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Updated: Sep 10, 2025

Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
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2-Substituted vs 2,9-Disubstituted Phenanthroline-NiII-halides: Speciation Control and Structural Elucidation in
Ana Mateos-Calbet1, Markus Leutzsch1, Maurice van Gastel1
1Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr, 45470, Germany.
None:
Herein we study the structures of selected 2,9-disubstituted and 2-monosubstituted phenanthroline NiII-dibromido and diiodido complexes via SC-XRD, SQUID magnetometry, UV-vis-NIR and DOSY NMR. In spite of the divergent speciation in solid state and in DMF solution, the NiII-dibromido complexes of both mono- and disubstituted phenanthrolines converge to monomeric species in both THF and CDCl3. On the other hand, the nickel iodide complexes remain as monomers both in solid state and in solution, regardless of ligand substitution patterns.
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