Control of reactivity.

[a]<p>observed pseudo first order value (10<sup>6</sup> min<sup>−1</sup>).</p>[b]<p>apparent value (10<sup>6</sup> min<sup>−1</sup>) in 10% aqueous acetone.</p>[c]<p>apparent value (10<sup>3</sup>molL<sup>−1</sup>). [d] Lmol<sup>−1</sup>.</p>