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Lanthanide complexes based on a new bis-chelating carbacylamidophosphate (CAPh) scorpionate-like ligand.
Autorzy
Rok wydania
2020
Czasopismo
Numer woluminu
10
Strony
24808-24816
DOI
10.1039/d0ra04714g
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Streszczenie
The novel bis-chelating carbacylamidophosphate type ligand, tetramethyl[pyridine-2,6-diyldi(iminocarbonyl)]diamidophosphate (H2L), and its sodium salt, NaHL, have been synthesized and their structural properties have been investigated. Coordination compounds of lanthanides [Ln(HL)2NO3]·i-PrOH (Ln = Eu3+, Tb3+) were obtained for the first time, isolated in the individual state and characterized by means of IR and NMR spectroscopies, electrospray ionization mass spectrometry (ESI-MS), potentiometric titration, and elemental, thermal gravimetric and X-ray diffraction analyses. It was shown that H2L behaves like a scorpionate type ligand and in a mono-deprotonated form coordinates in a tridentate manner via the oxygen atoms of phosphoryl and carbonyl groups with formation of a mononuclear metal complex. The protonation constants of H2L and stability constants of Eu3+ and Tb3+ complexes have been determined. According to the results of X-ray diffraction analysis the H2L and [Ln(HL)2NO3]·i-PrOH molecules have monomeric structure but NaHL is a dimer. The Hirshfeld surface and fingerprint plots of the compounds have been used to analyze various hydrogen bonds and intermolecular interactions displayed in the crystal structure.
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Pełny tekst licencji: https://creativecommons.org/licenses/by-nc/4.0/legalcode
Adres publiczny
http://dx.doi.org/10.1039/d0ra04714g
Strona internetowa wydawcy
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