WebMO Basic Features

The built-in 3-D editor allows users to draw arbitrary molecules from an intuitive click-and-drag interface with support for rotation, translation, and zooming.

Clean-up automatically adds hydrogens and idealizes bond lengths and angles. Bond lengths, angles, and dihedrals may be displayed and adjusted. Fragments can be inserted, translated, and rotated.

Existing structures in XYZ, mol, or PDB format can be imported. The editor also allows for chemical information lookup, Huckel orbital calculations, and display of symmetry elements on structures.

Alternatively, sketch molecules using the 2-D line structure editor, just as in organic chemistry.

2-D line structures are automatically converted into a 3-D when saved into WebMO. Stereochemistry is preserved during this process.

WebMO Basic supports most popular computational chemistry engines including: Gamess, Gaussian, MolPro, Mopac, NWChem, Orca, PQS, PSI, Q-Chem, TeraChem, Tinker, Quantum Expresso, VASP, and xTB

Supported calculation types include: molecular energy, geometry optimization, partial charges, bond orders, vibrational frequencies and spectra, thermochemistry, interaction energy, transition states, excited states, UV-Vis spectra, and NMR spectra

Submitted jobs are added to a built-in First In First Out (FIFO) queue.

The Job Manager displays all your computational chemistry jobs.

Completed, running, and queued jobs are listed. Completed jobs may be downloaded. Existing jobs from other sources may be imported.

WebMO Basic includes built-in support for molecular mechanics calculations, symmetry analysis, and Huckel molecular orbital calculations.

These basic calculations are available without using a separate computational chemistry program.

The 3-D viewer allows one to rotate, translate, and zoom the molecule, as well as display bond lengths, angles, and dihedrals. Partial charges and the dipole moment are visualized on the structure.

Tables of energies, thermochemistry results, rotational constants, vibrational frequencies, etc. are presented. The program raw output is also available.

WebMO Basic run jobs to calculate infrared, Raman, VCD, UV-Vis, and NMR spectra of molecules. the results are parsed and displayed both as energy level tables and as spectra. Vibrational normal modes are display either with arrows to indicate atom motions or as animations.

The displayed spectra are linked to the molecular image. Clicking on an infrared peak will display its associated normal mode. Clicking on an NMR peak will highlight the associated atoms.

Realistic NMR spectra can be displayed using estimated or calculated proton splittings.

WebMO Basic can determine the point group of any molecule and display its symmetry elements, or any subset of symmetry elements.

A nearly symmetric molecule can also be symmetrized, which is useful prior to a calculation in order for the program to take advantage of the molecular symmetry.

WebMO Basic can access and display results from a variety of external databases including PubChem, ChemSpider, NIST WebBook, Sigma-Aldrich, NMRShiftDB, and SDBS Spectral Database.

Once a molecule is imported or drawn, WebMO is a portal for displaying research, thermodynamic, safety, pricing, and spectral information available in these free databases.

All WebMO administration is performed via a menu-based web interface.

Add, edit, disable, or delete WebMO users. View, download, or delete jobs from WebMO users. Limit CPU time on a per job or cumulative basis. Configure computational chemistry program settings. Configure system and WebMO settings.