CHEM 1040 Lecture Notes - Lecture 32: Isomer, Pi Bond, Boiling Point

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CHEM 1040- Lecture 32- Isomers and Physical Properties
Chiral Compounds
Aka Asymmetrical compounds
3-dimensionally, they’re show as;
Towards you:
Away from you:
Below are enantiomers; isomers for which chemical properties are the same but
biological properties are different
When mirrored, they are non-superimposable
o They have no symmetrical plane
Mirror
Isomer Questions
Are the following geometric isomers, optical isomers, or neither?
1.
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Document Summary

Chem 1040- lecture 32- isomers and physical properties. Chiral compounds: aka asymmetrical compounds, 3-dimensionally, they"re show as; Away from you: below are enantiomers; isomers for which chemical properties are the same but biological properties are different, when mirrored, they are non-superimposable, they have no symmetrical plane. This is a geometric isomer, because there are two branches on either side of a pi bond that can be drawn more than one way, but still result in the same chemical compound. This is an optical isomer, because there are four different branches attached to one carbon, so it can be drawn more than one way. Physical properties: we are interested specifically in boiling points and water solubility, depends on the intermolecular forces which result from the electrostatic attractions between the dipoles of adjacent molecules. For molecules with the same number of carbons but different functional groups: For molecules with the same number of carbon atoms but more than one functional group:

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