A symmetry interaction approach to [M₂L₂]⁴⁺ metallocycles and their self-catenation

Abstract

A symmetry interaction approach to [M2L2]4+ metallocycles and their self-catenanes.

Directing metallo-supramolecular assembly through complementarity

“…11d), the second of these having a longer cavity by virtue of its phenyl spacer. 80 With 31-short, the 2 + 2 metallo-cycle was the only product, regardless of concentration or temperature. But with 31-long, increasing concentration resulted in the emergence of a new species in the 1 H NMR spectrum.…”

Metallo‐Supramolecular Self‐Assembly with Reduced‐Symmetry Ligands

“…For the elongated ligand 11, however, increasing the concentration of both the Pd(II) and Pt(II) complexes led to formation of second species, determined to be the metallo- [2]catenanes, arising from interlocking of two metallacycles ( Figure 5b). [34] This approach has also been shown to be effective for the construction of three-dimensional structures. Eddaoudi and coworkers reported the self-assembly of In(III) with 2,5-pyridinedicarboxylic acid (H 2 12) under solvothermal conditions.…”

Cover Feature: (ChemPlusChem 5/2020)

“…They next reported a ligand with a tridentate 2-(1H-pyrazol-1-yl)-6-(1H-1,2,3-triazol-4-yl)-pyridine site and a single monopyridyl arm (L17, Figure 14). [35] In 2 : 2 combination with Pd II or Pt II in DMSO, dinuclear [M 2 L17 2 ] 4 + complexes were formed at low concentrations. At higher concentrations, ([M 2 L17 2 ]�[M 2 L17 2 ]) 8 + metallo-catenanes were observed, in up to 4 : 1 ratios by 1 H NMR spectroscopic integration.…”