nmr+instructions

Now peak b was a multiplet if it were only next to

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Unformatted text preview: another hydrogen. How is this possible? Remember, methyl groups are tetrahedral, so all 3 of those H's are equivalent. What if you started to change hydrogens for other groups? Changing the hydrogens to chlorines gives 3 equivalent chlorines, change them to alcohols gives 3 equivalent OH groups, change them to methyls gives three equivalent methyls...and each methyl has 3 equivalent hydrogens. So a t- Butyl group [C(CH3)3] has 9 equivalent hydrogens. And look: the central carbon has no hydrogens - the 9 equivalent hydrogens give a singlet....
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