This entire ochem series is so incredibly helpful. Thank you!
@ChadsPrep Жыл бұрын
Glad to hear it's helping you out Mary!
@RazaUllah-t3xАй бұрын
A great teacher across the globe, indeed!
@ChadsPrepАй бұрын
Thank you
@tomasquintero49113 жыл бұрын
This video restored my hope in being able to understand stereochemistry. Thank you!
@ChadsPrep3 жыл бұрын
You're very welcome Tomas! So much vocabulary in the chapter and then there are the ways we recognize the different isomeric relationships all of which can make it very complicated. Glad you found this helpful!
@kaushikumarihami19822 жыл бұрын
Hi Chad. I dont know how much I should thank to you for making very convincing amazing video. I taught this yesterday at my class. I was so overwhelmed, cuz I got nothing there yet the confusion. But you made me become confident in this section. So thanks to you I might face my exam end of this month with confidence. Hats off for you kind, generous good deed
@mountcarmel71162 ай бұрын
My OC professor doesn't trust anyone but you. Good job!
@ChadsPrep2 ай бұрын
Thank you
@RazaUllah-t3xАй бұрын
I am also trusting on Teacher Chad's teaching.
@ChadsPrepАй бұрын
@@RazaUllah-t3x Happy Studying!
@Peegeewannabe11 ай бұрын
don't know what i'd do without you mr. chad !!! seriously, thank you so much.
@ChadsPrep11 ай бұрын
You are very welcome.
@kassandracarrillo9816 ай бұрын
Thank you Chad. I have been struggling by learning with just my professors lectures, and you have changed my life. You definitely accomplished your goal of making orgo chem enjoyable! it feels like a fun game now and just trying to understand its rules. Without you I wouldn't be where I am today. You are amazing!!! you inspire so many students to keep learning !
@ChadsPrep6 ай бұрын
Glad the channel is helping!
@SewueseVivian9 ай бұрын
I just love it when you say life is good. You make life seem good by just breaking all of this down in simple terms one can understand. Thank you so much💯💯💯
@ChadsPrep9 ай бұрын
Glad to hear it - you're welcome and Thank You.
@oshinshukla85273 жыл бұрын
This is so helful! i couldn't thank you enough. I hope more people find your channel, you are so underrated
@ChadsPrep3 жыл бұрын
Glad it was helpful, Oshin - thanks for your comment!
@Jennifer-pi6ty4 ай бұрын
Thank for taking the time do make this video!!! It helped so much😊
@ChadsPrep4 ай бұрын
Very welcome!
@jocelynekoudou51742 жыл бұрын
Another wonderful video! Seriously, thank you so much for all you do, you're actually making these concepts fun to learn!
@ChadsPrep2 жыл бұрын
Glad to hear it, Jocelyn - Happy Studying!
@idek6525 ай бұрын
Chad. Thank you so much for all you have done! Your videos are of an amazing caliber and you have done an excellent job of helping me with orgo. May God bless you and keep you safe
@ChadsPrep5 ай бұрын
Thank you for such kind words - He does and hope the same for you!
@user-pj5bk7ds8u5 ай бұрын
Thank you for the explanation of "Meso" 👍 Enjoyable learning time 👍
@ChadsPrep5 ай бұрын
You bet - glad it was!
@_leonora_a64004 ай бұрын
I am honestly so grateful, I came across your page. I have exams soon and I have now gained the confidence. Thanks a lot!!!
@ChadsPrep4 ай бұрын
Glad you found us!
@fereyal10 ай бұрын
I love these incredibly helpful videos... thank you so much Mr. Chad😁😁😍
@ChadsPrep10 ай бұрын
You're welcome - Glad you do!
@suhaylakamarudheen704Ай бұрын
Hi Chad! Could you please explain why you flipped the molecule at 5:20 (the blue drawing)? Did you flip it, so we can see that they both have wedges (hence their enantiomers)? But the ones on the bottom are diasteriomers as they’re not superimposable images to the molecule? (Ie. they have one wedge and one dash) Thank you so much Chad. I’ve been watching your videos since I was in my first year of undergrad!!! My favourite channel on KZbin!
@ghazalmehrvarz50122 жыл бұрын
I feel bad that I have missed your channel so far :( I coul've saved a ton of time and confidence.
@ChadsPrep2 жыл бұрын
Glad you finally found us, Ghazal - hope it helps you now. Happy Studying!
@christophefreslon24885 ай бұрын
Thanks for this very eductionnal lesson...even if you speak really fast for a non-native speaker...but that's surely the testimony of your passion for chemistry :-) By the way, I like your tee-shirt, you can only be a good man with this 😀
@ChadsPrep5 ай бұрын
Thank you for your kind words, and if my fast paced passion for chemistry gets too fast, slow down the playback speed under the settings. Happy Studying!
@karinaburgess39899 ай бұрын
Getting A’s because of this invaluable content. Thank you x1000
@ChadsPrep9 ай бұрын
Great to hear - You're welcome x1000!
@Bulayla14262 ай бұрын
Congrats on 100k
@ChadsPrep2 ай бұрын
Thank you!
@VerenaKing2 жыл бұрын
A perfect explanation! Thank you!
@ChadsPrep2 жыл бұрын
You're welcome, Verena!
@cfskotbk982310 ай бұрын
Love this guy he’s the only thing getting me through ochem right now 😂
@ChadsPrep10 ай бұрын
Glad the channel is helping you!
@jessicaneamtu905310 ай бұрын
Thank you for such a good explanation!
@ChadsPrep10 ай бұрын
You're welcome - Thanks!
@rebeccaobewu5980 Жыл бұрын
This was really helpful thanks 😊
@ChadsPrep Жыл бұрын
Glad to hear it, Rebecca - you're welcome!
@mahaalbreiki919810 ай бұрын
Thank you so much!!!
@ChadsPrep10 ай бұрын
You are most welcome.
@Crazymachin3gun8 ай бұрын
thx
@ChadsPrep8 ай бұрын
yw
@user-in6jz8ik6y7 ай бұрын
you are >...my whole proffeser
@ChadsPrep7 ай бұрын
Glad the channel is helping you.
@radicalpisces10 ай бұрын
why are the R AND R for bromine and S and S still enantiomers?
@komalchahal96719 ай бұрын
@15:12 isn’t the molecule on lower left side is R and S, when configurations are not matched?
@jaiagrawal9963 Жыл бұрын
I have a doubt at 15:25 those two compounds are enantiomer even though they have a center of symmetry. Why?
@bethanyharrison331010 ай бұрын
Question for you sir: Imagine if we’d been looking at the mirror image (through the plane of the board) of the very last example (which was (2R,3S)-2-chloro-3-methylhexane just as a reminder). This would render the stereochemistry 2S and 3R. So my question is: do we now list these numerically or alphabetically in the name’s starting parenthetical? (I’m suspecting alphabetical since IUPAC loves the alphabet)
@moawiahalbasyoni6229 Жыл бұрын
thank you man i love you
@ChadsPrep Жыл бұрын
You're welcome!
@MrYahya01013 жыл бұрын
You said diastereomers are those that are not mirror images. Would that include the same molecule with a rotation around one of its bonds for example I think in cis trans diastereomers, there is only rotation and no inversion of configuration? What about the same molecule (no rotation, no inversion). Would that be its own diastereomer? Thank you.
@MadunaTjeketsi Жыл бұрын
you are the best
@ChadsPrep Жыл бұрын
Thank you.
@Kenzo_254 Жыл бұрын
When you talk about calculating number of stereisomers do you mean number of enantiomers? Because you have got me mixed up.
@user-uu2st6pj3l3 ай бұрын
Goat
@ChadsPrep3 ай бұрын
Thank you
@jibraankhan96673 жыл бұрын
Is blue structure of (2R,4S)-2-bromo-4-chloropentane identical to the structure with two hash bonds @ 5:40?
@shim525 Жыл бұрын
Sir, I have a question for meso compounds. Cis-1,4-dichlorocyclohexane is a meso or not? It has two stereocenters in the molecule with a plane of symmetry and its mirror image is superimposable, but it does not have any chiral centers in the molecule. In this case, is it a meso or not?
@reydeleon4091 Жыл бұрын
For your question, it would just be achiral and optically inactive. For a meso compound, there must be both the presence of chiral centers and a plane of symmetry. In this case, there are no chiral centers to begin with so it is just achiral. Hopefully this answer helps.
@benjaminhogan31573 жыл бұрын
***love*** better than like
@ChadsPrep3 жыл бұрын
Thanks for the comment, Benjamin!
@MisterJ3410 ай бұрын
can you explain at 23:33 when you did R&S how you found that, its tripping me up a little, please and thank you
@ChadsPrep10 ай бұрын
No problem - so at this point we are looking at the left carbon with Br attached we assign priority based on atomic number so Br = 1, the top carbon is number 2 (because it is closer to the next Br atom than the bottom carbon, bottom carbon = 3 and the H = 4 if you trace with your finger or connect with a pen going from 1 -> 2 - > 3 you are moving clockwise or make in a 'right' (R) turn. So its R, the other carbon makes a left turn = S. Hope that helps!
@ChadsPrep10 ай бұрын
check this video if you need a refresher on assigning R and S kzbin.info/www/bejne/pGrQiImDZbibis0
@MisterJ3410 ай бұрын
@@ChadsPrep i got a B+ on my test your videos are amazing
@ChadsPrep10 ай бұрын
@@MisterJ34 Excellent and Kudos!
@catar5602 Жыл бұрын
Thx
@ChadsPrep Жыл бұрын
You bet!
@MrYahya01012 жыл бұрын
Hey Chad, I assume when rotating the molecule around to see if it has a plane of symmetry, one shouldn't rotate in a way that changes the configuration right? Like, rotating around a chiral carbon may change the configuration and thus the R:S ratio of 1:1? Or does rotating around a bond typically not affect the configuration?
@ChadsPrep2 жыл бұрын
Great question Youssef and your intuition at the end was correct! If you're just simply rotating around a bond then it won't change the configuration. Nice!
@MrYahya01012 жыл бұрын
@@ChadsPrep Thank you!
@ChadsPrep2 жыл бұрын
@@MrYahya0101 You're welcome!
@MrYahya01013 жыл бұрын
If you have 3 chiral centers could that still be a meso compound?
@ChadsPrep3 жыл бұрын
Yes! It has to have at least 2 and the most common examples you're likely to see have 2 chiral centers but the key is that it has to have AT LEAST 2. Hope this helps!
@MrYahya01013 жыл бұрын
@@ChadsPrep But if it has 3 then R+S wouldn't be in same ratio, so it would be optically active no? I also wanted to ask you about the cyclohexane you drew. You drew cyclohexane and said that it has plane of symmetry so it has superimposable mirror image. When you draw the mirror image do we consider the configuration of stereocenters to be reversed, eventhough they are not chiral centers? For non-superimposable mirror images, you can just say that the chiral centers were reversed, but superimposable mirror images have no chiral centers, how would you identify them? Thanks.
@ChadsPrep3 жыл бұрын
You're exactly right Youssef, meso compounds are only possible with an even number of chiral centers. But they can exist with an odd number of stereocenters. Consider 1,2,4-cyclopentanetriol. Carbon atoms 1 and 2 will be chiral centers. Carbon atom 4 will be a stereocenter but not a chiral center (you can't assign it R/S). If carbons 1 and 2 have opposite configurations (one R and one S) it will be a meso compound. My bad but hope this helps!
@ChadsPrep3 жыл бұрын
When you draw a mirror image the configurations of stereocenters won't necessarily be reversed. I haven't seen this come up before but if I consider the cyclohexane example and other such similar examples the stereocenters aren't reversed in the mirror image. I really want to say that will always be true, but the use of the word ALWAYS is dangerous. But I'm leaning that direction. Hope this helps!
@MrYahya01013 жыл бұрын
@@ChadsPrep Thanks Chad! So some molecules will have plane of symmetry and still not be meso compounds (cyclohexane), and some will not have a plane of symmetry (like the one at 18:30) and still be meso compounds? I mean doesn't that just mean we shouldn't use "plane of symmetry" to identify meso compounds?
@johnscheller26972 жыл бұрын
goat
@ChadsPrep2 жыл бұрын
Thx!
@ablordestepheneyram99372 ай бұрын
Talks too fast😢
@ChadsPrep2 ай бұрын
I get that a lot - you can slow down the playback speed under settings. Happy Studying!
@namchansawang83292 жыл бұрын
Would you say your left hand and right butt cheek would be trans? 😅