Chromocene

Chromocene
Chromocene
Chromocene
Chromocene
Chromocene
Names
IUPAC name
Bis(η5-cyclopentadienyl)chromium(II)
Other names
Dicyclopentadienylchromium(II)
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.670 Edit this at Wikidata
EC Number
  • 215-036-4
3366
RTECS number
  • GB7600000
UNII
UN number 1325
  • 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
C10H10Cr
Molar mass 182.186 g·mol−1
Appearance dark red crystals
Density 1.43 g/cm3
Melting point 168 to 170 °C (334 to 338 °F; 441 to 443 K)
Boiling point Sublimes (under vacuum)
Insoluble
Structure
Pseudooctahedral
see Ferrocene
0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Pyrophoric
GHS labelling:
GHS02: FlammableGHS05: CorrosiveGHS07: Exclamation mark
Danger
H302, H312, H314, H315, H317, H319, H332, H335
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
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(η5-cyclopentadienyl)chromium(II).[1]

  1. ^ Crabtree, R. H. (2009). The Organometallic Chemistry of the Transition Metals (5th ed.). Hoboken, NJ: John Wiley and Sons. p. 2. ISBN 978-0-470-25762-3.