David R. Lide
These six tables list the fundamental vibrational frequencies of selected three-, four-, and five-atom molecules. Both stable molecules and transient free radicals are included. The data have been taken from evaluated sources. In general, the selected values are based on gas-phase infrared, Raman, or ultraviolet spectra; when these were not available, liquid-phase or matrix-isolation spectra were used.
Molecules are grouped by structural type. Within each group, related molecules appear together for convenient comparison.
The vibrational modes are described by their approximate character in terms of stretching, bending, deformation, etc. It should be emphasized, however, that most such descriptions are only approximate, and that the true normal mode usually involves a mixture of motions. Abbreviations for vibration types are as follows.
In the case of free radicals, strong interactions may exist between the electronic and bending vibrational motions. Details can be found in Refs. 3 and 4. The references should be consulted for information on the accuracy of the data and for data on other molecules not listed here.
Column definitions for Tables 1-6 are as follows.
The CRC Handbook of Chemistry and Physics (HBCP) contains over 700 tables in over 450 documents which may be divided into several pages, all categorised into 17 major subject areas. The search on this page works by searching the content of each page individually, much like any web search. This provides a challenge if you want to search for multiple terms and those terms exist on different pages, or if you use a synonym/abbreviation that does not exist in the document.
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