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245259

Sigma-Aldrich

Dicarbonylcyclopentadienyl cobalt(I)

technical grade

Synonym(s):

CpCo(CO)2, Cobalt dicarbonyl cyclopentadiene, Cyclopentadienyl cobalt(I) dicarbonyl, Cyclopentadienylcobalt dicarbonyl, Cyclopentadienyldicarbonylcobalt

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About This Item

Linear Formula:
C5H5Co(CO)2
CAS Number:
12078-25-0
Molecular Weight:
180.05
EC Number:
235-139-8
MDL number:
MFCD00009589
UNSPSC Code:
12161600
PubChem Substance ID:
24854737

grade

technical grade

Quality Level

100

form

liquid

reaction suitability

core: cobalt
reagent type: catalyst

bp

139-140 °C/710 mmHg (lit.)

storage temp.

2-8°C

SMILES string

[Co].[C-]#[O+].[C-]#[O+].[CH]1[CH][CH][CH][CH]1

InChI

1S/C5H5.2CO.Co/c1-2-4-5-3-1;2*1-2;/h1-5H;;;

InChI key

HUSLGLMTBHLWKG-UHFFFAOYSA-N

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Application

Catalyst for the cyclotrimerization of alkynes.
Mediates the [2+2+2]-cyclization of allenediynes to tricyclic systems.

accessory

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Carc. 2 - Flam. Liq. 3 - Muta. 2 - Repr. 2 - Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

80.6 °F - closed cup

Flash Point(C)

27 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Tetrahedron, 62, 10582-10582 (2006)
Room Temperature CpCo-Mediated Cyclization of alpha,delta,omega-Enediynes to Rearranging Strained Tricylic Dienes. Some Observations of Kinetic versus Thermodynamic Control.
J. Kevin Cammack et al.
The Journal of organic chemistry, 61(14), 4798-4800 (1996-07-12)
Dmitri V Konarev et al.
Dalton transactions (Cambridge, England : 2003), 49(46), 16821-16829 (2020-11-13)
The reduction of copper(ii) octafluoro- {CuII(F8Pc)} and hexadecafluorophthalocyanines {CuII(F16Pc)} by NaCpCo(CO)2 in the presence of cryptand[2.2.2] yields new crystalline {cryptand(Na+)}[CuII(F8Pc)˙3-]-·2C6H4Cl2 (1) and {cryptand(Na+)}2[CuII(F16Pc)4-]2-·C6H14 (2) salts. Together with two previously characterized salts of CuII(FxPc) (x = 8 and 16), this allows

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