One molecule in an electrospray says to the other, "I've lost an electron". The other one replies "are you sure?" to which the first molecule says "yeah, I'm positive!".
I'm doing an all nighter right now so I can write a 35 minute presentation on High-Res HPLC-MS/MS I have to give tomorrow. Your videos are literally life savers! Big ups man.
Thanks so much. I truly appreciate the kind words. Good luck with your assignment and be sure to subscribe to the channel and share with your friends and classmates.
(Would love to see additional fragmentation examples...I'm trying to build a technique for mass spec interpretation, rather than just noodling around with peak numbers and hoping something clicks!)
+GemGoddess1 Thanks for the encouragement! I would love to expand this series, but this year I will be working with The Great Courses on a new project. It might have to wait until late 2016 :-(
You said that "linear alkanes fragment very well under (...) conditions", sorry, I didn't get that part (English is not my first language). Could you, or somebody else, write what I missed here?
+Nini Zaki Just referring to the terminal C-C bonds differently than those inside the chain. In this simple example there are only two different types of C-C bonds, so calling them 'interior' and 'exterior' is just a convenient choice of words. In larger or more complex molecules there are likely to be many, many different kinds of bonds that can break, leading to many, many potential fragments. This is why mass spectra are so useful for identification.
Can you please explain why the kathionic radical will be built? I really don't understand. It is either a radical (no charge) or an ion. I can not find an explanation. Everywhere it is just stated without explanation.
It's a radical because it's having an unpaired electron in its highest occupied molecular orbital. It's a cation because one electron is kicked out resulting in a net positive charge on the molecule. Hence the name radical cation. In short this species is produced upon removal of an electron from its highest occupied orbital, leaving behind a positively charged singly occupied orbital.
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One molecule in an electrospray says to the other, "I've lost an electron". The other one replies "are you sure?" to which the first molecule says "yeah, I'm positive!".
This is honestly the most helpful video concerning spectra I have watched in the past couple of days. Thank you so much!
Thanks so much for the feedback. Enjoy the videos and don't forget to subscribe to the channel!
I'm doing an all nighter right now so I can write a 35 minute presentation on High-Res HPLC-MS/MS I have to give tomorrow. Your videos are literally life savers! Big ups man.
Thanks so much. I truly appreciate the kind words. Good luck with your assignment and be sure to subscribe to the channel and share with your friends and classmates.
Very good step-by-step explanation, very clear and comprehensible.
this video gives the clear idea about ionization process and fragmentation .thanks lots sir
Wow, this is the best video about MS fragmentation I've seen so far! Thank you :)
Thanks Professor!
Excellent video. Exactly what I was looking for
Thanks you so much for making the video so simple it really helped me during my exams
Great. Thanks
Beautiful work! Thank you!
Dude you are the best
Real good explanation!!!!
Thanks!
Excellent and clear. More, more!! :)
(Would love to see additional fragmentation examples...I'm trying to build a technique for mass spec interpretation, rather than just noodling around with peak numbers and hoping something clicks!)
+GemGoddess1 Thanks for the encouragement! I would love to expand this series, but this year I will be working with The Great Courses on a new project. It might have to wait until late 2016 :-(
thank you !
Excellent! Thank You!
Glad you liked it! Please share and subscribe!
Thanks colonel... I salute you! ;-)
well explained, thanks
I just love you! Thanks!!!!!!!!
You said that "linear alkanes fragment very well under (...) conditions", sorry, I didn't get that part (English is not my first language). Could you, or somebody else, write what I missed here?
how do I work this the other way. lets say I have a spectrum and Im trying to figure out what the molecule is
this is great! thank you so much sir. if i could ask, what is the difference between exterior n in interior carbon-carbon bond?
+Nini Zaki Just referring to the terminal C-C bonds differently than those inside the chain. In this simple example there are only two different types of C-C bonds, so calling them 'interior' and 'exterior' is just a convenient choice of words. In larger or more complex molecules there are likely to be many, many different kinds of bonds that can break, leading to many, many potential fragments. This is why mass spectra are so useful for identification.
oh now i get it, thank youu sirr! :D
Can you please explain why the kathionic radical will be built? I really don't understand. It is either a radical (no charge) or an ion. I can not find an explanation. Everywhere it is just stated without explanation.
It's a radical because it's having an unpaired electron in its highest occupied molecular orbital. It's a cation because one electron is kicked out resulting in a net positive charge on the molecule. Hence the name radical cation. In short this species is produced upon removal of an electron from its highest occupied orbital, leaving behind a positively charged singly occupied orbital.
What program did you use to design your animations? They are pretty good.
Thank you Thank you :D :D
Where can I find the next video
good (Y)
this video gives the clear idea about ionization process and fragmentation .thanks lots sir