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Synthesis and proton conductivity of two novel molybdate polymers

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Abstract

Two novel molybdate polymers, H4[Co(phen)3]2[NaO(H2O)(τ-Mo8O26)]2·2H2O (1) and H4[TEDA] [γ-Mo8O26]·3H2O (2), (phen = 1,10′-phenanthroline, TEDA = triethylene diamine), were successfully synthesized by a hydrothermal method with MoCl5. Single-crystal X-ray diffraction shows that 1 was a dimer-octamolybdate polymer connected by two Na+ cation, and it is the first molybdate dimer-polymer of [τ-Mo8O26]. Compound 2 was an extended 1D octamolybdate chain connected by contiguous [γ-Mo8O26]. Both 1 and 2 have 1D hydrogen-bond chains for proton-conducting pathways and free H+ counter cations as proton donors. These features make them suitable for potential proton-conducting solid crystal materials. The outstanding conductivities of 3.06 × 10−3 S cm−1 for 1 and 4.18 × 10−4 S cm−1 for 2 were achieved at 85 °C under 97% RH.

Graphical abstract: Synthesis and proton conductivity of two novel molybdate polymers

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Publication details

The article was received on 29 Jul 2018, accepted on 16 Aug 2018 and first published on 01 Sep 2018


Article type: Paper
DOI: 10.1039/C8NJ03781G
Citation: New J. Chem., 2018, Advance Article
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    Synthesis and proton conductivity of two novel molybdate polymers

    L. Xu, Z. Wang, Y. Lu, T. Yan, H. Tian, X. Li, S. Wang, X. Sun, Z. Zhang, T. Dang and S. Liu, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ03781G

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