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    Hi,got stuck on something that seem simple here.

    1) How can I get an exact eigenstate and eigenvalue of hamiltonian just by completing the square of the hamiltonian where,
    H = Ho + V

    Ho comprises of KE and PE, and V = constant x operator x

    I can complete the square between the terms with x, but am not sure how to utilise it further.

    2) So, given 5 molecular orbitals for a cyclic homonuclear molecule with 5 sites, compute to first order in perturbation theory, the corrected eigenvalues when one atom is replaced by a heteroatom such that the coulomb integral for this atom changes from alpha to gamma. there is no change in betas.

    - I have not much idea how to approach this, if someone could just give me a few hints.

    Thanks.
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    Not a clue, I'm afraid... despite having been taught for three years by the person who is presumably lecturing on this. All I can say is that it serves you right for picking quantum supplementary
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    (Original post by cpchem)
    Not a clue, I'm afraid... despite having been taught for three years by the person who is presumably lecturing on this. All I can say is that it serves you right for picking quantum supplementary
    Haha, i know, but despite trying so hard on organic(mainstream and supplementary), I always tend to not know what to do when I am under time constraint(exam style).

    Quantum is probably the best option for me; hope to at least scrap a pass so I can skip the labs!

    And yeah, I think Barford is a balliol tutor.
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    (Original post by shengoc)
    Haha, i know, but despite trying so hard on organic(mainstream and supplementary), I always tend to not know what to do when I am under time constraint(exam style).

    Quantum is probably the best option for me; hope to at least scrap a pass so I can skip the labs!

    And yeah, I think Barford is a balliol tutor.
    :yep: - that's who I was thinking of.
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    (Original post by shengoc)
    Hi,got stuck on something that seem simple here.

    1) How can I get an exact eigenstate and eigenvalue of hamiltonian just by completing the square of the hamiltonian where,
    H = Ho + V

    Ho comprises of KE and PE, and V = constant x operator x

    I can complete the square between the terms with x, but am not sure how to utilise it further.

    2) So, given 5 molecular orbitals for a cyclic homonuclear molecule with 5 sites, compute to first order in perturbation theory, the corrected eigenvalues when one atom is replaced by a heteroatom such that the coulomb integral for this atom changes from alpha to gamma. there is no change in betas.

    - I have not much idea how to approach this, if someone could just give me a few hints.

    Thanks.
    Not sure what the first question really means, but I can probably help with the second question. Remind me tomorrow, when I'm awake... :p:
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    (Original post by Kyle_S-C)
    Not sure what the first question really means, but I can probably help with the second question. Remind me tomorrow, when I'm awake... :p:
    Hey need reminding about this question? I got a few hints from my tutor, so hopefully I should be able to solve it soon, but I don't mind a few extra hints.
 
 
 
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