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Q-Chem 4: The Frontier of Quantum Modeling

Q-Chem is a comprehensive ab initio quantum chemistry package for accurate predictions of molecular structures, reactivities, and vibrational, electronic and NMR spectra. The new release of Q-Chem 4 represents the state-of-the-art of methodology from the highest performance DFT/HF calculations to high level post-HF correlation methods:

  • Fully integrated graphic interface including molecular builder, input
    generator, contextual help and visualization toolkit (multiple copies available free of charge);
  • Dispersion-corrected and double hybrid DFT functionals;
  • Faster algorithms for DFT, HF, and coupled-cluster calculations;
  • Structures and vibrations of excited states with TD-DFT;
  • Methods for mapping complicated potential energy surfaces;
  • Efficient valence space models for strong correlation;
  • More choices for excited states, solvation, and charge-transfer;
  • Effective Fragment Potential and QM/MM for large systems;
  • For a more in-depth information on key new features, click here