| Identification | Back Directory | [Name]
DICARBONYLCYCLOPENTADIENYLCOBALT | [CAS]
12078-25-0 | [Synonyms]
CpCo(CO)2
Cyclopentadienyldicarbonylcobalt
DICARBONYLCYCLOPENTADIENYLCOBALT
Cobalt dicarbonyl cyclopentadiene
CYCLOPENTADIENYL COBALT DICARBONYL
Cobalt cyclopentadienyl dicarbonyl
pi-Cyclopentadienyldicarbonylcobalt
DICARBONYLCYCLOPENTADIENYLCOBALT(I)
Dicarbonylcyclopentadienylcobalt,96%
Dicarbonylcyclopentadienyl cobalt(Ⅰ)
pi-Cyclopentadienylcobalt dicarbonyl
Dicarbonyl-pi-cyclopentadienyl cobalt
cyclopentadienyl cobalt(i) dicarbonyl
eta5-Cyclopentadienylcobalt dicarbonyl
Cobalt, dicarbonyl-pi-cyclopentadienyl-
Dicarbonyl(eta5-cyclopentadienyl)cobalt
DICARBONYLCYCLOPENTADIENYLCOBALT, TECH.
Cyclopentadienylcobaltdicarbonyl,min.95%
Cyclopentadienylcobalt dicarbonyl, min. 95%
dicarbonyl(eta5-2,4-cyclopentadien-1-yl)cobalt
Dicarbonylcyclopentadienyl cobalt(I) technical grade | [EINECS(EC#)]
235-139-8 | [Molecular Formula]
C7H5CoO2 5* | [MDL Number]
MFCD00009589 | [MOL File]
12078-25-0.mol | [Molecular Weight]
180.05 |
| Chemical Properties | Back Directory | [Appearance]
dark red to brown liquid | [Melting point ]
-22 °C
| [Boiling point ]
139-140 °C710 mm Hg(lit.)
| [density ]
1.35 | [refractive index ]
1.599-1.602
| [Fp ]
80 °F
| [storage temp. ]
2-8°C
| [form ]
liquid
| [color ]
dark red
| [Specific Gravity]
1.35 | [Water Solubility ]
Insoluble in water. Soluble in common organic solvents. | [Sensitive ]
Air Sensitive | [InChI]
InChI=1S/C5H5.2CO.Co/c1-2-4-5-3-1;2*1-2;/h1-5H;;; | [InChIKey]
HUSLGLMTBHLWKG-UHFFFAOYSA-N | [SMILES]
[CH]1[CH][CH][CH][CH]1.[O+]#[C-].[O+]#[C-].[Co] |^1:0,1,2,3,4| | [NIST Chemistry Reference]
Cobalt, dicarbonyl(«eta»5-2,4-cyclopentadien-1-yl)-(12078-25-0) |
| Hazard Information | Back Directory | [Chemical Properties]
dark red to brown liquid | [Description]
Cyclopentadienyl cobalt(I) dicarbonyl is a catalyst used in alkyne trimerisation and cotrimerisation. It can produce various cyclopentadienyl cobalt complexes, cyclopentadienyl ketones, pyridine ketones and other compounds. | [Uses]
Dicarbonylcyclopentadienylcobalt Catalyst for the cyclotrimerization of alkynes. It mediates the [2+2+2]-cyclization of allenediynes to tricyclic systems. catalyzes the formation of pyridines from a mixture of alkynes and nitriles. | [Uses]
Mediates the [2+2+2]-cyclization of allenediynes to tricyclic systems. | [Preparation]
Preparative Methods of Cyclopentadienyl cobalt(I) dicarbonyl: synthesized quantitatively from Octacarbonyldicobalt and Cyclopentadiene or from Bis(cyclopentadienyl)cobalt and Carbon Monoxide. | [reaction suitability]
core: cobalt
reagent type: catalyst | [storage]
somewhat air sensitive; toxic; best stored under CO or inert gas (N2, Ar) at low temperature (<0 °C) | [Purification Methods]
Best distilled in an atmosphere of CO in a vacuum. The red brown liquid decomposes slightly on distillation even in a vacuum to liberate some CO. Operations should be performed in an efficient fume cupboard. It is soluble in organic solvents and stable in air but decomposes slowly in sunlight and rapidly under UV. [Piper et al. J Inorg Nucl Chem 1 165 1955, Beilstein 16 IV 1827.] TOXIC. |
| Questions And Answer | Back Directory | [Reactions]
- Volatile cobalt complex used for the deposition of cobalt and cobalt oxide films.
- Intramolecular cobalt-catalyzed [2+2+2] cycloaddition of O-protected diyne-cycanohydrins.
- Catalyst used for the dehydrative direct CH allylation with allylic alcohols.
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