Ammonium 18-crown-6 complexes with tetrahedral monoanions: X-ray, thermal and comparative analysis of non-covalent interactions

Charkin, D.; Kireev, V.; Krupenikov, N.; Dmitriev, D.; Dorogov, D.; Aksenov, S.; Zagidullin, K.A.; Volkov, M.A.; Novikov, A.P.; Nevolin, I.; Krot, A.; Grigoriev, M.S.; Krivoborodov, E.; Sitanskaia, A.; Tananaev, I.G.

Авторы: Charkin Dmitry, Kireev Vadim, Krupenikov Nikita, Dmitriev Dmitry, Dorogov Dmitry, Aksenov Sergey, Zagidullin Karim A., Volkov Mikhail A., Novikov Anton P., Nevolin Iurii, Krot Anna, Grigoriev Mikhail S., Krivoborodov Efrem, Sitanskaia Anastasiia, Tananaev Ivan G.
Журнал: CrystEngComm
Том: 27
Номер: 16
Год издания: 2025
Издательство: Royal Society of Chemistry
Местоположение издательства: United Kingdom
Первая страница: 2510
Последняя страница: 2522
DOI: 10.1039/d4ce01254b
Аннотация: We report preparation, crystal structures, and non-covalent interaction analysis for a series of ammonium – 18-crown-6 complex salts with tetrahedral monoanions, [(NH4)(18C6)]+[TX4]–nH2O, TX4- = BF4- (n = 0), TcO4- (n = 1), ReO4-, OsO3N-, CrO3F-, CrO3Cl-, and CrO3Br-. In accordance with the size of the anion, the structures can be divided into several groups: “pseudo-dimeric anhydrous” {[NH4(18C6)]2(TX4)}+[TX4]– for the tetrafluoroborate, monofluorochromate, as well as the previously reported perchlorate; “monomeric hydrate” for pertechnetate and nitridoosmate, and “monomeric anhydrous” for the perrhenate and the remaining monohalochromates. Thermal analysis was performed for compounds with different anion natures. The dependence of the complexes' thermal destruction temperature on the anion's oxidizing ability was shown. IR and MALDI analysis was performed for some complexes. The influence of crown ether on the processes of solubility and extraction of pertechnetate anion in systems with organic solvents is shown.
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Ammonium 18-crown-6 complexes with tetrahedral monoanions: X-ray, thermal and comparative analysis of non-covalent interactionsстатья

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