursor in chemical vapor deposition (CVD) and sol-gel processes to fabricate chromium-containing thin films for electrochromic and energy storage applications
  • A catalyst or catalyst precursor in selective oxidation and polymerization reactions, enabling efficient and sustainable organic transformations

Analysis Note

Used to modify the surface properties of solid polyurethanes formed in its presence.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

>392.0 °F

Flash Point(C)

> 200 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Michael E Ziebel et al.
Chemical science, 11(26), 6690-6700 (2020-09-22)
The incorporation of second-row transition metals into metal-organic frameworks could greatly improve the performance of these materials across a wide variety of applications due to the enhanced covalency, redox activity, and spin-orbit coupling of late-row metals relative to their first-row
Ik-Soo Shin et al.
The Analyst, 136(10), 2151-2155 (2011-03-25)
Though recently Ir(III) complexes have attracted much interest in electrochemiluminescent (ECL) analysis due to their high emission in various wavelengths, there were a few studies reported on its analytical applications. In this study, we evaluate the ECL from (pq)(2)Ir(acac) (pq
Chih-Chia Huang et al.
Chemical communications (Cambridge, England), (23)(23), 3360-3362 (2009-06-09)
A general approach involving a solvothermal method was developed to synthesize a series of silicate nanoshells (<100 nm) where both Gd silicate and Gd silicate:Eu nanoshells were further demonstrated to exhibit dual-modality MRI and optical imaging functions.
David N Paglia et al.
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 30(12), 1971-1978 (2012-06-02)
This study quantified the effects of local intramedullary delivery of an organic vanadium salt, which may act as an insulin-mimetic on fracture healing. Using a BB Wistar rat femoral fracture model, local vanadyl acetylacetonate (VAC) was delivered to the fracture
Yanfang Li et al.
Dalton transactions (Cambridge, England : 2003), 41(13), 3807-3816 (2012-02-24)
Biscyclometalated iridium(III) complexes with an ancillary acetylacetone ligand, Ir(L)(2)(acac), (L = 2-(benzo[b]thiophen-2-yl)pyridine (btp), 1-phenylisoquinoline (piq), 2-phenylbenzothiazole (bt), 2-phenylpyridine (ppy), acac = deprotonated acetylacetone), demonstrate spectroscopic changes in their UV-Vis absorption and luminescent emission under acidic conditions. Such changes were found

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