Surface tension values of some common test liquids for surface energy analysis.

Database which has an extensive library including programs for fitting spectra and spectral line files for a large number of molecules. Use requires knowledge of spectroscopy and quantum mechanics.

The values of the fundamental physical constants provided at this site are recommended for international use by CODATA and are the latest available.

Thermochemical data for over 6000 organic and small inorganic compounds. Reaction thermochemistry data for over 9000 reactions. IR spectra for over 8700 compounds. Mass spectra for over 12,000 compounds. UV/Vis spectra for over 400 compounds. Electronic and vibrational spectra for over 4000 compounds. Constants of diatomic molecules (spectroscopic data) for over 600 compounds. Ion energetics data for over 16,000 compounds. Thermophysical property data for 33 fluids.

site at Berkeley also has selected kinetic rate constants and parameters for reactions involving the species included in their database.

Band structure, total energy, density of states, and derived quantities for most Periodic elements, hydrides, carbides, nitrides, and oxides.

Chemical property data (such as reaction rate constants, and redox potentials,) historic bibliographic information from the RCDC bibliographic database, and recent papers in radiation chemistry and photochemistry. Also includes an on-line continuation of the Biweekly List of Papers in Radiation Chemistry and Photochemistry.

Database holding information on fundamental physical constants, atomic spectra, molecular spectroscopic data, ionization data, X-Ray and Gamma-Ray data, radiation dosimetry data, nuclear physics data, and condensed matter physics data.

Energy-consistent pseudopotentials of the Stuttgart/Bonn group (semi-local pseudopotentials adjusted to reproduce atomic valence-energy spectra) for every element in the periodical table. Provided by the University of Stuffgart.