How To Draw A Ring In Chemistry

Cyclohexane Rings

Written by tutor Heidi R.

Students ofttimes complain they are terrible at drawing organic chemistry structures particularly chair conformations of the cyclohexane rings. Since getting the questions right often depends on the person marker your papers beingness able to translate your ring correctly I feel its worth spending actress time getting your ring right.

I will walk you through two methods for getting a perfect ring. Firstly it is unlikely y'all volition be able to depict a perfect band without picking your pen up off the paper. Please refer to my diagrams when reading the methods.

Method i for Drawing Cyclohexane Rings

Step 1. Start with a pair of lines drawn in pencil as guides. Draw a triangle equally shown in the flick.
Stride 2. Draw a pair of parallel lines coming off this triangle. Annotation the lines should not be horizontal but pointing upward towards the pencil line. The 2 top points should both be on the upper pencil guide line.
Step 3. Shut the ring past drawing two more lines to make another triangle.

Method 2 for Drawing Cyclohexane Rings

The 2d method makes use of the fact information technology is made upwards of three sets of parallel lines. In my example I take chosen the centre two lines to draw first, yous may prefer the end 2. Every bit you can meet in both my examples of have used the aforementioned color for the lines that are parallel.

Step a. I have again started with a pair of lines drawn in pencil equally guides. Although non essential to draw the lines it is important that the two top points should be on the upper pencil line.
Step. two more parallel lines.
Footstep c. Close both sides of the band with another pair of parallel lines.

Now that you accept the perfect ring we need to place the axial and equatorial bonds. Once the perfect ring has been drawn, it's easy to place the axial bonds. They should all be drawn vertical. I find it easiest to start on a bottom betoken and draw a vertical line down, any up points should have a vertical line up. This is an alternate pattern of upwards and downwards. Whenever I answer a trouble involving energy conformations I volition always commencement with a quick diagram of a cyclohexane ring with the centric positions drawn in.

One mutual mistake is to start with 2 lines horizontal. This makes information technology difficult to put the axial positions on correctly as they would no longer be vertical. Some other common mistake is to take the axial position going in the incorrect direction i.e. going up when information technology should be going downwardly. This makes information technology impossible for the carbons to be tetrahedral. Practice non draw your rings like the examples in the next ii pictures.

The side by side drawing is of the equatorial positions. Notice if the centric position goes down the equatorial position goes up. This is why I recommend putting the axial positions in offset. The equatorial positions should be drawn parallel to the lines in the band. Again in my example I have color coded which line is parallel with each side. It's worth noticing that at that place should be three sets of 4 lines at present all parallel.

Source: https://www.wyzant.com/resources/lessons/science/chemistry/cyclohexane-rings/

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