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60811

Sigma-Aldrich

Cobalt carbonyl

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

Synonym(s):

Cobalt tetracarbonyl dimer, Di-μ-carbonylhexacarbonyldicobal, Octacarbonyldicobalt, Dicobalt octacarbonyl

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About This Item

Linear Formula:
Co2(CO)8
CAS Number:
10210-68-1
Molecular Weight:
341.95
MDL number:
MFCD00016024
UNSPSC Code:
12161600
PubChem Substance ID:
57651787
NACRES:
NA.22

Assay

≥90% (Co)

form

solid

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.

Signal Word

Danger

Hazard Classifications

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

WGK 3

Flash Point(F)

-9.4 °F

Flash Point(C)

-23 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
Eirini Zacharaki et al.
Chemistry Central journal, 10, 10-10 (2016-03-10)
Reproducible growth of narrow size distributed ε-Co nanoparticles with a specific size requires full understanding and identification of the role of essential synthesis parameters for the applied synthesis method. For the hot injection methodology, a significant discrepancy with respect to
Dicobalt octacarbonyl.
Fischer S.
Synlett, 2002(09), 1558-1559 (2002)
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