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Related Experiment Videos

Contracted basis sets for density functional calculations: segmented versus general contraction.

Frank Jensen1

  • 1Department of Chemistry, University of Southern Denmark, DK-5230 Odense M., Denmark.

The Journal of Chemical Physics
|March 4, 2005
PubMed
Summary
This summary is machine-generated.

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Segmented and general contracted basis sets were analyzed for accuracy. Segmented basis sets require more primitive functions, but core-pruned sets offer comparable accuracy for molecular properties.

Area of Science:

  • Computational Chemistry
  • Quantum Chemistry

Background:

  • Basis sets are crucial for accurate quantum chemical calculations.
  • Segmented and general contractions offer different approaches to basis set construction.

Purpose of the Study:

  • To analyze differences between segmented and general contracted basis sets.
  • To evaluate basis set performance for molecular properties of first and second row elements.

Main Methods:

  • Comparative analysis of basis set contractions.
  • Assessment of exponent space coverage.
  • Evaluation of molecular property prediction accuracy.

Main Results:

  • Segmented contractions require more primitive functions than general contractions.

Related Experiment Videos

  • Core-pruned basis sets maintain accuracy for valence-dependent properties.
  • Popular basis sets often utilize core-pruned approaches.

    • Conclusions:

    • Basis set choice impacts computational cost and accuracy.
    • Core-pruning is a viable strategy for efficient basis sets.
    • Understanding basis set construction is key for reliable computational chemistry.