Fragmentation of the (Cyclam‐acetato)iron Azide Cation in the Gas Phase

Schröder, Detlef; Schwarz, Helmut; Aliaga‐Alcalde, Núria; Neese, Frank

doi:10.1002/ejic.200600805

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Fragmentation of the (Cyclam‐acetato)iron Azide Cation in the Gas Phase

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Schröder, D., Schwarz, H., Aliaga‐Alcalde, N., & Neese, F. (2007). Fragmentation of the (Cyclam‐acetato)iron Azide Cation in the Gas Phase. European Journal of Inorganic Chemistry, 2007(6), 816-821. doi:10.1002/ejic.200600805.

Cite as: https://hdl.handle.net/21.11116/0000-0008-3631-4

Abstract

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.