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Multifunctional Ionic Liquids from Rhodium(I) Isocyanide Complexes: Thermochromic, Fluorescence, and Chemochromic Properties Based on Rh−Rh Interaction and Oxidative Addition
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2018-03-22 , DOI: 10.1002/chem.201800333
Takumi Tominaga 1 , Tomoyuki Mochida 1
Affiliation  

Square‐planar rhodium(I) isocyanide complexes exhibit unique chemical reactivities such as the formation of Rh−Rh bonds and oxidative addition. This paper details the syntheses and properties of multifunctional ionic liquids containing RhI isocyanide complexes [Rh(nBuNC)4]X (X=Tf2N (=N(SO2CF3)2), Nf2N (=N(SO2C4F9)2), FSA (=N(SO2F)2), CF3BF3). Salts with Tf2N and Nf2N were liquids, whereas those with FSA and CF3BF3 were solids at room temperature. The salts exhibited thermochromism in the liquid state, changing from orange at high temperatures to blue‐purple at lower temperatures. This is based on the equilibrium between monomer, dimer, and other oligomers associated with Rh−Rh bond formation. The salts also exhibited fluorescence. Exposure of the Tf2N salt to methyl iodide vapor produced ionic liquid mixtures [Rh(nBuNC)4]x[Rh(nBuNC)4IMe](1−x)[Tf2N], concomitant with a color change from purple to red, orange, and yellow, extending the thermochromic color range. The reaction of the Tf2N salt and iodine produced mononuclear and polynuclear iodine adducts. Thus, these liquids exhibit thermochromism, fluorescence, vapochromism, chemical reactivities, and characteristic properties of ionic liquids.

中文翻译:

铑(I)异氰酸酯配合物的多功能离子液体:基于Rh-Rh相互作用和氧化加成的热致变色,荧光和化学变色性质

方平面铑(I)异氰酸酯络合物具有独特的化学反应性,例如Rh-Rh键的形成和氧化加成。本文详细介绍了含有Rh I异氰酸酯配合物[Rh(n BuNC)4 ] X(X = Tf 2 N(= N(SO 2 CF 32 -),Nf 2 N(= N) (SO 2 C ^ 4 ˚F 92 - ),FSA(= N(SO 2 F)2 - ),CF 3 BF 3 - )。盐与Tf 2N和Nf 2 N为液体,而具有FSA和CF 3 BF 3的在室温下为固体。这些盐在液态时表现出热致变色,从高温下的橙色变为低温下的蓝紫色。这基于与Rh-Rh键形成相关的单体,二聚体和其他低聚物之间的平衡。这些盐还显示出荧光。Tf 2 N盐暴露于甲基碘蒸气产生的离子液体混合物[Rh(n BuNC)4 ] x [Rh(n BuNC)4 IMe] (1- x [Tf 2N],同时颜色从紫色变为红色,橙色和黄色,扩展了热致变色的颜色范围。Tf 2 N盐与碘的反应产生了单核和多核碘加合物。因此,这些液体表现出热致变色,荧光,气相致变色,化学反应性和离子液体的特性。
更新日期:2018-03-22
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