Article (Scientific journals)
Generalization of the CCS-Mass Equation to Account for Variations in Molecular Density in an Iron-Ligand Complex Growing System.
Kune, Christopher; Far, Johann; Rappe, Sophie et al.
2025In Rapid Communications in Mass Spectrometry, p. 10042
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Keywords :
CCS‐Mass Trends; Inorganic complexes; Ion Mobility; apparent density
Abstract :
[en] [en] RATIONALE: In this work, the CCS-mass trends equation has been revisited to consider apparent changes in the ion density. METHODS: The ion mobility-derived collision cross section (IM-derived CCS) of negatively, single-charged Fe(II) and Fe (III) metal centers coordinated with three or four halide or linear alkyl carboxylate ligands generated by electrospray operating in the negative ionization mode were obtained using a T-wave mobility cell. RESULTS: The CCS-mass trends were fitted using the equation CCS = A × massPow (where A is an apparent density parameter and Pow is a shape parameter). Iron-halide complexes led to Pow parameters well below the typical limit of 0.5, which could only be explained by refining the fitting equation using a linear combination of these A and Pow parameters. Their physical meaning is described in terms of mass distribution within the volume of the iron-ligand complex ions. CONCLUSIONS: The analysis of the CCS-mass trend of iron-halide and iron-carboxylate complexes allows us to predict the IM-derived CCS and the CCS-mass trends of combinations of iron-halide/carboxylate complexes. The results show no differences in trend between planar trigonal and tetrahedral geometries as described by the valence shell electron pair repulsion (VSEPR) theory.
Disciplines :
Chemistry
Author, co-author :
Kune, Christopher  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Far, Johann  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique inorganique
Rappe, Sophie ;  Université de Liège - ULiège > Département de chimie (sciences)
Haler, Jean ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie analytique inorganique
Demonceau, Albert ;  Université de Liège - ULiège > Département de chimie (sciences)
Delaude, Lionel  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie organométallique et catalyse homogène
Eppe, Gauthier  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
De Pauw, Edwin  ;  Université de Liège - ULiège > Département de chimie (sciences)
Language :
English
Title :
Generalization of the CCS-Mass Equation to Account for Variations in Molecular Density in an Iron-Ligand Complex Growing System.
Publication date :
11 April 2025
Journal title :
Rapid Communications in Mass Spectrometry
ISSN :
0951-4198
eISSN :
1097-0231
Special issue title :
special issue in honnor of Pr Jean-Francois Muller
Pages :
e10042
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Funding text :
co-funded by the Université de Liège
Commentary :
Supporting information: https://www.webofscience.com/api/gateway/wos/peer-review/10.1002/rcm.10042
Available on ORBi :
since 11 April 2025

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