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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:
Molecular Weight:
341.95
MDL number:
UNSPSC Code:
12161600
PubChem Substance ID:
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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

FSL

Group 2: Flammable solids
Flammable solid
Hazardous rank III

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

60811-25G:4548173944647
60811-VAR:
60811-5G:4548173944654
60811-BULK:


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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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)
Octacarbonyldicobalt.
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 1-26 (2014)
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
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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