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A series of Wells-Dawson and Keggin-based compounds with uncoordinated S donors as fluorescence sensors to Hg2+
Journal of Coordination Chemistry ( IF 1.9 ) Pub Date : 2019-12-13 , DOI: 10.1080/00958972.2019.1699914
Jun Ying 1 , Ya-Guang Chen 1 , Xiu-Yan Wang 1
Affiliation  

Abstract Through using a S-containing ligand 2,2’-dimethyl-4,4’-bithiazole (dbt), a series of Wells-Dawson and Keggin-based compounds, {Zn(dbt)3}{Zn(dbt)2(H2O)}2{HP2WVWVI17O62}·4H2O (1), {Cd(dbt)2(H2O) (HP2WVWVI17O62)}{Cd(dbt)3}{Cd(dbt)2(H2O)}·13H2O (2), {Cd2(dbt)4Cl} {PW12O40} (3) and {Cd2(dbt)4}{SiW12O40} (4), were synthesized under hydrothermal conditions and structurally characterized. In 1, there are three dissociated subunits: Wells-Dawson anion, {Zn(dbt)3}2+ and {Zn(dbt)2(H2O)}2+. In 2, the mono-supporting Wells-Dawson anions exhibit abundant hydrogen bonding interactions with discrete {Cd(dbt)3}2+ and {Cd(dbt)2(H2O)}2+ mononuclear coordination complexes, constructing a supramolecular layer. Compound 3 has a binuclear Cd cluster {Cd2(dbt)4Cl}4+ with a Cl as a bridging atom. The Keggin anions link these binuclear Cd clusters alternately to build a 1D chain. In 4, a pair of {Cd(dbt)2}2+ subunits connect adjacent Keggin anions and a 1D chain is formed. In these four compounds, only the N donors coordinate with Zn or Cd and the S atoms are uncoordinated. These compounds show good fluorescence sensing performance to Hg2+. We also studied the electrochemical and photocatalytic properties of 1–4. These compounds also can act as electrochemical sensors for the detection of nitrite. Graphical Abstract

中文翻译:

一系列基于 Wells-Dawson 和 Keggin 的化合物,具有未配位的 S 供体作为 Hg2+ 的荧光传感器

摘要 通过使用含硫配体 2,2'-二甲基-4,4'-联噻唑 (dbt),一系列 Wells-Dawson 和 Keggin 基化合物 {Zn(dbt)3}{Zn(dbt)2 (H2O)}2{HP2WVWVI17O62}·4H2O (1), {Cd(dbt)2(H2O) (HP2WVWVI17O62)}{Cd(dbt)3}{Cd(dbt)2(H2O)}·13H2O (2), {Cd2(dbt)4Cl} {PW12O40} (3) 和 {Cd2(dbt)4}{SiW12O40} (4) 在水热条件下合成并进行结构表征。在 1 中,存在三个解离亚基:Wells-Dawson 阴离子、{Zn(dbt)3}2+ 和 {Zn(dbt)2(H2O)}2+。在 2 中,单支撑的 Wells-Dawson 阴离子与离散的 {Cd(dbt)3}2+ 和 {Cd(dbt)2(H2O)}2+ 单核配位络合物表现出丰富的氢键相互作用,构建了一个超分子层。化合物 3 具有双核 Cd 簇 {Cd2(dbt)4Cl}4+,其中 Cl 作为桥接原子。Keggin 阴离子交替连接这些双核 Cd 簇以构建一维链。在4中,一对{Cd(dbt)2}2+亚基连接相邻的Keggin阴离子并形成一维链。在这四种化合物中,只有 N 供体与 Zn 或 Cd 配位,而 S 原子未配位。这些化合物对 Hg2+ 显示出良好的荧光传感性能。我们还研究了 1-4 的电化学和光催化性能。这些化合物还可以作为检测亚硝酸盐的电化学传感器。图形概要 我们还研究了 1-4 的电化学和光催化性能。这些化合物还可以作为检测亚硝酸盐的电化学传感器。图形概要 我们还研究了 1-4 的电化学和光催化性能。这些化合物还可以作为检测亚硝酸盐的电化学传感器。图形概要
更新日期:2019-12-13
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