The electron densities, molecular orbitals, and potentials are output to files in the Gaussian cube format. Figure 13 shows examples of isosurface maps visualized by XCrySDen [105]. These data are output in the Gaussian cube format. So, many software, such as VESTA [103], Molekel [104], and XCrySDen [105], can be used for the visualization. One can find the details of output files in the cube format in the Section 'Output files'.
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