The acid-base properties and the complexation of tributyl [aminotris(methylenephosphonic acid)] in aqueous solution

GRAPHICAL ABSTRACT

ABSTRACT

The acid-base and complexing properties of tributyl [aminotris(methylenephosphonic acid)] (H₃L) with divalent metals were investigated in aqueous solution via the potentiometric titration method. The formation of 1:1 species partially protonated [MH₂L] and totally deprotonated [ML⁻] as well as hydroxo species [M(OH)L²⁻] has been established.

KEYWORDS:

• Acid-base properties
• aminophosphonates
• stability constants
• complexation

Funding

This work was funded by the subsidy allocated to Kazan Federal University for the project part of the state assignment in the sphere of scientific activities.