OChem 05 - Newman Projections

[Melanie1502]

Wow thanks's so much!! 

[NeftaliPR]

nice

[MoeHidan]

Thanks!



[ssj4newUser]

i like her so much but she only got 5 videos...:(

[djabfalo]

@7:02 there is a slight representation. The bond to the methyl group on top is not supposed to go to H3, but should go to C. So instead of saying CH3, it is conventionally right to say H3C. (that places the bond on Carbon.

[aaron2009ish]

Thank you! You know whats unfair, when this is in the ACS final but we didnt even cover it in class:(

[efuntola]

i can see the fifth carbons in there and i don't still get why its in there.

[adijatsab]

I thought you were drawing butane, but the picture turned out to be pentane, didnt it?

[ynkrock7]

@adijatsab Nope there is only four carbons there, the back and front carbon, and the two methyl groups on each.

[qyet121csx]

thanks, this vid helped quite a bit!

[rabighising]

nv

[amalianandagoda88]

this is really gud.i could understand it well than in my university lectures..

[Dredangel32]

what about trans?

[idealizedblue]

Oh for the love of god, thanks so much for this video

[bulletformygizmo]

is it the gauche formation everytym there is 60 degrees between the 2 heaviest atoms? in this case fig 2? like is 60 degrees the set figure between the heaviest atoms that characterizes the gauche formation ??

[MathandScienceFTW]

@bulletformygizmo yes that is correct. 60 degrees is what is used for simplicity. Anytime the 2 bulky groups are between 0 and 180 degrees (or 180 and 360) they will be gauche. HOWEVER, when the rotation is exactly at 120 or 240 they are considered eclipsed. They are TOTALLY eclipsed when the bulky groups are RIGHT on top of each other (0 degrees).

[bulletformygizmo]

@MathandScienceFTW thank u soo much for ur help realy appreciate it u wer mre help then my lecturer,il be recommending ur vids to my classmates.thanks again,and thanks for replying,

[MathandScienceFTW]

@bulletformygizmo I REALLY appreciate that!!! Thank you :D

[thebubbliecat]

Please post more videos on ochem!! Your explanation is thorough and easy to understand. I wish you were my chem professor...

[MathandScienceFTW]

@thebubbliecat Thank you :D

[ilovemyprs]

Thank you SO much! I've had a hard time understanding this (:

[spreal3030]

Very clear.  Thank you!!

[MathandScienceFTW]

@spreal3030 you're welcome :)

[crm3q]

You are awesome! Are you a professor

[MathandScienceFTW]

@crm3q I love teaching and I'd like to be a professor one day, however right now I am an engineer :)

[kaizoku2king]

I am teaching myself Organic Chemistry in preparation for the fall and this one concept did stump me. Your video however was very helpful and wonderfully illustrated how to draw a Newman Projection. I do have one question though. Are anti-conformations also considered stagged since the bonds are as far apart as they can be?

[dmsthf9]

wow... why cant teachers be like this

[LaminaDensa]

Thank you so, so much!

[khaledmousa92]

thank you very much , and i hope if you be my professor

[samanbandana]

tell me if im wrong but anti is the most stable form right? and totally eclipsed the least stable

[MathandScienceFTW]

@samanbandana That's correct! Anti is the most stable because the bulky groups are the farthest from each other (antiperiplanar).

Therefore, it is in it's lowest energy state when it is anti (because it is happy with its conformation) and in it's highest energy state when it is totally eclipsed (because it would want to get out of that conformation).

[samanbandana]

@MathandScienceFTW thank you for your help :)

[MathandScienceFTW]

@samanbandana yw :D

[nenshi623]

yea seriously, so much better than my professor! thank u very much!

[llivia56]

wowwww! I found this to be extremely helpful!!!!! Thank you so much!!!!!!

[putcha12]

This is explained very well...thanks!