Complexation of trivalent lanthanide cations with amino(<i>O</i>-alkyl)methylenephosphonic acids as the closest organophosphorus analogues of nitrilotriacetic acid
The complexation of new complexones, analogues of nitrilotriacetic (H3NTA) and nitrilotrimethylenephosphonic (H6NTP) acids containing monobasic (O-alkyl)methylenephosphonic fragments as donor groups, with trivalent cations of lanthanides was studied. The stability and deprotonation constants of 1:1...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Kazan Federal University
2025-06-01
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| Series: | Учёные записки Казанского университета: Серия Естественные науки |
| Subjects: | |
| Online Access: | https://uzakuesc.elpub.ru/jour/article/view/342 |
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| Summary: | The complexation of new complexones, analogues of nitrilotriacetic (H3NTA) and nitrilotrimethylenephosphonic (H6NTP) acids containing monobasic (O-alkyl)methylenephosphonic fragments as donor groups, with trivalent cations of lanthanides was studied. The stability and deprotonation constants of 1:1 complexes and the fractional distribution of complex forms were determined using pH-metric titration in combination with mathematical modeling. The complexation properties of N-[(O-butyl)hydroxyphosphorylmethyl]iminodiacetic acid were compared with those of H3NTA based on the linear free-energy relationships. |
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| ISSN: | 2542-064X 2500-218X |