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    #1 Re: Quantum Chemistry **** Warning!!: The largest alpha MO coefficient is 0.10035696D+02 2025-05-19 18:31:01

    Dear Tian,

    But I need the frequency values and the thermodynamic quantities G and H, although they are not displayed in the output.

    #2 Quantum Chemistry **** Warning!!: The largest alpha MO coefficient is 0.10035696D+02 2025-05-19 08:37:24

    Driss
    Replies: 3

    Dear Tian,

    I would like to perform a frequency calculation for a molecule that has already been optimized, using Gaussian.
    The keywords I used are:
    #p freq mpw1pw91/6-31g(d) scrf=(iefpcm, solvent=dichloromethane)

    However, the calculation gives me this error.
    What should I do?

    Thank you in advance

    error.png

    #3 Quantum Chemistry Theoretical calculation at high pressures with xp-pcm model 2024-08-30 18:04:50

    Driss
    Replies: 1

    Dear Dr. Tian,

    Is there a simple program or script to perform theoretical calculations at high pressures using the XP-PCM model?


    Thank you.

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