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| | Cyclopentadienyl cobalt(I) dicarbonyl Basic information | | Reactions |
| Product Name: | Cyclopentadienyl cobalt(I) dicarbonyl | | Synonyms: | Cobalt cyclopentadienyl dicarbonyl;Cobalt, dicarbonyl-pi-cyclopentadienyl-;Cyclopentadienyldicarbonylcobalt;Dicarbonyl(eta5-cyclopentadienyl)cobalt;Dicarbonyl-pi-cyclopentadienyl cobalt;eta5-Cyclopentadienylcobalt dicarbonyl;pi-Cyclopentadienylcobalt dicarbonyl;pi-Cyclopentadienyldicarbonylcobalt | | CAS: | 12078-25-0 | | MF: | C7H5CoO25* | | MW: | 180.05 | | EINECS: | 235-139-8 | | Product Categories: | metallocene | | Mol File: | 12078-25-0.mol |  |
| | Cyclopentadienyl cobalt(I) dicarbonyl Chemical Properties |
| 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 Codes | T | | Risk Statements | 10-23/24/25-42/43-53-68-40 | | Safety Statements | 23-36/37-45-38-36/37/39-28A-16 | | RIDADR | UN 1992 3/PG 3 | | WGK Germany | 3 | | F | 10-23 | | HazardClass | 6.1 | | PackingGroup | II | | HS Code | 29319090 | | Storage Class | 3 - Flammable liquids | | Hazard Classifications | Acute Tox. 2 Dermal
Acute Tox. 3 Inhalation
Acute Tox. 3 Oral
Carc. 2
Flam. Liq. 3
Muta. 2
Repr. 2
Resp. Sens. 1
Skin Sens. 1 |
| | Cyclopentadienyl cobalt(I) dicarbonyl Usage And Synthesis |
| 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.
| | 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. | | Chemical Properties | dark red to brown liquid | | 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. | | 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. |
| | Cyclopentadienyl cobalt(I) dicarbonyl Preparation Products And Raw materials |
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