CHE 118A Lecture Notes - Lecture 10: The Corre, Hydrogen Bromide, Phenyl Group
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Orientation in t h e amination of substituted halobenzenes. Application of the concentration of anion x v i i i the steady-state approximation gives for. Substitution of (8) into (7) gives ka"[d] [nhzel k-1 + kz ( 8 ) Let k-,/(k-l + k2) = f(fraction of intermediate anion re- turning to starting material) and k h f / k d " = i, then. Division of (11) by [d] and treatment of [i(l - f ) + 11, 2 4 1 - f ) and - f as constants, gives on integration. "[dl dt (kh + ~ d " ) [ d ] [nh@] - k--lkh k-1 + kz. Similarly, expression (10) is obtained for the rate of disap- pearance of chloroben~ene-2-~h. dt. 2 k ~ " [ h ] [kh29] - k-l k-1 + kz (2ka"[h] [nh@] + ~ d " [ d ] [nhze]) (10) Values of f , and hence k-llkz, were obtained from (12).
