60811

Sigma-Aldrich

Cobalt carbonyl

moistened with hexane (hexane 1-10%), ≥90% (Co)

Synonym(s):
Di-μ-carbonylhexacarbonyldicobal, Octacarbonyldicobalt, Dicobalt octacarbonyl, Cobalt tetracarbonyl dimer
Linear Formula:
Co2(CO)8
CAS Number:
Molecular Weight:
341.95
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

≥90% (Co)

quality

moistened with hexane (hexane 1-10%)

reaction suitability

core: cobalt
reagent type: catalyst

storage temp.

2-8°C

SMILES string

[Co++].[Co++].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+]

InChI

1S/8CO.2Co/c8*1-2;;/q;;;;;;;;2*+2

InChI key

MQIKJSYMMJWAMP-UHFFFAOYSA-N

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Application

  • Cobalt carbonyl [Co2(CO)8] is commonly used as a catalyst in the hydroformylation (oxo reaction) of alkenes.
  • Along with pyridine, it can be used as a catalyst in the carboxylation of alkenes into corresponding acids and esters.
  • It is employed as a key precursor in the preparation of cobalt platinum (CoPt3), cobalt sulfide (Co3S4) and cobalt selenide (CoSe2) nanocrystals.
  • It is also used as a reagent in Pauson-Khand cyclizations and Nicholas reaction.

Packaging

5, 25 g in glass bottle

Signal Word

Danger

Target Organs

Nervous system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN 3190 4.2 / PGII

WGK Germany

WGK 3

Flash Point(F)

-9.4 °F

Flash Point(C)

-23 °C

Certificate of Analysis

Certificate of Origin

A Lewis acid-mediated version of the Nicholas reaction: Synthesis of syn-alkylated products and cobalt-complexed cycloalkynes.
Schreiber SL, et al.
Journal of the American Chemical Society, 108(11), 3128-3130 (1986)
Octacarbonyldicobalt.
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 1-26 (2014)
In situ free-surfactant synthesis and ORR-electrochemistry of carbon-supported Co3S4 and CoSe2 nanoparticles.
Feng Y, et al.
Chemistry of Materials, 20(1), 26-28 (2007)
Dicobalt octacarbonyl.
Fischer S.
Synlett, 2002(09), 1558-1559 (2002)
N-oxide promoted Pauson-Khand cyclizations at room temperature.
Shambayani S, et al.
Tetrahedron Letters, 31(37), 5289-5292 (1990)
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