ChemInform Abstract: Molecular Design Based on Inclusion Chemistry. Synthesis, Characterization, and Crystal Structures of a New Family of Lacunar Schiff Base Complexes with Promise as Broad‐Range Host Molecules.

Abstract

ChemInform Abstract The preparation of the new family of complexes (V) is shown in the scheme. The new species provide a protected void or lacuna in the vicinity of a coordination site at the metal, which may facilitate reversible O2 binding by derivatives of appropriate metal ions. The crystal structure determinations of (Va) (P21/c, Z=4) and (Vb) ( P21/n, Z=4) show that the orientation of the roof of the lacuna (formed by the bridging linkage) relative to the approximately planar parent Schiff base ligand is dependent on the substituents on the β-diketone moiety. Further model compounds (VII) demonstrate that the addition of the ether group to the electrophile does not influence its reactivity. Results of cyclic voltammetric studies on the model and lacunar complexes are given.