Can Coordination-Driven Supramolecular Self-Assembly Reactions Be Conducted from Fully Aliphatic Linkers?

Mehdi Elsayed Moussa (1, 2) , Sloane Evariste (1) , Barbara Krämer (2) , Régis Réau (1) , Manfred Scheer (2) , Christophe Lescop (1)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 Institut für Anorganische Chemie

The reaction between a preassembled CuI bimetallic molecular clip with a short intermetallic distance and a series of fully aliphatic cyano-capped ditopic linkers with increasing lengths was investigated. It is shown that, depending on the length of the ditopic linkers, the rational design of unprecedented supramolecular compact metallacycles containing fully aliphatic walls is possible. The specific preorganized molecular arrangement of the molecular clip used favors stabilizing interlinker London dispersion interactions, which allow, as the length of the linkers increases, the selective formation of discrete compact metallacycles at the expense of 1D coordination polymers. The generalizability of this approach was demonstrated by the reaction of fully aliphatic cyano-capped linkers with two other types of preassembled CuI bimetallic molecular clips that also had short intermetallic distances.

Keywords: London dispersion interactions; Copper; aliphatic linkers; Supramolecular chemistry; metallacycles

Domains: Chemical Sciences; Coordination chemistry

Mehdi Elsayed Moussa, Sloane Evariste, Barbara Krämer, Régis Réau, Manfred Scheer, et al.. Can Coordination-Driven Supramolecular Self-Assembly Reactions Be Conducted from Fully Aliphatic Linkers?. Angewandte Chemie International Edition, 2018, 57 (3), pp.795-799. ⟨10.1002/anie.201709119⟩. ⟨hal-01696987⟩