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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Metal ions of (I-IV) B-groups in unstable oxidation states (electron state ) in $\upgamma$-irradiated aqueous solutions at 77°Kстатья
- Авторы: Aleksandrov A.I., Ionova G.V., Ershov B.G.
- Журнал: Radiation Physics and Chemistry
- Том: 13
- Номер: 5-6
- Год издания: 1979
- Издательство: Elsevier
- Местоположение издательства: United States
- Первая страница: 199
- Последняя страница: 207
- DOI: 10.1016/0146-5724(79)90047-5
- Аннотация: The metal ions of (I-IV) B-groups in unusual oxidation states M z+ (electron state 2Sin) havebeen obtained in aqueous solutions under the conditions of low-temperature radiolysis at 77°K. EPRsignals and optical spectra of these particles have been investigated. The constants of hyperfineinteraction have been calculated by the Breit-Rabi equation. It has been established that the density ofunpaired electron being on the metal ion nucleus increases linearly with charge Z increasing in theisoelectmn series of metal ions. With this phenomena the energy of optical transition in maximum ofoptical absorption bands practically decreases linearly. The analysis of obtained data which was formedon the basis of semiempirical Milliken-Volfsberg-Geimgolts's method (MVG), is consistent with thesupposition that paramagnetic centres are the aquacomplexes of metals [M(OH2)6] z÷. The energies MOa* t and t~*, have been calculated for mentioned complexes. It has been shown that the transitiona*t --, t*, is responsible for experimentally observed of optical absorption band [M(OH2)d:*. CovalentcontribtRion increases when the positive charge of central metal ion increases.
- Добавил в систему: Александров Алексей Иванович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | aleksandrov1979.pdf | aleksandrov1979.pdf | 528,1 КБ | 25 апреля 2023 [AlivAleks] |