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- W2083505587 abstract "The reaction of equimolar NO with the 16 electron molecule RuHCl(CO)L(2) (L = P(i)Pr(3)) proceeds, via a radical adduct RuHCl(CO)(NO) L(2), onward to form RuCl(NO)(CO)L(2) (X-ray structure determination) and RuHCl(HNO)(CO)L(2), in a 1:1 mole ratio. The HNO ligand, bound by N and trans to hydride, is rapidly degraded by excess NO. The osmium complex behaves analogously, but the adduct has a higher formation constant, permitting determination of its IR spectrum; both MHCl(CO)(NO)L(2) radicals are characterized by EPR spectroscopy, and DFT calculations on the Ru system show it to have a half-bent Ru-N-O unit with the spin density mainly on nitrogen. DFT (PBE) energies rule out certain possible mechanistic steps for forming the two products. A survey of the literature leads to the hypothesis that NO should generally be considered as a (neutral) Lewis base (2-electron donor) when it binds to a 16 electron complex which is resistant to oxidation or reduction, and that the resulting N-centered radical has a M-N-O angle of approximately 140 degrees, which distinguishes it from NO(-) (bent at <140 degrees ) and from NO(+) (>170 degrees )." @default.
- W2083505587 created "2016-06-24" @default.
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- W2083505587 date "2003-12-10" @default.
- W2083505587 modified "2023-09-23" @default.
- W2083505587 title "Reactivity of the Hydrido/Nitrosyl Radical MHCl(NO)(CO)(P<sup>i</sup>Pr<sub>3</sub>)<sub>2</sub>, M = Ru, Os" @default.
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- W2083505587 doi "https://doi.org/10.1021/ic0349407" @default.
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