The rates of the solvolysis of eleven 3-and 4-substituted 1-(1-naphthylethyl) chlorides were determined in 80%(v/v) aqueous acetone solution at 45° C. The effect of substituents in 3- and 4-positions of the naphthalene can be correlated with the LArSR relationship (logk⁄ k 0) 3α, 4α=− 5.12 (σ 0+ 1.04Δ\ barσ R+)− 0.12 (correlation coefficient, 0.999; standard deviation,±0.12). The ρ value in the naphthalene is slightly larger and the r value is slightly ...