Riefer Jarno, Zapf Ludwig, Sprenger Jan A P, Wirthensohn Raphael, Endres Sebastian, Pöppler Ann-Christin, Gutmann Marcus, Meinel Lorenz, Ignat'ev Nikolai V, Finze Maik
Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Institut für nachhaltige Chemie & Katalyse mit Bor (ICB), Am Hubland, 97074 Würzburg, Germany.
Julius-Maximilians-Universität Würzburg, Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany.
Phys Chem Chem Phys. 2023 Feb 8;25(6):5037-5048. doi: 10.1039/d2cp05725e.
The synthesis and detailed characterization of low-viscosity room-temperature ionic liquids (RTILs) and [BnPhP] salts with the cyano(fluoro)borate anions [BF(CN)] (MFB), [BF(CN)] (DFB), and [BF(CN)] as well as the new mixed-substituted anion [BFH(CN)] (FHB) is described. The RTILs with [EMIm] or [BMPL] as countercations were obtained in yields of up to 98% from readily available alkali metal salts and in high purities that allow application in electrochemical devices. Trends in thermal stability, melting and freezing behavior, density, electrochemical stability, dynamic viscosity, specific conductivity and ion diffusivity have been assessed and compared to those of the related tetracyanoborate- and cyano(hydrido)borate-RTILs. The crystal structure analysis of the [BnPhP] salts of [BF(CN)] ( = 0-4), [BH(CN)] ( = 1-3) and [BFH(CN)] provided experimental access to anion volumina that together with ion molecular mass, electrostatic potential, shape and chemical stability have been correlated to physicochemical properties. In addition, the cytotoxicity of the [EMIm]-ILs and potassium or sodium salts was studied.
描述了低粘度室温离子液体（RTILs）以及含氰基（氟）硼酸根阴离子[BF(CN)]（MFB）、[BF(CN)]（DFB）和[BF(CN)]以及新型混合取代阴离子[BFH(CN)]（FHB）的[BnPhP]盐的合成及详细表征。以[EMIm]或[BMPL]作为抗衡阳离子的RTILs，由易得的碱金属盐以高达98%的产率获得，且纯度高，可应用于电化学装置。评估了热稳定性、熔化和凝固行为、密度、电化学稳定性、动态粘度、比电导率和离子扩散率的趋势，并与相关的四氰基硼酸盐和氰基（氢）硼酸盐-RTILs进行了比较。对[BF(CN)]（= 0 - 4）、[BH(CN)]（= 1 - 3）和[BFH(CN)]的[BnPhP]盐进行晶体结构分析，获得了阴离子体积的实验数据，这些数据与离子分子量、静电势、形状和化学稳定性一起与物理化学性质相关。此外，还研究了[EMIm]-ILs以及钾盐或钠盐的细胞毒性。
