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Discussion

Science Preparation for Engineering Entrance
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Which of the following singlet carbene is most stable? CH2 , CHF , CF2, CCl2

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Mitesh

CHF>CF2>CCI2>CH2

Mitesh

CHF>CF2>CCI2>CH2

Peddada Ram Sandeep

CF2>CCl2>CHF>CH2..

Abhishek

Order of stability of singlet carbene is given as follows for dihalides CF2> CCl2> CBr2>CI2 this shows that singlet carbene acts as elctron efficient species and electron withdrawing group or atoms increase its stability hence the order for these must be as follows CF2>CCl2>CHF>CH2...