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Given below are conformations of butane. Which of the following conformations is the most stable?
- a)Staggered-anti
- b)Methyl-hydrogen eclipse
- c)Hydrogen-hydrogen eclipse
- d)Staggered-guache
Correct answer is option 'A'. Can you explain this answer?
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Given below are conformations of butane. Which of the following confo...
Understanding Butane Conformations
Butane (C4H10) has multiple conformations due to the rotation around its carbon-carbon (C-C) single bonds. The stability of these conformations varies based on steric hindrance and torsional strain.
Conformation Types
- Staggered Anti: In this conformation, the hydrogen atoms on adjacent carbons are positioned as far apart as possible. This configuration minimizes steric interactions and torsional strain, making it the most stable conformation.
- Methyl-Hydrogen Eclipsed: Here, a methyl group is eclipsed with a hydrogen atom. This arrangement creates significant steric hindrance, making it less stable than the staggered conformation.
- Hydrogen-Hydrogen Eclipsed: In this conformation, two hydrogen atoms are eclipsed. While this also creates steric interactions, it is less destabilizing compared to the methyl-hydrogen eclipsed conformation but still less stable than staggered configurations.
- Staggered Gauche: This conformation has a staggered arrangement, but the methyl groups are adjacent to each other. Although it is more stable than the eclipsed forms, it is still less stable than the staggered anti conformation due to the proximity of the bulky groups.
Conclusion: Most Stable Conformation
Considering the above factors, the Staggered Anti conformation is the most stable due to:
- Minimized Steric Hindrance: The bulky groups are positioned far apart, reducing repulsive interactions.
- Reduced Torsional Strain: With the hydrogen atoms staggered, torsional strain is minimized, leading to a lower energy state.
Thus, option 'A' is the correct answer.
Butane (C4H10) has multiple conformations due to the rotation around its carbon-carbon (C-C) single bonds. The stability of these conformations varies based on steric hindrance and torsional strain.
Conformation Types
- Staggered Anti: In this conformation, the hydrogen atoms on adjacent carbons are positioned as far apart as possible. This configuration minimizes steric interactions and torsional strain, making it the most stable conformation.
- Methyl-Hydrogen Eclipsed: Here, a methyl group is eclipsed with a hydrogen atom. This arrangement creates significant steric hindrance, making it less stable than the staggered conformation.
- Hydrogen-Hydrogen Eclipsed: In this conformation, two hydrogen atoms are eclipsed. While this also creates steric interactions, it is less destabilizing compared to the methyl-hydrogen eclipsed conformation but still less stable than staggered configurations.
- Staggered Gauche: This conformation has a staggered arrangement, but the methyl groups are adjacent to each other. Although it is more stable than the eclipsed forms, it is still less stable than the staggered anti conformation due to the proximity of the bulky groups.
Conclusion: Most Stable Conformation
Considering the above factors, the Staggered Anti conformation is the most stable due to:
- Minimized Steric Hindrance: The bulky groups are positioned far apart, reducing repulsive interactions.
- Reduced Torsional Strain: With the hydrogen atoms staggered, torsional strain is minimized, leading to a lower energy state.
Thus, option 'A' is the correct answer.
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Given below are conformations of butane. Which of the following confo...
In the given alternates of conformation of butane stagged-anti conformation is the most stable.
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Given below are conformations of butane. Which of the following conformations is the most stable?a)Staggered-antib)Methyl-hydrogen eclipsec)Hydrogen-hydrogen eclipsed)Staggered-guacheCorrect answer is option 'A'. Can you explain this answer?
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