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Vibrational and Electronic Energy Level of Polyatomic Transient Molecules. Supplement 1.



Marilyn E. Jacox


The database concerned with the vibrational and electronic energy of polyatomic transient molecules with from 3 to 16 atoms now contains the experimentallydetermined vibrational fundamentals and electronic band origins of approximately 2140 neutral and ionic transient molecules. This database is distributed in both published and computer-searchable forms. Emphasis is placed on species with lifetimes too short for study using conventional sampling techniques. The compilation also includes many high temperature molecules and several less reactive species which have presented spectral evaluation problems and which are important in a wide variety of environmental and industrial chemical systems. Radiative lifetimes and the principal rotational constants are given. Observations in the gas phase, in molecular beams, and in rare-gas and diatomic molecule matrices are evaluated. The types of measurement surveyed include conventional and laser-based absorption and emission techniques, laser absorption with mass analysis, and photoelectron spectroscopy.
J. Phys. & Chem. Ref. Data (JPCRD) -


database, electronic energy levels, free radicals, gas phase, matrix isolation, radiative lifetimes, rotational constants, vibrational energy levels


Jacox, M. (1990), Vibrational and Electronic Energy Level of Polyatomic Transient Molecules. Supplement 1., J. Phys. & Chem. Ref. Data (JPCRD), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 18, 2024)
Created December 3, 1990, Updated February 17, 2017