[H+]在0.01～0.70mol?L-1范围内,离子强度为1.00mol?L-1,[Fe(III)]>>[配体]、[H+]>>[配体]的条件下,研究了Fe(III)与2,3-二羟基苯磺酸钠(Tiron)的配位反应.发现当[H+]≤3.00×10-2mol?L-1时,[Fe(III)]2对反应速率有明显的贡献.求得了相关反应的动力学参数,从而揭示了FeOH2+和FeOH24+与Tiron配位的解离反应途径及FeOH32+的缔合反应机制,并提出了该配位反应的可能机理. [H +] is in the range of 0.01 to 0.70 mol? L-1 and the ionic strength is 1.00 mol? L-1, [Fe (III)] >> [ligand], [H +] >> [ligand] , The coordination reaction between Fe (III) and sodium Tiron was studied. It was found that [Fe (III)] 2 Which has a significant contribution to the reaction rate. The kinetic parameters of the reaction were obtained, which revealed the dissociation reaction pathway of FeOH2 + and FeOH24 + coordination with Tiron and the association mechanism of FeOH32 +, and proposed the possible mechanism of the coordination reaction .