Huckel’s Rule for Aromaticity + Time-saving Shortcut
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- Опубліковано 20 сер 2024
- Leah4sci.com/ar... presents: Huckel’s Rule for Aromaticity + Time-saving shortcut
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Huckel’s rule is the most confusing and most tedious step in figuring out if a molecule is aromatic or antiaromatic. This video shows you how to calculate Huckel’s rule to ensure you ‘get’ the math, followed by a time-saving shortcut so that you DON’T actually have to DO the math every time.
Catch the entire Aromaticity Video Series Along with the Aromaticity Practice Quiz and Cheat Sheet on my website at leah4sci.com/ar...
In this video:
[0:15]Aromaticity review
[1:39] Using Huckel’s formula
[6:19] Determine antiaromatic/aromatic molecules
[7:36] Finding the pattern using electron pairs
Note: At 4:08, I state that cyclooctatetraene appears to be planar. Even though it might appear that way, the molecule actually takes a non-planar tub shape. This fact disqualifies it from following the conditions for aromaticity. Cyclooctatetraene is a non-aromatic compound.
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You are the first chemistry teacher who actually made me understand what is exactly happening in a very simple way. Much love to you!
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Never understood chemistry always avoided taking a subject that included chemistry but because i'm studying pharmacy I have to do it and thanks to you im actually enjoying it. Thank you
Oh! that's great to know! I'm glad you are actually enjoying it :). You're welcome! All the best!
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A 2pi electron system gives n =0 that's anti - aromatic I think that's an exception to your generality
@@masosomanyasaflavian2705 0 is a whole number and a compound with 2 pi electrons is in fact aromatic
Nobody:
Cyclobutadiene: "All I have are negative thoughts"
HAHA! Too funny
Nerd
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Nerd
You just explained something in mere minutes that I couldn't get from my professor all week. Thanks!
Happy to help! :)
Preparing for MCAT and this video made my day
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Hands down, Leah is the best organic tutor on UA-cam !
Wow, thank you!
Thank You! After an hour in lecture + an office hours visit with my professor I was still lost. You helped me get this concept in just 10 minutes.
oh wow! that's awesome! I'm glad the video helped you understand the subject better. Please don't forget to subscribe! :)
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Thanks so much for you kind words, and I'm thrilled to know you have so much trust in my resources!
I did not see the short cut before. Thanks for showing, a light bulb has gone off and I now understand the pattern. Thanks Leah.
Awesome!!! I love that you understand it!
Exactly what I was looking for. Thank u so much!
yay! You're welcome, I'm happy to help.
Your explanation is magical. Thanks
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Awww, thanks for those kind words!
I love how after all these years, your still replying 💞
thank you, I try
You explained this so well. Thank you very much.
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Thank you for making this so much simpler than the way my professor teaches us..I wish everyone knew how to teach like you do
Aww thanks! Glad to help!
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Love you Leah , I’m a fan lol 😂😍👍🏾 thanks for the vids
You're very welcome! And thanks for being a fan!
you help us a lot Leah.Simple and understandable.Couldn't express how much thanks i can give to you
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Mam this is my first watching video of urs and believe me i am become ur fan u are amazing....keep it up mam only the teachers like u help us to score great marks in O. C thanku very much...thanks again
Thanks for your kind words, and you're very welcome!
Wow this is brilliant I'm having an organic exam tmrrw U r a lifesaver!!!
Glad it helped! Fingers crossed your exam turns out well for you!
I doubt that the last aromatic compound is just an example for more elucidating huckel's rule and indeed is hypothetic , in other words, does not exist in real world. Lastly , thank you so much for all of your videos , I appreciate them highly.
I've never tested that in a lab but simply presented as a drawing for the sake of showing a large example. Pen and paper chemistry is always so much easier and smoother ;)
And you've very welcome
I was solving that NEET(Indian medical entrance exam) question paper of this year for practice and man it had question related to this i tried to search about it but couldn't understand stumble upon this one and I just wanted to say *thank you* for this Your channel is really great!! u explain concept so good .
You are so welcome, I'm glad it helped!
I love how you explain chemistry , thanks alot
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I passed my semester test because of you
That's awesome!!! So glad I could help!
You’re the bestest teacher in the world. A gem
Thanks so much!
I love you soooo muchhhh Leah ~ Some other websites they'd just drop down the name huckel's rule and don't even try to explain as concisely as possible. Thanks again for the wonderful content!
You're welcome! I'm glad the video helped you understood the topic better! :)
Best organic chemistry Channel on UA-cam.!
Wow, thank you!
Mam today was my test, there were four questions regarding Aromaticx and non aromaticx, I use this your trick, and all are correct answers.. It appeared very helpful today, I just saw this video last night... And additional answers will cause my selection, if I have not seen this, then I couldn't ..
oh wow! Glad to have helped! Great job! :)
Your easy to understand tutorials are helping me to clear the concepts a day before my exams. Thank you so much ma'am
It's my pleasure, I'm so glad to hear it's helped you!
Literally ur teaching is awesome mam. Really very helpful 👍..Understood it till the core.... Thank u sooo much ☺️
You are welcome 😊
Thanks Dr. Leah for all these awesome videos. So easy to understand. Tomorrow I have an exam hope these help me.
Happy to help! (but not a doctor)
You are amazing. Thank you for your time and effort. *Odd number of e- pairs obeys huckel's rule see for yourself-- I get it now! Your ability to share this in simple steps is poetic!
Glad it was helpful, and thanks for your kind words!
Probably perfect explanation
So glad you like it!
You are awesome.. the way you cleared my concept.. love from KSA.
You are very welcome
Your videos are the best and I'm able to understand these concepts very well. Thank you for all that you do!!
You're very welcome! I'm so happy to help clear things up for you!
Thank you so much for explaining this so clearly
awwee! glad to help. You're welcome! :)
Thanku so much for ur help May god bless you and ur family with abundance of love and happiness and prosperity and peace ❤️
That's so sweet! Thank you so much! :)
I can't express my thanks.. towards your efforts thanks Leah"❤️
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Hi Leah.. My Ideal prof. Miss your lectures, though I don't need to watch now but just for the way you explain it makes me to watch hear your sound.
Glad you like them!
Not only lectures but you too.
Thank you so much for a vivid explanation ❤
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Thank you Didi or sister for explaining with example.
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Your videos are brilliant, thank you!
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excellent explanation
Glad you enjoyed it!
Thank you so much you make me clear about huckel rule.
you're so welcome
Thanks a bunch. Hats off to you.
You are so welcome! Thanks for watching. :)
Too good I just loved it you explained the thing in the First five minutes itself.
Glad it was helpful!
Thank u so much ...iam preparing for NEET exam( medical entrance exam in INDIA)...
-- Love from south india..
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Best youtube channel ever find ❤🍭
Wow, glad you think so!
Thank you so much. I am from India. I can understand easily through your videos. It's very useful.
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Oh wow! Thanks for understanding me the huckel’s rule
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Thank you ma'am for this innovative way of teaching. This trick I didn't find in any Text book. Regards from 🇮🇳
You're very welcome! Glad the trick helped you!
Thanks for this helpful explaination.
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Thank you so much mam🙂 you explained very nicely 😇
You're so welcome. Always glad to help!
Thank you so much Leah 🥺
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Assalam o alaikum mam.i am from pakistan .our language is urdu i find difficulty in understanding english but i hear this lectures twice and understand very well .lecture is so nice alot of thanks and lot of love from pakistan❤❤❤now i am big fan of u😘😘
So glad you enjoyed it!
Leah you are the best I swear 🫶💖
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Glad it helped!
I think,Your 3rd example that is cyclooctatetrene is a non aromatic compound. Bcz it is stable in tub-shape which is non-planar.So resonance is absent in this case.
Thanks so much for pointing this out! I'm only human and depend on help from viewers like you to notice any mistakes I make along the way. A note about this error has been added to the video description. Cyclooctatetraene is not planar and is a non-aromatic compound. Thanks again for pointing this out!
@@Leah4sci most welcome mam. you are doing amazing work. I am from India, and i like your teaching style .I have seen manyof your videos. Thankx for teaching us.🙏🙏
It was very helpful again.. Thankx Mam.. Waiting for next video that of anti aromatics and non aromatics...
Glad you found it helpful. Just uploaded #3
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Exactly what I was looking for. Thank u so much!💚
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Very elaborate explanation. 🙏
Thanks! Hope it helped.
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Wow, thank you ! Tbh I didn't understand how to use the formula until this video.
I'm so glad that this helped to clear things up for you!
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Happy to hear that and to help!
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sema clearness !
:)
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So explanatory thank you leah
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My pleasure 😊
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Thank you! Will do!
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I got my exams tomorrow. thanks for the help
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Thankyou for greats video. I wanna cry finally i understand this😭😭😭
Don't cry! Glad to know this video helped you understand!
@4:14 how would a carbon do a 135° angle? This is no way planar.
She mentions "the way it's drawn right now, it appears to be planar". So based off the rules she's gone over up to this point, it passes all 4 criteria. In the next video, she'll cover antiaromatic and non-aromatic. If you model this molecule, it is actually boat-shaped or non-planar (which breaks the 2nd rule). New chem students wouldn't know that by looking at it so she just breezed over it as an example but you will later learn about what makes anti and non-aromatic structures.
I rambled because I'm eating but long story short; good catch and you are correct that it is not planar.
Thanks so much for pointing this out! I'm only human and depend on help from viewers like you to notice any mistakes I make along the way. A note about this error has been added to the video description. Cyclooctatetraene is not planar and is a non-aromatic compound. Thanks again for pointing this out!
It is egregious that this video describes cyclooctatetraene as planar. It takes a tub formation to reduce angle strain resulting in no p orbital overlap, and thus no conjugation.
Thanks so much for pointing this out! I'm only human and depend on help from viewers like you to notice any mistakes I make along the way. A note about this error has been added to the video description. Cyclooctatetraene is not planar and is a non-aromatic compound. Thanks again for pointing this out!
Learning it in class 10
Awesome!
I was so lost at this thq for helping me out
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Thanks for your great help to me. You are great teacher. Keep it up!!
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thank you so much. You make it easier to understand.
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Thanks mam .now I understand well.
That's great! Please don't forget to subscribe and good luck on your studies! :)
What if the compound is heterocyclic? Should we count lone pairs?
If they are in resonace, then yes. Otherwise, no.
I have a video explaining this in detail (in this series) showing you when they do and don't count. In short, if they are needed for resonance, yes. Otherwise no
Beautiful lecture with sweet voice.. ❣️❣️
Thank you
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It's really very informative and helpful .. Thank you. 😊
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Superb mam you're rocken the organic thank you very much
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Thx, you really made it clear
Glad it helped!
Thanks a lot, 😊 I am always confused with huckel's rule no i am satisfied.
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You're very welcome, so happy I could help!
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Thanks mam for explaining in easy way ❤️
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thx,very easy to understand.
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As a ChemE student, I like numbers and equations. This is the only part of organic so far that hasn't made me want to jump off a bridge.
Lol, glad to hear it!