Synthesis, acid-base and complexing properties of N,N,N′,N′-tetrakis(O-butylhydroxyphosphorylmethyl)-1,2-diaminoethane

© 2017, Pleiades Publishing, Ltd. A method of synthesis of organophosphorus analog of ethylenediaminetetraacetic acid (a common complexon), N,N,N′,N′-tetrakis(O-butylhydroxyphosphorylmethyl)-1,2-diaminoethane, has been elaborated. The product structure has been elucidated by means of NMR spectroscopy and X-ray diffraction analysis. Constants of the acid dissociation and the stability of the 1 : 1 complexes with Co(II), Ni(II), and Cu(II) ions have been determined