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Sigma-Aldrich

Bis(cyclopentadienyl)cobalt(II)

Synonym(s):

Cobaltocene

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About This Item

Linear Formula:
Co(C5H5)2
CAS Number:
1277-43-6
Molecular Weight:
189.12
EC Number:
215-061-0
MDL number:
MFCD00013749
UNSPSC Code:
12352103
PubChem Substance ID:
24860617
NACRES:
NA.23

form

powder or crystals
solid

Quality Level

100

reaction suitability

core: cobalt

mp

176-180 °C (dec.) (lit.)

storage temp.

2-8°C

SMILES string

[Co].[CH]1[CH][CH][CH][CH]1.[CH]2[CH][CH][CH][CH]2

InChI

1S/2C5H5.Co/c2*1-2-4-5-3-1;/h2*1-5H;

InChI key

PXFGMRZPRDJDEK-UHFFFAOYSA-N

General description

Bis(cyclopentadienyl)cobalt(II) also known as cobaltocene, is an organometalliccompound that is widely used in the field of polymer synthesis, cobaltnanomaterials, and redox flow batteries.

Application

Bis(cyclopentadienyl)cobalt(II) can be used:
  • As a dopant to prepare encapsulated carbon nanotubes with high thermoelectric conversion efficiency.
  • As a CVD precursor to fabricate cobalt oxide thin films for various applications.
  • As a redox-active anode species in Li-based redox flow batteries to achieve higher energy densities and energy efficiencies.
  • As a catalyst for controlled/“living” radical polymerization of methylmethacrylate.

Pictograms

FlameHealth hazard
GHS02,GHS08

Signal Word

Danger

Hazard Statements

H228,H317,H334,H341,H351

Hazard Classifications

Carc. 2 - Flam. Sol. 2 - Muta. 2 - Resp. Sens. 1 - Skin Sens. 1

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCP3743
MKCL9942
MKCH4593
MKCF9857
MKCF5294

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Patrick P Komane et al.
International journal of molecular sciences, 21(7) (2020-03-29)
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Journal of the American Chemical Society, 140(42), 13753-13763 (2018-09-27)
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