Metal-Driven and Covalent Synthesis of Supramolecular Grids from Racks: A Convergent Approach to Heterometallic and Heteroleptic Nanostructures

Supramolecular nanogrids were prepared from dynamic supramolecular racks through the coupling of terminal alkynes using
either a covalent (with CuCl/O2) or a coordinative (with [trans-(PEt3)2PtCl2]) approach. Because of the rapid equilibration of the
racks (as tested by exchange reactions), oligomeric adducts
potentially formed in the coupling process will selectively furnish
the nanogrids through an entropically driven self-repair mechanism.
To ascertain the structural assignment, the nanogrids were also
synthesized by an independent strategy.