Structural and Gas Uptake Studies on Iron(II) β-Diketiminate Metallomacrocycles

Three iron metallomacrocycles were synthesized and characterized using single crystal X-ray crystallography. Varying the amide coligand allows for macrocycles containing three, four, or six iron centers. The metallomacrocycles show extended structures in the solid state that are reminiscent of metal-organic framework structures; thus, the adsorbative properties of the complexes in the solid state have been investigated using N₂. Based on the data, three metallomacrocyles display classical type II isotherms and pore size distributions synonymous with mesoporous materials.