A Macrocyclic Polyoxomolybdate with Phosphate and Phosphonate Linkers: Synthesis, Structure, and Proton Conductivity

Fangcheng Liu; Jiaheng Lin; Jianming Ji; Yong Na; Sayaka Uchida; Xikui Fang

doi:10.1021/acs.inorgchem.3c02005

A Macrocyclic Polyoxomolybdate with Phosphate and Phosphonate Linkers: Synthesis, Structure, and Proton Conductivity

Fangcheng Liu
, Jiaheng Lin
, Jianming Ji
, Yong Na
, Sayaka Uchida
, Xikui Fang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
The University of Tokyo

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A coordination macrocycle composed of eight identical [PMo₈O₂₇]⁻ ({PMo₈}) clusters connected by both organic tetraphosphonates and inorganic phosphates, (C₃N₂H₅)₂₉(NH₄)₆H₁₂[(PMo₈O₂₇)₈(C₁₀P₄O₁₂N₂H₂₀)₄(PO₄)₄Cs(Mo₄O₁₀(H₂O)₄)] (C₃N₂H₅⁺ = imidazolium), is presented here. The primary building block, {PMo₈}, is a tetravacant Keggin-type phosphomolybdate that has never been observed before. The compound shows a high proton conductivity of 9.70 × 10^-3 S cm^-1 at 373 K and 98% relative humidity. Control experiments on an imidazolium-free sample demonstrate the critical role of the imidazolium counterions as mobile proton carriers. The contribution of imidazolium necessitates a high activation energy (E_a = 0.502 eV) for proton conduction via the vehicle mechanism.

Original language	English
Pages (from-to)	15340-15345
Number of pages	6
Journal	Inorganic Chemistry
Volume	62
Issue number	38
DOIs	https://doi.org/10.1021/acs.inorgchem.3c02005
State	Published - 25 Sep 2023
Externally published	Yes

Access to Document

10.1021/acs.inorgchem.3c02005

Cite this

@article{045fbcc08d5247eda964c05c7829edda,

title = "A Macrocyclic Polyoxomolybdate with Phosphate and Phosphonate Linkers: Synthesis, Structure, and Proton Conductivity",

abstract = "A coordination macrocycle composed of eight identical [PMo8O27]− (\{PMo8\}) clusters connected by both organic tetraphosphonates and inorganic phosphates, (C3N2H5)29(NH4)6H12[(PMo8O27)8(C10P4O12N2H20)4(PO4)4Cs(Mo4O10(H2O)4)] (C3N2H5+ = imidazolium), is presented here. The primary building block, \{PMo8\}, is a tetravacant Keggin-type phosphomolybdate that has never been observed before. The compound shows a high proton conductivity of 9.70 × 10-3 S cm-1 at 373 K and 98\% relative humidity. Control experiments on an imidazolium-free sample demonstrate the critical role of the imidazolium counterions as mobile proton carriers. The contribution of imidazolium necessitates a high activation energy (Ea = 0.502 eV) for proton conduction via the vehicle mechanism.",

author = "Fangcheng Liu and Jiaheng Lin and Jianming Ji and Yong Na and Sayaka Uchida and Xikui Fang",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

month = sep,

day = "25",

doi = "10.1021/acs.inorgchem.3c02005",

language = "英语",

volume = "62",

pages = "15340--15345",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "38",

}

TY - JOUR

T1 - A Macrocyclic Polyoxomolybdate with Phosphate and Phosphonate Linkers

T2 - Synthesis, Structure, and Proton Conductivity

AU - Liu, Fangcheng

AU - Lin, Jiaheng

AU - Ji, Jianming

AU - Na, Yong

AU - Uchida, Sayaka

AU - Fang, Xikui

PY - 2023/9/25

Y1 - 2023/9/25

N2 - A coordination macrocycle composed of eight identical [PMo8O27]− ({PMo8}) clusters connected by both organic tetraphosphonates and inorganic phosphates, (C3N2H5)29(NH4)6H12[(PMo8O27)8(C10P4O12N2H20)4(PO4)4Cs(Mo4O10(H2O)4)] (C3N2H5+ = imidazolium), is presented here. The primary building block, {PMo8}, is a tetravacant Keggin-type phosphomolybdate that has never been observed before. The compound shows a high proton conductivity of 9.70 × 10-3 S cm-1 at 373 K and 98% relative humidity. Control experiments on an imidazolium-free sample demonstrate the critical role of the imidazolium counterions as mobile proton carriers. The contribution of imidazolium necessitates a high activation energy (Ea = 0.502 eV) for proton conduction via the vehicle mechanism.

AB - A coordination macrocycle composed of eight identical [PMo8O27]− ({PMo8}) clusters connected by both organic tetraphosphonates and inorganic phosphates, (C3N2H5)29(NH4)6H12[(PMo8O27)8(C10P4O12N2H20)4(PO4)4Cs(Mo4O10(H2O)4)] (C3N2H5+ = imidazolium), is presented here. The primary building block, {PMo8}, is a tetravacant Keggin-type phosphomolybdate that has never been observed before. The compound shows a high proton conductivity of 9.70 × 10-3 S cm-1 at 373 K and 98% relative humidity. Control experiments on an imidazolium-free sample demonstrate the critical role of the imidazolium counterions as mobile proton carriers. The contribution of imidazolium necessitates a high activation energy (Ea = 0.502 eV) for proton conduction via the vehicle mechanism.

UR - https://www.scopus.com/pages/publications/85172425497

U2 - 10.1021/acs.inorgchem.3c02005

DO - 10.1021/acs.inorgchem.3c02005

M3 - 文章

C2 - 37695307

AN - SCOPUS:85172425497

SN - 0020-1669

VL - 62

SP - 15340

EP - 15345

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 38

ER -

A Macrocyclic Polyoxomolybdate with Phosphate and Phosphonate Linkers: Synthesis, Structure, and Proton Conductivity

Abstract

Access to Document

Other files and links

Fingerprint

Cite this