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Thread: Chemistry

  1. #1 Chemistry 
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    Is thr an easy method to find all the isomers of an organic compound?


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  3. #2  
    Moderator Moderator AlexP's Avatar
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    I don't believe so, other than just working them out.


    "There is a kind of lazy pleasure in useless and out-of-the-way erudition." -Jorge Luis Borges
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  4. #3  
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    First of all you would need to separate the mixture using a chiral stationary phase then further testing could be done. Then you could run the separated isomers using an NMR. This can then tell for example if the side chain on benzene ring is located in the para, meta or ortho position.

    Another approach is that could identify an isomer if you synthesis or get standards of the isomers of a particular compound and then run a raman spectrum or Infra red Sprectrum of all the isomer and save it to the database. Then in future if you come across an unknown you can compare spectras. IR and Raman are useful in distinguishing the arrangements of atoms in space. This way would take along time and has a good bit of work attached to it.
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    Moderator Moderator AlexP's Avatar
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    forensic, I'm pretty sure the OP was asking more from the perspective of a student taking intro chem and that that answer would be way over their head... Also, kindly don't resurrect threads that have been dead for several months. Especially since the OP hasn't made a single post since October 28th.
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  6. #5  
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    Well if you believe you answered the persons query then you made a sorry attempt at it. "Pamoda" posted a question and is entitled to an answer regardless of how old the thread may have been inactive. That is not for you to decide. I apologize if i wounded your narcissism in the process
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  7. #6  
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    Quote Originally Posted by AlexP
    forensic, I'm pretty sure the OP was asking more from the perspective of a student taking intro chem and that that answer would be way over their head... Also, kindly don't resurrect threads that have been dead for several months. Especially since the OP hasn't made a single post since October 28th.
    This thread is certainly way over my head but I have another problem in understanding what I take to be Forum policy.
    Why is it wrong to "resurrect threads that have been dead" for some time?
    Surely what matters is whether the post, that resurrects the thread, makes sense and is relevant.
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  8. #7  
    Moderator Moderator AlexP's Avatar
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    Pamoda clearly has not been an active in the forum since October 28, 2010 and is unlikely to receive or need any replies to his/her thread now. I was simply stating that it is general forum policy that old threads not be resurrected like that, and I feel quite confident that any other moderator or administrator will stand by me on that. It was unfortunate that neither I nor anyone else who viewed the post had a better response, but that is truly irrelevant now.
    "There is a kind of lazy pleasure in useless and out-of-the-way erudition." -Jorge Luis Borges
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  9. #8  
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    Quote Originally Posted by AlexP
    Pamoda clearly has not been an active in the forum since October 28, 2010 and is unlikely to receive or need any replies to his/her thread now. I was simply stating that it is general forum policy that old threads not be resurrected like that, and I feel quite confident that any other moderator or administrator will stand by me on that. It was unfortunate that neither I nor anyone else who viewed the post had a better response, but that is truly irrelevant now.
    I can understand your position and I don't want to start a pointless argument.
    However I still believe it is the thread itself which is important and not whether the OP needs a reply or is active or not.
    If a MOD thinks a thread is silly/not relevant etc. then presumably it can be locked if someone resurrects it.
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  10. #9  
    Forum Professor jrmonroe's Avatar
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    Try ChemSpider, MolPort etc.
    Grief is the price we pay for love. (CM Parkes) Our postillion has been struck by lightning. (Unknown) War is always the choice of the chosen who will not have to fight. (Bono) The years tell much what the days never knew. (RW Emerson) Reality is not always probable, or likely. (JL Borges)
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