1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Optimum orientation of molecule

  1. Dec 9, 2005 #1
    what exactly is that?
     
  2. jcsd
  3. Dec 9, 2005 #2

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    what exactly are you referring to? Within the medium, the surface area?
     
  4. Dec 9, 2005 #3
    i mean like the bonding of the carbon to the hydrogen etc...

    like angle between
     
  5. Dec 9, 2005 #4

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    well this relates a lot to quantum models, but you can get an idea (albeit a very simplistic perspective) of the overall geometry simply based on a charge-charge attractions and repulsions. A simple explanation should be in your text.
     
  6. Dec 10, 2005 #5
    oh i must be asking the question wrong
    like the chain of carbon would be like zig zag

    so what would the optimum orientation
    not the placement of the electrons with the quantum numbers/ model
     
  7. Dec 10, 2005 #6

    movies

    User Avatar
    Science Advisor

    depends on the substituents on the atoms and the stereochemistry. In general you try to minimize gauche interactions of adjacent carbons first, then it gets more complicated if things start wrapping back onto themselves. These interactions can be on the smallish side where energy is concerned, so it's not hard to occupy the non-ground state conformations.
     
  8. Dec 10, 2005 #7

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    well any configuration ultimately has to do with quantum models, if you're referring to "stable" isomers and relative free energies (or enthalpies), there are chemical methods to distinguish the most stable configuration; thermodynamic considerations such as enthalpy of combustion, experiments associated with equilibrium concentrations, rate constants and more.
     
  9. Dec 10, 2005 #8
    k, but just for example how you figure out angle between CO2
    like the bonds 120 degree? or how to get it
     
  10. Dec 10, 2005 #9

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    I see what you're getting at, is this a homework question? Ever heard of VSEPR? Lewis structures?
     
  11. Dec 10, 2005 #10
    yea, oh i think i got it
    so like a trigonal planar would have angles 120 degree between them?
     
  12. Dec 10, 2005 #11
    thanks for all your hlep GCT
     
  13. Dec 10, 2005 #12

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    Sure thing, next time you might want to post such questions as homework....in the homework forum, that way people will know what you're referring to.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Optimum orientation of molecule
  1. Name the molecule (Replies: 3)

  2. Molecule name (Replies: 6)

Loading...