Carbon13 NMR - Introduction

[@cs10054]

when i get A* chemistry im getting machemguy tattooed on my forehead

[@MaChemGuy]

c s Steady on!

[@moleculargaming_]

lol psyche

[@nwilczyn]

There were two exciting times for viewership of this video I'd like to harken back to: just before July of 2015, and just before July of 2016. I have fond memories of how many people were watching this video back in those times.

[@MichlBro]

yessir lets gooo baby

[@nghungwimwagala2467]

I appreciate your lecture its very clear

[@GM-zb2vm]

Hello. Since there is a 1% abundance of C-13, I assume it's possible for an organic compound to not be made of entirely C-13. So not all the carbons will have spin. How will this affect the NMR spectrum? Thanks a bunch, these videos are extremely helpful!

[@bhanwarlaljat3046]

13CNMR spectroscopy ka pura video hindi me dale . please sir taki hmari help o ske.

[@chemperson9465]

Doesn't a higher chemical shift mean a greater frequency of radio radiation is needed to change spin states than in TMS... as opposed to less? That's what I read on chemguide.

[@Medic704]

Thanks a lot sir..found it really helpful 😊

[@sabinahasanova7198]

Thank you!

[@ayeshaimran6630]

why have u wrote 20 for the C-C bond . is it because it's between 10 and 54 ? Thank you

[@aamirhussain6008]

yea, its cuz its between the ranges

[@angelahalton8827]

Hi MaChemGuy, why does TMS require more energy to resonate? Thank you for the videos!

[@MaChemGuy]

It has the most shielded protons due to low electronegativity of Si. If you're doing A level Chemistry, this level of detail is not required btw

[@georgelagalle2298]

I was using my OCR data sheet as I was watching the video, mine is slightly different in terms of the ranges that each environment falls under, is it ok to use any value within the range that it falls in or do I have to use values from certain parts of the range? Thanks for the video, very helpful 👍🏼

[@MaChemGuy]

I think the data sheet I used was for the old spec so ranges are slightly different. Any value in the range is OK. You're very welcome, glad it helped :)

[@eGazTheFirstAustralian]

What is NMR?

[@raheebalsaidi]

splendid

[@brendaasea116]

Hi, if TMS requires the most energy why does it equal 0

[@MaChemGuy]

It’s set as zero and everything else requires less energy hence appearing to the left on the axis

[@treymax88]

Do you have a pdf file of that reference sheet that you are using?

[@MaChemGuy]

Hi, it's the OCR Chemistry A data sheet. You can download it from the OCR website

[@zannatul23]

hi sir, whats ppm??

[@MaChemGuy]

Parts per million

[@ahmadjan6070]

"Labile"