Mass Spectrometric Characterization of Macrocyclic Complexes Based on ortho-Aminobenzaldehyde and S-alkylisothiosemicarbazides Capable of Binding Exogenous Cations

摘要

Mixed-metal species have significant involvement in molecular magnetism. One of the strategies to design such entities is to use mononuclear complexes that contain peripheral functional groups capable of binding another metal ion or complex. Basically, this strategy uses metal complexes as ligands. We focused our interest on generating and characterizing new polynuclear oxamidato-bridged assemblies based on macrocyclic complexes derived from chelate precursors - products of template-assisted reactions [1] between S-alkylisothiosemicarbazides and ortho-aminobenzaldehyde. Theoretical methods were used in conjunction with MS to confirm that the observed complexation behavior, with generation of supramolecular mixed-metal species, was attributable to the properties of the complexes that contain peripheral functional groups capable of binding other metal-containing entities.