Successive Chemical Reactions Accompanying a One-Electron Oxidation of a {MNO}6-Type Nitrosyl Complex, Pentachloro(nitrosyl)ruthenate(2−), and a Characterization of the Product Species
摘要:
A one-electron oxidation species of the title complex, [Ru(NO)Cl5]−({RuNO}5-type nitrosyl complex), converted into cis-[Ru(NO)Cl4(CH3CN)]−({RuNO}6-type nitrosyl complex) at low temperature (5 °C) in the dark. The product species could be isolated and characterized. An X-ray structure determination showed a remarkably short N–O bond distance of the Ru–NO moiety: l(N–O) = 0.998 Å, l(Ru–N) = 1.787(5) Å, ∠Ru–N–O = 175.1(6)°. Under room light at 25 °C, the complex underwent a facile nitrosyl photoelimination to give trans-[RuCl4(CH3CN)2]−, the structure of which was also established. During the course of the reactions, two other unidentified species were confirmed to exist by cyclic voltammetry.
Successive Chemical Reactions Accompanying a One-Electron Oxidation of a {MNO}6-Type Nitrosyl Complex, Pentachloro(nitrosyl)ruthenate(2−), and a Characterization of the Product Species
摘要:
A one-electron oxidation species of the title complex, [Ru(NO)Cl5]−({RuNO}5-type nitrosyl complex), converted into cis-[Ru(NO)Cl4(CH3CN)]−({RuNO}6-type nitrosyl complex) at low temperature (5 °C) in the dark. The product species could be isolated and characterized. An X-ray structure determination showed a remarkably short N–O bond distance of the Ru–NO moiety: l(N–O) = 0.998 Å, l(Ru–N) = 1.787(5) Å, ∠Ru–N–O = 175.1(6)°. Under room light at 25 °C, the complex underwent a facile nitrosyl photoelimination to give trans-[RuCl4(CH3CN)2]−, the structure of which was also established. During the course of the reactions, two other unidentified species were confirmed to exist by cyclic voltammetry.
Electrochemical one-electron oxidation of [Ru(NO)Cl<sub>5</sub>]<sup>2–</sup>: spectroscopic and magnetic evidence for the (t<sub>2g</sub><sup>5</sup>) ruthenium (<scp>III</scp>) pentachloronitrosyl complex monoanion [Ru(NO)Cl<sub>5</sub>]<sup>–</sup>
作者:Vyvyan T. Coombe、Graham A. Heath、T. Anthony Stephenson、Derek A. Tocher
DOI:10.1039/c39830000303
日期:——
Voltammetric measurements establish a reversible one-electron oxidation for [Ru(NO)Cl5]2â in CH2Cl2; the i.r. and e.s.r. spectra and magnetic properties of the electrogenerated deep green product are consistent with low- spin [Ru(NO)Cl5]â, and quit different from the properties recently attributed to this anion.