“…The anation reactions of Co(III), Rh(III), and Cr(III) pentaammine complexes have been extensively studied for a wide range of organic and inorganic entering ligands in aqueous medium.4"21 During the anation process, the ammonia ligands are tightly bound to the metal ion22 and, in most cases,20 are substitution inert. These reactions are generally accepted5 to proceed according to an interchange mechanism:7•23 M(NH3)5OH23+ + X" |M(NH3)50H23+,X1 (1) {M(NH3)5OH23+,X"j M(NH3)5x2+ + h2o (2) where M = Co(III), Rh(III), or Cr(III) and X = Cl, Br, NCS, CH3COO, etc. Burnett18 suggested that ion triplets also participate in the above mechanism at high concentrations of X", although this suggestion was criticized in later work.24…”