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Topic summary

Nickelocene

Nickelocene
Nickelocene freshly depositied on a cold finger
Names Preferred IUPAC name
Nickelocene
Other names
Bis(cyclopentadienyl) nickel(II)
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard100.013.672EC Number
  • 215-039-0
3412
RTECS number
  • QR6500000
UNII
UN number1325 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 mass188.88 g/mol Appearance Green crystals Density1.47 g/cm Melting point171 to 173 °C (340 to 343 °F; 444 to 446 K) insoluble Structure D5h, D5d0 DHazards GHS labelling: DangerH228, H302, H317, H350P201, P202, P210, P240, P241, P261, P264, P270, P272, P280, P281, P301+P312, P302+P352, P308+P313, P321, P330, P333+P313, P363, P370+P378, P405, P501NFPA 704 (fire diamond)
2
4
2
Lethal dose or concentration (LD, LC): 490 mg kg (oral, rat)
600 mg kg (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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Nickelocene is the organonickel compound with the formulaNi(η-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.

Wikipedia source