Self-Discriminating Self-Assembly of Dinuclear Heterochiral Rhombs from Tröger’s Base Derived Bis(pyridyl) Ligands

✍ Scribed by Torsten Weilandt; Ulf Kiehne; Jens Bunzen; Gregor Schnakenburg; Arne Lützen

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 564 KB
• Volume: 16
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/chem.200902993

✦ Synopsis

Abstract

Five racemic dissymmetric bis(pyridyl) ligands based on 2,8‐ or 3,9‐difunctionalised Tröger’s base derivatives have been synthesised. Only those derived from a 2,8‐difunctionalised scaffold were found to undergo selective self‐assembly to discrete self‐assembled dinuclear metallosupramolecular aggregates of rhomboid shape upon coordination to cis‐protected Pd^2+^ or Pt^2+^ ions, as evidenced by ESI mass spectrometry, NMR spectroscopy and single‐crystal X‐ray diffraction. Interestingly, these processes were found to be highly diastereoselective leading to the formation of C~2__v__~‐symmetric heterochiral assemblies in a self‐discriminating manner.