title: Covalent stabilization: a sturdy molecular square from reversible metal-ion-directed self-assembly.
abstract: Supramolecular self-assembly using weak interactions under quasi-equilibrium conditions has provided easy access to very complex but often quite fragile molecules. We now show how a labile structure obtained from reversible transition-metal-directed self-assembly of rods and connectors serves as a template that can be converted into a sturdy structure of identical topology and similar geometry. The process consists of Cu(I)-catalyzed replacement of all rods or connectors terminated with pyridines for analogues terminated with ethynyls, converting dative N→Pt(+) bonds into covalent C-Pt bonds. The procedure combines the facility and high yield of reversible self-assembly with the robustness of covalent synthesis.
authors: Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, USA.
authors: Alexandre G L
authors: AG
authors: Olive
authors: Kamil
authors: K
authors: Parkan
authors: Cecile
authors: C
authors: Givelet
authors: Josef
authors: J
authors: Michl
mesh_terms: D003300:Copper / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D011725:Pyridines; D003300:Copper; C023666:pyridine