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Hydrated and fluorinated potassium scandium phosphates: topology symmetry analysis and structure predictionстатья
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: 11 декабря 2024 г.
- Авторы: Topnikova A.P., Belokoneva E.L., Dimitrova O.V., Volkov A.S., Stefanovich S.Yu, Maltsev V.V., Zorina L.V.
- Журнал: New Journal of Chemistry
- Том: 48
- Год издания: 2024
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 20375
- Последняя страница: 20383
- DOI: 10.1039/d4nj04229h
- Аннотация: акт экспертизы № 317, ноябрь 2024Two centrosymmetric modifications of hydrated phosphates KSc(HPO4)2 (Pnam and P121/c1) and two polar modifications of fluorinated phosphates K3Sc3(P3O10F2)F5 (Cmc21 and I1a1) were synthesized hydrothermally at temperature 280-290°C and pressure 80-100 atm. Phosphates KSc(HPO4)2 demonstrates phase transition from unknown orthorhombic at room temperature to known monoclinic at low temperature isostructural to several Sc-phosphates with Rb, Cs, NH4. Orthorhombic K3Sc3(P3O10F2)F5 is isostructural to K3Fe3(P3O10F2)F5, monoclinic - repeats recently investigated compound. Detailed topology symmetry analysis of OD-theory carried out for polar fluorinated Sc-phosphates allowed separating common layer with a local trigonal symmetry P31m. Close polytypic relations are described and series of hypothetical structures in the unit family are predicted. Under Nd:YAG laser illumination powders of acentric fluorophosphates demonstrate second harmonic light emission (SHG). Determination of optical nonlinearity was fulfilled for orthorhombic and monoclinic fluorine-phosphate modifications using SHG from extremely dispersed powders with grains 3-5 mcm. The second harmonic output 2.5 and 1.2 compared to α-quartz powder under the same conditions correspond to space-averaged nonlinear optical coefficients <d>=0.55 и 0.38 pm/V for these two acentric modifications, respectively.
- Добавил в систему: Белоконева Елена Леонидовна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 9208_NJC_authorreprints.pdf | 2,7 МБ | 9 декабря 2024 [BelokonevaEL] | |
| 2. | акт_экс.pdf | акт_экс.pdf | 246,8 КБ | 19 февраля 2025 [BelokonevaEL] |