A Two-Dimensional Layered Heteropolyoxoniobate Based on Cubic Sn(IV)-Containing {Sn12Nb56O200} Cages with Good Proton Conductivity Property

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Pub Date : 2024-12-13 DOI:10.1021/acs.inorgchem.4c04197

Ping-Xin Wu, Yu-Jin Lin, Yan-Qiong Sun, Shou-Tian Zheng

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Abstract

The first example of a Sn(IV)-containing heteropolyoxoniobate K₆H₁₈[Cu(en)₂]₈{[Sn(OH)₂]₁₂ (HNb₇O₂₂)₈}·2en·88H₂O (1) is built from nanoscale high-nuclearity cubic {[Sn(OH)₂]₁₂(HNb₇O₂₂)₈} cluster and [Cu(en)₂]²⁺ complexes. The cubic {[Sn(OH)₂]₁₂(HNb₇O₂₂)₈} cage is composed of eight {Nb₇O₂₂} clusters and 12 SnO₆ octahedrons. The eight {Nb₇O₂₂} fragments are situated at the vertices of the cubic cage, while the 12 SnO₆ octahedrons are positioned along the edges of the cubic cage. The [Cu(en)₂]²⁺ complexes link the {[Sn(OH)₂]₁₂(HNb₇O₂₂)₈} clusters into two-dimensional (2D) (4,4) grid-like layers. The N–H···O hydrogen bonds between the [Cu(en)₂]²⁺ complexes and the {[Sn(OH)₂]₁₂(HNb₇O₂₂)₈} clusters link the layers to form a 3D supramolecular structure. Compound 1 exhibits a good proton conductivity of 3.1 × 10^–2 S cm^–1 at 85 °C and 98% relative humidity.

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第一个含锡（IV）异多氧铌酸盐 K6H18[Cu(en)2]8{[Sn(OH)2]12 (HNb7O22)8}-2en-88H2O (1) 的实例是由纳米级高核度立方{[Sn(OH)2]12(HNb7O22)8}簇和[Cu(en)2]2+络合物构建而成。立方{[Sn(OH)2]12(HNb7O22)8}笼由 8 个{Nb7O22}簇和 12 个 SnO6 八面体组成。八个{Nb7O22}片段位于立方笼的顶点，而 12 个 SnO6 八面体则位于立方笼的边缘。Cu(en)2]2+ 复合物将{[Sn(OH)2]12(HNb7O22)8}簇连接成二维（2D）（4,4）网格状层。Cu(en)2]2+ 复合物和{[Sn(OH)2]12(HNb7O22)8}团簇之间的 N-H-O 氢键将各层连接起来，形成三维超分子结构。化合物 1 在 85 °C 和 98% 相对湿度条件下具有良好的质子传导性，达到 3.1 × 10-2 S cm-1。

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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.