what is reasonace effect
Answers
Resonance effect describes the polarity produced in a molecule by interaction between a lone pair electron and a pi bond or the interaction of two pi bonds in adjacent atoms. It is usually found in molecules with conjugated double bonds or in molecules having at least one lone pair and one double bond.
What is resonance effect?
Originally Answered: What is the Resonance effect?
Resonance effect describes the polarity produced in a molecule by interaction between a lone pair electron and a pi bond or the interaction of two pi bonds in adjacent atoms. It is usually found in molecules with conjugated double bonds or in molecules having at least one lone pair and one double bond. Understanding resonance is important in understanding stability of the compound and its energy state.
There are two types:
1.Positive Resonance Effect (+R effect)
When the transfer of electrons is away from an atom or substituent group attached to the conjugated system (presence of alternate single and double bonds in an open-chain or cyclic system) due to resonance, we call this effect as positive resonance effect. Some of the substituent groups which attribute to positive resonance effect are – COOH, –CHO, >C=O, – CN, –NO2, etc