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- W2039917997 abstract "The arsenite transesterification reaction As(OCH3)3+ HORightleftharpoonsAs(OCH3)2OR+HOCH3(with R equaling benzyl and t-butyl) has been studied in acetonitrile solvent. With benzyl alcohol, K, ΔH°, and ΔS° are 3.6 (25°C), 5.0 kJ mol−1 and 27 J mol−1 K−1 respectively; with t-butyl alcohol, the values are 0.36 (25°C), 4.0 kJ mol−1, and 5 J mol−1 K−1 respectively. The rate law for the approach to equilibrium in the case of benzyl alcohol is: frac−d[As(OCH3)3]dt=kf′[As(OCH3)3][HOCH2Ph]2−kr′[As(OCH3)2(OCH2Ph)][HOCH3][HOCH2Ph]. A mechanism which explains the unusual law has been postulated. The slower t-butyl alcohol reaction proceeds by a different mechanism which apparently involves catalysis by small amounts of water in the solvent. The steric effects are very significant." @default.
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- W2039917997 date "1984-01-01" @default.
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- W2039917997 title "Equilibrium and Rate Data on Some Arsenite Transesterification Reactions" @default.
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- W2039917997 doi "https://doi.org/10.1246/bcsj.57.184" @default.
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