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Photoluminescent chain-of-dimer anion in a novel hybrid halometallate (C5H14N2)3{Sb2Br9}2: atypical behavior in one-dimensional anionic systemsстатья Исследовательская статья
- Авторы: Bykov Andrei Viktorovich, Shestimerova Tatiana A., Bykov Mikhail A., Gontcharenko Victoria E., Lyssenko Konstantin A., Metlin Mikhail T., Taydakov Ilya V., Grigorieva Anastasia V., Shevelkov Andrei V.
- Журнал: Dalton Transactions
- Том: 54
- Номер: 4
- Год издания: 2025
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 1541
- Последняя страница: 1551
- DOI: 10.1039/d4dt02751e
- Аннотация: In pursuit of identifying less toxic hybrid compounds suitable for optoelectronic applications, we synthesized a novel homopiperazinium bromoantimonate(III), (C5H14N2)3{Sb2Br9}2. It readily crystallized from an aqueous hydrobromic acid solution and was found to be stable both in air and upon heating up to 175 В°C. The crystal structure of the new bromoantimonate(III) consisted of {Sb2Br9}3- zigzag chains, which were composed of strongly trigonally distorted SbBr63- octahedral anions and C5H14N22+ dications. Weak interactions{,} including N-H***Br hydrogen bonds and Br***Br van der Waals contacts, facilitated the assembly of the structural moieties into a three-dimensional (3D) supramolecular framework. The photoluminescence (PL) spectrum of (C5H14N2)3{Sb2Br9}2 displayed two broad bands in visible and near-infrared regions, which were scarcely detectable at room temperature but gained intensity upon cooling. Red emission at 645 nm, typically observed in zero-dimensional halometallates, was attributed to antimony 5s2 lone-pair-driven luminescence that corresponded to the emission from the self-trapped exciton (STE) state. The title compound also exhibited an atypical PL band at 880 nm, which has been discussed along with the optical properties and Raman spectrum of (C5H14N2)3{Sb2Br9}2.
- Добавил в систему: Шестимерова Татьяна Алексеевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | d4dt02751e_1.pdf | 1,9 МБ | 13 февраля 2025 [shevelkov] | |
| 2. | экспертиза.pdf | экспертиза.pdf | 1,9 МБ | 13 февраля 2025 [shevelkov] |