0244Pb9an-10.cwk (WP)

0244Pb9an-10.cwk (WP) - The fluoroborate salt is better...

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Answer to Problem 9 - Chemistry 0244 - 2010 Ion 1 is exactly what you encountered when you dealt with the MO picture of cyclopropenyl. It is also comparable to cyclic H 3 + and the transition state for 1,2-hydride shifts in carbocations. The MO picture looks like this: 1 = Energy As only the lowest, bonding MO is occupied, the species is quite stable.
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Unformatted text preview: The fluoroborate salt is better than the bromide because – BF 4 is not a nucleophile (draw a Lewis dot structure). Nucleophilic counterions are all-too-prone to add to the cation to make unstable covalent compounds....
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This note was uploaded on 03/02/2010 for the course CHEM orgo taught by Professor Jones during the Spring '10 term at NYU.

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