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

signalword

Danger

hazcat

Acute Tox. 1 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Carc. 2 - Repr. 2 - Self-heat. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation

Target Organs

Nervous system

storage_class_code

4.2 - Pyrophoric and self-heating hazardous materials

WGK Germany

WGK 3

Flash Point F

-9.4 °F

Flash Point C

-23 °C

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

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)
M Varón et al.
Scientific reports, 3, 1234-1234 (2013-02-08)
Magnetostatic (dipolar) interactions between nanoparticles promise to open new ways to design nanocrystalline magnetic materials and devices if the collective magnetic properties can be controlled at the nanoparticle level. Magnetic dipolar interactions are sufficiently strong to sustain magnetic order at...
Octacarbonyldicobalt.
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 1-26 (2014)
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)
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