1346264-84-3Relevant academic research and scientific papers
Late-metal nitrosyl cations: Synthesis and reactivity of [Ni(NO)(MeNO 2)3][PF6]
Wright, Ashley M.,Wu, Guang,Hayton, Trevor W.
, p. 11746 - 11753 (2011)
The reaction of [NO][PF6] with excess Ni powder in CH 3NO2, in the presence of 2 mol % NiI2, results in the formation of [Ni(NO)(CH3NO2)3][PF 6] (1), which can be isolated in modest yield as a blue crystalline solid. Also formed in the reaction is [Ni(CH3NO2) 6][PF6]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) A]. As anticipated, the weakly coordinating nitromethane ligands in 1 are easily displaced by a variety of donors, including Et2O, MeCN, and piperidine (NC5H11). More surprisingly, the addition of mesitylene to 1 results in the formation of an η6-coordinated nickel arene complex, [Ni(η6-1,3,5-Me3C 6H3)(NO)][PF6] (6). In the solid state, complex 6 exhibits a long Ni-Ccent distance [1.682(2) A], 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 η6 nickel arene complex, [Ni(η6-MeOC6H5)(NO)][PF6] (7). This complex also exhibits a long Ni-Ccent distance [1.684(1) A].
