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How does hyper conjugation effect explain the stability of alkenes? |
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Answer» Solution :(i)The relative stability of various clases of carbonium ions may be explained by the numberof no BOND resonance structures that can be written for them. (ii) Such structures are arrived by shifting the bonding ELECTRONS from an adjacent C-H bond to the electron deficient carbon. (iii) In this way, the positive charge originally on carbon is dispersed to the hydrogen. This manner of electron release by assuming no bond character in the adjaccentC-H bond is called hyper conjugation or Baker-Nathan effect. (IV) The greater the hyper conjugation, the greater will be the stability of the COMPOUND. The INCREASING order of stability can be shown as: `CH_3-CH=CH-CH_3 lt CH_3-underset(CH_3)underset(|)C=CH-CH_3 lt CH_3-underset(CH)underset(|)=underset(CH_3)underset(|)C-CH_3` (v) Alkyl group increases in the ` C=C` double bond carbon, hyper conjugation increases and stability of that organic compound also increases. |
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