How many isomers c4h11n nmr

authormessageking-spirit



Registration date: 09/30/2004
Posts: 1

Posted: Sep 30, 2004 18:19 Title: all isomers of c7h16!

hello people, i'm new here and tomorrow we'll be writing a chemistry test on the isomers of c7h16! (all)

so i have to admit that i'm a real chemical "dödel" and i have no perspective.


So if someone is familiar with that, I would be very grateful if he could write them all down (knows how many there are) and maybe also the structural formula if net makes too much trouble.


so you would definitely be very grateful for your help.

greeting + MfG

spirit
sunny
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Registration date: 07/08/2004
Posts: 734
Place of residence: Hamburg
Posted: Sep 30, 2004 10:48 PM Subject:

phew .. finally it works .... i hope i'm not the only one who has problems with the board ...

so there are 9 isomers of heptane ...

since I don't feel like recording them all ... just have a look >> here << in the pdf on page 4, all 9 are shown.
Bluemagic



Registration date: 10/30/2004
Posts: 5

Posted: Oct 30, 2004 6:36 PM Subject:

Thanks, helped me a lot
teggers
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Posted: Nov 06, 2004 10:40 AM Subject:

the side is good i should look for the isomers of c7 h16 for school actually by trying it out so it went faster
zigzags
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Posted: Nov 07, 2004 7:54 PM Subject:

I also thank
int
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Posted: Nov 15, 2004 5:29 PM Subject:

thank you =)
guest






Posted: 02 Dec 2004 17:52 Subject:

thanks
Cady



Registration date: 12/12/2004
Posts: 1

Posted: Dec 12, 2004 04:04 Title: for the lazy among us! ;-)

For everyone who doesn't feel like thinking and only needs the sum formula ... grin

heptane

2-methylhexane
3-methylhexane

2,3-dimethylpentane
3,3-dimethylpentane
2,4-dimethylpentane
2,2-dimethylpentane
3-ethylpentane

2,2,3-trimethylbutane

greeting
guest






guest






Posted: Apr 09, 2005 7:41 PM Subject:

daaaaaaaankke !!!!! 1
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lalamaus
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Posted: Aug 15, 2005 6:16 PM Subject: HIIIIIIIIIIIIILFE !!!

would be nice if you could also name the isomers, I have to finish the mornings
sunny
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Registration date: 07/08/2004
Posts: 734
Place of residence: Hamburg
Posted: Aug 15, 2005 6:45 PM Subject:

I hope it's not too much work for you if you just read this thread through completely ......
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Posted: Sep 22, 2005 3:55 PM Subject:

Thanks to you too
it's me
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Posted: Oct 04, 2005 6:28 PM Subject:

Thank you from me too ... will need you tomorrow * g *
guest






Posted: Oct 18, 2005 11:47 PM Subject:

thx !!
Joana
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Loeli
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Posted: Nov 20, 2005 6:27 PM Subject:

Nice that there are still forums where you can write as a guest.

Thanks for the solutions! Internet can be so beautiful
chrisx



Registration date: 10/22/2007
Posts: 1

Michael from Nbg



Registration date: 08/12/2004
Posts: 1927
Place of residence: Nuremberg
Stromer



Registration date: 03/30/2008
Posts: 7

Posted: March 30, 2008 1:27 PM Subject:

Am I correct in assuming that 2,3-dimethylpentane is an enantiomer with a center of chirality in the form of the 3rd carbon atom?

thank you and lg
litterman



Registration date: 09/22/2004
Posts: 2607
Place of residence: Marburg
Posted: March 30, 2008 1:39 PM Subject:

should be like that, yes
Stromer



Registration date: 03/30/2008
Posts: 7

Posted: March 30, 2008 13:56 Title:

Thank you thank you
guest_2.0
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Posted: Apr 18, 2010 13:30 Title: Re: for the lazy among us! ;-)

Michael from Nbg wrote the following:

2-methylhexane
3-methylhexane

2,3-dimethylpentane
3,3-dimethylpentane
2,4-dimethylpentane
2,2-dimethylpentane
3-ethylpentane

2,2,3-trimethylbutane






okay, but one thing I don't understand: why, for example, is 1-propylbutane not an isomer? Or 2-ethylpentane? So, logically it should be some or am I totally stupid? or is it the case that in nature there are only these nine, and not all that would be theoretically possible?
magician4
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Registration date: 05.10.2009
Posts: 11677
Place of residence: Hamburg
Posted: Apr 18, 2010 2:28 PM Subject:

Quote:
okay, but one thing I don't understand: why, for example, is 1-propylbutane not an isomer? Or 2-ethylpentane? So, logically it should be some or am I totally stupid? or is it the case that in nature there are only these nine, and not all that would be theoretically possible?


1-propylbutane:
because you don't have a C-chain branch
the C-chain continues unbranched (in contrast to the other isomers, because it splits into e.g. 2 C-chains)

and so the rule is that in such a case you just keep counting straight ahead
"1-propylbutane" is therefore the wrong name for the compound, which is actually called n-heptane

2-ethylpentane:
rule: try to form as long a C-chain as possible. then the rest of it
If you follow this rule, 2-ethylpentane is a wrong name, then the correct name is 2-methylhexane.
and that is then in the list, which is otherwise complete, and yes: there are all of them in nature

greeting

ingo
_________________
a month in the laboratory saves you a quarter of an hour in the library!
Warlord
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Posted: Oct 17, 2010 3:41 PM Title: thank you

really well done, big praise
nice