(2)、对称中心 (3)、对称轴 CI H H H H 图8-8p对称中心 (4)、更替对称轴 H H H H H 绕轴旋转90° CI CI 镜面 战象
(2)、对称中心 图8-8 p对称中心 (4)、更替对称轴 (3)、对称轴 H H H Cl H Cl H Cl H H Cl H
对称中心 侣里
对称中心
Plane of symmetry A&F A plane of symmetry bisects a molecule into two mirror image halves.Chlorodifluoromethane has a plane of symmetry
A plane of symmetry bisects a molecule into two mirror image halves. Chlorodifluoromethane has a plane of symmetry. Plane of symmetry
Plane of symmetry 用里 A plane of symmetry bisects a molecule into two mirror image halves. 1-Bromo-1-chloro-2-fluoroethene has a plane of symmetry
A plane of symmetry bisects a molecule into two mirror image halves. 1-Bromo-1-chloro-2-fluoroethene has a plane of symmetry. Plane of symmetry
Mirror Planes of Symmetry If two groups are the same,carbon is achiral.(animation) A molecule with an internal mirror plane cannot be chiral.* Caution!If there is no plane of symmetry,molecule may be chiral or achiral.See if mirror image can be superimposed. internal mirror plane of symmetry (o)
Mirror Planes of Symmetry ❖If two groups are the same, carbon is achiral. (animation) ❖A molecule with an internal mirror plane cannot be chiral.* Caution! If there is no plane of symmetry, molecule may be chiral or achiral. See if mirror image can be superimposed