Tris(acetylacetonato)cobalt(III)

Tris(acetylacetonato)cobalt(III)
Names
	Other names Cobalt(III) acetylacetonate
Identifiers
CAS Number	21679-46-9;
3D model (JSmol)	Interactive image;
ChemSpider	4589065;
ECHA InfoCard	100.040.464
EC Number	244-527-6;
PubChem CID	24884269;
CompTox Dashboard (EPA)	DTXSID30893462 ;
	InChI InChI=1S/3C5H8O2.Co/c31-4(6)3-5(2)7;/h33,6H,1-2H3;/q;;;+3/p-3/b3*4-3+; Key: RHCQEPWEBDOALW-MUCWUPSWSA-K;
	SMILES C/C(=C\C(=O)C)/[O-].C/C(=C\C(=O)C)/[O-].C/C(=C\C(=O)C)/[O-].[Co+3];
Properties
Chemical formula	C15H21CoO6
Molar mass	356.260 g·mol−1
Appearance	green solid
Density	1.41 g/cm3
Melting point	213 °C (415 °F; 486 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H317, H334
Precautionary statements	P261, P264, P270, P272, P280, P285, P301+P312, P302+P352, P304+P341, P321, P330, P333+P313, P342+P311, P363, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tris(acetylacetonato)cobalt(III) is the coordination complex with the formula Co(C₅H₇O₂)₃. It is a green, diamagnetic solid that is soluble in organic solvents, but not in water. It is prepared by the reaction of cobalt(II) carbonate and acetylacetone in the presence of hydrogen peroxide. The solid is isomorphous with tris(acetylacetonato)iron(III), tris(acetylacetonato)manganese(III), and tris(acetylacetonato)aluminium.^[1] These complexes are chiral and often can be resolved into the individual enantiomers. Owing to its solubility in organic solvents, ttris(acetylacetonato)cobalt(III) is used to produce homogeneous catalysts by reduction.^[2]

References

^ Bryant, Burl E.; Fernelius, W. Conard (1957). "Cobalt(III) Acetylacetonate". Inorganic Syntheses. Vol. 5. pp. 188–189. doi:10.1002/9780470132364.ch53. ISBN 9780470132364.
^ Mayo, Peter D.; Tam, William (2002). "Tris(acetoacetonyl)cobalt". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rn00084. ISBN 0471936235.

[1] Bryant, Burl E.; Fernelius, W. Conard (1957). "Cobalt(III) Acetylacetonate". Inorganic Syntheses. Vol. 5. pp. 188–189. doi:10.1002/9780470132364.ch53. ISBN 9780470132364.

[2] Mayo, Peter D.; Tam, William (2002). "Tris(acetoacetonyl)cobalt". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rn00084. ISBN 0471936235.

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