Analysis of ruthenium carbonyl–porphyrin complexes: a comparison of matrix-assisted laser desorption/ionisation time-of-flight, fast-atom bombardment and field desorption mass spectrometry

Comparison of the sensitivity of mass spectrometry atmospheric pressure ionization techniques in the analysis of porphyrinoids

“…Porphyrinoids are characterized by a great variety of structure types; hence, it is not possible to analyze them by using only one ionization method. There are many examples in the literature regarding the application of various MS ionization techniques [EI, [2,3] chemical ionization (CI), [4,5] electrospray ionization (ESI), [6][7][8][9][10][11] atmospheric pressure CI (APCI), [12][13][14] atmospheric pressure photoionization (APPI), [15][16][17][18] fast atom bombardment (FAB), [19][20][21] liquid secondary ion MS, [22,23] field desorption, [24][25][26] matrix-assisted laser desorption/ionization (MALDI) [19,27,28] ] with reference to this class of compounds. It is also possible to find examples of comparison of ionization methods in qualitative terms, but the number of such publications is very limited.…”

“…[20] Frauenkron et al compared MALDI, FAB and field desorption in the analysis of ruthenium carbonyl-porphyrin complexes. [24] Forest et al illustrated differences between EI, FAB and CI for dihalogenotitanium porphyrins. [29] However, there is lack of examples of study concerning the comparison of ionization methods in terms of their sensitivity towards different classes of porphyrinoids, both as free bases and as their complexes with metal cations.…”

Liquid Injection Field Desorption Ionization Mass Spectrometry of Cyclic Metal Carbonyl Complexes with Tetra-Antimony Ligands

“…In contrast to the EI spectra of 1 and 2, the LIFDI spectra do not exhibit loss of CO molecules or alkyl groups, the base peaks of which would appear at m/z 870 (loss of CO), 869 (loss of Et), or 855 (loss of Pr), respectively, from the main component of 3. The absence of CO loss convincingly proves the unprecedented softness of the LIFDI technology compared with other ionization methods including electrospray ionization (ESI) [13], matrix assisted laser desorption ionization (MALDI), and fast atom bombardment (FAB) [14].…”

Exploring the Optimal Synthetic Pathways towards µ‐Carbido Diruthenium(IV) Bisphthalocyaninates

“…However, in the case of MALDI-TOF mass-spectral studies these complexes underwent decarbonylation upon laser desorption/ionization [47,48] with the formation of [Pc*Ru] 2 + molecular ions ap-pearing as dominant signals in mass-spectra of tert-butyl and crown-substituted complexes. Their HR-ESI massspectra showed non-fragmented molecular ions.…”