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Schlagwörter:
N ligands; Iron; Azides; Mass spectrometry
Zusammenfassung:
Mass spectrometry is used to investigate the fragmentation of the ligated azidoiron cation [(cyclam‐acetato)Fe(N3)]+, which is accessible in the gas phase by electrospray ionization of a solution of its hexafluorophosphate salt in methanol/water. Upon collisional activation, mass‐selected [(cyclam‐acetato)Fe(N3)]+ undergoes competing loss of dinitrogen or HN3 as the prevailing fragmentations. The former dissociation pathway is investigated in detail in order to determine whether or not the free, high‐valent iron nitride [(cyclam‐acetato)FeN]+ is formed. The evidence obtained indeed supports the formation of the iron nitride species as an intermediate, although the long‐lived ion sampled after mass selection may also have undergone further rearrangements.
