These are exceptions to the rule:molecules that contain no chiral centers yet are chiral due to their inability to freely rotate.

Recognizing chiral molecules with zero chiral centers.
Determining if allenes are chiral or not.
Imagine that the allene is a big double bond. If it is able to form E or Z isomers, it is chiral.
Is the following allene chiral?

Is the following allene chiral?
Is the following allene chiral?

Is the following allene chiral?
Is the following substituted biphenyl chiral?

Determining if substituted biphenyls are chiral or not.
Must meet two criteria to be chiral:
- All substituents are in the ortho- position
- None of the rings have two of the same group on them
*ortho- is a term we'll use in Organic Chem 2. It basically means that a group is adjacent to the primary carbon linking the two rings.
Is the following substituted biphenyl chiral?

Is the following substituted biphenyl chiral?
Is the following substituted biphenyl chiral?

Is the following substituted biphenyl chiral?
- Draw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which ...
- Draw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which ...
- Draw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which ...
- Draw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which ...
- The original definition of meso is “an achiral compound that has chiral diastereomers.” Our working definiti...
- The chiral BINAP ligand shown in [FIGURE 8-8] contains no asymmetric carbon atoms. Explain how this ligand is...