Partition coefficients of ketones, phenols, aliphatic and aromatic acids, and esters in n-hexane/nitromethane
作者:Urszula Kotowska、Valery Isidorov
DOI:10.2478/s11532-011-0060-4
日期:2011.10.1
in sample preparation and in countercurrent and liquid-liquid chromatographic separations. Partition coefficients are widely used in toxicology, environmental, and analytical chemistry. The K hn determination procedure for the n -hexane/nitromethane system was optimized and partition coefficients for 99 ketones, esters and trimethylsilyl derivatives of phenols, aliphatic and aromaticacids were determined
液-液分配用于样品制备以及逆流和液-液色谱分离。分配系数被广泛用于毒理学,环境和分析化学中。该 ķ HN 用于确定过程 Ñ 正己烷/硝基甲烷体系进行了优化和分配系数为99酮,酯和酚的三甲基甲硅烷衍生物,测定脂族和芳族酸。对于130种化合物, 使用 K hn 与其他理化和结构参数之间的数学关系来预测 K hn 值 。
LiMOB, an Unsymmetrical Nonaromatic Orthoborate Salt for Nonaqueous Solution Electrochemical Applications
作者:Wu Xu、Alan J. Shusterman、Robert Marzke、C. Austen Angell
DOI:10.1149/1.1651528
日期:——
acetonitrile, dimethyl carbonate, and propylene carbonate, but has moderate solubility in γ-butyrolactone (GBL) and N,N-dimethylformamide (DMF), and high solubility in dimethylsulfoxide (DMSO). The 0.5 M solutions of LiMOB in GBL, DMSO, and DMF show high conductivities (5.0 X 10 -3 S cm -1 , 5.1 × 10 -3 S cm -1 , and 11.8 X 10 -3 S cm -1 at 25°C, respectively) relative to most 0.5 M nonaqueous solutions. Even
描述了成功的原硼酸锂盐双(草酸根)硼酸锂 (LiBOB) 的不对称版本的合成、表征、离子电导率、电化学稳定性和锂离子传输数。盐,锂(丙二酸草酸)硼酸盐 (LiMOB),在高达 273°C 的温度下是热稳定的。难溶于1,2-二甲氧基乙烷、四氢呋喃、乙腈、碳酸二甲酯、碳酸丙烯酯等常用有机溶剂,但在γ-丁内酯(GBL)和N,N-二甲基甲酰胺(DMF)中溶解度适中,高在二甲基亚砜 (DMSO) 中的溶解度。LiMOB 在 GBL、DMSO 和 DMF 中的 0.5 M 溶液显示出高电导率(5.0 X 10 -3 S cm -1 、5.1 × 10 -3 S cm -1 和 11.8 X 10 -3 S cm -1 在 25° C,分别)相对于大多数 0.5 M 非水溶液。即使是 0.08 M LiMOB-PC 溶液的室温电导率也接近 10 -3 S cm -1 。LiMOB 溶液的电导率接近 LiBOB
Chloride-Free Method to Synthesise New Ionic Liquids with Mixed Borate Anions
作者:Christian Schreiner、Marius Amereller、Heiner J. Gores
DOI:10.1002/chem.200802243
日期:2009.2.23
Chloride avoided! A new chloride‐free method to synthesise ionicliquids (ILs) with mixed borateanions, starting from tetrafluoroborate compounds, has been developed and a number of examples including some new ILs are presented (see scheme; [CAT]+=cation). It is widely applicable and allows access to mixed borates with various types of ligands in a straightforward manner.