Related Experiment Video
Updated: May 28, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
Late-metal nitrosyl cations: synthesis and reactivity of [Ni(NO)(MeNO2)3][PF6]
Ashley M Wright1, Guang Wu, Trevor W Hayton
1Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States.
Abstract:
The reaction of [NO][PF(6)] with excess Ni powder in CH(3)NO(2), in the presence of 2 mol % NiI(2), results in the formation of [Ni(NO)(CH(3)NO(2))(3)][PF(6)] (1), which can be isolated in modest yield as a blue crystalline solid. Also formed in the reaction is [Ni(CH(3)NO(2))(6)][PF(6)](2) (2), which can be isolated in comparable yield as a pale-green solid. In the solid state, 1 exhibits tetrahedral geometry about the Ni center with a linear nitrosyl ligand [Ni1-N1-O1 = 174.1(8)°] and a short Ni-N bond distance [1.626(6) Å]. As anticipated, the weakly coordinating nitromethane ligands in 1 are easily displaced by a variety of donors, including Et(2)O, MeCN, and piperidine (NC(5)H(11)). More surprisingly, the addition of mesitylene to 1 results in the formation of an η(6)-coordinated nickel arene complex, [Ni(η(6)-1,3,5-Me(3)C(6)H(3))(NO)][PF(6)] (6). In the solid state, complex 6 exhibits a long Ni-C(cent) distance [1.682(2) Å], suggesting a relatively weak Ni-arene interaction, a consequence of the strong π-back-donation to the nitrosyl ligand. The addition of anisole to 1 also results in the formation of a η(6) nickel arene complex, [Ni(η(6)-MeOC(6)H(5))(NO)][PF(6)] (7). This complex also exhibits a long Ni-C(cent) distance [1.684(1) Å].
More Related Videos
Related Concept Videos
2° Amines to N-Nitrosamines: Reaction with NaNO2
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by water loss...
Electrophilic Aromatic Substitution: Nitration of Benzene
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism
Formation of Complex Ions
Nitriles to Amines: LiAlH4 Reduction
As shown below, the mechanism involves three steps. Firstly, the hydride ion acting as a nucleophile attacks the nitrile carbon to form an anion. In the second step, a second equivalent of the hydride ion attacks the anion to...

