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The total number of contributing structu...

The total number of contributing structures for hyperconjugation in propene is

A

3

B

4

C

5

D

2

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To find the total number of contributing structures for hyperconjugation in propene, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Structure of Propene**: Propene has the molecular formula C₃H₆ and its structure can be represented as: \[ \text{CH}_2= \text{CH}-\text{CH}_3 \] In this structure, we have a double bond between the first two carbon atoms. 2. **Identify the Hybridization**: - The first carbon (C1) and the second carbon (C2) are sp² hybridized. - The third carbon (C3) is sp³ hybridized. 3. **Identify Alpha-Hydrogens**: - Alpha-hydrogens are the hydrogens attached to the carbon atoms adjacent to the double bond (sp² hybridized carbons). - In propene, the alpha-hydrogens are those attached to C1 and C2. - C1 has 2 alpha-hydrogens (attached to C1) and C2 has 1 alpha-hydrogen (attached to C2). - Therefore, the total number of alpha-hydrogens = 2 (from C1) + 1 (from C2) = 3. 4. **Calculate the Number of Contributing Structures**: - The total number of contributing structures for hyperconjugation can be calculated using the formula: \[ \text{Number of hyperconjugation structures} = \text{Number of alpha-hydrogens} + 1 \] - Substituting the number of alpha-hydrogens: \[ \text{Number of hyperconjugation structures} = 3 + 1 = 4 \] 5. **Conclusion**: The total number of contributing structures for hyperconjugation in propene is **4**.
To find the total number of contributing structures for hyperconjugation in propene, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Structure of Propene**: Propene has the molecular formula C₃H₆ and its structure can be represented as: \[ \text{CH}_2= \text{CH}-\text{CH}_3 ...
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The total number of contributing structures showing hyperconjugation (involving C-H bonds) for the following carbocation is:

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Knowledge Check

  • Hyperconjugation is

    A
    `sigma-pi` conjugation
    B
    noticed due to delocalisation of `sigma and pi` bond
    C
    no bond resonance
    D
    all the above

  • The number of hyperconjugating structures shown by the carbocations are given below. WhJch one is not correctly matched ?

    A
    `CH_(3)-overset(+)underset(CH_(3))underset(|)C-CH_(3)-9` hyperconjugating structures
    B
    `CH_(3)-overset(+)CH-CH_(3)-8` hyperconjugating structures
    C
    `CH_(3)-overset(+)CH_(2)-3` hyperconjugating structures
    D
    `overset(+)CH_(3)-`No hyperconjugating structures

    • Similar Questions

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    The total number of contributing structures showing hyperconjugation (involving C-H bonds) for the carbocation given on R.H.S. is

    The total number of contriburing structures showing hurperconjugation for the following molecule cation is :

    Hyperconjugation describes the orbital interactions between the pi -system and the adjacent sigma -bond of the substituent group(s) in organic compounds. Hyperconjugation is called as Baker and Nathan effect. The necessary and sufficient conditions for the hyperconjugation are: (i) Compound should have at least one sp^(2) -hybrid carbon of either alkene, carbocation or alkyl free radical. (ii) alpha -carbon with respect to sp^(2) -hybrid carbon should have at least one hydrogen. Hyperconjugation are of three types: (i) sigma(C-H),pi -conjugation, (ii) sigma(C-H), positive charge conjugation, (iii) sigma(C-H) , odd electron conjugation. The hyperconjugation may be represented as, Number of resonating structures due to hyperconjugation =(n+1) , where n is the numebr of alpha -hydrogen. Greater is the number of such forms, more is the stability of the species under consideration. Which of the following alkenes will show maximum number of hyperconjugation forms?

    Hyperconjugation describes the orbital interactions between the pi -system and the adjacent sigma -bond of the substituent group(s) in organic compounds. Hyperconjugation is called as Baker and Nathan effect. The necessary and sufficient conditions for the hyperconjugation are: (i) Compound should have at least one sp^(2) -hybrid carbon of either alkene, carbocation or alkyl free radical. (ii) alpha -carbon with respect to sp^(2) -hybrid carbon should have at least one hydrogen. Hyperconjugation are of three types: (i) sigma(C-H),pi -conjugation, (ii) sigma(C-H), positive charge conjugation, (iii) sigma(C-H) , odd electron conjugation. The hyperconjugation may be represented as, Number of resonating structures due to hyperconjugation =(n+1) , where n is the numebr of alpha -hydrogen. Greater is the number of such forms, more is the stability of the species under consideration. Which of the following carbocations will show highest number of hyperconjugative forms?

    Total number of resonating structures in the following compound is

    Phenate ion has more number of contributing structures than benzoate ion, but still benzoic acid is a stronger acid. Explain.

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