Determine if the following pairof molecules is isomers or conformers?

Although there is free rotation around most σ bonds, rotation is restricted around the C--N bond of an amide. Explain why this is true.

Determine if the following pair of molecules isisomers or conformers?

Determine if the following pairof molecules is isomers or conformers?

Determine if the following pairof molecules is isomers or conformers?

Draw a perspective representation of the most stable conformation of 3-methylhexane.

In Chapter 8, we study the chemistry of alkenes, like ethene. In contrast to ethane, there is no free rotation around the C = C double bond of ethene. Explain this in the context of the molecular orbital picture of ethene.