Rydberg Electron Transfer

Rydberg charge exchange reactions with CS2 show another most unusual feature. Carmen et al. reported a pronounced isotope effect in the Rydberg electron transfer reaction between Rb and and For a narrow range of ( near = 17, the rate constant... 

Figure 12, Schematic diagram of Rydberg electron transfer experimental apparatus.

The Rydberg Electron Transfer technique (RET) has proven to be an excellent method for selectively producing fragile ground state dipole-bound... 

Figure 23, Time of Flight Mass Spectrum obtained for Cn ions produced by Rydberg electron transfer from the 30d state of Rb to Cn neutrals.

Rydberg electron transfer spectroscopy (RET) results due to Periquet et al. (2000). 

Keywords electron-capture dissociation electron-transfer dissociation electron transfer Rydberg orbital Landau-Zener theory... 

If the electron enters a Rydberg orbital on one of the protonated amine sites, in addition to undergoing a cascade of radiative or non-radiative relaxation steps to lower-energy Rydberg states, it can subsequently undergo intra-peptide electron transfer to either an SS cr or an OCN n orbital after which disulfide or N-Cr, bond cleavage can occur [3r,3u-3w]. 

Because ETD and ECD experiments are carried out at or near room temperature, the SS and N-Ca bonds are expected to sample only distances close to their equilibrium values Rc. Hence, we focus primarily on the Rydberg states having energies close to that of the SS a -attached or OCN Ji -attached state near Rc when considering intra-peptide electron transfer. In Figure 3, this would be the highest Rydberg state shown. 

In summary, ETD and ECD processes involve two kinds of electron-transfer events. The first occurs in the initial capture of an electron by the positively charged polypeptide. The second involves intra-peptide electron transfer from a Rydberg orbital residing on a positively charged site to an SS or OCN bond site. 

In the cases treated in the present paper, we do not have a reorganization energy because, for example as shown in Figures 5 and 10, the two diabatic states between which electron transfer occurs (e.g., the SS a and excited-Rydberg states) cross so close (i.e., within the zero-point vibrational motion of the SS bond) to the minimum on the Rydberg-state surface as to render A essentially zero. In more traditional electron-transfer events, A contains contributions from the... 

Barrier reactions Electron transfer Vander Waals reactions Rydberg reactions Exchange reactions Cleavage/addition Norrish reactions... 

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