Issue 10, 2018

Non-symmetrical bis(aminoalkyl)phosphinates: new ligands with enhanced binding of Cu(ii) ions

Abstract

Three novel, non-symmetrical bis(aminoalkyl)phosphinic acids, L1–L3, have been synthesized and characterized. Solution studies on the coordination abilities of the ligands have shown that these compounds form various protonated mono- and bis-complexes, where copper(II) coordination is realized through the nitrogen atom(s) of the amino group(s), supported by oxygen(s) from the phosphinate unit(s). Potentiometric titrations and a full spectroscopic analysis clarified the species distribution profiles and detailed coordination modes. The results show that L1–L3 ligands are efficient chelating agents for Cu(II) ions; their metal binding abilities were compared to structurally related compounds described earlier in the literature.

Graphical abstract: Non-symmetrical bis(aminoalkyl)phosphinates: new ligands with enhanced binding of Cu(ii) ions

Supplementary files

Article information

Article type
Paper
Submitted
06 mar. 2018
Accepted
14 mar. 2018
First published
16 mar. 2018

New J. Chem., 2018,42, 7737-7745

Non-symmetrical bis(aminoalkyl)phosphinates: new ligands with enhanced binding of Cu(II) ions

K. Piasta, A. Dziełak, A. Mucha and E. Gumienna-Kontecka, New J. Chem., 2018, 42, 7737 DOI: 10.1039/C8NJ01094C

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