On a Quantitative Scale for Lewis Acidity and Recent Progress in Polynitrogen Chemistry

Abstract

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Metal chloride-catalyzed acetylation of starch: Synthesis and characterization

“…Kobayashi et al [62] proposed a kinetic and reactivity classification based on a large range of Lewis acids. Many other notable contributions to Lewis acid scales have also been made by several research groups over the years [63][64][65][66][67][68] . Table 4 and depicted in black (wheat starch sample), green (sample B3), blue (sample B2), and red (sample B1).…”

Metal Analysis of Structural Adhesives

“…Christe and Dixon [4] predicted that the strongest Lewis acid is SbF À 5 as it had the strongest fluoride affinity. They have also shown that fluoride is a 'hard' base while 'chloride' is a soft base.…”

“…Epoxy adhesive formulation Additives 1 þ 0:25% Ge(AcAc)BF 4 No fillers 2 þ 0:25% Ge(AcAc)BF 4 6% SiO 2 þ 6% CaCO 3 3 þ 0:25% Ge(AcAc)BF 4 12% SiO 2 4 þ 0:25% Ge(AcAc)BF 4 8% SiO Table 6.14 are dissolved in the same solvent as that for standards and stirred prior to the pumping and nebulisation. The concentrations are determined and corrected for viscosity differences using the internal standard for both metals against the calibration curves prepared.…”

“…4 Results of comparison of destructive sample preparation methods for the determination of the concentration of Nb in cyanoacrylate adhesive, in mg/ml(ppm)…”

Stabilization of SF5– with Glyme-Coordinated Alkali Metal Cations

“…[1][2][3][4][5][6] 5 and [Cs (18-crown-6)][SF5], 6 but only a limited number of examples are vacuum-stable owing to the low Lewis acidity of SF4. [7][8] Scheme 1 summarizes the preparative routes for the known [SF5] − salts along with information on the SF4 dissociation pressure.…”