Solveeit Logo
Login

Question

Chemistry Question on Structural Representations Of Organic Compounds

Polarisation of electrons in acrolein may be written as

A

CH2=CH−δ+ CH=O           δ−^{\delta+}_{CH_2 =CH -}\, ^{ \, \, \, \, \, \, \, \, \, \, \, \delta-}_{CH=O}

B

CH2=δ+ CH−CH=Oδ+^{\delta+}_{CH_2 =}\, ^{ \delta+}_{CH-CH=O}

C

CH2=CH−δ+ CH=O           δ+^{\delta+}_{CH_2 =CH -}\, ^{ \, \, \, \, \, \, \, \, \, \, \, \delta+}_{CH=O}

D

CH2=CH−δ− CH=Oδ+^{\delta-}_{CH_2 =CH -}\, ^{\delta+}_{CH=O}

Answer

CH2=CH−δ+ CH=O           δ−^{\delta+}_{CH_2 =CH -}\, ^{ \, \, \, \, \, \, \, \, \, \, \, \delta-}_{CH=O}

Explanation

Solution

In CH2=CH−CHOCH_2 = CH-CHO due to - M-effect of -CHO group, polarisation of electron takes place as follows:
Hence, partial polarisation is represented as \hspace20mm CH2=CH−   δ+ CH=O           δ−^{\, \, \, \delta+}_{CH_2 =CH -}\, ^{\, \, \, \, \, \, \, \, \, \, \, \delta-}_{CH=O}