Transversal zigzag linkers

Abstract

Framework Materials The linkers for metal-organic frameworks are usually bidentate molecules (for example, dicarboxylic acids) connected by an organic group to create a linear or, in some cases, a bent geometry like isophthalic acid. Guillerm et al. explored the effect of a “zigzag” linker, trans,trans -muconic acid (tmuc), that forces an offset of inorganic building blocks. Reaction with ZrCl4 formed the metal-organic framework Zr6O4(OH)4(tmuc)8(H2O)8, which had an eight-connected bcu topology, a subset of the 12-connected fcu topology seen with linear linkers. This bcu topology was maintained with linkers of even larger transversal width, such as azobenzene-3,3′-dicarboxylic acid. J. Am. Chem. Soc. 140 , 10153 (2018).