Abstract: The macroporous chelating resin D751 carries iminodiacetic acid group,the weak acid resin 112×1 carries carboxylic acid group, and these resins behave as solid complexing agents. In this paper the infrared spectra of the resinates of the D751 and the 112×1 resins have been obtained for alkaline earth, rare earth and transition metals, and vibrational assignments for bands believed to be associated with functional groups have been made. The maximum mole ratios of the metal to the functional group have been determined. The nature of the coordination in the D751 and the 112×1 resin is discussed. Good prospects of the separation of alkaline earth and rare earth by using the chelating ion exchange resin D751 is demonstrated.