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- W2062733706 abstract "The dissociative step of a dissociative, or D, substitution mechanism exhibits a volume of activation, ΔV1‡, which is independent of the nature of the incoming nucleophile. For the reaction of [Fe(CN)5(3,5Me2-py)]3–(3,5Me2-py = 3,5-dimethylpyridine) with [CN]–, ΔV1‡= 20.5 ± 0.8 cm3 mol–1; with pyrazine, ΔV1‡= 21.2 ± 1.0 cm3 mol–1; and with imidazole, ΔV1‡= 20.3 ± 1.0 cm3 mol–1. For the reaction of [Fe(CN)5(3CN-py)]3–(3CN-py = 3-cyano-pyridine) with [CN]–, ΔV1‡= 20.6 ± 0.5 cm3 mol–1. These volumes of activation are shown to correspond to stretching of the Fe–N bond in the activated complex from 65 to 88% of the distance corresponding to complete dissociation of the leaving group from the [Fe(CN)5]3– moiety." @default.
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- W2062733706 date "1977-01-01" @default.
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- W2062733706 title "Volumes of activation for dissociative (D) mechanisms: the substitution of pentacyanoferrate(II) complexes by various nucleophiles" @default.
- W2062733706 doi "https://doi.org/10.1039/dt9770001460" @default.
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