204263-36-5Relevant academic research and scientific papers
Design, synthesis and metal binding properties of a mixed-donor macrobicycle
Mascal, Mark,Hansen, Jens,Blake, Alexander J.,Li, Wan-Sheung
, p. 355 - 356 (1998)
A cryptand is resolved into its three independent macrocyclic components leading to novel, dynamic metal ion complexation.
sym-[5.5.5]Heterocyclophanes: Structurally well-defined, mixed π/heteroatom-donor macrobicyclic cages
Hansen, Jens,Blake, Alexander J.,Li, Wan-Sheung,Mascal, Mark
, p. 3371 - 3376 (2007/10/03)
Structural considerations for achieving conformational stability in cyclophanes are applied as design criteria in the synthesis of sym-[5.5.5]triaza- and sym-[5.5.5]trioxacyclophane macrobicycles. These compounds act as dynamic hosts in which the metal ion migrates between equivalent, C3-related (η1-C)2N2 coordination sites. The metal-arene interaction may alternatively be described as three centre, two-electron σ complexation to the C-H bond. Crystal structures of the copper(I) and silver(I) complexes show that little reorganization is required on the part of the ligand to accommodate the metal, and the former provides an unusual, structurally characterized example of eta-bonding of an arene to Cu1.
