Low Melting Tetracyanidoborate Salts with Alkyl‐, Arylammonium, and Pyridinium Cations: Syntheses, Structures, Properties.,ChemistrySelect

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Low Melting Tetracyanidoborate Salts with Alkyl‐, Arylammonium, and Pyridinium Cations: Syntheses, Structures, Properties.
ChemistrySelect ( IF 1.9 ) Pub Date : 2017-12-07 , DOI: 10.1002/slct.201702328
Antje Siegesmund ₁ , Anke Topp ₁ , Christian Nitschke ₁ , Martin Köckerling ₁

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The syntheses and single crystal structures of five new tetracyanidoborate salts with N‐based cations are described. Three of these compounds contain cations with acidic H atoms. The H‐bond strength, expressed by D‐A distances is correlated with a shift of the CN stretching mode frequency in the IR spectra. Melting points are found between 59 °C and 214 °C, i. e. at the borderline between ionic liquids and molten salts. Isothermal annealing indicates slow decomposition. Solubility tests in polar solvents show a strong dependence on the cation.

中文翻译：

具有烷基，丙烯酰胺和吡啶鎓阳离子的低熔点四氰基硼酸盐：合成，结构，性质。

描述了五种带有N基阳离子的新四氰基硼酸盐的合成和单晶结构。这些化合物中的三个含有带有酸性H原子的阳离子。由D–A距离表示的H键强度与IR光谱中CN拉伸模式频率的偏移相关。熔点在59°C至214°C之间，即。e。在离子液体和熔融盐之间的边界处。等温退火表明分解缓慢。在极性溶剂中的溶解度测试显示出对阳离子的强烈依赖性。

更新日期：2017-12-07

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