Why is the higher peak 'inside'. I referred to the geminal coupling right before where we learned that the signals point to each other in the case of germinal coupling but I also understand geminal coupling to apply only when 2 non-equivalent protons are one the SAME carbon. This is not what we have here so I am still unsure why we see this type arrangement. Thanks!!
For the molecule at 5:10, I thought coupling only occurs if they nuclei are 3 bonds or less apart? Does a double bond just count as 1 when you’re counting the bonds that separate them?
yeah, double bonds only count as 1 bond. What I don't understand though is at 1:08 he says that the n+1 rule only works for protons that are chemically equivalent (i.e. they in the same chemical environment and so have the same chemical shift). Isn't it the the other way round? Doesn't the n+1 rule work for chemically inequivalent protons?
@@joelokoye23 Maybe he equivalent, by the hydrogens that are in the same environment compared to the "blue" hydrogen we are focussing on. So, those hydrogens are equivalent (for an example that only works sometimes: a methyl group) but inequivalent relating to the hydrogen we are focussing on?
Omg this is so amazing, I could cry. My prof couldn't explain this AT ALL. Thank GOD for Khan!!
Are we classmates? hahahahah
I cannot be grateful enough for these videos. thank you from the bottom of my heart
Ooo ,Nice
alr calm down
thank God for khan academy 😭❤️
I was waiting for the explanation as to why the double doublet have different heights..
this is so clearly explained, thank you!
Such an amazing explanation, thank you very much!
didnt make any sense until this video. thank u sincerely.
Amazing, thank you!
how do you know which proton to start the splitting from?
Greater the coupling constant, more the splitting strong.. so start with the proton of high coupling constant.
Very helpful, thank you
thank you sooooo much
Amazing,It helps me a lot!!
Thank you so much you are amazing ❤️
At the time of 5.55 cis coupling never give j=12 hz
Thanks so much!
how do I know the Hz for the different protons (coupling constant)?
You just saved my life
what happens when their is overlap? does it still get counted as 2 peaks?
Why is the higher peak 'inside'. I referred to the geminal coupling right before where we learned that the signals point to each other in the case of germinal coupling but I also understand geminal coupling to apply only when 2 non-equivalent protons are one the SAME carbon. This is not what we have here so I am still unsure why we see this type arrangement. Thanks!!
Sr in second ex why d J value is 7 hz whereas d J value in general for geminal alkene protons in between 0 to 3
what if we draw 6Hz double before 12Hz one when making the spliting tree
+Kasun Wekasinghe You should try it, and notice it doesn't make a difference
For the molecule at 5:10, I thought coupling only occurs if they nuclei are 3 bonds or less apart? Does a double bond just count as 1 when you’re counting the bonds that separate them?
yeah, double bonds only count as 1 bond. What I don't understand though is at 1:08 he says that the n+1 rule only works for protons that are chemically equivalent (i.e. they in the same chemical environment and so have the same chemical shift). Isn't it the the other way round? Doesn't the n+1 rule work for chemically inequivalent protons?
@@joelokoye23 Maybe he equivalent, by the hydrogens that are in the same environment compared to the "blue" hydrogen we are focussing on. So, those hydrogens are equivalent (for an example that only works sometimes: a methyl group) but inequivalent relating to the hydrogen we are focussing on?
I still don't get it :'(
wait I thought n + 1 is for non equivalent protons?
nop, its for equivalent protons
plz plz anybdy send me spectrum of appatent Dt having 6 peaks
Shouldn't the "7Hz" splitting be two times the length of 3.5? Now the 7Hz signal is 14 Hz long...
can you explain more. so i can help you ? since there was not 14 hz long
I agree, and it should be 13,6,6,-1,-1,6,6,13, that means 6 peaks totally
Sal Khan?
Where is sal Khan