Degrees of Unsaturation Video Lessons

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Problem: How many degrees of unsaturation does this compound have?

FREE Expert Solution

We’re being asked to determine the degrees of unsaturation for the given structure:

Recall that the degrees of unsaturation or index of hydrogen deficiency (IHD) tell us how many hydrogens are missing in a structure.

In a given structure, the IHD is:

Rings: +1

Double bonds: +1

Triple bonds: +2

For a given structure, we simply need to determine the number of rings, double and triple bonds to determine the IHD.

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How many degrees of unsaturation does this compound have?

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