Spectroscopic studies of metal complexes of ethylenediaminetetra-acetic acid in aqueous-solution

Nuttall, R.H. and Stalker, D.M. and McConnell, A.A. (1978) Spectroscopic studies of metal complexes of ethylenediaminetetra-acetic acid in aqueous-solution. Talanta, 25 (8). pp. 425-434. ISSN 0039-9140 (http://dx.doi.org/10.1016/0039-9140(78)80019-8)

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Abstract

Aqueous solutions of the metal complexes of ethylenediaminetetra-acetic acid (EDTA) are widely used in analysis; though X-ray diffraction methods cannot be directly used for structural determination in solution, ultraviolet-visible region, vibrational and NMR spectroscopy studies demonstrate that the species in solution adopt a similar range of stereochemistries to those determined for the solid state. Thus a review of the spectroscopic properties of the solutions suggests that chelates are formed in which the denticity of EDTA varies from one to six and the co-ordination number about the metal from four to nine.