00:02
With cycloalkanes that are substituted, we can refer to them as having either cis or trans geometry.
00:10
For cis, the substituents we are referring to must be both angled in the same direction relative to the face of the ring.
00:23
So that means both need to be angled up or both need to be angled down.
00:29
If one is angled up and the other is angled down, then we say that has the trans geometry.
00:38
When we translate the picture of the cycloalkane into, in this case, a cyclohexane, into a chair conformation, we can see that the substituents will occupy either axial or up or down.
01:04
So in this example, the 1 ,2 -dimethylcyclohexane, we have a methyl group that's on an equatorial up position...