Wydział Chemii

Oleksandr Ye. Horniichuk

Victor A. Trush

Nataliia S. Kariaka

Svitlana V. Shishkina

Viktoriya V. Dyakonenko

Olga V. Severinovskaya

Paula Gawryszewska

Konstantin V. Domasevitch

Adam Watras

Vladimir M. Amirkhanov

2021

New Journal of Chemistry

45

22361-22368

10.1039/d1nj04353f

Naukowa

Angielski

Artykuł

Coordination compounds of lanthanides NEt₄[NaLn₂L₄(H₂O)], Na[NaLn₂L₄(H₂O)]·2H₂O (Ln = La³⁺, Nd³⁺) with the bis-chelating carbacylamidophosphate ligand tetramethyl N,N′-(2,2,3,3,4,4-hexafluoro-1,5-dioxopentane-1,5-diyl)bis(phosphoramidate) (H₂L) were obtained for the first time via reactions of Na₂L with lanthanide nitrates. The complexes were characterized by IR and NMR spectroscopy and laser desorption/ionization mass spectrometry. From X-ray diffraction analysis, it was established that the complex anions in the obtained compounds have a structure of a quadruple-stranded helicate, which encapsulates a sodium cation and a molecule of water into the negatively charged environment of the ligand fluorine and carbonyl oxygen atoms. Upon excitation by the 266 nm harmonic line of the Nd:YAG pulsed laser, the NEt₄[NaNd₂L₄(H₂O)] complex exhibits IR-emission at 300 and 77 K with the ⁴F_3/2 emission lifetime of 2 μs.

http://dx.doi.org/10.1039/d1nj04353f

https://www.rsc.org/