Electrostatic potential maps propyl anion

Electrostatic potential map for pyramidal 2-methyl-2-propyl anion shows most negatively-charged regions (in red) and less negatively-charged regions (in blue). 

Compare electrostatic potential maps for planar and pyramidal forms of 2-methyl-2-propyl anion. For which is the negative charge more delocalized Is this the lower-energy structure For this case, does charge delocalization lead to stabilization Explain. 

Electrostatic potential maps for allyl and propyl anion. The charge is dispersed in allyl and shared equally by C-1 and C-3. The charge is localized at C-1 in propyl. The color scale is the same for both maps. 

The electrostatic potential maps in Figure 10.4 illustrate the greater dispersal of negative charge in allyl anion versus propyl anion. In addition to the stabilization that results from electron delocalization of the n electrons, C-2 of propene is sp hybridized, which increases the acidity of the allylic hydrogens by an electron-withdrawing inductive effect. 

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See also in sourсe #XX -- [ ]

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