Organic Chemistry - Benzene NMR

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Organic Chemistry - Benzene NMR

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ChemProDao

Күн бұрын

Пікірлер: 34

@marcoguillermo. 4 жыл бұрын

Timestamps for Benzene NMR! 00:00 (Page 17) 03:15 - Ortho. 05:01 - Meta. 06:06 - Para. 07:11 - Recap. 07:43 (Page 21) Example time!

@amatulkareem881 3 жыл бұрын

Which book is this?

@Pete-da-peter 3 жыл бұрын

@@amatulkareem881 loudon

@vialoxn Жыл бұрын

Wow thank you ChemPro Dao! You explained this concept so perfectly, you have a real gift for teaching. I appreciate the help.

@vedmaburuxova68 Жыл бұрын

Very good video. In my class (which I've failed before) we are told not to bother about interpreting this region, but with explanation it makes a lot of sense and is helpful. New exam tomorrow, I expect to use this knowledge!

@lindatti7591 2 жыл бұрын

Clair and excellent thank you so much.

@asmaekacimi5403 Ай бұрын

why the last example was a singlet a triplet and dd( why instead a dd evrey doublet alone as we had in first meta example)

@billtran7429 2 жыл бұрын

thanks so much ! Covered my 6h worth of lectures in 9min

@nicolebelm 2 жыл бұрын

I legitimately wish you were my prof

@souma7310 3 жыл бұрын

Thank you so so much, it was very helpful for my exam

@shwetamazumder9304 Жыл бұрын

Thank you so much, you literally saved me

@siliconrod3248 Жыл бұрын

Dear Sir, For the singlet at 5:26 meta substituted benzene, cant that singlet be a triplet due to 4J coupling, or a doublet of doublet if the J value slightly different? Thank you.

@chemprodao3382 Жыл бұрын

In theory, that singlet can be a triple or double of doublet if the interactions are strong enough. But in reality, we mostly observe it to be a singlet.

@cihancanatan6749 8 ай бұрын

What if you have less than 4 overall integration? I am doing some practice work on a site called NMR challenge in some questions there are less than 4 integration values like 1 with a triplet and 2 with a doublet. How should I interpret those?

@chemprodao3382 8 ай бұрын

if the overall integration is 3, look like you have a 1,2,3 trisubstituted benzene.

@basyalpalpa5680 3 жыл бұрын

Excellent video..

@llynn4206 Жыл бұрын

Hi, I am wondering in the case of the ortho substitution with two different substituents, would you count the hydrogen that is four bonds away so the Hc and Hd become a triplet of doublet rather than doublets of doublets?

@chemprodao3382 Жыл бұрын

Hc has been seen to have little to none interaction with Hb. Similiar Hd has little to no interaction with Ha. So doublet of doublets or triplet are often observed. In rare case that Hc interacts with Hb, a multiplet would be observed because it would be a very messy signal.

@sh.m.aslam456 Жыл бұрын

If two same type of substituents are attach at para positions then the all H will be singlet?? Because they didn't split each other??

@chemprodao3382 Жыл бұрын

that would be correct!

@Jack_p01 Жыл бұрын

thanks a lot :)

@crumblingasmredits152 7 ай бұрын

what does d,d or triplet,mean why we called d,d as a triplet???

@chemprodao3382 7 ай бұрын

the triplet is the result of having two equivalent neighboring Hs. If the two neighboring Hs are NOT equivalent, you will have a doublet of doublet instead. Please check out my other video that on signal multiplicity that will explain this further.