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what is the point group for biphenyl staggering form, but not for gauche? what is the...

what is the point group for biphenyl staggering form, but not for gauche? what is the point group for just acetylsalicylic acid?

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Answer #1

A symmetry operation is a movement such as an inversion about a point, a rotation about a line or a reflection about a plane in order to get an equivalent orientation.

The various symmetry elements and symmetry operations are listed in below table.

Symmetry element

Symmetry operation

Schoenflies symbol

Hermann-Mauguin symbol

Centre of Symmetry or Inversion centre

inversion

I

?

Plane of symmetry

Reflection ?

?

m

Axis of symmetry

Rotation through

Cn

n

Improper axis

Rotation followed by reflection in a plane perpendicular to axis

Sn
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