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Issue 28, 2017
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Construction of hydrothermally stable beryllium phosphite open-frameworks with high proton conductivity

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Abstract

Two new beryllium phosphite anionic open-frameworks based on Be3P4O12H4 cluster building blocks, formulated as (Him)2·Be3(HPO3)4, were synthesized under solvothermal conditions, where im is imidazole. Interestingly, the use of different alcohols, i.e., isopropanol and n-propanol, as solvents afforded two new anionic open-frameworks with the same chemical composition, but different structures. Compound 1 crystallized in the monoclinic C2/c space group, whereas compound 2 crystallized in the triclinic P[1 with combining macron] space group. Both compounds displayed intersected channels with 8-, 8-, 8-, and 12-membered windows along different directions. Considering Be3P4O12H4 clusters as four-connected nodes, both compounds showed a pcu topology. Notably, the frameworks of both open-frameworks remained stable after soaking in boiling water for one month. Furthermore, compound 1 exhibited a high proton conductivity of 2.03 × 10−3 S cm−1 at 363 K and 98% relative humidity, indicating its potential as a hydrothermally stable proton-conducting material.

Graphical abstract: Construction of hydrothermally stable beryllium phosphite open-frameworks with high proton conductivity

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Publication details

The article was received on 18 May 2017, accepted on 14 Jun 2017 and first published on 16 Jun 2017


Article type: Paper
DOI: 10.1039/C7CE00948H
Citation: CrystEngComm, 2017,19, 3997-4002
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    Construction of hydrothermally stable beryllium phosphite open-frameworks with high proton conductivity

    K. Wang, Y. Jin, L. Jiang, Z. Wang and Q. Zhang, CrystEngComm, 2017, 19, 3997
    DOI: 10.1039/C7CE00948H

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