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Hydrocarbon Structural Diagrams

  1. Feb 12, 2004 #1

    JDK

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    Hello,

    I was quite curious about this one here...

    If I were asked to draw a structural diagram, for example, of trimethylbutane, where would I put the three branches of methyl. When they don't specify the location of the branches what does one do? I'd normally be expecting something like 2,3,3-trimethylbutane, etc. The reason I'm asking is because there are many combinations one could produce to put out something in this format x,x,x-trimethylbutane. Therefore I became unsure if the question was correct or if I was mistaken... or overly paranoid...

    Thanks!
     
  2. jcsd
  3. Feb 13, 2004 #2
    2,2,3 (or 2,3,3)-trimethyl butane seems to be the only option, because if either was at the first or last position, it would not be a butane; therefore, regardless of which end you start at, you will end up with 2,2,3- trimethyl butane.

    Hope that helps.
     
  4. Feb 13, 2004 #3

    JDK

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    Yes that does. Thank-you. I didn't know it was significant if the branches were on the first/last carbon atoms. That clears up my confusion. :smile:
     
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