Macrocyclic pentamers functionalised around their periphery as potential building blocks

Abstract

The elaboration of a five-fold symmetric macrocyclic aromatic pentamer bearing peripheral benzyloxy and hydroxyl groups is described. The macrocycle bearing internal fluorine substituents has been prepared via a one-pot procedure.

Pseudo-5-Fold-Symmetrical Ligand Drives Geometric Frustration in Porous Metal–Organic and Hydrogen-Bonded Frameworks

“…In this work, we introduced geometric frustration through a linker with pseudo-C 5 symmetry as the symmetry cannot be propagated to a classical periodic lattice based on translation, while periodic lattices based on rotation and translation such as in a quasicrystal could support this symmetry. , Several strategies exist for introduction of C 5 symmetry in organic building blocks, − as these are used for the synthesis of large cage coordination compounds ,− or as metal nodes for the synthesis of quasicrystal approximants . As introducing C 5 symmetry can be synthetically challenging, , instead we designed a pseudo-C 5 -symmetrical ligand based on a pyrrole core (see method section, Figure S2).…”