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339164

Sigma-Aldrich

Bis(cyclopentadienyl)cobalt(II)

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Synonym(s):
Cobaltocene
Linear Formula:
Co(C5H5)2
CAS Number:
Molecular Weight:
189.12
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

powder or crystals
solid

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

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This Item
339695N7524481165
mp

176-180 °C (dec.) (lit.)

mp

197 °C (dec.) (lit.)

mp

171-173 °C (lit.)

mp

154-156 °C (lit.)

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

-

reaction suitability

core: cobalt

reaction suitability

core: cobalt

reaction suitability

core: nickel, reagent type: catalyst

reaction suitability

core: aluminum, reagent type: catalyst

Quality Level

100

Quality Level

-

Quality Level

100

Quality Level

100

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

Signal Word

Danger

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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