Synthesis and Structure of Ta4S9Br8. An Emergent Family of Early Transition Metal Chalcogenide Clusters
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Inorganic Chemistry
ISSN: 0020-1669
, E-ISSN: 1520-510X
|
| Вых. Данные |
Год: 2005,
Том: 44,
Номер: 24,
Страницы: 8756-8761
Страниц
: 6
DOI:
10.1021/ic051014e
|
| Авторы |
Sokolov Maxim N.
1
,
Gushchin Artem L.
1
,
Abramov Pavel A.
1
,
Virovets Alexandr V.
1
,
Peresypkina Eugenia V.
1
,
Kozlova Svetlana G.
1,2
,
Kolesov Boris A.
1
,
Vicent Cristian
3
,
Fedin Vladimir P.
1
|
| Организации |
| 1 |
Nikolaev Institute of Inorganic Chemistry, Russian Academy of Sciences, pr. LavrentyeVa 3, Novosibirsk 630090
|
| 2 |
Boreskov Institute of Catalysis, Russian Academy of Sciences, pr. Lavrentyeva 5, 630090 Novosibirsk, Russia
|
| 3 |
Departament de Ciencies Experimentals, Universitat Jaume I, Castellon, Spain
|
|
Информация о финансировании (3)
|
1
|
Российский фонд фундаментальных исследований
|
05-03-32126
|
|
2
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
2356
|
|
3
|
Haldor Topsoe A/S
|
|
Single crystals of Ta4S9Br8 are obtained by heating Ta, S, and Br2 at 400 °C in a 4.0:9.0:4.0 molar ratio in a 44% yield. The structure was determined by X-ray analysis and consists of molecular clusters [Ta4(μ4-S)(μ-S2)4Br8]. The tantalum atoms form a square with long Ta···Ta distances (3.30 Å), with four S2 ligands bridging the Ta−Ta edges and one capping the square. Each Ta atom has two terminal bromine atoms. The compound is diamagnetic and has only two electrons for metal−metal bonding. IR and Raman spectral studies with the use of 34S allow to identify characteristic vibrations S−S (537 cm-1) and Ta4-μ4-S (407 cm-1). The compound is soluble in CH3CN, giving a dark-red solution with a characteristic electronic spectrum, which was assigned on the base of DFT calculations. ESI-MS spectra of the solutions show formation of {[Ta4S9Br8]Br}- associates.