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Synthesis, and structural and photophysical studies of mono- and dinuclear alkali metal 2,6-dibenzhydryl-4-methylphenolatesстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 апреля 2026 г.
- Авторы: Bardonov Daniil A., Nasyrova Darina I., Metlin Mikhail T., Minyaev Mikhail E., Taydakov Ilya V., Roitershtein Dmitrii M.
- Журнал: New Journal of Chemistry
- Том: 50
- Номер: 3
- Год издания: 2026
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 1261
- Последняя страница: 1272
- DOI: 10.1039/d5nj03734d
- Аннотация: A series of dinuclear alkali metal 2,6-dibenzhydryl-4-methylphenolates [Ar*OM(THF)]2 (Ar* = 2,6-(Ph2CH)2-4-MeC6H2-; M1, M = Li, Na, K) were isolated from the reaction of metal bis(trimethylsilyl)amides with Ar*OHphenol in the THF medium. Recrystallization of M1 from pyridine yields [Ar*OM(py)]2 (M2). In addition to thearyloxide oxygens and solvent donor atoms, the metal cations in both M1 and M2 interact with the phenylrings of the ligands. The hapticity of these interactions gradually changes from Z2 (Li+) to Z6 (K+). Treatmentof Li1 with 1,4,7-trimethyl-1,4,7-triazacyclononane (Me3tacn); Na1 with 12-crown-4 and 18-crown-6;and K1 with 18-crown-6 affords mononuclear complexes [Ar*OLi(Me3tacn)] (Li3), [Na(12-crown-4)2][OAr*] (Na4), [Ar*ONa(18-crown-6)] (Na6) and [Ar*OK(18-crown-6)] (K6), respectively. Ionic pairs[Na(12-crown-4)2][H(OAr*)2] (Na5) and [K(18-crown-6)(THF)2][H(OAr*)2] are formed upon interactionof Na4 and K6 with Ar*OH. The studied phenolates exhibit broadband luminescence spanning 370–800 nm, arising from the competition between p*–p transitions and emission from charge transferstates. In the solid state, mononuclear complexes display longer lifetimes due to suppression of nonradiativerelaxation. This effect along with noticeable bathochromic shifts of the emission maxima maybe attributed to formation of strong short hydrogen bonds.
- Добавил в систему: Ройтерштейн Дмитрий Михайлович