Constitutional Isomers

This organic chemistry video tutorial provides a basic introduction into constitutional isomers. It explains how to draw the constitutional isomers of butane, pentane, hexane, heptane, and octane.
Organic Chemistry - Basic Introduction: • Organic Chemistry - Ba...
Acids and Bases - Basic Intro:
• Acids and Bases - Basi...
Lewis Acids and Bases:
• Lewis Acids and Bases
Nucleophiles and Electrophiles:
• Nucleophiles and Elect...
Hydrocarbons:
• Hydrocarbons - Aliphat...
_______________________________
IUPAC Nomenclature of Alkanes:
• IUPAC Nomenclature of ...
Naming Cycloalkanes:
• Naming Cycloalkanes Wi...
Naming Bicyclic Compounds:
• Naming Bicyclic Compounds
Naming Ethers:
• Naming Ethers - IUPAC ...
Naming Alcohols:
• Naming Alcohols - IUPA...
Naming Alkyl Halides:
• Naming Alkyl Halides -...
________________________________
Naming Amines:
• Naming Amines - IUPAC ...
Van Der Waal Forces:
• Van Der Waals Forces
Boiling Point of Organic Compounds:
• Boiling Point of Organ...
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Organic Chemistry Exam 1 Playlist:
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[@TheOrganicChemistryTutor]

IUPAC Nomenclature - Full 42 Minute Video: bit.ly/3GURyOl Organic Chemistry PDF Worksheets: www.video-tutor.net/orgo-chem.html Full-Length Exams and Worksheets: www.patreon.com/MathScienceTutor/collections Next Video: kzbin.info/www/bejne/ioq4kH2iqtGYg6c

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I find you the best and I search your videos in every topic I don’t understand in organic chemistry

[@user-sk8ei5ss3i]

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[@safaelhony159]

btw to find the number of isomers for the first 7 alkane use C^(n-4) +1 , when n is the number of carbon atoms

[@chemistyfacts]

????

[@chloeelaine1526]

At this point why do I even pay for my college education when I can watch this for free and learn more🥴🥴

[@wsgletschill]

haha for the college degree btw this is in college curriculum? im in india, and this like early days of high school

[@chloeelaine1526]

@@wsgletschillsomething like isomers is in high school but high school barely touches on organic chemistry we only go over a chapter or 2 of Ochem in the us you don’t really need organic chem until college and even then it’s only necessary for pre pharmacy and premeds and chem majors

[@yohany1304]

Super explanation on organic chemistry

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You are a blessing.

[@dixiepena7308]

if you were my prof, chemistry would be so much better

[@aaronkh9378]

For the C4H8 @ 10:45 , shouldnt there be another isomer = 2-methylpropene?

[@dianapena8607]

How do you know how many constitutional isomers a compound has?

[@sarahholland5980]

It's pretty hard to figure out on your own. Ideally your professor would tell you how many they want you to draw on an exam

[@FBWUniverseMode]

@@sarahholland5980 thank you i always wondered

[@rahmeenmujahid8071]

(2)^(no.of carbon-4)+1 Example:If there is a 4 carbon compound like butane then after putting formula it'll be 2 isomers which are n-butane and isobutane Similarly pentane has 3 Hope It Helps

[@lasvegaslincoln1769]

​@@rahmeenmujahid8071 ok but then why in the video at 09:04 he has C8H18 when you put it in the formula 2^(8-4)+1 its 16+1 so it 17 isomers but he drew 18 isomers ?

[@tisambinttowhid7338]

is 2-ethyl pentane possible?

[@redkritter1225]

Hey this is Orgo, pay attention this will 100% be on the midterm.

[@dianatherese2404]

is there a formula to compute how many isomers a compound has?

[@laramaem.florentino4991]

kzbin.info/www/bejne/j4Ozk6uDh5iSi8k

[@syaifunnisap]

It's very useful. Thank you🌻

[@mob.E30]

@4:59 if you put the ethyl group on carbon 2 wouldnt that be another isomer?

[@jonahghazaleh4429]

Yes. I was thinking the same

[@Youngballer739]

same

[@aaronkh9378]

Are you ralking about the bottom right one? If yes, then i dont think so... Cuz if u name it it will stil be 3methylhexane, which is the same as the top right one.

[@ashley2766]

Why can't you put the ethyl on another part of the molecule instead of just the middle? C7H16

[@fernandasiordia793]

this is the best video ever

[@AhmadAlDouri]

Thank you so much (Feb 5, 2024)

[@latifamohamed3614]

It's is so worthwhile

[@kellen4811]

Thank you for what you do.

[@HannyFosuKyem]

Is there a formula for the number of constitutional isomer

[@Treaty2]

Do we only add methyl groups

[@bunnyheart9979]

Sir is there any formula that we can use to find out the number of isomers an alkane has

[@user-wl5lp2oi6r]

Can't we place 2 methyl groups on the end carbon

[@prince_Chukwuemeka]

thanks for this. But we could also have 2-ethylpentane?

[@nisrinahuwaida-g-g375]

the IUPAC name of 2-ethylpentane is 3-methylhexane

[@Antweezy]

1:23 what is the IUPAC name of this? Neopentane isn't it

[@oscarmantecon5354]

Pentane on the upper left and 2-methylbutane on the right

[@Antweezy]

@@oscarmantecon5354 Sorry, i meant bottom left.

[@amosw766]

@@Antweezy 2,2-dimethyl pentane adheres to IUPAC, but it might have a more colloquial name that I'm not familiar with.

[@robertowisconetti2732]

no dumbass. thats a trivial name

[@gladysebunalexia]

Thank you so much !

[@tianhanhuang4618]

4:42 why isn't 2-ethylpentane an isomer as well?

[@christopherblueitt6660]

Putting the ethyl on carbon 2 would make the carbon chain shorter than 5. It’s basically no longer pentane because the continuous carbon chain would be 4 carbons instead of 5.

[@Frenzy_911]

2,3 Dimethyl Pentane . How many isomers does it has ??

[@valentinamellini3322]

how would you figure out how many constitutional isomers for C4H9F?

[@syedmerajahmed7347]

Why is neo-pentane not a constitutional isomer of pentane?

[@reemhisham8994]

Can someone recommend a book for studying the basics of Organic chemistry?

[@student849]

In C6H14 we can't add the isomer 2,2,2-trimethyl propane?

[@paysonkeown2960]

If it existed, you could.

[@tyche3576]

how do you know which isomer is the most stable or least stable?

[@FBWUniverseMode]

did you find an answer?

[@4theloveoffood435]

In regards to the C4H8 the cos and trans examples the hydrogens seem to had more than 4 carbons. Do we not count the hydrogen added to the structure ?

[@marisa0313]

Maryann Chiang that’s what I’m wondering as well..?

[@danicamagistrado7065]

in 2:24 is it really 2-methylpentane or it should be 2-dimethylhexane, because C6H14 is known as hexane??... Just asking po hehe

[@desteny7559]

Does the amount of hydrogens have any say in the different nomenclature structures there will be?? For example C8H18 when you said there was 18 different structures?? Is that consistent with all constitutional isomers or that example only? Thanks :)

[@amosw766]

That example only I think. It's not a linear scale. Ie. If you had C12H26, there would be more than 26 isomers. I think.

[@hinawykhan2440]

For C7H16 there were 8 isomers. No relation dude

[@rameshnadhamuni4594]

Is there any formula to find the number of isomers ?

[@Andrew-kh7rz]

Nope

[@Joeythegoats]

Yes there is! Go search "Komali mam isomerism trick" it helped me

[@tom_winguill]

@@Joeythegoats thank you😀😀

[@purple8527]

Thanks 🌷🌷

[@rameshnadhamuni4594]

Or any relation between the no of hydrogens and no of isomers . Can u Pls ans sir

[@hinawykhan2440]

There is no such relation bro

[@secretgarden8142]

Thank you (Fri 18 Dec 2020, 3:02)

[@akashsunil7464]

why cant u add propyl to the group

[@akashsunil7464]

why only ethyl and methyl

[@point8192]

it does get pretty confusing and i was wondering the same thing. but it became clear after his C8H18 example. this is because if you attached a propyl it would form a longer carbon chain and be identical to the other isomers you already counted. this would sometimes happen if certain additions of ethyls.

[@emma-we6lo]

Nice bro

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king

[@gamingwithM]

I think this will make me crazy

[@user-sk8ei5ss3i]

I would suggest you make your videos a little longer, thanks.

[@xOxAdnanxOx]

at 2:20 the structure on the right type, its still hexane ( 6Carbon ) isn't? how pentane?

[@rwayle]

Hexane means there are 6 carbon atoms all in a row, that one has 5 in a row so it's parent carbon chain is pentane.

[@xOxAdnanxOx]

Ryan W thank you .. it’s now clear