NIST Chemistry WebBookThis resource contains Thermochemical data for over 7000 organic and small inorganic compounds, Reaction thermochemistry data for over 8000 reactions, computed 3-D structures, evaluated IR spectra, ion energetics data, and many other types of data. It can also be searched by Formula, Name, IUPAC identifier, CAS registry number, Reaction, Author, Structure, Ion energetics properties, Vibrational and electronic energies, and Molecular weight.