IV.A.5.

Compare Barriers to Internal Rotation

Which torsion in CH₃CH₂CH₂CH₃? Please choose which four atoms describe the torsional coordinate.

choose	Atom1	Atom2	Atom3	Atom4	Type of Rotor
torsion 1	3	1	2	4	CH2CH3
torsion 2	2	1	3	9	CH3
torsion 3	2	1	3	9	CH3