The reactivity of p-nitrophenyl esters with surfactants in apolar solvents. VI. Structural effects on the reaction of p-nitrophenyl acetate with alkanediamine bis(dodecanoate) salts

Abstract

The rate of decomposition of p-nitrophenyl acetate has been measured in benzene solutions of a series of alkane-α,ω-diamine bis(dodecanoate) salts.

Me(CH₂)₁₀CO₂^-+NH₃(CH₂)NH₃N^{+ -}O₂C(CH₂)₁₀ME(n=2-7,9,10,12)

The micellar rate constant is affected by the diamine chain length, and the bimolecular rate constant is affected both by the chain length (and whether the number of carbon atoms is even or odd) and by the acidity of the diammonium head groups. The Brönsted plot is linear but the slope in creases with increasing detergent concentration.