Multicomponent reassembly of terpyridine-based materials: quantitative metallomacrocyclic rearrangement

Mixing of metallocyclic trimers and tetramers in an exact 1 : 1.5 stoichiometry provided new supramolecular triangles in quantitative yields. Characterization of the new hetero-nuclear metallomacrocycles was achieved by 1H, 2D-COSY, 2D-NOESY, and 13C NMR spectroscopy, along with ESI and TWIM mass spectrometry. Gradient tandem MS (gMS2) provided insight into the stabilities of the binuclear structures.