Parallelogram 3d-4f-5d heterometallic clusters based on trilacunary tungstoantimonates with excellent proton conductivity  

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作  者:Haiying Wang Han Xu Chaolong Chen Yingjie Zhu Yikang Zhang Dongdi Zhang Jingyang Niu 

机构地区:[1]Henan Key Laboratory of Polyoxometalate Chemistry,College of Chemistry and Molecular Sciences,Henan University,Kaifeng 475004,China [2]School of Pharmaceutical Science&Yunnan Key Laboratory of Pharmacology for Natural Products,Kunming Medical University,Kunming 650500,China [3]Collaborative Innovation Center of Chemistry for Energy Materials,State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China

出  处:《Chinese Chemical Letters》2024年第3期528-531,共4页中国化学快报(英文版)

基  金:supported by the National Natural Science Foundation of China(No.22071045);the Excellent Youth Science Fund Project of Henan Province(No.202300410042);the Natural Science Foundation of Henan Province(No.232300420372);Henan University;the State Key Laboratory of Physical Chemistry of the Solid Surface of Xiamen University。

摘  要:Two 3d-4f-5d heterometallic cluster-containing polyoxometalates,formulated as Na_(22){(SbW_(9)O_(33))_(4)[La_(3)W_(6)MO_(18)(H_(2)O)_(8)(CH_(3)COO)_(4)]_(2)}·nH_(2)O(abbreviated as La_(6)M_(2),M=Co/Mn)were synthesized and structurally characterized.Single-crystal X-ray diffraction analyses reveal that the polyanions of La_(6)Co_(2)and La_(6)Mn_(2)consist of the uncommon 3d-4f-5d clusters{La_(6)W_(12)Co_(2)}and{La_(6)W_(12)Mn_(2)},which are encapsulated by four trilacunary Keggin tungstoantimonates to form the parallelogram-shaped title compounds.Additionally,the polyanions can be extended into a two-dimensional(2D)frame by the linkage of peripheral Na+ions.The inner space of the 2D layer was filled with water molecules and thus an H-bonded network was formed,which is expected to exhibit a fascinating proton conductivity.The study of water-assisted proton conduction demonstrated that La_(6)Co_(2)and La_(6)Mn_(2)were temperature-and humiditydependent proton conductors,respectively,and the proton conductivities could reach 1.3×10^(-2)and 2.3×10^(-2)S/cm at 65℃and 90%RH conditions.

关 键 词:POLYOXOMETALATE PARALLELOGRAM HETEROMETALLIC 3d-4f-5d cluster Proton conductivity 

分 类 号:O641.4[理学—物理化学]

 

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