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

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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

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Publication details

The article was received on 10 Jun 2019, accepted on 02 Aug 2019 and first published on 02 Aug 2019


Article type: Communication
DOI: 10.1039/C9DT02463H
Dalton Trans., 2020, Advance Article

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    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, Advance Article , DOI: 10.1039/C9DT02463H

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