CHEM 4701 Lecture Notes - Lecture 16: Opata Language, Inta, Plat
Document Summary
Dissociative mechanism rate law: if don"t have a lot of y k2[y] << k1[x, k2[y] >> k-1[x] => Weak dependence on the nature of your ligand y. Strong dependence on the nature of your ligand x (the outgoing ligand) Dissociative mechanism is most common for octahedral ml6 (m: transition metal) if 1st row transition metal, once you have 6 ligands on, don"t have room for more (due to sterics) -> this applies for 1st and 2nd row transition metals strong dependence on charge (not the oxidation state) of the complex. This charge dependence is opposite for associative mechanism (more positive goes faster) -associative mechanism: increase charge of complex --> faster rate of ligand exchange looking into associative mechanism, more trickier. 1 step = interchange can apply steady state approx. Inorganic chemistry page 3 kobs vs [y]: won"t see saturation behavior. If i still have an associative mechanism, my rate will be strogly dependent on nature of outgoing ligand.
