Triphenylene based metal-pyridine cages. Issue 43 (24th October 2019)

• Record Type: Journal Article
• Authors: Berton, Giacomo; Lorenzetto, Tommaso; Borsato, Giuseppe; Sgarbossa, Paolo; Santo, Claudio; Visentin, Fabiano; Fabris, Fabrizio; Scarso, Alessandro
• Is Part Of: Tetrahedron letters. Volume 60:Issue 43(2019)
• Publication Date: 2019-10-24
• Subjects: Triphenylene -- Coordination cage -- Palladium -- Platinum -- Supramolecular chemistry -- Exchange process -- C3-symmetry; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tetlet.2019.151202
• Languages: English
• ISSNs: 0040-4039

Abstract

Graphical abstract: Highlights: We prepared three tris -pyridine containing triphenylene polydentate ligands. Coordination with Pd(II) or Pt(II) metal corners led to different assemblies. 19 F NMR was fundamental to monitor the formation of clear M3 L2 aggregates. M3 L2 cage was confirmed by 2D-DOSY and semi-empirical calculations. The stereochemistry of the assemblies was considered as well. Abstract: C 3 -symmetric pyridine containing tris-benzyl- O -substituted hexahydroxytriphenylene derivatives were prepared and used in combination with square-planar Pd(II) and Pt(II) complexes for the self-assembly of molecular cages in solution. The formation of a trigonal bipyramid M3 L2 cage was demonstrated by multinuclear NMR analyses and pseudo 2D DOSY experiments and supported by semi-empirical calculations.