Chelating properties of lactate anion. perturbing effect of additional ligands on bis(DL-lactato)-metal(II) complexes

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Abstract

Dilactate complexes of copper(II), nickel(II), cobalt(II), zinc(II) and their adducts with bases have been considered. Tetragonal structure of the complexes and chelating behavior of the lactate anion, coordinated through one oxygen of the carboxylate group and the oxygen of the hydroxo group, is suggested. The strength of the metal-lactate bond greatly depends on the presence of the base molecule axial with respect to the plane of the lactate anion.

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Cited by (6)

  • Distinct decalcification process of dentin by different cariogenic organic acids: Kinetics, ultrastructure and mechanical properties

    2016, Archives of Oral Biology
    Citation Excerpt :

    In the second stage, the acid anions will either stay attached to the biomineral surfaces with only limited dissolution, or the calcium–anion complex will detach and initiate substantial decalcification, depending upon the diffusion rate of the calcium–anion complexes into solution. Lactate is a known chelating agent (Cariati, Morazzoni, Zanderighi, Marcotrigiano, & Pellacani, 1977; Lu et al., 1992) comparable to citric acid, and is often used in chelation therapy clinically. It is likely that lactic anions chelate on the residual nanocrystallites in dentin matrix, resulting in further demineralization.

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