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what is the order of stability of the given compound Ch2: Ch3Ch: C6h5Ch: (C6h5)2Ch: where 'c:'indicate a carbene Recpected sir please give it answer with details and thanks for answering my last question

what is the order of stability of the given compound Ch2: Ch3Ch: C6h5Ch: (C6h5)2Ch: where 'c:'indicate a carbene Recpected sir please give it answer with details and thanks for answering my last question

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1 Answers

vikas askiitian expert
509 Points
10 years ago

dear praveen,

stablity of carbene is governed by two effects ,

1)hyperconjugation

2)resonance

structure in which resonance is possible will have greater stablity ...

structure having more resonating structure will have more stablity...

those in which resonance is not possible , calculate no of alfa hybrogens for assymetric carbon(c:) ....more no of alfa H's more will  the stablity ...

(C6H5)2C:  (7 resonating structure)    >    (C6H5)C:H  (4 resonating structure)                

CH3C:H     (3 alfa hydrogens)           >    C:H2             (0 alfa hydrogens)

stablity order :      (C6H5)2C: >  (C6H5)C:H > CH3C:H > C:H2

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