Spartan includes access to a number of highly useful molecular databases, including: The Spartan Molecular Database, Spartan Reaction Database, Cambridge Structural Database* and Protein Data Bank**.

*CSD must be licensed separately. **PDB access requires internet connectivity.

  Databases:  
     
  SMD Access and retrieve/replace constructed or imported structures from a library of 140,000* molecules, pre-calculated at up to 5 quantum theory levels: HF/3-21G, HF/6-31G*, EDF1/6-31G*, B3LYP/6-31G*, and MP2/6-31G* models. Retrieved data includes: the name, equilibrium geometry, gas-phase energy, estimated (aqueous) solvation energy, HOMO and LUMO energies, dipole moments, electrostatic-fit atomic charges, surface area, polar surface area, volume, weight, symmetry, and spectra data.

* Current release contains over 140,000 molecules (~400,000 structures) -- this number is expected to grow by ~ 25% per year (future releases will include transition states and organometallics). Annual updates available for customers with maintenance.
     
  SRD Access to exact and substructure searching of the Spartan Reaction Database of more than 1500 reaction types for providing initial structure guesses for transition state geometry calculations.
     
  CSD Accesses the Cambridge Structural Database (CSD)* of over 300,000 experimental X-ray crystal structures for organic and organometallic molecules, together with their literature references. Spartan optionally adds hydrogens and refines hydrogen positions.

*CSD may be licensed from the Cambridge Crystallographic Data Centre or one of its distributors..
     
  PDB Spartan can retrieve (based on PDB ID) entries from RCSB PDB (provided your computer has current internet connectivity). The Protein Data Bank includes more than 30,000 x-ray crystal and NMR structures of proteins and nucleic acids.