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Introduction to OCC

Welcome to the tutorial for OCC (Open Computational Chemistry) - a powerful quantum chemistry toolkit for molecular and crystal structure calculations.

OCC provides:

  • Self Consistent Field (SCF) calculations with Hartree-Fock (HF) various Density Functional Theory (DFT) approximations (B3LYP, PBE, etc.)
  • Wavefunction analysis and visualization tools, like calculating electron density grids, electrostatic potential etc.
  • Crystal structure analysis including convergence of lattice/binding energies for molecular crystals and isosurfaceevaluation and properties
  • Multi-platform support native binaries on mac, linux, windows, python bindings, web version powered by wasm

What You Can Do with OCC

Use it as a command line executable (try it out)!

Use it as a python package!

Use it in the web browser!

Getting Started

This tutorial series will guide you through:

  1. Basic SCF Calculations - Some quick quantum chemistry calculation with water
  2. Wavefunction Analysis - Visualizing electronic structure, MOs and more
  3. Estimate Binding energies of molecular crystals - Understanding molecular crystals
  4. Crystal Growth & Morphology - Predicting crystal shapes
  5. Advanced Features - Web integration and interactive visualization