12 videos
5B: Even molecules with the same chemical formula can have different shapes even though they may be comprised of the same atoms. For instance, with one sheet of paper, you can make origami swans of so many different shapes - similarly molecules can come in different conformations. We will walk through the concepts of structural and conformational isomers as well as stereoisomers and diastereomers

Structural (constitutional) isomers

VIDEO 9:52 minutes
How to draw structural isomers using bond-line structures

Chiral vs achiral

VIDEO 4:17 minutes

R,S system

VIDEO 9:47 minutes
How to assign the configuration of a chirality center using the R,S system

R,S system practice

VIDEO 8:44 minutes
How to assign a configuration to a chirality center using the R,S system

Optical activity

VIDEO 9:02 minutes
How optically active compounds rotate plane polarized light

Enantiomers and diastereomers

VIDEO 8:09 minutes
How to tell the difference between enantiomers and diastereomers

Cis-trans isomerism

VIDEO 5:24 minutes
How to assign cis-trans terminology to double bonds

E-Z system

VIDEO 11:34 minutes
How to use the E-Z system to assign configurations to double bonds

Conformations of ethane

VIDEO 10:03 minutes
How to represent the staggered and eclipsed conformations of ethane

Conformational analysis of butane

VIDEO 10:14 minutes
How to analyze the staggered and eclipsed conformations of butane