12078-25-0 Usage
Description
Dicarbonylcyclopentadienylcobalt, also known as cobalt carbonyl or cobaltocene, is a homogeneous transition metal catalyst with the chemical formula (C5H5)Co(CO)2. It is a dark red to brown liquid that exhibits unique catalytic properties, making it a versatile compound in various chemical reactions.
Uses
Used in Chemical Synthesis:
Dicarbonylcyclopentadienylcobalt is used as a catalyst for the cyclotrimerization of alkynes, a process that involves the formation of cyclic compounds from three alkyne molecules. This catalyst plays a crucial role in the synthesis of various organic compounds, including heterocycles and complex organic structures.
Used in Allenediynes Cyclization:
In the field of organic chemistry, dicarbonylcyclopentadienylcobalt is used as a catalyst for the [2+2+2]-cyclization of allenediynes to form tricyclic systems. This reaction is an important method for constructing complex molecular frameworks and has applications in the synthesis of natural products and pharmaceuticals.
Used in Pyridine Formation:
Dicarbonylcyclopentadienylcobalt also catalyzes the formation of pyridines from a mixture of alkynes and nitriles. Pyridines are a class of heterocyclic compounds with a six-membered nitrogen-containing ring, which are widely found in natural products, pharmaceuticals, and agrochemicals. The catalytic process facilitated by dicarbonylcyclopentadienylcobalt allows for the efficient synthesis of these valuable compounds.
Overall, dicarbonylcyclopentadienylcobalt is a valuable catalyst in the field of organic chemistry, with applications in the synthesis of various complex organic compounds, including tricyclic systems and pyridines. Its unique catalytic properties make it an essential tool for chemists in both academic and industrial settings.
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.
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.
Check Digit Verification of cas no
The CAS Registry Mumber 12078-25-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,7 and 8 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 12078-25:
(7*1)+(6*2)+(5*0)+(4*7)+(3*8)+(2*2)+(1*5)=80
80 % 10 = 0
So 12078-25-0 is a valid CAS Registry Number.
12078-25-0Relevant articles and documents
METHOD OF SELECTIVELY FORMING COBALT METAL LAYER BY USING COBALT COMPOUND, AND METHOD OF FABRICATING SEMICONDUCTOR DEVICE BY USING COBALT COMPOUND
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Paragraph 0157-0161, (2021/02/05)
A method of selectively forming a cobalt metal layer includes supplying a cobalt compound represented by Chemical Formula (1) onto a substrate that includes a wiring line of a late transition metal and an isolation film adjacent thereto, and supplying a reducing gas to selectively form a cobalt metal layer on the wiring line,
Reactions of early-late heterobimetallics with oxiranes: New examples for cooperative reactivity
Sisak, Attila,Halmos, Erzsébet
, p. 1817 - 1824 (2008/02/04)
In the reaction of oxiranes and cobalt-containing early-late heterobimetallic (ELHB) compounds isolated or prepared in situ, acyl-cobalt complexes, Y3MEOCHRCH2C(O)Co(CO)4 (1, ME = Ti, Zr, Hf), were ob
Facial coordination of cyclooctatetraene to a Co2Ni triangle in a heterometallic trinuclear cluster complex
Wadepohl, Hubert,Gebert, Stefan,Merkel, Rüdiger,Pritzkow, Hans
, p. 142 - 147 (2007/10/03)
Reaction of [(η-C5H5)NiCo3(CO)9] (5) with 1,3,5,7-cyclooctatetraene or 1,4-(SiMe3)2C8H6, respectively, yields the complexes [Co2Ni(CO)6(μ3/