NORMAL-PHASE AND REVERSED-PHASE HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC BEHAVIOR AND PARTICLE-BEAM MASS-SPECTROMETRIC CHARACTERIZATION OF ALKYNE-SUBSTITUTED IRON-CARBONYL CLUSTERS

The chromatographic behaviour of seven iron-carbonyl compounds substit uted with alkynes R2C2 was studied both in normal-phase and reversed p hase chromatography. Several kinds of stationary phases were considere d, including silica, CN, C-18 and phenyl columns. Positive-ion and neg ative-ion chemical ionization mass spectra of the compounds obtained w ith a particle beam MS system in flow injection analysis are reported. LC-MS experiments were performed for confirmation purposes and in ord er to check the integrity of the analytes after the LC separation. (C) 1997 Elsevier Science B.V.