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Unformatted text preview: v or d the mirror plain is along the principle axis of the molecule. h the mirror plain is perpendicular to the principle axis of the molecule. Improper Rotation or Rotation-Reflection Operation ( S n ) -A rotation 360 o /n followed reflection through a plane perpendicular to the axis rotation. Two S n operations in succession generate a C n/2 . An S 2 operation is the same as inversion. An S 1 operation is the same as a reflection. Point Groups and Group Theory: -Each molecule has a set of symmetry operations that describes the molecules overall symmetry, this set of symmetry operations is called a point group. -Group theory, the mathematical treatment of properties of groups, can be used to determine the molecular orbitals, vibrations and other properties of the molecule. Example 1: Example 2: Example 3: Example 4:...
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