Framework Materials

Transversal zigzag linkers

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Science  31 Aug 2018:
Vol. 361, Issue 6405, pp. 889-890
DOI: 10.1126/science.361.6405.889-e

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).

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