Chemistry · Conformations of Alkanes
Among the different conformations of n-butane (anti-staggered, gauche-staggered, eclipsed, and partially eclipsed), which conformation is the most stable and why?
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- 1Partially eclipsed, because the overlap between hydrogen and methyl groups stabilizes torsional energy
- 2Fully eclipsed, because the planar alignment of hydrogen atoms maximizes overall molecular symmetry
- 3Gauche-staggered, because the methyl groups are brought close together to maximize dipole interaction
- 4Anti-staggered, because it minimizes steric repulsion and torsional strain by keeping the two methyl groups furthest apart✓
Correct answer
Anti-staggered, because it minimizes steric repulsion and torsional strain by keeping the two methyl groups furthest apart
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