[samoyan]

Hi!
I have a problem with drawing chair conformations of cyclohexane.
For example, here`s the problem our professor gave us to prepare for the first midterm.

Draw all the chair and twisted boat  conformations of cis-1-t-butyl-4-methylcyclohexane. (there are 6)

And here is the answer:



I understand that #1 is the most stable conformation because the largest substituent -t-Butyl is in the equatorial position. Also, I see that #2 is also a chair conformation, however less stable because of axial position of t-Butyl group.
#3 is a boat conformation.

I wonder how #4 and #6 are drawn. It seems that positions of carbon 1 and 4 are changed. These must be twisted boat conformations but I have no clue how our professor drew them. Also I can`t understand how he drew #5. It looks like boat conformation, but how he managed to get both groups facing away from each other.

I would appreciate if someone can help me to figure out how to draw twisted boat and boat conformations. Thank you in advance!

[Doom91]

it is not that he shifted the grps , it is juz that he drew the conformations in different ways , the place that it is bending is not exactly at the carbon that is directly beside the carbon that is beside both of them