MALDI-TOF Mass Spectrometry of Rhenium Organometallics
John R. Nash*, Martha M. Vestling, and Charles P. Casey
Department of Chemistry, University of Wisconsin - Madison, Madison, WI 53706
To date, matrix-assisted laser desorption/ionization time-of-flight
(MALDI-TOF) has been mainly applied to biomolecules and polymers. We have
successfully determined the masses of a series of organometallic rhenium
cations and neutrals using delayed extraction in the reflectron mode. The
rhenium-containing ions were easily identified by their characteristic
isotope patterns, and the cationic complexes gave the most easily interpreted
spectra. Spectra were obtained both with and without matrix. Mass spectra will
be presented for a range of compounds including those whose structures are
shown below.
