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lecture 3 - Isomers Isomers different compounds with the...

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1 Stereoisomerism and Chirality Chapter 3 Chapter 3 Isomers Isomers Isomers: different compounds with the same molecular formula Constitutional isomers: isomers with a different connectivity Stereoisomers Stereoisomers: isomers with the same connectivity but a different orientation of their atoms in space Chirality Chiral Chiral: from the Greek, cheir , hand an object that is not superposable on its mirror image Chirality Chirality Achiral Achiral: an object that lacks chirality; one that lacks handedness an achiral object has at least one element of symmetry plane of symmetry: an imaginary plane passing through an object dividing it so that one half is the mirror image of the other half center of symmetry: center of symmetry: a point so situated that identical components are located on opposite sides and equidistant from that point along the axis passing through it Elements of Symmetry Symmetry in objects Symmetry in objects Elements of Symmetry Elements of Symmetry Symmetry in objects Symmetry in objects
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