Das cubane

The Das cubane is a transition metal carboxylate complex with the formula [CoO(OAc)py]₄ where OAc is acetate and py is pyridine. The compound is named after Birinchi K. Das, who led the team that discovered the cluster. The compound features a Co₄O₄ cubane-type cluster core. Each Co(III) center is low-spin and has octahedral geometry. The compound is prepared by mixing a cobalt(II) salt with acetate and pyridine followed by oxidation with hydrogen peroxide.^[1] Cobalt(III) carboxylates have attracted interest as catalysts for the oxidation of xylene to terephthalic acid.^[2]

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Das cubane

Names
Other names tetrakis[μ-(acetato-κO:κO')]tetra-μ3-oxotetrakis(pyridine)tetracobalt
Identifiers
CAS Number	209162-45-8
3D model (JSmol)	Interactive image
InChI InChI=1S/4C5H5N.4C2H4O2.4Co.4O/c4*1-2-4-6-5-3-1;4*1-2(3)4;;;;;;;;/h4*1-5H;4*1H3,(H,3,4);;;;;;;;/q;;;;;;;;4*+1;;;;/p-4 Key: JIRPTERIJDAISX-UHFFFAOYSA-J
SMILES [Co+]=O.[Co+]=O.[Co+]=O.[Co+]=O.n1ccccc1.n1ccccc1.n1ccccc1.n1ccccc1.CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].CC(=O)[O-]
Properties
Chemical formula	C28H32Co4N4O12
Molar mass	852.313 g·mol−1
Appearance	olive green solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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