Estimation of hydrocarbon solubilities in hydrofluorocarbons
作者:Michael Van Der Puy、Andrew J. Poss、Phillip J. Persichini、Lois A.S. Ellis
DOI:10.1016/0022-1139(93)02960-m
日期:1994.6
A new solubilityparameter, SP, for hydrofluorocarbons (HFCs) has been developed (SP=1.175 ln(np)+ 0.025H-0.063F-0.028α-0.018β where np depends on the molar volume and the molar refractivity; H and F are the number of hydrogens and fluorines, respectively, in the molecule; and α and β are the respective numbers of H-C-F and H-C-C-F connections). Values of SP have been used to predict if an HFC would
已经开发出用于氢氟碳化合物(HFC)的新溶解度参数SP(SP = 1.175 ln(np)+ 0.025 H -0.063 F -0.028α-0.018β,其中np取决于摩尔体积和摩尔折射率;H和F分别是分子中氢和氟的数目;而α和β分别是HCF和HCCF连接的数目。SP的价值HFC已被用来预测HFC在25°C下对于各种碳氢化合物是否是良好的溶剂。在异构HFC族中,对烃具有最大溶解能力的单个HFC是那些氟与氢的分离度最大的HFC。将希尔德布兰德溶解度参数δ与半经验SP值进行比较。
Fluoro-ketones IV. Synthesis of phenylperfluoroalkyl ketones - mechanism of reaction between phenyllithium and fluoroesters
作者:Loomis S. Chen、Grace J. Chen、Christ Tamborski
DOI:10.1016/s0022-1139(00)82308-8
日期:1981.9
Although fluorine containing ketones (RfC(O)Rf and RfC(O)R, Rf = perfluoroalkyl) have been prepared from the reaction between organolithium reagents and perfluoroalkyl esters, the reaction has not found general applicability. Variable yields of ketones and co-production of secondary and tertiary alcohol by-products have in most instances been experienced. We have examined in more detail the factors
尽管已经通过有机锂试剂与全氟烷基酯之间的反应制备了含氟的酮(R f C(O)R f和R f C(O)R,R f =全氟烷基),但是该反应尚未发现普遍适用性。在大多数情况下,酮的产量可变以及仲醇和叔醇副产物的联产。我们已经更详细地研究了影响酮产物和副产物形成的因素,例如温度,加成方式和全氟烷基酯结构。通过控制实验条件,C 6 H 5 C(O)R f的优异收率可以得到化合物。已分离出半缩酮(II)的锂盐,并显示其为酮生产中的活性中间体。盐的稳定性及其与溶剂的潜在反应决定了反应产物的类型。低温有利于半缩酮的锂盐的稳定性,由此在水解时产生高产率的酮。
Electrolyte solution, electrochemical device, lithium ion secondary battery, and module
申请人:DAIKIN INDUSTRIES, LTD.
公开号:US10923764B2
公开(公告)日:2021-02-16
The present invention provides an electrolyte solution in which a decrease in capacity retention is suppressed and an increase in gas production is suppressed even when stored at high temperatures. Provided is an electrolyte solution containing: a compound (1) represented by formula (1): CF3CFX11COOR11, wherein X11 is a hydrogen atom, a fluorine atom, or a C1-C3 alkyl group in which hydrogen atoms are optionally replaced by fluorine atoms, and R11 is a C1-C3 alkyl group in which hydrogen atoms are optionally replaced by fluorine atoms; a fluorinated carbonate; and a cyclic acid anhydride.