Solid chromium(III) acetylacetonate
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Names | |
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IUPAC name
Tris(acetylacetonato)chromium(III)
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Other names
Tris(2,4-pentanediono)chromium(III), Cr(acac)3, Cr(pd)3
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Identifiers | |
3D model (JSmol)
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.040.463 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
Cr(C5H7O2)3 | |
Molar mass | 349.32 |
Appearance | deep maroon |
Density | 1.34 g/cm3 |
Melting point | 210 °C (410 °F; 483 K) |
Boiling point | 340 °C (644 °F; 613 K) (sublimes near 110°C)[2] |
Solubility in non-polar organic solvents | soluble |
Hazards | |
GHS labelling: | |
Warning | |
H315, H319, H335 | |
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chromium(III) acetylacetonate is the coordination compound with the formula Cr(C5H7O2)3, sometimes designated as Cr(acac)3. This purplish coordination complex is used in NMR spectroscopy as a relaxation agent because of its solubility in nonpolar organic solvents and its paramagnetism.