Interpretation:
The structural formula for the carbanion formed by addition of hydroxide ion to methyl-2-cyanoacrylate is to be drawn. This structural formula has to be accompanied by a contributing resonance structure that shows delocalization of the negative charge to oxygen, and another to nitrogen.
Concept introduction:
A way of describing the delocalized electrons present in certain molecules is termed as resonance.
The bonding in these cases cannot be expressed by a single Lewis structure. Efficient termination processes are absent in living
These processes are terminated by the addition of substances which react with carbanions.
For example: carbon dioxide or alcohol. In methyl-2-cyanoacrylate, a carbonyl group and a cyano group is attached to the same carbon.
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