A Novel Triangular Macrocyclic Compound, [(tmeda)Pt(azpy)]3(PF6)6·13H2O (tmeda: Tetramethylethylenediamine, azpy: 4,4′-Azopyridine)

Abstract

A novel triangle-shaped macrocyclic complex, [(tmeda)Pt(azpy)]3(PF6)6·13H2O (tmeda: tetramethylethylenediamine, azpy: 4,4′-azopyridine) has been successfully synthesized via self-assembly of [(tmeda)PtCl2] with a bulky capping ligand, tmeda and flexible organic linker, azpy. 1H NMR results show the realization of a triangle-shaped complex as a major component of the self-assembly. The single-crystal X-ray study shows its shape to be an equilateral triangle with ca. 2.1 nm sides.

Recent Developments in the Preparation and Chemistry of Metallacycles and Metallacages via Coordination

“…A recent example of this is the [3 + 3] triangular metallacycle described by Otsubo, Kitagawa, and coworkers, containing tetramethylethylenediamine-capped Pd(II) nodes bridged by 4,4′-azopyridine (Figure 1). 23 The same strategy applies to 3D cages, as exemplified by the small prism described by Habata and co-workers. 24 The ligands used as caps are by no means limited to these classes, however.…”

Using Complementary Ligand Denticity to Direct Metallosupramolecular Structure about Metal Ions with Square‐Planar Geometry

“…The first example was the landmark report by Fujita and coworkers, on the formation of a metallosupramolecular square formed from bis ‐monodentate ligands and a bidentate ligand capping off two cis ‐sites on the metal ion . This ‘ligand‐directed’ approach has been subsequently used to generate squares, triangles and rectangles, as well as three dimensional cages . As with the 1 , 1 , 1 , 1 system, numerous reviews on assemblies of this sort are readily available…”

Cover Feature: (ChemPlusChem 5/2020)

“…The first example was the landmark report by Fujita and coworkers, on the formation of a metallosupramolecular square formed from bis-monodentate ligands and a bidentate ligand capping off two cis-sites on the metal ion. [5] This 'liganddirected' approach has been subsequently used to generate squares, [6] triangles [7] and rectangles, [8] as well as three dimensional cages. [9] As with the 1,1,1,1 system, numerous reviews on assemblies of this sort are readily available.…”