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Question
Which of the following has the minimum heat of dissociation?
Which of the following has the minimum heat of dissociation?
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Solution
The correct option is D [(CH3)3 N → B(CH3)3]
Solution: The tendency of trimethyl boron to act as Lewis acid decreases due to +I effect of alkyl groups and therefore the coordinate bond strength decreases which is responsible for the lower heat of dissociation in option (d).
[(CH3)3 N → B(CH3)3]
Solution: The tendency of trimethyl boron to act as Lewis acid decreases due to +I effect of alkyl groups and therefore the coordinate bond strength decreases which is responsible for the lower heat of dissociation in option (d).
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(b)
(c)
