Satchell, D. P. N. published the artcileQuantitative aspects of Lewis acidity. I. A spectroscopic study of the equilibrium in solution between stannic halides and aromatic amines, Safety of 2-(4-(tert-Butyl)phenoxy)acetic acid, the publication is Journal of the Chemical Society (1964), 4134-42, database is CAplus.
Stannic chloride, bromide, and iodide, and substituted anilines (B) interact reversibly, in dilute solution in o-dichlorobenzene, to form 1B:1SnHal4 adducts. From concentrated solutions, solids are precipitated These are normally brightly colored, and for the primary anilines studied have a 2B:1SnHal4 stoichiometry. For secondary and tertiary anilines the stoichiometry found was 1:1. Steric factors probably prevent octahedral structures involving 2 bulkily substituted N atoms. Equilibrium constants were measured for the interactions in solution and, in all, 23 bases were studied, mostly with stannic chloride. The general order of increasing basicity toward a given stannic halide is very similar to that exhibited toward Broensted acids, though relative basicities are by no means exactly the same. The order of acid strength is SnCl4 > SnBr4 > SnI4 and toward a given base the resp. equilibrium constants are roughly in the ratios 20,000:20:1. From a spectroscopic and structural viewpoint, the adducts fall into 2 types: “anilinium” type species involving spectral behavior similar to that attendant on anilinium-ion formation, and charge-transfer species which exhibit new, long-wavelength absorption. The former adducts result from strong acid-strong base pairs, while progressive weakening of either partner favors charge-transfer interaction. Solvent effects on the charge-transfer absorption and the related equilibrium constants were studied. A number of new pKa values for aqueous solution are also reported.
Journal of the Chemical Society published new progress about 1798-04-5. 1798-04-5 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(4-(tert-Butyl)phenoxy)acetic acid, and the molecular formula is C12H16O3, Safety of 2-(4-(tert-Butyl)phenoxy)acetic acid.
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https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia