Methyl anion, electrostatic potential

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. 

Examine atomic charges and the electrostatic potential nu for nitrite anion. Which atom(s) is most electron riel Which product would be obtained if this atom behav as a nucleophile in its reation with methyl bromide. 

A comparison of methyl, vinylic, and acetylide anions. The acetylide anion, with sp hybridization, has more s character and is more stable. Electrostatic potential maps show that placing the negative charge closer to a carbon nucleus makes carbon appear less negative (red). 

Use SpartanView to compare electrostatic potential maps of styrene, 2-methyl-propene, 2-propenal, and nitroethylene. Which alkenes look like they would make good substrates for anionic polymerization For cationic polymerization Explain. 

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