CHARACTERIZATION OF CHROMIUM-CARBENE COMPLEXES BY HIGHPERFORMANCE LIQUID-CHROMATOGRAPHY MASS-SPECTROMETRY WITH PARTICLE-BEAM INTERFACE

High-performance liquid chromatography (HPLC) coupled with mass spectr ometric (MS) detection was used to separate and characterize a series of chromium-aminocarbene and alkoxycarbene complexes of the Fischer ty pe, some of which were synthesized as new compounds. Chromium-carbene complexes ale known to have interesting photochemical properties. The separation of all the compounds examined was performed under normal-ph ase conditions and a particle beam LC-MS interface was used. The acqui sition of positive-ion and negative-ion chemical ionization mass spect ra of the eluates was performed. The use of the LC-PB-MS system demons trated the potential role of this technique in the elucidation of the structure of polar organometallic compounds, such as the carbene compl exes of chromium examined.