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Splitting H-NMR for this aromatic molecule

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What would be the splitting patterns for Hb & Hc?
Doublets or triplets?

Ha & Hc can both couple Hb, would we see two doublets or a triplet?
Same with Hc which can be coupled by Hb and Hd


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(edited 8 years ago)
Reply 1
where did you derive this source from?



Original post by velvetsky
ImageUploadedByStudent Room1452643019.869443.jpg

What would be the splitting patterns for Hb & Hc?
Doublets or triplets?

Ha & Hc can both couple Hb, would we see two doublets or a triplet?
Same with Hc which can be coupled by Hb and Hd


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Reply 2
Original post by tammymxx
where did you derive this source from?


This is university level.Was aiming the Q at chemistry (& related subjects) undergrads lol



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Original post by velvetsky
ImageUploadedByStudent Room1452643019.869443.jpg

What would be the splitting patterns for Hb & Hc?
Doublets or triplets?

Ha & Hc can both couple Hb, would we see two doublets or a triplet?
Same with Hc which can be coupled by Hb and Hd


Posted from TSR Mobile


Hb is split by two non-equivalent protons, so it will be a doublet of doublets.

Hc is split by two non-equivalent protons, so it will be a doublet of doublets.
Reply 4
Original post by charco
Hb is split by two non-equivalent protons, so it will be a doublet of doublets.

Hc is split by two non-equivalent protons, so it will be a doublet of doublets.


Ohhh I see! Thankyou so much!
So essentially a doublet peak where one branch of that doublet is also split into a doublet?


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(edited 8 years ago)
Original post by velvetsky
Ohhh I see! Thankyou so much!
So essentially a doublet peak where one branch of that doublet is also split into a doublet?


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Both branches of the doublet are also split into a doublet.

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Reply 6
Original post by charco
Both branches of the doublet are also split into a doublet.

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Nice one! Thankyou very much!


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