The First Heterometallic Acetate-Bridged Pt(II)–Pd(II) Complex: Synthesis, Structure, and Formation of Bimetallic PtPd2 Nanoparticles
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Russian Journal of Coordination Chemistry
ISSN: 1070-3284
, E-ISSN: 1608-3318
|
| Вых. Данные |
Год: 2019,
Том: 45,
Номер: 4,
Страницы: 253-265
Страниц
: 13
DOI:
10.1134/s107032841904002x
|
| Ключевые слова |
platinum, palladium, acetate complexes, synthesis, X-ray diffraction, crystal chemistry, quantum chemical analysis, nanoparticles |
| Авторы |
Cherkashina N.V.
1
,
Churakov A.V.
1
,
Yakushev I.A.
1
,
Stolyarov I.P.
1
,
Khrustalev V.N.
2
,
Khramov E.V.
2,3
,
Markov A.A.
1
,
Smirnova N.S.
1
,
Zubavichus Ya.V.
3
,
Dorovatovskii P.V.
3
,
Dobrokhotova Zh.V.
1
,
Ilyukhin A.B.
1
,
Vargaftik M.N.
1
|
| Организации |
| 1 |
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
|
| 2 |
Peoples’ Friendship University of Russia
|
| 3 |
National Research Center Kurchatov Institute
|
|
The reaction of platinum acetate blue, empirically described as Pt(OOCMe)2.50, with palladium(II) acetate
Pd3(μ-OOCMe)6 gave the first heterometallic acetate-bridged platinum(II) and palladium(II) complex
Pd2Pt(μ-OOCMe)6 (I) as co-crystallizates 17Pd2Pt(μ-OOCMe)6 ⋅ 4Pd3(μ-OOCMe)6 ⋅42C6H6 (IIa) and
17Pd2Pt(μ-OOCMe)6 ⋅ 4 Pd3(μ-OOCMe)6 (IIb). Single crystal X-ray diffraction (CIF files CCDC nos. 1568105 and 1852744), EXAFS, and quantum chemical studies (DFT and QTAIM) of complex I revealed a slightly distorted triangular structure similar to the structure of palladium(II) acetate Pd3(μOOCMe)6 and hypothetical platinum(II) complex Pt3(μ-OOCMe)6. The thermal decomposition of complex IIa gives the bimetallic alloy PtPd2. A combined X-ray diffraction and EXAFS study demonstrated that the obtained material consists of core (Pt)–shell (Pd) particles with an average size of ~28 nm and a minor amount of smaller (~5 nm) PdO nanoparticles on the surface. The obtained results are useful for the understanding of the nature and structure of the supported phase of heterogeneous Pt–Pd catalysts.