Molecular groups can rotate around single bonds {rotation, bond}. Double bonds, triple bonds, and bonds with resonance have no rotation.
types
Because spherical molecules are symmetric in all three space directions, spherical molecules have no net rotation. Spin around axis leaves molecule the same. Spherical molecules cannot rotate around axis that does not go through center.
Linear molecules can spin around axis perpendicular to chemical bond, so linear molecules can have net rotation. Because linear molecules are symmetric in one space direction, linear molecules have no net rotation around line between nuclei, because spin around that axis leaves molecule the same.
Molecules that are not spherical or linear have no symmetry axis and can rotate around three mutually perpendicular space dimensions.
Physical Sciences>Chemistry>Inorganic>Chemical>Molecule>Energy
5-Chemistry-Inorganic-Chemical-Molecule-Energy
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Date Modified: 2022.0224