![]() In terms of molecular structure this means the state where the atoms are arranged such that the total (i.e., nuclear + electronic) energy is lowest. Basic optimization calculation protocolĪt room temperature, most molecules will be in their ground state (i.e., minimum energy state). More instructions on using Avogadro with pictures can be found here. Click and drag to add a new atom bonded to an existing atom. Click to add carbon and right click to delete an atom. To create an initial representation of the benzene and nitrobenzene molecules, we will use the software Avogadro, which is free to download. In this exercise we use PsiAPI, an implementation of Psi4 within Python, to perform geometry optimization and plot the bond distances and energies for two simple molecules: benzene and nitrobenzene. Plot how the energy of the molecule changes during the optimization. Plot how a bond length changes during the optimization. Optimize the geometry of a molecule using the PsiAPI within the jupyter notebook workflow. ![]()
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