Aromatic, Antiaromatic, Non-Aromatic Criteria + Practice

Leah4sci.com/aromaticity presents: Aromatic, Antiaromatic, Nonaromatic
Need help with Orgo? Download my free guide ’10 Secrets to Acing Organic Chemistry’ HERE: leah4sci.com/orgo-ebook/
This video will show you the differences between Antiaromatic and non-aromatic once you’ve determined that a molecule does not follow the first 3 criteria for aromaticity. If cyclic, planar and conjugated, what does Huckel’s Rule tell us about the molecule.
This is Aromaticity Video #3. Catch the entire Series Along with the Aromaticity Practice Quiz and Cheat Sheet on my website at leah4sci.com/aromaticity
In this video:
[0:13] Review of aromatic conditions
[0:44] Difference between Aromatic Vs. Non Aromatic
[4:01]Anti-aromatic Example #1
[5:00] Non-aromatic Example #2
[7:05] Tricky sample problem #3
[10:20] Anti-aromatic sample#4
Follow along with your semester by using my Orgo Syllabus Companion: leah4sci.com/syllabus
For more in-depth review including practice problems and explanations, come join my online membership site the organic chemistry study hall: leah4sci.com/join
For private online tutoring visit my website: leah4sci.com/organic-chemistry
For questions and comments, find me on social media here:
Facebook: Leah4Sci
Twitter: Leah4Sci
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Pinterest: www.pinterest.com/leah4sci/

[@shareensyed01]

What analogy! Wish we had more teachers who could teach us this way in person. I don't think I'll forget this till my exam. (fingers crossed)

[@Leah4sci]

I'd cross my fingers for you, but then I couldn't type! Let me know how it turns out!

[@avayurczyk9549]

Seriously though! Super helpful! When you were saying the hydrogens would push eachother I thought you would say like a Yankees fan does to a fan of any other team 😂 you are saving me before my final!!!

[@riteshprakash6361]

Heyy ma'am...here is one of your viewers from INDIA🇮🇳🙏🏻 loved the video❤❤❤it was useful.❤

[@Leah4sci]

Glad to help! :) All the best!

[@subhashisroy5158]

I am also indian

[@kishoreshankar.s787]

Me to iam also a indian

[@arrowqueen3641]

I am also from India ☺ . Thanks ma'am because this topic was really confusing me until I watched this video 😁

[@amitpawa8983]

im also idian

[@michelletheunambiguousslay93]

Girl your metaphors and analogies are SO on point! I'm struggling hard distinguishing non aromatic vs anti aromatic, but you explanations are so helpful. Hopefully I'll remember when I take my exam 😂

[@Leah4sci]

Fingers crossed (after I finish typing) that you remember!

[@clementjrngandu6842]

You're just the best Leah thank you for making our chemistry easy

[@Leah4sci]

Awww, you're so welcome!

[@kusumshibaranjanibohidar5996]

You're so good. I wish I knew about your channel earlier. Thanks a lot ❤

[@Leah4sci]

I'm glad you know about my channel now! :)

[@erzas556]

Thank you so much for all the details, I was really confused and now I’m so confident

[@Leah4sci]

Happy to hear this! You're so welcome.

[@QWERTY-qe1fj]

7:41 cracked me up when the mets logo popped out.

[@Leah4sci]

LOL

[@Hakkyou13]

THANK YOU!!! This made a lot more sense than retreading the textbook

[@Leah4sci]

You're very welcome!

[@sanahilal6179]

Waiting for the next part ! It was very helpful but just have a little confusion from the topic that is yet to be explained by you.

[@Leah4sci]

Please subscribe to stay updated with new videos. Thank you for visiting. :)

[@messymaci9592]

I said this on twitter but I'll say it again. Thank you so much again for your vids! ❤️

[@Leah4sci]

You're very welcome!

[@GiftJordawe-gz1xr]

Chemical engineer from Malawi, You always help me to visualise what is happening, thank you very much.

[@Leah4sci]

You're so welcome!

[@lyndeyhigham7361]

Great baseball analogy! I just found these videos and they're going to save my grade!

[@Leah4sci]

So glad to hear that!

[@fatematuzzuhra6256]

Really helpful video..Thank you ma'am.. Keep making such videos ❤

[@Leah4sci]

You're welcome and thanks for the feedback. Make sure to subscribe so you won't miss new videos that will be posted.

[@gladyschalwe8326]

Your videos are so helpful , and easy to understand

[@Leah4sci]

Glad you like them, I love to hear how much it helped!

[@medandmusings]

Great video! Loved the baseball analogy!!

[@Leah4sci]

Thanks! Glad it helped! :)

[@deannedejella9782]

"The fun tricky part professors love to put on exams and many students get this wrong." 😆 I went to youtube so I can explain in my assignment why it is non aromatic and there you are, giving a perfect explanation. So, thank you! 😊

[@Leah4sci]

You're so welcome, I'm glad it helped!

[@michelletheunambiguousslay93]

Yes!! Leah is a God send for those regrades 😂

[@Drarkb]

Thank you madam ....ur teaching was awesome. ..I even follow ur worksheets ☺❤

[@Leah4sci]

You're very welcome 😊

[@mrc.s]

love your videos! hope you would venture out into teaching the other branches of chemistry!

[@Leah4sci]

Glad you enjoy them! I still have a ton to do for organic chemistry and the MCAT, so I can't focus on other subjects just yet

[@dianed4938]

wow who knew studying chem just a little bit baked and coming across this excellent explanation, would get me so interested in the work

[@Leah4sci]

Interesting combination but hey, if it works it works

[@ruvimbomahewu3925]

You taught my teacher now you're teaching me👍👍👍 you're a genius thank you

[@Leah4sci]

You're very welcome, and thanks for your kind words!

[@bakyarajvaithilingam4294]

Excellent Explanation... loved it

[@Leah4sci]

Glad you liked it!

[@shahidmalik7910]

wao mam...your lecture on aromaticity was amazing......thank you so much

[@Leah4sci]

You're very welcome!

[@shouryasugla3204]

Thanku mam From india❤️🇮🇳 Very happy to find such a perfect channel for organic 😊

[@Leah4sci]

So glad to help!

[@shouryasugla3204]

@@Leah4sci Mam where are u from?

[@jalsamuel]

Thank you for this helpful video!!

[@Leah4sci]

You're so welcome!

[@UthpalaPereraChemistry]

clearly explained.Thank you

[@Leah4sci]

You are very welcome!

[@Thuglife-wo7cl]

Namaste mam i am from nepal really this video make too much easy to understand about aromatic hydrocarbon chapter🤗🤗 lots of love from Nepal🇳🇵🇳🇵

[@Leah4sci]

Happy to help!

[@user-ol6nn1jx4b]

I finally understood this😭😊😊thank you so much

[@Leah4sci]

You're welcome 😊

[@taniaaugustine967]

Wow it's really simple and colorful presentation....🤗

[@Leah4sci]

Glad you enjoyed it!

[@nutmalone5527]

Our professor didnt do 10% of what you did in this video and i ended up getting 80 on the midterm because i couldn't identify which one was aromatic or not, so thank you very much and i hope i can do better in my finals

[@Leah4sci]

I'm happy to help clear things up for you, and I hope you can, too!

[@alexdengel694]

Your videos are arguably better than Khan Academy's. Please keep posting - they help a lot!

[@Leah4sci]

Glad you like them!

[@HellfireJags]

The baseball analogy was great for explaining aromatic vs anti-aromatic vs non-aromatic.

[@Leah4sci]

Glad you liked it!

[@sublime16]

I am so in love with your vedios :') why didnt I see it earlier !!

[@Leah4sci]

Glad you like them! And I'm glad you know about my videos now!

[@rafaeli-ev4485]

hands down best explanation ever

[@Leah4sci]

Thanks! Glad to help!

[@surajsinghpatel5566]

Thnaku soo much mam. It is really very helpful for me

[@Leah4sci]

You're very welcome!

[@minoshisooriyaarachchi171]

Thank you madam❤️

[@priyar8690]

Very easy to understand thanks a lot

[@Leah4sci]

You are welcome!

[@nicolechan6930]

Please upload Part 4!!

[@Leah4sci]

You can find them all here: leah4sci.com/aromaticity

[@caroalvarez6666]

You are the beeessst i love you-♡-

[@Leah4sci]

Thanks! :)

[@joaobelmino]

I love Your vídeos, greetings from ceará,Brazil. 😁😁

[@Leah4sci]

Glad you like them!

[@jaxsenball8901]

Hi, Leah. This was very helpful. Are the solutions for the aromaticity quiz public? Your webpage said it was solved in a member's study hall but I also saw it said free PDF solutions to follow.

[@Leah4sci]

Contact me about this via my site leah4sci.com/contact

[@Rodsmphepo-yaomba]

your viewer from Malawi.... love your lectures

[@Leah4sci]

Thanks and welcome!

[@Hrit]

Well explained 👍

[@Leah4sci]

Thank you!

[@onyekastanislausokwundu7334]

Thank you very much for this lesson. I never considered the orientation of atoms, all I do was "if they are all SP2, it's planar", now that I am conscious of bond angles, is it possible for the cyclobutadiene to be planar?

[@Leah4sci]

Yes. I share around 10:15 in the video that cyclobutadiene is planar. However, it does not follow Huckel's Rule and is, therefore, antiaromatic.

[@vincentmudimeli4430]

I will be happy to receive new video as organic chem student

[@Leah4sci]

Keep checking back, I post new videos as I have time

[@jatindervirsingh4850]

thanks for information

[@Leah4sci]

You're very welcome!

[@ee766]

Tysm u helped me alot ❤️❤️❤️

[@Leah4sci]

Happy to help!

[@ShaVaughn]

THANK YOU.

[@Leah4sci]

You're welcome!

[@zisan2906]

İt was very useful. You are really a great teach . But I want more where is the fourth video?

[@Leah4sci]

it's in the series, see the linked playlist

[@ALOK-jq7xx]

thank u mam, love you 3000 💙

[@Leah4sci]

You're so welcome 😊

[@Graysa_a_glam]

It's was really useful

[@Leah4sci]

Happy to help!

[@davionsterling8784]

omg, it's like I read the lecture like a million times and couldn't understand huckel rule i failed the first test miserably 20 percent next test thursday i am feeling very optimistic..... i have finals december 11 for organic chemistry could you do a full series on spectroscopy.... Mass Spectroscopy, IR spectroscopy, UV Vis Spectroscopy and H-NMR and C-NMR im totally lost in spectroscopy thanks much for this video im watching everything related to aromatic on this

[@Leah4sci]

Best wishes on your upcoming final. Make sure to visit my website (use my syllabus guide leah4sci.com/syllabus) to find a list of all the free resources I already offer.

[@isaackoh5792]

The analogy of the Yankees, Mets, and non-baseball fans sticks with me, and facilitates my understanding of aromaticity, antiaromaticity, and nonaromaticity.

[@Leah4sci]

Awesome, so glad it helps it stick!

[@JasonVaysberg]

I learned that bigger molecules like (8)annulene will fold in and be nonaromatic rather than antiaromatic.

[@glokta1]

Yes, she included that example at 7:03

[@Leah4sci]

Exactly

[@mahadevsurvase4329]

thank you.

[@Leah4sci]

You're welcome!

[@nurkatserikbay6525]

u re amazing. thank u very much

[@Leah4sci]

You're welcome!

[@colinwang3542]

Is cyclobuta-1,3-diene planar? If it is, the angle will be 90 degree with great angle strain. If it is not, it is nonaromatic but not antiaromatic.

[@Leah4sci]

Yes, it is planar. The angle strain is actually what qualifies cyclobutadiene to be an anti-aromatic compound. Anti-aromatic compounds are highly unstable and highly reactive because they are forced to occupy a geometric position that is undesirable.

[@kamah6393]

Am a view from Kenya Nairobi University ,u are really credible

[@Leah4sci]

Thank you!

[@kuntalkoley3107]

Mam, please make a vedio on AES & ANS reaction

[@Leah4sci]

For help with this topic and more, I recommend joining the organic chemistry study hall. Full details: leah4sci.com/join

[@nasrullahmahar7669]

Ma'am for your information I don't care about base ball probably I am Non aromatic class. Nice explanation. Love for You from Pakistan. You Know I am big big fan of you.

[@Leah4sci]

Thanks! Glad you like it!

[@user-dk6pl4ws1s]

Thanks a lot

[@Leah4sci]

You're very welcome!

[@mahmoudsanad6447]

Excellent

[@Leah4sci]

Thank you

[@joshuaharden2628]

you said you'd explain aromaticity with ions in the next video but I don't see a next video

[@Leah4sci]

Please stay tuned for more videos. Make sure to subscribe so you get updates when new videos are uploaded. Thanks!

[@Butergo]

Best 💯 explaination love❤ it

[@Leah4sci]

Awesome!

[@Butergo]

@@Leah4sci thanks for reply

[@connorz4254]

I thought naphtalene is the simplest bicyclic aromatic compound. It's 2 benzenes attached. It's planar, has conjugated pi bonds so it can resonate all around the structure, and it has 10 pi electrons (5 pi bonds). How is it non-aromatic ??

[@Leah4sci]

The example at 7:10 is NOT napthalene. It is missing a bond down the middle, which would close the ring into two separate 6-membered structures. See the following cheat sheet for the structure of naphthalene: leah4sci.com/aromatic

[@yaburpajing5324]

I have been learning the concepts of aromaticity for a couple of years but couldn't figure out how anti aromatic compounds have higher energy compared to aromatic compounds. Well some teachers tell us that it basically comes from molecular orbital theory can u explain how?? I have been eagerly waiting for someone to clear this and btw i love the way u explain the facts like the video u made on chair conformations were amazing👌👍#keepupthegoodwork

[@Leah4sci]

That is correct but I currently don't have plans to do a video on this. I cover undergraduate level organic chem and most of my students are not required to know this

[@yaburpajing5324]

Ok thats fine

[@sukanyasumansaha7880]

If you see, anti aromatic compounds have even number of electron pairs Let's take an example of two electron pairs... It has 4 electrons to fill the pi molecular orbital. The lower energy pi will have two electrons and the other two degenerate(same energy) orbitals will have the other two electrons existing in triplet state i.e. half filled state. Two electrons in this state makes the compound biradical and they react readily to form fulfilled bonding molecular orbitals. We can say they have high energy because they are unstable compared to a odd number of pi electron pair molecule who would have extra stability owing to fulfilled molecular orbitals

[@hasiniishanka9417]

A viewer from 🇱🇰 and ❤️ is 4 u

[@Leah4sci]

Thanks so much!

[@ceylinokten1161]

where is the next video you talked about?? I need it 😄

[@Leah4sci]

Thanks for asking; a link to the entire series and more is in the description.

[@TaylorDanae13]

Where can you find the next video it is not on the aromaticity playlist ?

[@Leah4sci]

Please see the link in the video description. If you can't find it, please contact me through my website: leah4sci.com/contact

[@sufeesahin5922]

When next video will come mam?? Still m confusing with anti aromatic and non aromatic

[@Leah4sci]

Please subscribe to see updates first. :)

[@saikatke1999]

Mam your Didactic is wonderful , Love from India 🇮🇳

[@Leah4sci]

Glad you like it!

[@red-baitingswine8816]

What are the resonance forms of (non-cyclic) hexatriene?

[@Leah4sci]

I'm sorry, but I don't offer tutoring over social media. For help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

[@g_3shorts274]

Now my dout clear, 👍

[@Leah4sci]

Happy to help!

[@MukeshKumar-zj2vh]

it was Helpful...

[@Leah4sci]

Glad it helped! don't forget to subscribe

[@MukeshKumar-zj2vh]

@@Leah4sci ya It is already subscribed

[@me-sg8gm]

what if the charge is negative, if we switch that positive charge to negative

[@Leah4sci]

That would be a different example than the ones I cover in this video. Since I don't offer tutoring over social media, for help with questions like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

[@siddharthsinha1711]

Awesome video 👍👍👌👌

[@Leah4sci]

Thanks 🤗

[@siddharthsinha1711]

@@Leah4sci 👍😊

[@raza251]

🇵🇰🇵🇰 Cyclooctatetraene according to huckel rule is non aromatic compound but its aromatic in nature, how can we justify our ans and is this the failure of Hückel rule??

[@Leah4sci]

I'm sorry, but I don't offer tutoring over youtube comments. For more help with questions like this, I recommend joining the orgo study hall. Details: leah4sci.com/join

[@edmundtakudzwa6290]

From Zimbabwe... better than my professor

[@Leah4sci]

Happy to help!

[@inshamanowar360]

Make more videos leah!

[@Leah4sci]

definitely! please stay tuned and don't forget to subscribe! :)

[@chemi-tech6307]

Mam any tricks to find the nonaromatic compounds

[@Leah4sci]

The trick here is to look for compounds that do not follow one of the first three conditions for aromaticity- cyclic, planar, and conjugated. If the molecule disobeys even one of these conditions, then it is considered non-aromatic.

[@Pete-da-peter]

As a Yankee fan, I'm offended, but knowing how good I wanna do in this exam.. imma let it slide today. Thanks a lot btw

[@Leah4sci]

hahahaha, glad you let it slide! Best wishes on your exam!

[@Drarkb]

How do I check weather it's conjugated or not ..?

[@Leah4sci]

Great question. A conjugated molecule has electrons that are able to be distributed over the whole structure. What you want to look for are consecutive sp2 hybridized atoms that are capable of resonance. The presence of even one non-resonating atom can destroy the conjugation of the entire molecule. To read more, visit my aromaticity tutorial at leah4sci.com/aromaticity.

[@GeminiSwagger]

I like that you made your team aromatic lol

[@Leah4sci]

:)

[@tanujdhawan5492]

hlo please upload next part of this video

[@Leah4sci]

Please see the link in the video description. If you can't find it, please contact me through my website: leah4sci.com/contact

[@curtpiazza1688]

Love the baseball analogy!! 😂

[@Leah4sci]

Yay! I love baseball!

[@user-wk5gz4cu6o]

After long time I see you

[@Leah4sci]

?

[@jakegould9228]

I'm a Mets fan too thoughts on possibly signing Kris Bryant after the lockout

[@Leah4sci]

#Letsgomets I've been too busy with my new baby to follow the trade rumors. Figured I would start watching on opening day and figure out what happened based on who takes the field.

[@youssefhamdy6670]

Why don't you upload part 4??

[@Leah4sci]

The free videos are what I do as I have time. Be sure to subscribe to my channel so that you know as soon as I finish it. Also, this topic is covered in detail in the orgo study hall. full details: leah4sci.com/join

[@marowashhab2672]

اريد ترجمه بالعربي!

[@Leah4sci]

:)

[@mujibhaisolanki7666]

Plz new video sand me..

[@Leah4sci]

sand you? sound painful

[@shahanashahana6799]

frm Kerala❤️

[@Leah4sci]

Thank you.

[@BeAdarshmmbharat1111]

From India

[@Leah4sci]

Nice to 'meet' you

[@umeshwarans.a6435]

from tamilnadu🤩🤩🤩

[@Leah4sci]

:)

[@juanserrano8777]

Thank you Leah , this was very helpful. This also confirmed my suspicion that you were from the east coast. You accent was very northeastern LOL. LETS GO YANKEES!!

[@Leah4sci]

So glad I could help and METS ALL THE WAY!!! :)

[@Samsam-xr4fz]

Hello leah, in which university did you study?

[@Leah4sci]

I fail to see how that's related to aromaticity

[@Samsam-xr4fz]

@@Leah4sci hahaha. It's just curiosity😸😸😸

[@Leah4sci]

I went to school in NY (United States)

[@DutAkot]

❤

[@Leah4sci]

Thanks for watching!

[@k.s6153]

Armoaticnaldehtde

[@Leah4sci]

For help with topics like this and more, I recommend joining the organic chemistry study hall. Details: leah4sci.com/join or contact me through my website leah4sci.com/contact/

[@zamfirarobert4518]

WOOOOOO YANKEE WITH NO BRIMMMMM!!!

[@Leah4sci]

lol

[@user-vs6fm3zt6w]

She so cute though

[@Leah4sci]

She?

[@damnthisgirl2130]

I am the non baseball fans she’s talking about

[@Leah4sci]

Haha!

[@rojapanchadi9198]

Irrevelent video Unable to understand Very depth and difficult

[@Leah4sci]

which part of the video did you find hard to understand?

[@tiggerthecat1]

​@@Leah4sci Don't worry Leah! The defining chacteristic of this, and all of your videos is - easy to understand!

[@sunithavanka1656]

How can apply for pyrrole, cyclo penta dienyl anion or cation