Does it matter how you number a chair conformation?
Number the carbons in your cyclohexane and in your chair. Clockwise or counterclockwise doesn’t matter, as long as you use the same direction for both molecules. Identify the carbon number for the first substituent, if it’s wedged add it to the up position.
What is the most stable chair conformation?
The most stable conformation of cyclohexane is the chair form shown to the right. The C-C-C bonds are very close to 109.5o, so it is almost free of angle strain. It is also a fully staggered conformation and so is free of torsional strain.
Why does cyclohexane adopt a chair conformation?
Explanation: The carbons in cyclohexane are all sp3 hybridized. The ideal angle between atoms connected to anything that is sp3 hybridized is 109.5 degrees. In a chair conformation, the angles of all the atoms in the ring can adopt this positioning, and thus the molecule does not experience any ring or angle strain.
How do you change the conformations of a chair?
Chairs can change conformations through a process called chair flipping, creating 2 conformations for the same chair. The two conformations exist in equilibrium but often don’t have the same energy as one another; therefore, it is common for the equilibrium to favor one side or the other.
What are the axial substituents of the chair conformation?
This is your first axial substituent. The chair conformation has alternating axial up, axial down… so once you have that single axial substituent move on to.. Every carbon on the chair conformation has 1 substituent axial and the other equatorial. If axial is up equatorial is down, if equatorial is up then axial is down.
Is the chair conformation ring flip hard to draw?
The logic and reasoning behind the chair conformation ring flip will be discussed in my upcoming chair conformations video series. (stay tuned) However, drawing the ring flip doesn’t have to be as hard as students think. Yes the flip happens when one molecule changes its conformation to another, but the key to drawing the flip successfully is to…
How do you draw a chair conformation with parallel lines?
Add a dot where the point of the triangle would go. Connect your dot to the two nearest ends of the parallel lines. Repeat this for the other end to complete your hand-drawn chair conformation! Scroll down for how to draw axial and equatorial bonds to your chair conformation.
