Isomer of linker for NU-1000 yields a new she-type, catalytic, and hierarchically porous, Zr-based metal-organic framework

Chem Commun (Camb). 2021 Apr 14;57(29):3571-3574. doi: 10.1039/d0cc07974j. Epub 2021 Mar 11.

Abstract

The well-known MOF (metal-organic framework) linker tetrakis(p-benzoate)pyrene (TBAPy4-) lacks steric hindrance between its benzoates. Changing the 1,3,6,8-siting of benzoates in TBAPy4- to 4,5,9,10-siting introduces substantial steric hindrance and, in turn, enables the synthesis of a new hierarchically porous, she-type MOF Zr63-O)43-OH)4(C6H5COO)3(COO)3(TBAPy-2)3/2 (NU-601), where TBAPy-24- is the 4,5,9,10 isomer of TBAPy4-. NU-601 shows high catalytic activity for degradative hydrolysis of a simulant for G-type fluoro-phosphorus nerve agents.