Cyclopentadienyl nickel nitrosyl

Cyclopentadienyl nickel nitrosyl is an organonickel compound with the formula (C₅H₅)NiNO. It is a diamagnetic, volatile, relatively air-stable red liquid. It has been reported to be the simplest mono-cyclopentadienyl metal complex. It is prepared by treating nickelocene with nitric oxide. Its toxicity is said to be comparable to nickel tetracarbonyl. The complex has C_5v symmetry.

The compound reacts with lithium aluminium hydride to give the paramagnetic cluster (C₅H₅)₄Ni₄H₃.

The related pentamethylcyclopentadienyl complex (C₅(CH₃)₅)NiNO is also known.

Cyclopentadienyl nickel nitrosyl was the subject of several patents as a fuel additive.

See also

• Cyclopentadienyl
• Cyclopentadienyl complex
• Cyclopentadiene

References

1. Nickelocene
2. Molecular symmetry
3. IUPAC nomenclature of inorganic chemistry 2005
4. Glossary of chemical formulae
5. Dimanganese decacarbonyl
6. Ligand