室温附近离子液体中贵金属氧化物的反应
Reactions of noble-metal oxides in ionic liquids near room temperature.
作者信息
Liebertseder Mareike, Donsbach Carsten, Feldmann Claus
机构信息
Institute for Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 D-76131 Karlsruhe Germany
出版信息
RSC Adv. 2023 Apr 11;13(17):11441-11449. doi: 10.1039/d3ra00892d.
The reaction of AgO, AuO, and HgO with CuCl, CuI, AgCl, AgI, AuCl, and AuI in ionic liquids ([EMIm]Cl, [BMIm]Cl) near room temperature (20-80 °C) is evaluated and results in the new compounds (CHN)CuCl, (CHN)AgI, (CHN)AuCl, [(CHN)Hg][CuCl], [(CHN)Hg][AgCl], and [EMIm][AgICl]. Thereof, (CHN)CuCl, (CHN)AgI, (CHN)AuCl, [(CHN)Hg][CuCl], and [(CHN)Hg][AgCl] are NHC complexes (NHC: N-heterocyclic carbene) with M-C bonds (M: Cu, Ag, Au, Hg). Whereas (CHN)CuCl and (CHN)AgI crystallize as single molecules, (CHN)AuCl is dimerized aurophilic interactions. [(CHN)Hg][CuCl] and [(CHN)Hg][AgCl] exhibit Hg atoms with two Hg-C bonds. Moreover, (CHN)AgI shows intense green fluorescence at room temperature with a quantum yield of 44%, whereas all other compounds do not show any emission at room temperature. Finally, [EMIm][AgICl] is not an NHC compound but contains [AgIICl] chains with infinite d-d interaction of the silver atoms. The title compounds are characterized by single-crystal structure analysis, infrared spectroscopy, thermogravimetry, and fluorescence spectroscopy.
评估了室温（20 - 80°C）附近离子液体（[EMIm]Cl、[BMIm]Cl）中AgO、AuO和HgO与CuCl、CuI、AgCl、AgI、AuCl和AuI的反应，得到了新化合物（CHN）CuCl、（CHN）AgI、（CHN）AuCl、[(CHN)Hg][CuCl]、[(CHN)Hg][AgCl]和[EMIm][AgICl]。其中，（CHN）CuCl、（CHN）AgI、（CHN）AuCl、[(CHN)Hg][CuCl]和[(CHN)Hg][AgCl]是具有M - C键（M：Cu、Ag、Au、Hg）的NHC配合物（NHC：N - 杂环卡宾）。（CHN）CuCl和（CHN）AgI以单分子形式结晶，（CHN）AuCl通过亲金相互作用二聚。[(CHN)Hg][CuCl]和[(CHN)Hg][AgCl]显示出具有两个Hg - C键的Hg原子。此外，（CHN）AgI在室温下呈现强烈的绿色荧光，量子产率为44%，而所有其他化合物在室温下均无任何发射。最后，[EMIm][AgICl]不是NHC化合物，而是包含具有银原子无限d - d相互作用的[AgIICl]链。通过单晶结构分析、红外光谱、热重分析和荧光光谱对标题化合物进行了表征。
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