TheInfoListRev V5.1.84
Xfr/

Topic summary

Cobaltocene

Cobaltocene
Names IUPAC names
Cobaltocene
Bis(η-cyclopentadienyl)cobalt
Other names
Cp2Co
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard100.013.692EC Number
  • 215-061-0
RTECS number
  • GG0350000
UNII
  • InChI=1S/2C5H5.Co/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2
    Key: ILZSSCVGGYJLOG-UHFFFAOYSA-N
  • InChI=1/2C5H5.Co/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2
    Key: ILZSSCVGGYJLOG-UHFFFAOYAM
  • [cH-]1cccc1.[cH-]1cccc1.[Co+2]
Properties [Co(η-C5H5)2] Molar mass189.12 g/mol Appearance Dark purple solid Melting point171–173 °C (340–343 °F; 444–446 K) Insoluble Structure sandwich zero Thermochemistry 236 J K mol +237 kJ/mol (uncertain) −5839 kJ/mol Hazards GHS labelling: DangerH228, H317, H334, H341, H351P210, P261, P280, P363, P405, P501NFPA 704 (fire diamond)
1
2
0
Related compounds
Related metallocenes
Ferrocene
Nickelocene
Rhodocene
Decamethylcobaltocene
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
X markNverify (  ?)

Cobaltocene, known also as bis(cyclopentadienyl)cobalt(II) or even "bis Cp cobalt", is an organocobalt compound with the formula Co(C5H5)2. It is a dark purple solid that sublimes readily slightly above room temperature. Cobaltocene was discovered shortly after ferrocene, the first metallocene. Due to the ease with which it reacts with oxygen, the compound must be handled and stored using air-free techniques.

Wikipedia source