What color is Cyclopentadienyl nickel nitrosyl?
Cyclopentadienyl nickel nitrosyl Cyclopentadienyl nickel nitrosyl is a blood-red color liquid. It was discovered by a team at The International Nickel Company. The molecular formula is (CH)NiNO. It can be prepared by treating nickelocene with nitric acid. It is extremely toxic (T+).
Nickel(II) precatalysts Nickel(II) precatalysts are a type of catalyst used in organic reactions. Many transformations are catalyzed by nickel in organometallic chemistry and in organic synthesis. Many of these transformations invoke a low valent (generally Ni(0)) species as the active catalyst. Unfortunately, unlike its counterpart, Pd(0), Ni(0) catalysts are predominantly confined to the glovebox due to their high instability to air and water, with the most common Ni(0) catalyst being Ni(cod). Additionally, Ni(cod) is more expensive than many Ni(II) salts and the quality varies significantly amongst suppliers. To make nickel catalysis more accessible and amenable to synthesis and industrial purposes, the use of air-stable Ni(II) precursors has emerged as an important development in this area of research. This page describes the more commonly employed nickel(II) precatalysts, their synthesis for those not commercially available, and the methods for their reduction to Ni(0) complexes.