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Ultrafast Chemical Exchange Spectroscopy
Angol
240 b
30 nap a termék visszaküldésére
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The book discusses the methodology and experimental §setup of Ultrafst Chemical Exchange Spectroscopy in §details. Some application examples of the §new method are also included. The method has been §successfully applied to the study of fast chemical §exchange phenomena in liquid solutions at room §temperature. The formation and dissociation dynamics §of weak intermolecular interactions were monitored §in real time with the method. For interaction §enthalpies from -0.6 kcal/mol to -3.3 kcal/mol, the §dissociation time constants vary from 3 ps to 140 §ps. The dissociation rates of the interactions are §strongly correlated with their enthalpies. The §correlation can be described with an equation §similar to the Arrhenius equation. As another §example of chemical exchange spectroscopy, the rate §of carbon-carbon single bond rotational §isomerization of an ethane derivative in a room §temperature liquid solution is measured. Based on §the experimental results and density functional §theory calculations, the time constant for the §ethane internal rotational isomerization under the §same conditions is estimated to be ~12 ps.
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