there are some unusual examples of very stable carbocations that take the form of organic salts. Crystal violet is the common name for the chloride salt of the carbocation whose structure is shown below. Notice the structural possibilities for extensive resonance delocalization...
The Kamlet and Taft basicity parameters βKT, for twelve mixtures of organic solvents with water are reported. Also the data for water-butanols (n-BuOH. i-BuOH. and s-BuOH) and alcohols (MeOH, EtOH. n-PrOH. and i-PrOH)-n-hexane mixtures are given. It was found that in the case...
or a carbon structure of C1-C7 group which may be saturated or unsaturated and cyclic or non-cyclic, and which optionally may be substituted with any of the above preceding groups including hydrocarbon compounds 2-methylpropene, 1-butene, 2-butene, 2-methyl-2-butene, 1-pentene, 2-methyl-2...
1. A process for preparing a hydroxyalkyl (meth)acrylate which comprises reacting at least one compound A which contains at least one epoxide group with at least one compound B which contains at least one carboxylic acid group, wherein A and/or B also contains at least one (meth)acrylate ...
Mesostructured Zr-SBA-16 (3D cubic arrangement, Im3m space group) with different Si/Zr ratio was successfully synthesized by using Pluronic F127 triblock copolymer and n -butanol as a structure directing agent. Successful incorporation of Zr 4+ ions was achieved without any pH adjustments up to ...
All attempts to identify this local minimum resulted in the bidentate structure. This implies, before any quantitative evaluation is considered, that the endocyclic type of activation is energetically disfavored. Likewise, no minimum structure for this coordination was obtained for VL and GBL in the...