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Topic summary

Chromocene

Chromocene
Names IUPAC name
Chromocene
Systematic IUPAC name
Bis(η-cyclopentadienyl)chromium(II)
Other names
Dicyclopentadienylchromium(II)
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard100.013.670EC Number
  • 215-036-4
3366
RTECS number
  • GB7600000
UNII
UN number1325
  • InChI=1/2C5H5.Cr/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2
    Key: TYYBBNOTQFVVKN-UHFFFAOYAS
  • [Cr+2].[cH-]1cccc1.c1[cH-]ccc1
Properties C10H10CrMolar mass182.186 g·mol Appearance dark red crystals Density1.43 g/cm Melting point168 to 170 °C (334 to 338 °F; 441 to 443 K) Boiling pointSublimes (under vacuum) Insoluble Structure Pseudooctahedral
see Ferrocene0 DHazards Occupational safety and health (OHS/OSH):
Main hazards
Pyrophoric GHS labelling: DangerH302, H312, H314, H315, H317, H319, H332, H335NFPA 704 (fire diamond)
1
0
0
Related compounds
Related compounds
Fe(C5H5)2
Ni(C5H5)2
bis(benzene)chromium
chromium(II) acetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Chromocene is the organochromium compound with the formula [Cr(C5H5)2]. Like structurally related metallocenes, chromocene readily sublimes in a vacuum and is soluble in non-polar organic solvents. It is more formally known as bis(η-cyclopentadienyl)chromium(II).

Wikipedia source