Chemcraft

For working with other formats of calculations, the possibility to import/export coordinates of atoms in text format can be easily used. Chemcraft does not perform its own calculations, but can significantly facilitate the use of widespread quantum chemistry packages. Chemcraft works under Windows and Linux (but the Linux version has some disadvantages).

The main capabilities of the program include:

• Rendering 3-dimensional pictures of molecules by atomic coordinates with the possibility to examine or modify any geometrical parameter in the molecule (distance, angle);
• Visualization of Gamess, Gaussian, NWChem, ADF, Molpro, Dalton, Jaguar, Orca output files: representation of individual geometries from the file (optimized structure, geometry at each optimization step, etc), animation of vibrational modes, graphical representation of gradient (forces on nucleus), visualization of molecular orbitals in the form of isosurfaces or colored planes, visualization of vibrational or electronic (e.g. TDDFT) spectra, possibility to show SCF convergence graph, and some other features;
• Different tools for constructing molecules and modifying molecular geometry: using standard molecular fragments, “dragging” atoms or fragments on the molecule’s image, utility for setting a point group, and other possibilities;
• Producing publication-ready images of molecules in customizable display modes, containing required designations (labels, lines, etc);
• Some additional utilities for preparing input files: visual construction of Z-matrixes, automatic generation of input files with non-standard basis sets, converting MOs read from an output file into the format of input file.

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