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Overlap integrals: What are they and how do we arrive at the formula?

  1. Nov 30, 2009 #1
    Hey I've been looking all over the web and I can't find any comprehensible information on overlap integrals. What does the overlap integral of two functions give us? And why?

    Thanks in advance!
  2. jcsd
  3. Nov 30, 2009 #2
    hint: change of basis
  4. Nov 30, 2009 #3
    lol sorry - I don't have a clue what the basis even refers to...
  5. Dec 1, 2009 #4
    Basis(basis set) = atomic orbitals from which the MO is built.
    So overlap integrals is a measure of the interracton between a nucleus and electron density centred on the other nucleus . Note that this is just partial example of what overlap integral is.
    I guess we arrive at the formula by considering the fact that atomic orbitals can be combined linearly.
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