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Merck

202231

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
UNSPSC Code:
12352103
NACRES:
NA.23
PubChem Substance ID:
EC Number:
244-526-0
Beilstein/REAXYS Number:
4148971
MDL number:

Product Name

Chromium(III) acetylacetonate, 97%

InChI key

JWORPXLMBPOPPU-LNTINUHCSA-K

InChI

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

SMILES string

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

assay

97%

form

solid

reaction suitability

core: chromium

bp

340 °C (lit.)

mp

210 °C (lit.)

Quality Level

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Analysis Note

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

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

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.

pictograms

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signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

>392.0 °F

flash_point_c

> 200 °C

ppe

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
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.
Gui-Ge Hou et al.
Chemical communications (Cambridge, England), 47(38), 10731-10733 (2011-08-27)
Two NbO-type MOFs based on ditopic pyridyl substituted diketonate ligands were reported. One exhibits a reversible SC-SC water encapsulation, while the other shows an interesting guest-driven luminescent property based on M(III) acetylacetonate (M = Eu and Fe) guest species.
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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