|The Nicolet Vapor-Phase
Library consists of 8,654 FT-IR spectra of compounds measured in the gas phase. Most
(6,543) of the spectra were acquired by Aldrich Chemical Company using samples of their
products. The remaining spectra in the library are from the following sources: 1,345
spectra from the EPA gas phase IR collection, 622 spectra from the Bayerische Julious
Maximilian Universitat Wurzburg, 65 spectra from the Universitat Hannover, 79 spectra from
All of the Aldrich spectra and most
of the Thermo Scientific spectra are available in printed form in the "The Aldrich
Library of FT-IR Spectra," Edition 1, Volume 3 (Sigma-Aldrich Co., 1997).
The Aldrich, EPA, and Wurzburg spectra were measured in a
heated cell or light-pipe connected to the outlet of a gas chromatograph. The Thermo
Scientific and Hannover spectra were measured in gas cells at room temperature. For the
Thermo Scientific spectra, the gases were diluted to near atmospheric pressure with
nonabsorbing gases, while the Hannover spectra were run on neat gases at reduced pressure.
Special thanks are extended to Dr. Charles Pouchert of
Aldrich Chemical Company, Professor Dr. Schreier of the Institute of Food Chemistry at the
Bayerische Julious Maximilian Universitat Wurzburg, and Professor Dr. H. Willner of the
Institute of Inorganic Chemistry at the Universitat Hannover, for their cooperation in
preparing this library.
The spectra were originally acquired at 0.5 2 cm-1
spectral resolution. The spectra were mathematically deresolved during conversion to
Thermo Scientific Omnic library format.
For the Aldrich spectra and the Thermo
Scientific spectra of
Aldrich chemicals, the Aldrich catalog number of the compound and the location of the
printed spectrum in volume 3 of the "Aldrich FT-IR Collection, Edition I" are
also included. The latter is in the form: <page number> <spectrum letter>; for
example, 234B refers to the second (B) spectrum on page 234.