Investigation into the kinetics of the reaction between peroxodisulphate(VI) ions and iodide ions

Outline of the plan: After establishing knowledge about reaction kinetics, I decided to investigate in this field. I originally introduced this specific reaction 1 in EP 6.4 and introduced it in AA 2.1. I am interested in using this reaction as a means to potentially support and quantify some of the theories I have studied and can be extended to them. Goal: Use the reaction of the clock, investigate the concentration effect of each reactant, and use the result to find the speed equation of that particular reaction.

The SN1 reaction is usually carried out in a polar protic solvent such as water, ethanol, acetic acid or the like. The reaction between t-butyl bromide and hydroxide ion produces t-butanol and follows first-order kinetics, ie the reaction rate depends on the concentration of only one reactant (ie t-butyl bromide) . The first step is the slowest and reversible. It involves C - Br bond cleavage obtained by solvating halogenated ions with protons of protic solvents. Since the reaction rate depends on the slowest process, the reaction rate depends only on the concentration of the alkyl halide and not on the concentration of the hydroxide ion. In addition, the higher the stability of the carbocation, the easier it is to form from the alkyl halide, and the faster the reaction rate. In the case of alkyl halides, 30 alkyl halides undergo a very fast SN 1 reaction due to the high stability of 30 carbocations.

ASI does not seem to be compatible with this mechanism. In order to clarify the role of FEN metal ion, here we report a detailed evaluation of magnesium ion response of T5 FEN. Kinetic studies generally indicate that the T 5 FEN catalytic reaction requires at least three magnesium ions, which means that additional metal ions are bound. In order to catalyze the hydrolysis of phosphodiesters, it is desirable to have at least two ions in combination with different affinities. Analysis of the inhibition of calcium ions for the reaction is consistent with the need for two possible cofactors (Mg 2 - or Mn 2 -). The apparent substrate association constant is maximized by combining the two magnesium ions. This may reflect a metal-dependent mismatch of the biphasic substrate necessary to place the fissile phosphate in contact with the metal ion. Comprehensive results showed that T5 FEN mainly uses bimetallic ion mechanism due to chemical catalysis, but its overall metal biochemistry requires three ions and is more complicated.