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- W1567963322 abstract "The kinetics of the reaction between hexamethylenediamine (HMD) and dibasic acids (malonic, succinic, glutaric, and adipic acid) were studied in the temperature range 18–42°C using 1-propanol as solvent. The total order of the reaction is two, first order in HMD and first order in the dibasic acid. The stoichiometry of the reaction is 1:1 and NMR and IR spectral analyses show that the product is an organic salt with and groups present. A mechanism was proposed in which a proton is transferred from the acid molecule to the base through a solvent molecule which acts as a bifunctional catalyst (both as a proton-acceptor and proton donor). Values of the rate constants, Arrhenius activation energies, preexponential factors, and entropies of activation are consistent with the proposed mechanism. There is a very strong evidence to show that the “half-anion” produced in the first ionization of the dicarboxylic acids is the real reactive species." @default.
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- W1567963322 date "1982-06-15" @default.
- W1567963322 modified "2023-09-27" @default.
- W1567963322 doi "https://doi.org/10.1002/macp.1982.021830618" @default.
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