A Supramolecular Synthon for H-Bonded Transition Metal Arrays.

The heterocycle melamine appended to a 14-membered polyazamacrocyclic copper(II) complex ring exhibits a strong propensity for ordered arrays driven by H-bonding forces. In this work, the X-ray crystal structures of three distinctly different arrays based on the same macrocyclic complex are reported, comprising cocrystals with barbituric acid (a sheet structure) and cyanuric acid (a linear chain) and the parent complex (a linear tape).