Orgo question

[Dental2000]

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Whats the bond angle of H-C-H in CH4?
I think its 109.5 but not sure

Also what classifys as a Quaternary ammonium salt ?


Suppose we have 2 Cyclohexane rings
On Ring 1, there is a CH3 at the O and M postions with the O coming out of the plane and M going into the plane

On Ring 2, the CH3 are on the same position only this time the O position is going into the plane and M is coming out

What time of isomers are the 2 molecules? They should be Meso rite?

Any help will be appreciated

 

[needzmoar]

Whats the bond angle of H-C-H in CH4?
I think its 109.5 but not sure

Also what classifys as a Quaternary ammonium salt ?


Suppose we have 2 Cyclohexane rings
On Ring 1, there is a CH3 at the O and M postions with the O coming out of the plane and M going into the plane

On Ring 2, the CH3 are on the same position only this time the O position is going into the plane and M is coming out

What time of isomers are the 2 molecules? They should be Meso rite?

Any help will be appreciated

O and M positions? Ortho and Meta?

 

[LetsGo2DSchool]

The bond angle of each C-H in CH4 is 109.5 (tetrahedral molecular geometry).

The two cyclohexanes are not meso. They are enantiomers. Just imagine rotating one of them and trying to superimpose it on the other. It will be different.

 

[rockclock]

Whats the bond angle of H-C-H in CH4?
I think its 109.5 but not sure

Also what classifys as a Quaternary ammonium salt ?


Suppose we have 2 Cyclohexane rings
On Ring 1, there is a CH3 at the O and M postions with the O coming out of the plane and M going into the plane

On Ring 2, the CH3 are on the same position only this time the O position is going into the plane and M is coming out

What time of isomers are the 2 molecules? They should be Meso rite?

Any help will be appreciated

CH4 is tetrahedral so, yes, 109.5 degrees.

A quaternary ammonium salt has NR4+ as the cation (need four alkyl groups)...i.e. this will have a positive charge at any pH: http://forums.studentdoctor.net/showthread.php?t=83712

On the rings, there are methyl groups ortho and meta to what? ...each other or another group?

 

[mh0000]

I *think* what he's trying to say is a cis-1,3-dimethylcyclohexane and trans-1,3-dimethylcyclohexane???? If that is the case, then trans will have two enantiomers while the cis will not have an enantiomer as its meso.

 

[needzmoar]

I *think* what he's trying to say is a cis-1,3-dimethylcyclohexane and trans-1,3-dimethylcyclohexane???? If that is the case, then trans will have two enantiomers while the cis will not have an enantiomer as its meso.

Thank you. I was confused if whether or not OP meant 1,3 by using O and M. o/m/p is typically reserved for benzene nomenclature.

 

[mh0000]

Man, i've been misreading a lot of question today.... While what I said is true, what he is asking for is the relationship between the two (assuming they are the compounds I stated earlier). In that case they are diastereomers

 

[rockclock]

Thank you. I was confused if whether or not OP meant 1,3 by using O and M. o/m/p is typically reserved for benzene nomenclature.

haha very true, but that's the least of OP's problems here. OP, if you want good help at least have the decency to type up a clear question...using your (incorrect) shorthand is not doing anyone any good.

 

[Dental2000]

Yeah O means Ortho and M means Meta...I noe they are reserved for Benzene nomenclature, but im pretty sure u can fig out those positions that im talking about..

They arent O/P to anything... Just imagin a normal cyclohexane ring with a CH3 at the 2nd and 3rd postion

Ive attached a picture so u guys can see.....My drawing sucks balls btw

And please don try and be rude over here...Just because im asking you for help doesn't mean u can talk anywhich way you want cause ur giving help...

If u cant say anything good then don't post anythin...

 

[AlbinoPolarBear]

Yeah O means Ortho and M means Meta...I noe they are reserved for Benzene nomenclature, but im pretty sure u can fig out those positions that im talking about..

They arent O/P to anything... Just imagin a normal cyclohexane ring with a CH3 at the 2nd and 3rd postion

Ive attached a picture so u guys can see.....My drawing sucks balls btw

And please don try and be rude over here...Just because im asking you for help doesn't mean u can talk anywhich way you want cause ur giving help...

If u cant say anything good then don't post anythin...

From your drawings of the 2 molecules. They are the exact same compound.

One is just rotated 180 degrees along the y axis compared to the other.

 

[Dental2000]

But I have question that doesnt have Same compound as an answr

a) Structural isomers
b) meso compounds
c) diasteromers
d)enationmers
e)epimers


If this were on the real DAT i would have been debating between meso and enatiomers...

 

[dentalfanatic]

I would go with diastereomers... cis and trans conformations are diastereomers to each other.

 

[mh0000]

Yeah O means Ortho and M means Meta...I noe they are reserved for Benzene nomenclature, but im pretty sure u can fig out those positions that im talking about..

They arent O/P to anything... Just imagin a normal cyclohexane ring with a CH3 at the 2nd and 3rd postion

Ive attached a picture so u guys can see.....My drawing sucks balls btw

And please don try and be rude over here...Just because im asking you for help doesn't mean u can talk anywhich way you want cause ur giving help...

If u cant say anything good then don't post anythin...

No offense, but if you read the above replies, we couldn't figure out what structure you were talking about. Nomenclature has practical utility for a good reason 🙂 Based on what you drew, then I agree with Albino: They are the same molecule

 

[needzmoar]

But I have question that doesnt have Same compound as an answr

a) Structural isomers
b) meso compounds
c) diasteromers
d)enationmers
e)epimers


If this were on the real DAT i would have been debating between meso and enatiomers...

definitely not a meso. where is the plane of symm?

gonna have to go with identical.