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Complexation of diazaperylene and bisisoquinoline with transition metal ions in the gas phase studied by electrospray ionization mass spectrometry
Author(s) -
Starke Ines,
Kammer Stefan,
Grunwald Nicolas,
Schilde Uwe,
Holdt HansJürgen,
Kleinpeter Erich
Publication year - 2008
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.3412
Subject(s) - chemistry , electrospray ionization , dissociation (chemistry) , mass spectrometry , ligand (biochemistry) , transition metal , collision induced dissociation , metal , ion , ionization , metal ions in aqueous solution , analytical chemistry (journal) , inorganic chemistry , crystallography , medicinal chemistry , tandem mass spectrometry , chromatography , catalysis , organic chemistry , biochemistry , receptor
The complex formation of the ligands 1,12‐diazaperylene ( dap ), 1,1′‐bisisoquinoline ( bis ), 2,2′‐bipyridine ( bpy ) and 1,10‐phenanthroline ( phen ) with transition metal ions (M = Fe, Co, Ni, Cu, Zn, Ru, Os, Re, Pd, Pt, Ag and Cd) in the gas phase has been studied by electrospray ionization mass spectrometry. With the exception of Ru, Os, Fe, Ni and Cu, singly charged complexes [ML n ] + (n = 1,2) were observed. The complexes of dap and bis with Ru, Os, Fe and Ni ions, and the mixed ligand complexes with bpy and phen , are preferably of the doubly charged type [ML 3 ] 2+ . In addition, collision‐induced dissociation (CID) measurements were employed to evaluate the relative stabilities of these complexes. The CID experiments of mixed‐ligand complexes which contain both dap and phen or dap and bpy exhibit preferential elimination of bpy , indicating that bpy is a weaker ligand than phen and dap . Copyright © 2008 John Wiley & Sons, Ltd.