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adamconner

  • one year ago

What do you notice about the frequency of the C-H stretch as you go from hexane to 1-hexene to 1-hexyne? What factors do you think can contribute to this difference in C-H stretching frequency?

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  1. aaronq
    • one year ago
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    we can model bonds as springs, how does the frequency of oscillation of a spring change with increasing "stiffness"?

  2. nincompoop
    • one year ago
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    maybe the word stretch is not appropriate but the relative bond length do changes from singe to double and triple bonds

  3. aaronq
    • one year ago
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    the word stretch is used in IR spectroscopy - which is what this is about.

  4. Photon336
    • one year ago
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    Yeah @aaronq I think they do talk about bond stretching in IR a lot.. as you go from single to double to triple the number of bonds increases and bond length goes down. But i'm not sure though I mean I guess that if bond length goes down that would affect the frequency of oscillations, maybe fewer. perhaps since double and triple bonds have fewer degrees of freedom.

  5. aaronq
    • one year ago
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    bond length shortening increases the frequency of oscillations

  6. abb0t
    • one year ago
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    Yes, stretching is an appropriate word.

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