Look at the four structures 1.Ethyl Acetate 2.Cyclohexanone 3.Acetophenone 4.N,N

Question

Look at the four structures 1.Ethyl Acetate 2.Cyclohexanone 3.Acetophenone 4.N,N-Dimethylformamidine (DMF) and ExplaiN why the wave number for the C=O shifts in theorder they are from left to right (highest to lowest). It already in order from 1 to 4 above, I know that number onemeans that is the most double bond like, I need help explaining why it is like that. A brief explain would be nice WILL RATE!!!! Look at the four structures 1.Ethyl Acetate 2.Cyclohexanone 3.Acetophenone 4.N,N-Dimethylformamidine (DMF) and ExplaiN why the wave number for the C=O shifts in theorder they are from left to right (highest to lowest). It already in order from 1 to 4 above, I know that number onemeans that is the most double bond like, I need help explaining why it is like that. A brief explain would be nice WILL RATE!!!!

Explanation / Answer

We Know that :

    The C=O str. increase due to thePresence of electron-withdrawing groups .

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