bis(η5-2,4-cyclopentadien-1-yl)nickel

Independent reference data for bis(η5-2,4-cyclopentadien-1-yl)nickel (CAS 1271-28-9), compiled from public chemistry databases.

Registry identifiers across databases

Computed descriptors

Physicochemical values on record

Documented uses on record

Used as a catalyst and complexing agent; [Hawley]Also known as bis(cyclopentadienyl)nickel or NiCp2, this bright green paramagnetic solid is found abundantly in nature in laterite ore minerals, such as limonite, garnierite, and pentlandite. Nickel has a biological role and is found in certain enzymes, including urease, hydrogenase, methylcoenzyme M reductase, and carbon monoxide dehydrogenase.

Synonyms and trade names

Nickelocene; 1271-28-9; Nikelocen [Czech]; Nikelocen; Bis(eta5-2,4-cyclopentadien-1-yl)nickel; Nickel biscyclopentadiene; CCRIS 430; Bis(cyclopentadienyl)nickel(II); Di-pi-cyclopentadienylnickel; EINECS 215-039-0; JR8F745XV5; Bis(cyclopentadienyl)nickel; Nickel, compd with pi-cyclopentadienyl (1:2); BIS(CYCLOPENTADIENYL) NICKEL(II); Dipicyclopentadienylnickel; RefChem:854087

GHS hazard classification

Reported hazard statements	H228 (91.7%), H302 (97.9%), H317 (97.9%), H350 (95.8%)

H228 (91.7%): Flammable solid [Danger Flammable solids]

H302 (97.9%): Harmful if swallowed [Warning Acute toxicity, oral]

What the public record says

bis(η5-2,4-cyclopentadien-1-yl)nickel · CAS 1271-28-9 · C10H10Ni. UNII JR8F745XV5. Melting Point: 340 to 343 °F (NTP, 1992).

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.