You make Organic chemistry so easy. For 5-6 years I had been hating it but you make it so easy and the concepts become crystal clear with those model sticks. Other teachers just tell you what to do but you tell why to do that particular step. Thank you so much!
Holy cow, this is so much easier than the method we were taught in class and in our textbook. I’ll definitely be watching you from now on so I can get through this class. Thank you very much for the tutorial!
i have spend, without kidding, TWELVE university lectures based on this topic and there was not a single word about swapping, nor it was explaied this nicely. this is amazing explanation!!! ty so much!
13:42 The second swap,why did i chose these two?. Because i felt like it. I loved the way you said that. You're a life saver!. I've no words to describe how much i respect you. May God bless you and give you more and more success.
Why is it that no mirror images were formed at 3:30-3:35 when you were comparing two of the "same chiral" molecules and trying to make mirror images? I'm a bit confused because in my organic chemistry textbook, it says "Everything has a mirror image." Why is it that enantiomers are able to form mirror images, but two identical chiral molecules cannot?
By definition, a mirror image is one where a structure is reversed over a plane of reflection. A mirror image is never exactly identical, but flipped in space. Think of me taking a playing card that is face up on a table, turning it face down, but then turning it right back up again. Two flips of the card, and I'm back to where I started. No longer do I have a flipped mirror image of the card.
Watching this in 2024 and i cant explain how much your playlist on chirality and stereochemistry has helped me! Cleared all my doubts. Thankyou so much for this wonderful explanation
I'm so glad to hear that a video I made so long ago is still helping you. Given that the basics of organic chemistry haven't changed, these concepts still hold true even 11 years later
Thank you so much. There is no other video or document I could find that explained a simple way of assigning configuration when the lowest priority group is not dashed or wedge.
amazing!!! no words to compliment your teaching. I feel how much lucky I am to getting able to see your videos...highly recommended one. The best version among any other Ochem videos
you are the best, and your video literally saves my life!!!!! I hope you're keeping it up, continue to post more of useful videos, all the best from me.
this video is akin to when Tom gives Ron an iPod for his music and Ron says, "TOM PUT ALL MY SONGS ON THIS RECTANGLE! THIS IS AN EXCELLENT RECTANGLE TOM!" This is an excellent video Leah.
6:49 My question is say for example what if the dashes and wedges are the same but Cl is written where the Br is and the Br is in the place where the Cl is. Or will it always be written like starting from the bottom left= straight line, out of the page, into the page and top will always be straight line? It's like if someone wrote it like starting from the bottom left- Cl, Br, H with all the line and dashes the same it would suddenly become R
I don't know if I'm quite following your question. If you swapped the Br with the Cl, that would be 1 swap for the chiral center which changes its configuration, per the swap method. You could also draw the same molecule from a different perspective as long as you maintain the tetrahedral character of the molecule in space. If you have additional questions on the specific examples in this video, feel free to contact me through my website at Leah4sci.com/contact
Sorry like say that the cl and br have the same wedges and dashes but I was wondering if someone writes it at the beginning with the CL in the br place and the br in the cl place. Like it's sometimes strange because people sometimes write the wedges and dashes in different places or there is a pattern where it will always be written with the wedge in the middle and the dash on the right?
At 9:58, how do you know the initial configuration is S? Wouldn't you go clockwise from 1, bypass 4 to get to 2 then three? How do you know that you would go counterclockwise (S), bypass 3 to 2 and back to 3?
You're welcome! I'm having trouble understanding your question or which Step 2 that you're referring to. If you still have a question, contact me through my website with a time stamp from the video at Leah4sci.com/contact
On this particular topic, this is the best video on the internet.
thanks!
By far.
YES
For real tho!
For real
ICS 2023J attendance here 😊. Once again thank you Leah .
You’re welcome
you Know what after 2 weeks of reading books i didnt understand how to do but u in 17 minutes u made my life easier thank u so much u are the best
You're so very welcome!
Someone who actually knows what they are talking about. Thank you for making my life 100x easier!
Thanks Bianca! Glad to help! And you are welcome!
You make Organic chemistry so easy. For 5-6 years I had been hating it but you make it so easy and the concepts become crystal clear with those model sticks. Other teachers just tell you what to do but you tell why to do that particular step. Thank you so much!
I'm very glad to hear that! You are very welcome and I hope my videos continue to help you!
Ukjhuuuuuuuu
GIRL THIS IS AMAZING, YOU MADE THIS 100 TIMES EASIER ILYYYY
So glad to hear this! Thanks!
Holy cow, this is so much easier than the method we were taught in class and in our textbook. I’ll definitely be watching you from now on so I can get through this class. Thank you very much for the tutorial!
You're so very welcome! I'm happy to help make it easier for you!
i have spend, without kidding, TWELVE university lectures based on this topic and there was not a single word about swapping, nor it was explaied this nicely. this is amazing explanation!!! ty so much!
I am so happy to help fill that gap for you, you're welcome!
This is the best explanation I’ve ever encountered on TH-cam. She even beats the Organic Tutor guy on this topic.
Glad you like it!
Leah does so much hard work to make us understand these topics ..... ❤️😁.....Thank you for you're efforts ......
You are so welcome!
Works really well you can watch t speed up or skip , play skip ,play to save time
Exactly!
You made it incredibly simple to understand whereas others made it so difficult. Thank you so much.
You're welcome! Always glad to help!
wow, this has literally saved me. thank you so much!
You're so very welcome!
I’ve been studying for hours and finally this makes it all make sense! Thank you!
Glad the video helped you understand the topic better! You are very much welcome! :)
13:42 The second swap,why did i chose these two?. Because i felt like it. I loved the way you said that. You're a life saver!. I've no words to describe how much i respect you. May God bless you and give you more and more success.
Thank you very much for your kind words! I'm glad you enjoyed the video
you're doing more to me. I am currently in Orgo class, and this is all i use to get my work. done
Nice! So glad this helps you clear things up!
No words can express how much sense this made. Thank you so much
You're so welcome! Glad it was helpful!
I never really comment on youtube videos but I have to say that you are an amazing teacher. I love how easily you explain such complicated ideas.
Aww thank you, I really appreciate that!
I’ve seen many science tutors/teachers on TH-cam and i have to say that you are the best I’ve seen. Super easy to understand. Thank you
Thank you for the nice words Tony! Always glad to help! You're very much welcome.
Why is it that no mirror images were formed at 3:30-3:35 when you were comparing two of the "same chiral" molecules and trying to make mirror images? I'm a bit confused because in my organic chemistry textbook, it says "Everything has a mirror image." Why is it that enantiomers are able to form mirror images, but two identical chiral molecules cannot?
By definition, a mirror image is one where a structure is reversed over a plane of reflection. A mirror image is never exactly identical, but flipped in space. Think of me taking a playing card that is face up on a table, turning it face down, but then turning it right back up again. Two flips of the card, and I'm back to where I started. No longer do I have a flipped mirror image of the card.
miss you saved my life with these videos thank you so much i had such a hard time understanding these with regular lessons
So happy to help it make clearer for you!
Thank you so much Leah🙏
You're very welcome!
Thanks, Leah. Just about 4 years later and your work is still helping people. Odin bless you and the age of information. :-)
:) Glad to still be helping
GOAT among Organic Chem Teachers
Thanks!
u are awesome already failed once in organic ...u absolutely saved my life keep up with the good job...good luck take care
You are so welcome!
you are an amazing teacher , thank you so much i hope all the success in the world for you :)
Thank you so much for your kind words, happy to share!
Watching this in 2024 and i cant explain how much your playlist on chirality and stereochemistry has helped me! Cleared all my doubts. Thankyou so much for this wonderful explanation
I'm so glad to hear that a video I made so long ago is still helping you. Given that the basics of organic chemistry haven't changed, these concepts still hold true even 11 years later
Wow! So much easier than what I was taught in a lecture today. The professors need to watch your videos!
Wow, thanks! Always happy to help!
every other video on this topic confused me even more, but you made it so simple. you are a life saver!!
I'm sorry to hear that you've been confused, but so glad to help you understand!
u r the best ,,,u saved my life thnks a lot ,,,much love from an algerian med student
Glad to have helped! You're welcome.
You are such a blessing for students ❤
Wow, thank you so much!
Thank you teacher for the teaching video from 9 years ago. It helped me a lot.😄
You're very welcome, so glad it helped!
This is Golden! You are an epitome of an effective teacher.
Thank you :). don't forget to subscribe.
This is really awesome i'm gonna ace my test on Saturday just because of your videos. thank you so much.
You're very welcome! I hope your test went well!
not as well as i expected but i tried my best. thanks again
maam you beat every you tube teachers
Glad my resources are helping!
Thank you so much. There is no other video or document I could find that explained a simple way of assigning configuration when the lowest priority group is not dashed or wedge.
You're very welcome!
amazing!!! no words to compliment your teaching. I feel how much lucky I am to getting able to see your videos...highly recommended one. The best version among any other Ochem videos
Thanks SO much for your kind words and recommendations. And you're very welcome!
I have no word !!!! What an explanation what a trick?!!
Glad you like it!
How can I ever thank you enough for all of these videos
Share the channel to your friends /classmates :)
you are the best, and your video literally saves my life!!!!! I hope you're keeping it up, continue to post more of useful videos, all the best from me.
Thank you for your kind words! I'm glad I could help!
You, deserve a medal Leah
Oh wow, thanks!
omg Leah you are the GOAT! I am elated over learning this trick, thank you so much!
You're very welcome!
A legend, a God. Thank you so much
Oh wow, I'm just a human, but thanks so much!
YOU ROCK!!!I searched a lot... didnt get such a detailed and understandable explanation!!1
Glad you enjoyed it!
I just subscribed and started working on your practice quiz. Thank you.
Awesome! How did you do?
One of the best videos on youtube
Aww thanks so much!
idk how to thank you, you saved my life
Aww you are so very welcome, I'm happy I was able to help!
You are incredible!!! I was confusing myself for hours over this and you just made it so simple
I'm so glad I helped make it easy for you!
You are a lifesaver! Thank you so much
You're welcome! Always glad to help.
Most helpful, thorough video I've seen thus far on the topic. Thank you.
You're very welcome!
Thanks you, I have seen 3 different videos on this topic and this one is the best by far!
Glad it was helpful!
you're in my "top 1" list of TH-camr's
haha thank you!
😱😱😱 Stereochemistry has never been this easy . Much appreciated ♥️♥️♥️
You're very welcome!
omg i was struggling with this topic for such a long time but this video made sooo much sense!!! thank you so much omg
I'm so happy to clear things up for you!
Why couldn't you have been my O-Chem professor!! I'm so glad you decided to make a TH-cam channel!!
That's why I did it, so I could help more than just one class!
a very good method of the R/S models ! Thanks Leah !
You're very welcome!
I RARELY comment on videos but I hade to thank you for this. keep up the good work:)
Thanks so much!
Absolutely brilliant, Leah you are awesome!
Thank you!
T- 8 hours amd 15 minutes to my exam and I can finally sleep thanks to Leah
You're welcome! :)
Amazing. Thank you so much for the excellent videos on organic chemistry! They are keeping my medicine dream alive
You're welcome, so happy to help!
your are the best leah. thank you so much!!
you're very welcome!
I can't express how happy I am for finding this channel... I have a sudden burst of "Hope" now... God Willing.... but I'm still a little scared now :/
I'm glad I'm helping you to understand! Look at some of my other videos to help you understand more of what you are trying to learn.
Leah ma'am u r perfect, teacher no one was able to clear my doubt
Glad I could help
Are your all videos free on ur site
Unbelievably simple and conceptual. Thanks a ton!
You're very welcome!
Thank you so much. Your videos are really good. My concepts are really strong now.
You're so very welcome!
this video is akin to when Tom gives Ron an iPod for his music and Ron says, "TOM PUT ALL MY SONGS ON THIS RECTANGLE! THIS IS AN EXCELLENT RECTANGLE TOM!" This is an excellent video Leah.
hahaha thanks?
Angel Of organic chemistry ❤️❤️❤️
Love your unique approach 🙂.
Thank you so much ma'am .
God bless you
Aww thanks so much for your kind words, and you're welcome!
perfect and very simple method for r s naming.
awesome lecture
Thanks! i hope it helped! Don't forget to subscribe. :)
Thank you Leah!!!! you have saved many lives SALUTE!!!
You're welcome!
I FINALLY understand this because of YOU💜 thank you so much leah!!!!!
Awesome, happy to help!
Thank you for all your orgo videos.. you really clarify and explain everything extremely well!
You're welcome; I'm so happy I could help!
words cannot express how I feel atm. :')
THANK YOU LEAH!!
You're so welcome!
Leah, I LOVE YOU THANK YOU
You're welcome!
Its very good to understand how to assign R and S configuration.
Glad it helped :)
U deserve to be more than professor i mean it keep it up
Thank you so much!
This is straight up magic 😍
Awww, thanks!
Your explanation is marvelous!!!! It`s superb...Thank you very much.
You're welcome! Glad to help!
Awesome for MCAT review... i love your emphasis on "time consumption" thank you!
You're very welcome!
6:49 My question is say for example what if the dashes and wedges are the same but Cl is written where the Br is and the Br is in the place where the Cl is. Or will it always be written like starting from the bottom left= straight line, out of the page, into the page and top will always be straight line? It's like if someone wrote it like starting from the bottom left- Cl, Br, H with all the line and dashes the same it would suddenly become R
I don't know if I'm quite following your question. If you swapped the Br with the Cl, that would be 1 swap for the chiral center which changes its configuration, per the swap method. You could also draw the same molecule from a different perspective as long as you maintain the tetrahedral character of the molecule in space.
If you have additional questions on the specific examples in this video, feel free to contact me through my website at Leah4sci.com/contact
Sorry like say that the cl and br have the same wedges and dashes but I was wondering if someone writes it at the beginning with the CL in the br place and the br in the cl place. Like it's sometimes strange because people sometimes write the wedges and dashes in different places or there is a pattern where it will always be written with the wedge in the middle and the dash on the right?
Your swap method is brilliant - thanks Leah!
You're welcome, happy to help!
Your channel is a gold mine to me thank u!!!!!!
You're very welcome, so glad you enjoy it!
these videos were just what I needed !
thanks a lot ma'am
I love your videos a lot
You're so welcome, happy to help!
Such a clear explanation! Thank you!
You're very welcome
U r awsome ... u r really great teacher... lov this ,, hats off ... u r blessing for us
Thanks so much!
Thank you so much! I´ve been trying to understand this all day! I finally understand! The swap method is awesome!! :)
I'm glad I could help!
I love you Leah4sci thank you!!! I love the swap method it's so cool
Glad you like it!
Honestly, you saved my life!!
that's hugeall the best to your studies!
wow these videos just saved my life
Glad I could help!
best video in my life , amazing method
Glad the video helped! Thanks!
This is really useful, thank you v.much
You're very welcome!
you are an amazing teacher thank you so much !!!
aww thanks and you are very welcome!
Keep it up ma'lady. Great videos that nail down tough concepts.
Happy to help!
6 years later and still saving lives
Aww thank you!
Thank u so much maam ...u r really a very good teacher
you're very welcome
you are amazing teacher!!
i have othing to say ! u r always #1 instructor
Aww thanks!
Life saving😭 thank God I found your video 🤕
You are most welcome Sheza :)
At 9:58, how do you know the initial configuration is S? Wouldn't you go clockwise from 1, bypass 4 to get to 2 then three? How do you know that you would go counterclockwise (S), bypass 3 to 2 and back to 3?
So since 2 in in the back initially, skip it and follow the order 1-3-4?
You cannot bypass #4 unless it's down and into the page / in the back
YES THANK YOU! THIS IS WHAT I NEEDED
you're welcome! :)
Thankyou so much for the explanation. i was unable to understand it from any book.
You're welcome! :)
This is so helpful thank you! But I have a question about step 2. Why do you have to get rid of the enantiomer to find the R/S configuration?
You're welcome! I'm having trouble understanding your question or which Step 2 that you're referring to. If you still have a question, contact me through my website with a time stamp from the video at Leah4sci.com/contact