Nickelocene

Nickelocene is the organonickel compound with the formula Ni(η5-C5H5)2. Also known as bis(cyclopentadienyl)nickel or NiCp2, this bright green paramagnetic solid is of enduring academic interest, although it does not yet have any known practical applications.

Nickelocene
Names
Preferred IUPAC name
Nickelocene
Other names
Bis(cyclopentadienyl) nickel(II)
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.672
EC Number
  • 215-039-0
3412
RTECS number
  • QR6500000
UNII
UN number 1325 3082
  • InChI=1S/2C5H5.Ni/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2
    Key: KZPXREABEBSAQM-UHFFFAOYSA-N
  • C1=C[CH-](C=C1).[Ni+2].[CH-](C=C2)C=C2
Properties
C10H10Ni
Molar mass 188.88 g/mol
Appearance Green crystals
Density 1.47 g/cm3
Melting point 171 to 173 °C (340 to 343 °F; 444 to 446 K)
insoluble
Structure
D5h, D5d
0 D
Hazards
GHS labelling:
Danger
H228, H302, H317, H350
P201, P202, P210, P240, P241, P261, P264, P270, P272, P280, P281, P301+P312, P302+P352, P308+P313, P321, P330, P333+P313, P363, P370+P378, P405, P501
NFPA 704 (fire diamond)
2
4
2
Lethal dose or concentration (LD, LC):
490 mg kg−1 (oral, rat)
600 mg kg−1 (oral, mouse)
Related compounds
Related compounds
 CoCp2, FeCp2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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