Complexes of phosphonate and phosphinate derivatives of dipicolylamine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10376997" target="_blank" >RIV/00216208:11310/18:10376997 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1039/c8nj00100f" target="_blank" >https://doi.org/10.1039/c8nj00100f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c8nj00100f" target="_blank" >10.1039/c8nj00100f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Complexes of phosphonate and phosphinate derivatives of dipicolylamine

Popis výsledku v původním jazyce

Four dipicolylamine (DPA) derivatives bearing methylphosphonic or methylphosphinic acid (P-R; R = H, Me, CH2PO2H2) groups were synthesized. Their acid-base and coordination properties were studied by potentiometry, UV-Vis and NMR measurements. The phosphonate derivative shows increased basicity (log K-1 = 8.39), whereas the phosphinate derivatives show decreased basicity (log K-1 = 6-7) compared to the parent dipicolylamine. Consequently, the stability constants of the phosphonate complexes are 3 to 4 orders of magnitude higher than those of the phosphinate complexes. All ligands show excellent selectivity for Zn(II) over Ca(II) and Mg(II) ions. The structures of several Cu(II) and Ni(II) complexes in the solid state were determined by X-ray diffraction analysis. The complexes mostly show dimeric or polymeric structures and the two metal ions induce a different coordination geometry of the DPA group. The coordination geometry is always (pseudo) octahedral. The DPA fragment is bound in mer geometry in the Cu(II) complexes, whereas the Ni(II) complexes have fac geometry. In conclusion, the phosphonate and phosphinate derivatives of DPA are efficient complexing agents for divalent transition metal ions and the DPA-phosphinate grouping is a suitable fragment for sensing Zn(II) ions.

Název v anglickém jazyce

Complexes of phosphonate and phosphinate derivatives of dipicolylamine

Popis výsledku anglicky

Four dipicolylamine (DPA) derivatives bearing methylphosphonic or methylphosphinic acid (P-R; R = H, Me, CH2PO2H2) groups were synthesized. Their acid-base and coordination properties were studied by potentiometry, UV-Vis and NMR measurements. The phosphonate derivative shows increased basicity (log K-1 = 8.39), whereas the phosphinate derivatives show decreased basicity (log K-1 = 6-7) compared to the parent dipicolylamine. Consequently, the stability constants of the phosphonate complexes are 3 to 4 orders of magnitude higher than those of the phosphinate complexes. All ligands show excellent selectivity for Zn(II) over Ca(II) and Mg(II) ions. The structures of several Cu(II) and Ni(II) complexes in the solid state were determined by X-ray diffraction analysis. The complexes mostly show dimeric or polymeric structures and the two metal ions induce a different coordination geometry of the DPA group. The coordination geometry is always (pseudo) octahedral. The DPA fragment is bound in mer geometry in the Cu(II) complexes, whereas the Ni(II) complexes have fac geometry. In conclusion, the phosphonate and phosphinate derivatives of DPA are efficient complexing agents for divalent transition metal ions and the DPA-phosphinate grouping is a suitable fragment for sensing Zn(II) ions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GA17-13721S" target="_blank" >GA17-13721S: Izotopy mědi a nová teranostika</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

New Journal of Chemistry

ISSN

1144-0546

e-ISSN

—

Svazek periodika

42

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

7713-7722

Kód UT WoS článku

000434245500024

EID výsledku v databázi Scopus

2-s2.0-85047004911