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Updated: Mar 25, 2026

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Self-assembly of Pd2L2 Metallacycles Owning Diversely Functionalized Racemic Ligands
Tamara Rama1, Cristina Alvariño1, Olaya Domarco1
1Departamento de Química Fundamental and Centro de Investigacións Científicas Avanzadas, Facultade de Ciencias, Universidade da Coruña , E-15071 A Coruña, Spain.
Abstract:
We present herein the efficient palladium(II)-directed self-assembly in water of a series of nine new diversely functionalized metallacycles, owning hydroxy/alkoxycarbonyl/azidoalkyl exo pendant groups attached to ditopic N-monoalkyl/aryl-4,4'-bipyridinium/2,7-diazapyrenium ligands. The highly convergent and versatile synthetic route for the ligands uses the Zincke reaction between (dinitrophenyl)bipyridinium/diazapyrenium salts and racemic amines as the key step. The stereochemical outcome of the self-assembly of the Pd2L2 species is discussed on the basis of density functional theory quantum-chemical calculations.
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