Observation of doubly charged ions in fast atom bombardment mass spectrometry: ruthenium(II) complexes in a nitrobenzyl alcohol matrix

Characterization of metal complexes of 1,10-phenanthroline, 2,2′-bipyridine, and their derivatives by fast atom bombardment mass spectrometry

“…However, trometer, retrofitted (20) with a Kratos FAB source in beam I and the newer ionization techniques such as field desorption (FD) interfaced to a Kratos DS 55 data system. Argon was used as the (3), fast atom bombardment (FAB) (4,16,17), secondary ion bombarding gas with atom gun (Ion Tech) energies of 6-8 kV and a gun mass spectrometry (SIMS) (5,18), and laser mass spectrometry current of 1 mA. The operating pressure of the ion source was typically (LMS) (6,19), have been used successfully for the characteriza--1~' Torr (1 Tom = 133.3 Pa), and the positive secondary ions tion of coordination compounds.…”

Gas phase ligand substitution reactions in fast atom bombardment mass spectrometry: effects of ligand base strength and choice of matrix liquid in substitution reactions of difluoroborn cations

“…Argon was used as the bombarding gas with atom gun (Ion Tech) energies of 8 kV and a gun current of approximately 1 m.4. Ions were accelerated to 4 kV, with a repeller potential on the FAB tip on the order of 20 V. The source pressure was typically lo-' Torr for normal FAB operation and the pressure rose to (1)(2)(3)(4)(5) x Torr when the volatile bases were introduced. (This measurement was made in the pumping line just outside the source housing, but unlike an EI source, the FAB source is 'TO whom correspondence should be addressed.…”

“…Fast atom bombardment mass spectrometry (FAB) has become an important technique for the characterization of cationic compounds (1)(2)(3)(4). However, recent work by several research groups has demonstrated that significant ion-molecule reactions can take place in the gas phase (5)(6)(7)(8).…”

The reduction and oxidation reactions of [Ru(CN)2(bpy)2] observed in liquid secondary ion mass spectra with a thioglycerol matrix

“…9 The formation process of a doubly-charged ion of [Ru(bpy) 3 ] 2+ observed in FAB mass spectra with 3-nitrobenzylalcohol, was related to an oxidative quenching of the excited state of the complex. 10 From the viewpoint of the correlation of LSIMS mass spectra with solution chemistry and photochemistry, we have examined how chemical species were formed during the ionization process by analyzing LSIMS mass spectra of [Ru(CN) 2 (bpy) 2 ] with 3-mercapto-1,2-propanediol (thioglycerol) containing a glycerol matrix, by the leastsquares method. Furthermore, to establish the usefulness of this method to determine the characteristics of the metal complex in solution, we have investigated whether the results obtained by the method correlated with the results obtained from solution chemistry.…”