Non-symmetrical bis(aminoalkyl)phosphinates: new ligands with enhanced binding of Cu(ii) ions. (3rd April 2018)

• Record Type: Journal Article
• Authors: Piasta, Karolina; Dziełak, Anna; Mucha, Artur; Gumienna-Kontecka, Elżbieta
• Is Part Of: New journal of chemistry. Volume 42:Number 10(2018)
• Page Start: 7737
• Page End: 7745
• Publication Date: 2018-04-03
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c8nj01094c
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Novel, non-symmetrical bis(aminoalkyl)phosphinic acids exhibit enhanced efficiency in Cu(ii ) ion binding. Abstract : Three novel, non-symmetrical bis(aminoalkyl)phosphinic acids, L 1 –L 3, 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 L 1 –L 3 ligands are efficient chelating agents for Cu(ii ) ions; their metal binding abilities were compared to structurally related compounds described earlier in the literature.