Stereochemistry: Enantiomers

[@ProfessorDaveExplains]

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[@qojte]

thank u chemistry jesus

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Not funny

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It is funny

[@debebeseyoum7081]

@@firebloom02 ooow really I believe that u don't know nothing about jesus.. first try to understand k

[@manikantan4809]

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his excellent communications skills and knowledge of chemistry, is quite attractive, lol..

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Agree

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The Law of Attraction does come to mind here. -James.

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Niggas tryna smash the teacher. Bro read

[@vrushabh.m5104]

Woow I FOUND IT SO DIFFICULT TO UNDERSTAND THESE ORGANIC CHEMISTRY CONCEPTS. THANK YOU PROFESSOR DAVE. YOU ARE THE BEST SCIENCE TEACHER I HAVE SEEN. THANK YOU.

[@SkySky-wk9vv]

You are amazing!!!! Thank you for letting us use your videos for free because as students is hard to afford good explanations like yours!!!! you rock!!!!!!

[@shamaaropunjabi7336]

I watched too many videos on YT to understand the concept but sir u are just amazinng!!!!

[@KingInferno93]

I am getting ready to teach a lot of organic students this concept and this video very beautifully visualized and conceptualized this topic. Very nice job Professor Dave :)

[@evenmehari3938]

thank you so much!!!!I had no clue when I first start seeing it!!! keep it up!!! I watch all your videos

[@torpezaincreible8692]

I cannot thank you enough for explaining organic chemistry!

[@karthikeyane7799]

nice one professor... far more clear and better then my teacher...tankx

[@karthikeyane7799]

If u can explain optical isomerism ... It would be so good I find it difficult to understand

[@minadehghani1831]

perfect :) I was going crazy as i couldn't understand it. but you helped me alot.

[@enyonamfame]

Not ME a Msc Biochemistry student fgrom Ghana on your page and understanding some concepts for the first time ever

[@yolandayang7380]

I love this man!! he explains stuff so so so so well

[@Mariiiam]

omg you're the best. I can't believe I finally understood this

[@Icapturebythisu]

Super explanation ......

[@rip3888]

quality science right here

[@pianomello]

Thank you Sir!

[@PaKiKiNg908]

Thank you so much Professor Dave!!!!!

[@salomezhozhadze9071]

thank you

[@myatphonemyint526]

Waiting, for you to reach over 1M subscribers

[@moyukhdas8385]

super helpful and life saving!!! had a question- the achiral molecule at 6:35, I am not being able to superimpose the 180 degree flipped molecule with the main image.

[@knownstranger2570]

The only doubt I had was about the hand example if we take the mirror image of our hands and then rotate it 180° it will surely overlap then how could it fit as an example of an enantiomer?

[@OhGeeKush]

So would enantiopure mean it lines up correctly? Or is that a totally different thing

[@rassimsimou1594]

Good

[@DerekIsADino0605]

ily bro, saving me frfr

[@shielamariegaviola6510]

thank you so much i learned a lot :)

[@amanbishnani9335]

The achiral example is an enantiomer???

[@amanbishnani9335]

Why the mirror images of molecules are rotated at 180 degrees in order to check enantiomeric relations???

[@ProfessorDaveExplains]

because we have to try to line up all the atoms on top of each other and make sure they fit

[@giftlukomano]

Good work

[@alsomambo]

How did u change the Y and Z u did a 180 rotation but the X is the same and Y and Z only changed?!

[@jssdce123]

thank you so much for this. well explained :)

[@harimenon7316]

Professor dave ,can you explain a bit more on racimerisation

[@irfanmusiccafe5785]

well explained sir

[@Maddie05007]

But there is no restricted rotation right? For example, 5:28Why cant we just pull that br from inside the board plane to towards us plane?then it would be the same thing. Genuine doubt, because in geometrical isomerism, where there was a double bond in between, for say two carbon atoms, so cis and trans or syn and anti structures are not the same compounds and you cant rotate them as well cause the bond would break.

[@0JJE0]

Yay. Thanks for this. 😁

[@xandermoyle]

A problem here, I would suggest drawing your molecular diagrams on a piece of clear acetate. Flip the acetate as if you were creating a mirror on the x and y axis. This would better demonstrate the principles you are talking about. As a viewer I am taking you word that the 180 rotation of the molecule will match or not match. I want a more convincing proof.

[@onlynonsense8723]

So molecules around an atom can move (twirl), such as with newman projections, but the bonds are rigid and cannot move, that's why chirality exists?

[@ProfessorDaveExplains]

The bonds rotate, which thereby produces the different conformations.

[@onlynonsense8723]

@@ProfessorDaveExplains Thanks for the reply. So the covalent bonds in a tetrahedral molecule always stay the same distant apart, 109.5 degrees, and that's why chirality exists as otherwise the bonds would move (not rotate) and all molecules would be achiral? Wait, that makes no sense as seen with chair flipping

[@ProfessorDaveExplains]

Yes the bond angles don't change. I'm not completely sure I understand what you mean about chirality, but yes the spatial orientations are fixed. Chair flipping is also just different conformations, like Newman projections.

[@onlynonsense8723]

@@ProfessorDaveExplains Thanks. I think my brain has clicked. Much appreciated :)

[@shuaibsalim6616]

prof at 4:00 the molecule is not chiral, but if its mirror image is turned 180 degree the Br group will move behind and become wedge, wouldnt it be non superimposible now ?

[@ProfessorDaveExplains]

i'm not sure what you mean

[@hollow1235]

It doesn't superimpose but the first rule is that if we can cut the molecule in symmetrical halves in any plane so we don't need to check the next rules.

[@simple_pharmacology]

Thank you so much God bless you 🙏 ❤

[@ucf_zn]

supertuper great job better than my dr 10x

[@nandinijojode3030]

why is no one talking about cameraman's talent, i would like to book him :')

[@harishsasankarm9428]

So, can we deduce that at 5:39 , the enantiomeric compounds central Carbon is chiral?

[@ProfessorDaveExplains]

only the one on the left with four different groups

[@kofi8259]

Like your hair dude

[@Franckzzz]

So is it non super-imposable or non super-posable?

[@ProfessorDaveExplains]

Superposable, specifically refers to all elements lining up.

[@Franckzzz]

@@ProfessorDaveExplainsalright thank you

[@somaia_mohsen3315]

please.translate your videos to Arabic language.شرحكك حلو جداًومبسط

[@ProfessorDaveExplains]

i would but i don't speak arabic

[@petesingh9091]

I cant see how you did the 180 degree flip. How can I visualize it better?

[@ProfessorDaveExplains]

you mean with the mirror image to get it to line up? i just spin it like a top around the C-W bond

[@mosaif6688]

please make videos for CSIR NET exam India for Chemical science

[@elenawd5531]

bless

[@باسلفقيها]

are you sure the second compound(at the end of the video) is achiral? because I drew it but it did not fit on the original

[@ProfessorDaveExplains]

the one with the two fluorines? keep rotating it around

[@brahamdagbaloch2146]

Any one 2024😂

[@thefalcica8340]

Hi professor Dave, I have a really urgent question I have a final on Tuesday I would be happy if you answer by then. Is enantiomers the same as chirals? And did I understand right? Chirals have mirror image but if we place it upon it would have flaws?? where as in Enantiomers it has a mirror image and if we place it on is the same??

[@ProfessorDaveExplains]

A chiral molecule will have a mirror image that is its enantiomer, a different molecule.

[@thefalcica8340]

@@ProfessorDaveExplains Thank you so much for your reply. I have one more question are geometric isomers same as cis and trans?

[@ProfessorDaveExplains]

Cis and trans alkenes are examples of geometrical isomers, yes. I think there are other examples as well.

[@rozhyL]

Thank u so much it was helpfull..u haven't mention it in yhis video but whats racemate?

[@ProfessorDaveExplains]

+Roze L a racemate is another term for racemic mixture. 50/50 mixture of stereoisomers that results from a reaction that is not stereospecific.

[@rozhyL]

+Professor Dave Explains thank u😊😌

[@matthewbarnett3540]

for some reason I like the fact that you actually appear in the video instead of just your voice. it makes it easier to learn and i dont know why

[@NoviProleterijat]

I think it's easier to focus when you can watch someone

[@ximelp7268]

I agree. That's why sometimes I prefer him over Sal Khan from Khan Academy. I think that you being able to see all his expressions makes it easier to know what's more important, what concepts relate to each other and to keep you focused.

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He looks like Jesus. Gives me hope for my grade

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Hi Maby its a case of 'Seeing is Believing'?

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And he's handsome

[@iwanttosuceed3565]

Thank you

[@trojanfire772]

this guy best explainer ever , he gets to the point and yet detailed but explains details in way 5 year old can understand and shows examples.. i appreciate u my good sir

[@michellechal4669]

please never stop making videos, they are way too helpful

[@XTheSpartanX7]

I love this, when he used the marker and said the Br is coming out at you and when you rotate 180 degrees the bromine is going into the page everything about chirality just clicked. Bless up homie

[@MsVickiticki]

Guess what, Dave (Professor Dave). Thanks to you I got the highest grade on my exam (we just got the results), and what's soo cool is that I'm the youngest in my class (studying at the university so some are 5-6 years older) and nobody got that grade but me, all thanks to you!

[@MsVickiticki]

actually, you don't have anything to do with the other grades, it's just that I'm so happy that you explained everything so good!

[@ProfessorDaveExplains]

woohoo! congratulations! happy to help.

[@MsVickiticki]

+Professor Dave Explains thank you!

[@stiphenregalario336]

wow hope i could do the same thing for my stereochem exam this coming saturday xd

[@alienware2149]

you explain so "flawlessly" professor dave...appreciate!!!

[@thomasdang4860]

Thank you for visually explaining how enantiomers can't be superimposed! All other books/texts I referenced just said they were unsuperimposable, but never showed how like you did. I was confused... because my thinking was if I treated the image like a picture and just flipped it, it would superimpose, right? Thanks for showing me how it would work in 3-D space... makes complete sense now!

[@BharuRDMessi]

This thing called Isomerism had been a real pain in the ass for me....thank goodness you, the Chemistry Jesus, exist that I'm no longer pulling my hair over this thing, which once ruined organic chemistry in school for me!!! Much love Professor !

[@kristena343walls]

Nice explanation sir your handwriting is also nice.

[@ElizabethRey97]

You explain the stuff i think of and that no one somehow understands nor do I find them on youtube. Thank you

[@ProfessorDaveExplains]

+Elizabeth Rey it's my great pleasure! feel free to email with questions.

[@karunyareddy1458]

Who are Shakespeare teaching chemistry here?

[@eddtru]

I figured out in 3 mins of watching this, thank you Dave

[@THE_BOZO-jz7xo]

JEE WALO ATTENDANCE LAGAO

[@mihaelalakic4573]

My professor at the university couldn't explain it to me for a whole year and you just did it in 7 minutes. King!

[@sahirhemnani7628]

I am earning as a chemistry teacher enough money by watching your videos. Big Thanks to you 😊

[@MrBizarre6000]

8 whole years but this video is still helping lot's like me, absolutely genius...

[@varnamohan2629]

Handsome😍

[@nickydaviesnsdpharms3084]

I was thinking of MDMA which has the wavy line doesn't that mean it's a racemix (racemate)? Have you got a video on that?

[@qendresasahiti4372]

My GPA thanks you!

[@enochkandiah6445]

What a legend, thank you. I'm going to watch all of your "organic chemistry" videoes :)

[@soumyaranjanmeher9861]

Can anyone plz make the mirror image of last compound having( 2 fluorine ) & then rotate 180 degree & try to superimpose

[@noel5544]

just like you the video is so awesome

[@ashishr]

I have a doubt What are super imposable and non super imposable molecules..? Pls someone tell

[@ProfessorDaveExplains]

so two molecules are superposable if you put one over the other and every single atom of each molecule lines up perfectly, therefore making them identical molecules. if they can't do that, they aren't superposable.

[@Makethemhearragtime]

At 3.09 you turn it and the z swaps places ?

[@moshaw563]

You are awesome, thank you for doing these videos.

[@cassc5330]

Would not hate it if you did a video on acid hydrolysis of an ester.

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Awesome ❤️ #hassan4gpat

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You’re respectfully fine

[@Coco-chrispy]

You are the REAL MVP

[@vysakhmshaji8771]

Thank u sir, your explanations are quiet simple. And had given a strong concept.

[@ethanfrank4395]

Great explanations, but fyi it's superIMposable, not superposable.

[@ProfessorDaveExplains]

actually that's a different word! anything can be superimposed on anything else, that just means to place something on top of something else. superposable implies that every element of one item will align flawlessly over the other, which is a condition that would make the molecule achiral when comparing mirror images, so non-superposable mirror images are enantiomers.

[@ethanfrank4395]

Professor Dave Explains oh! Okay then, thanks for pointing that out

[@erickelechukwueze-adikibe1113]

I don't really understand the chiralty part...please help. Thank you

[@Malchus13]

The intro alone was worth the like.

[@oraib7325]

God you man incredible i fuckin understand this totally thank you!!!!

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i love you,you are always helping me thank you so so so much

[@prosp3421]

God bless you. Ur knowledge was truly helpful.

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He doesnt posts any video nowadays😢

[@ProfessorDaveExplains]

Um, I post three videos per week, just as I've been doing for years.

[@anthoniaegbejiogu-okechukw5004]

Thanks so much. This was helpful on my test!!

[@user-yx2dg8tc7p]

he knows a llot abt science talks professor dave explains!!!!!!!!!!!!!

[@alattar4154]

Professor Dave, in that last example that had 2 F's, I understand that there is only 3 unique groups around instead of 4, which does not make it chiral. However, you said there is no way to rotate it so that its superimposable. Well, if you rotated 180 degrees, the OH will be dashed line instead of the triangle, and H was dashed but after the rotation of the mirror image, H is now sticking out with the solid triangle. This now looks different in 3D compared to the original. Am I wrong or is there a mistake here? Thank you prof you are a saviour!

[@ProfessorDaveExplains]

well sure, it's a different perspective, but it's still the same molecule, you just turned it. but the more important point is that because it's achiral, its mirror image will also be exactly the same molecule.

[@alattar4154]

Professor Dave Explains that is very true, it is like looking at it from the other side, it's still the molecule. I just realized that! Thanks a lot, and I especially appreciate the quick reply. You are the most underrated Orgo tutorial channel!

[@meenakshiyadav1850]

DAMN! You're so cute.

[@bobbycruz9290]

Hello, one question, the bromine atom on the molecule that Professor is explaining on 4:16, is it not able to pass from the dash bond to the solid one when rotating its reflection?, and also, with the implied hydrogen atom, would that make it an enantiomer too?

[@hollow1235]

No it won't there are a set of rules that one needs to check to see if those are enantiomers. First one needs to check the first rule and if the first rule says it not an enantiomer you don't need to continue and if says it is you continue and check all the rules relevant to it

[@vahin.r516]

Thank you lord chemistry ganesha

[@ayyamguari6134]

Can you please tell me that if a compound is racemic and have 2 chiral carbons, then it have 4 products?? Becoz in case of having one chiral carbon, it gives 2 products so....

[@ayyamguari6134]

Please answer me🥺🥺🥺

[@azadprasad856]

In the macroscopic example of our hands if we turn the image by 180 degrees and then we find that they overlap! Plz tell How these are enantiomers?

[@ProfessorDaveExplains]

but they won't overlap perfectly! the palm will be over the top of the hand and the top will be over the palm. mirror images and not identical.

[@emanturky9752]

best explainer ever

[@monufz9386]

Do anantiomers word exists? Or my question is wrong