Differences in electronic properties of fluorinated and trifluoromethylated fullerenes revealed by their propensity for dianion formation
2006
The cross sections for electron transfer from sodium to C60Fn− and C60(CF3)n− anions in 50-keV collisions as a function of the number of functional groups n are reported. There are clear differences between derivatives of fluorine and trifluoromethyl due to the different electron withdrawing properties of F and CF3. The role of inductive effects and π electron delocalization on the electron affinity is discussed, assuming a correlation between the cross section and the electron affinity of the anion.
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