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Inne
Copper(II) complexes of the imidazolinone herbicide imazapyr.
Autorzy
Rok wydania
1996
Czasopismo
Journal of Agricultural and Food Chemistry
Numer woluminu
44
Strony
3698-3702
DOI
10.1021/jf9507856
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The copper(II) complexes formed by the imidazolinone herbicide imazapyr [(±)-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid] were studied in aqueous solution by potentiometric and spectroscopic techniques. Imazapyr acts as a chelating molecule and is effective over a wide pH range. The chelating set active in acidic media involves rather weak donors, namely the pyridine and imidazole nitrogens. In neutral media, the lactam site of the imidazolinone ring deprotonates and the ligand takes advantage of a rather basic nitrogen atom, which, assisted by the pyridine donor, yields stable complexes with five-coordination at the metal ion.
Słowa kluczowe
Imazapyr, 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid, copper(II) complexes
Adres publiczny
https://doi.org/10.1021/jf9507856
Strona internetowa wydawcy
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