| DICARBONYLCYCLOPENTADIENYLCOBALT Basic information |
| Reactions |
| Product Name: | DICARBONYLCYCLOPENTADIENYLCOBALT |
| 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 |
| DICARBONYLCYCLOPENTADIENYLCOBALT 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 |
| NIST Chemistry Reference | Cobalt, dicarbonyl(«eta»5-2,4-cyclopentadien-1-yl)-(12078-25-0) |
| Safety Information |
| 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 |
| MSDS Information |
| Provider | Language |
|---|---|
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| DICARBONYLCYCLOPENTADIENYLCOBALT Usage And Synthesis |
| Reactions |
|
| 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. |
| Uses | Mediates the [2+2+2]-cyclization of allenediynes to tricyclic systems. |
| 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. |
| DICARBONYLCYCLOPENTADIENYLCOBALT Preparation Products And Raw materials |
| Raw materials | 1,2,3,4-tetrahydrophthalazine-->carbon monoxide-->Cobalt chloride-->1,3-Cyclopentadiene |
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