Assembly of Four Ternary Polyoxometalate Aggregates by Integrating Presynthesized {XW9Nb3O40} (X = Si/Ge) Units Using Molybdenum-Oxo Clusters

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2024-12-24 DOI:10.1021/acs.inorgchem.4c04359

Si-Jie Chen, Rui Ge, Li-Hao Hong, Yan-Qiong Sun, Ping-Wei Cai, Cai Sun, Qing-Xin Zeng, Xin-Xiong Li, Shou-Tian Zheng

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Abstract

Polyoxometalates (POMs) have good potential for applications in different fields, including conducting materials, optics, and electrocatalysis. Of particular significance is the synthesis and development of addendum POMs. Molybdenum-oxo clusters, which are renowned for their diverse structures and electronic properties, were utilized to facilitate the synthesis of innovative materials. Herein, we employed presynthesized {XW₉ Nb₃O₄₀} (X= Si/Ge) polyanions as secondary building units and different molybdenum-oxo clusters as linkers. Four new addendum POMs were constructed, including two dimeric compounds Cs₁₀[H₂(SiW₉Nb₃O₄₀)₂(Mo₂O₄C₂O₄)]·19H₂O (1) and Cs₈[H₄(GeW₉Nb₃O₄₀)₂(Mo₂O₄C₂O₄)]·17H₂O (2), and two tetrameric compounds Cs₁₅(NH₄)[(SiW₉Nb₃O₄₀)₄(Mo₄O₆)]·42H₂O (3) and Cs₁₀K₅[H(GeW₉Nb₃O₄₀)₄(Mo₄O₆)]·39H₂O (4). Notably, this is the first report of Mo/W/Nb ternary mixed-addendum POMs. In addition, compounds 3 and 4 facilitate the transfer of protons through extended hydrogen-bonding networks with conductivity values of 1.16 × 10^–2 and 7.73 × 10^–3 S·cm^–1 at 85 °C and 98% relative humidity, respectively. Furthermore, no discernible decline in conductivity was noted over the course of 10 h.

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.