scholarly journals Hydrophobicity and kinetic inspection of hydroxide ion attack on some chromen-2-one laser dyes in binary aqueous–methanol and aqueous–acetone mixtures: Initial state-transition state analysis

2015 ◽  
Vol 27 (1) ◽  
pp. 54-62 ◽  
Author(s):  
Ezz A. Abu-Gharib ◽  
Rafat EL-Khatib ◽  
Lobna A.E. Nassr ◽  
Ahmed M. Abu-Dief
Keyword(s):  
Transition State ◽  
State Transition ◽  
Aqueous Acetone ◽  
Laser Dyes ◽  
Aqueous Methanol ◽  
Initial State ◽  
Hydroxide Ion ◽  
State Analysis

Initial state and transition state contributions to solvent effects on activation enthalpies for substitution reactions of tris(1,10-phenanthroline)iron(II) in aqueous methanol

1983 ◽  
Vol 8 (3) ◽  
pp. 148-152 ◽  
Author(s):  
Michael J. Blandamer ◽  
John Burgess ◽  
Timothy Digman ◽  
Philip P. Duce ◽  
John P. McCann ◽  
...  
Keyword(s):  
Transition State ◽  
Solvent Effects ◽  
Aqueous Methanol ◽  
Substitution Reactions ◽  
Initial State

The pressure dependence of benzyl chloride solvolysis in aqueous acetone and aqueous dimethylsulfoxide

1970 ◽  
Vol 48 (16) ◽  
pp. 2494-2499 ◽  
Author(s):  
Digby D. Macdonald ◽  
J. B. Hyne
Keyword(s):  
Transition State ◽  
Benzyl Chloride ◽  
Activation Volume ◽  
Aqueous Acetone ◽  
Solvent Composition ◽  
Pressure Data ◽  
Initial State ◽  
First Order ◽  
Solvent Systems ◽  
Aqueous Dimethylsulfoxide

First-order rate constants for the solvolysis of benzyl chloride in a series of aqueous acetone and aqueous dimethylsulfoxide (DMSO) mixtures at 50.100 °C and at various pressures in the range 1–4083 atm are reported. Volume of activation, calculated from the rate/pressure data, is found to exhibit extremum behavior with varying solvent composition in both solvent systems. The activation volumes are dissected into their initial state and transition state contributions by determining the "instantaneous" volumes of solution of benzyl chloride in the solvent systems. The contributions of both the initial state and the transition state to the behavior of the activation volume as a function of solvent composition are discussed.

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