Synthesis, acid-base, and complexing properties of ethylenediaminetetra(O-alkyl)methylene­phosphonic acids – the closest organophosphorus analogs of ethylenediaminetetraacetic acid

Synthesis, acid-base, and complexing properties of ethylenediaminetetra(O-alkyl)methylene­phosphonic acids – the closest organophosphorus analogs of ethylenediaminetetraacetic acid