Showing 561 - 580 results of 227,758 for search '(( a step decrease ) OR ( 10 ((((we decrease) OR (nn decrease))) OR (a decrease)) ))', query time: 1.75s Refine Results
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    Nucleophilicity of Oximes Based upon Addition to a Nitrilium <i>closo</i>-Decaborate Cluster by Dmitrii S. Bolotin (1953220)

    Published 2016
    “…On the basis of kinetic data, Δ<i>H</i><sup>⧧</sup>, Δ<i>S</i><sup>⧧</sup>, and Δ<i>G</i><sup>⧧</sup> of the additions were determined, showing a 4 order-of-magnitude decrease in reactivity from the hydroxy­guanidine to the aromatic ketoxime as entering nucleophiles. …”
  10. 570

    Nucleophilicity of Oximes Based upon Addition to a Nitrilium <i>closo</i>-Decaborate Cluster by Dmitrii S. Bolotin (1953220)

    Published 2016
    “…On the basis of kinetic data, Δ<i>H</i><sup>⧧</sup>, Δ<i>S</i><sup>⧧</sup>, and Δ<i>G</i><sup>⧧</sup> of the additions were determined, showing a 4 order-of-magnitude decrease in reactivity from the hydroxy­guanidine to the aromatic ketoxime as entering nucleophiles. …”
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    Ab Initio Prediction of Proton Exchange Barriers for Alkanes at Brønsted Sites of Zeolite H‑MFI by Marcin Rybicki (6077435)

    Published 2018
    “…A change to the indirect proton exchange mechanism, in which a hydride ion is transferred between the alkane and a <i>tert</i>-butyl carbenium ion can be excluded, because we confirm previous findings that the barrier for dehydrogenation that would create a <i>tert</i>-butyl cation from <i>i</i>-butane is much too high, 188 and 132 kJ/mol for the intrinsic and apparent enthalpy barriers, respectively, at 500 K. …”
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    Elementary Steps in Olefin Metathesis: Nickelacyclobutanes via Cycloaddition to Nickel Carbenes by Samantha K. Cormier (16872384)

    Published 2025
    “…This is the sole example to date of an obervable NiCB generated via cycloaddition, beyond the fluorinated examples. Computations pinpoint a decreased energy barrier to cycloreversion, relative to reductive elimination or β-H elimination, as the core requirement to achieve metathesis. …”
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