Ideal for analytical chemists and other scientists using mass spectrometry, Assigning Structures to Ions in Mass Spectrometry presents the methods necessary for determining gas-phase ion structures. It is a comprehensive resource of background material that is essential for the interpretation and understanding of organic mass spectra. Following a historical introduction of chief discoveries, it surveys how and when to use current experimental methods, computational chemistry, and theoretical calculations. Selected case studies illustrate specific challenges associated with ion structure assignment and thermochemical problems. The last section of the book contains the data for describing or identifying ions.