Dicarbonyl(cyclopentadienyl)cobalt(I)

[12078-25-0] C7H5CoO2 (MW 180.05) InChI = 1S/C5H5.2CO.Co/c1-2-4-5-3-1;2*1-2;/h1-5H;;; InChIKey = HUSLGLMTBHLWKG-UHFFFAOYSA-N (catalyst, especially for alkyne trimerization and cotrimerization;3-5 source of a wide range of cyclopentadienylcobalt complexes and of cyclopentadienones, pyridones,10 etc.) Alternate Names: cyclopentadienyldicarbonylcobalt; cyclopentadienylcobalt dicarbonyl. Physical Data: bp 139–140 °C/710 mmHg; 37–38.5 °C/2 mmHg. Solubility: very sol all common org solvents; insol H2O. Form Supplied in: dark red liquid; available commercially. Preparative Methods: synthesized quantitatively from Octacarbonyldicobalt and Cyclopentadiene1 or from Bis(cyclopentadienyl)cobalt and Carbon Monoxide.2 Handling, Storage, and Precautions: somewhat air sensitive; toxic; best stored under CO or inert gas (N2, Ar) at low temperature (<0 °C). Use in a fume hood.