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What does "trans" isomer mean in cyclohexane ring?

Answer 1

This, for example, can apply to ortho (1,2 connections) compounds. If carbons 1 and 2 have non-hydrogen substituents, trans implies that one substituent is in the back and one is in the front. If both are in front or both are in back, it is cis. Note that it also extrapolates to meta (1,3) and para (1,4) connections.

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Answer 2

Skylar Alexander

The trans isomer has the two groups on opposite sides of the cyclohexane ring.

If we imagine the ring to be planar, then one group is above the plane of the ring, and one is below the plane of the ring.

Consider trans-1,3-dichlorocyclohexane.

If we draw the six carbon atoms in the plane of the paper, one Cl atom is "up" (the wedged bond) and the other is "down" (the dashed bond).

Of course, cyclohexane is not planar but exists mostly in a chair form.

Even then, we see that the Cl atom on the right is above the plane of the ring and the other is below.

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Answer 3

Elias Aguila

In the context of a cyclohexane ring, the term "trans" isomer refers to a specific spatial arrangement of substituents on the ring. In a trans isomer, two substituents are positioned on opposite sides of the ring, meaning they are located on different faces of the ring. This arrangement contrasts with the cis isomer, where the substituents are on the same side of the ring.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.