Issue 12, 2020

Investigating the effect of positional isomerism on the assembly of zirconium phosphonates based on tritopic linkers

Abstract

We report on the use of a novel tritopic phosphonic linker, 2,4,6-tris[3-(phosphonomethyl)phenyl]-1,3,5-triazine, for the synthesis of a layered zirconium phosphonate, named UPG-2. Comparison with the structure of the permanently porous UPG-1, based on the related linker 2,4,6-tris[4-(phosphonomethyl)phenyl]-1,3,5-triazine, reveals that positional isomerism disrupts the porous architecture in UPG-2 by preventing the formation of infinitely extended chains connected through Zr–O–P–O–Zr bonds. The presence of free, acidic P–OH groups and an extended network of hydrogen bonds makes UPG-2 a good proton conductor, reaching values as high as 5.7 × 10−4 S cm−1.

Graphical abstract: Investigating the effect of positional isomerism on the assembly of zirconium phosphonates based on tritopic linkers

Supplementary files

Article information

Article type
Communication
Submitted
10 Qas 2019
Accepted
02 Leq 2019
First published
02 Leq 2019

Dalton Trans., 2020,49, 3662-3666

Investigating the effect of positional isomerism on the assembly of zirconium phosphonates based on tritopic linkers

M. Taddei, S. J. I. Shearan, A. Donnadio, M. Casciola, R. Vivani and F. Costantino, Dalton Trans., 2020, 49, 3662 DOI: 10.1039/C9DT02463H

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