NMR and EPR Spectroscopic Identification of Intermediates Formed upon Activation of 8-Mesitylimino-5,6,7-trihydroquinolylnickel Dichloride with AlR2Cl (R = Me, Et)
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Organometallics
ISSN: 0276-7333
, E-ISSN: 1520-6041
|
| Вых. Данные |
Год: 2015,
Том: 34,
Номер: 13,
Страницы: 3222-3227
Страниц
: 5
DOI:
10.1021/acs.organomet.5b00263
|
| Авторы |
Soshnikov Igor E.
1,2
,
Semikolenova Nina V.
1
,
Bryliakov Konstantin P.
1,2
,
Zakharov Vladimir A.
1,2
,
Sun Wen-Hua
3
,
Talzi Evgenii P.
1,2
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russian Federation
|
| 2 |
Novosibirsk State University, Pirogova 2, Novosibirsk 630090, Russian Federation
|
| 3 |
CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
|
|
Информация о финансировании (3)
|
1
|
Федеральное агентство научных организаций России
|
V.44.2.1.
|
|
2
|
Российский фонд фундаментальных исследований
|
14-03-91153
|
|
3
|
National Natural Science Foundation of China
|
21211120163
|
The intermediates formed upon activation of 8-mesitylimino-5,6,7-trihydroquinolylnickel dichloride [LNiCl2] with AlR2Cl (R = Me, Et) have been studied by 1H NMR and EPR spectroscopy. Activation of LNiCl2 with AlEt2Cl has been shown to afford diamagnetic ion pair [LNiIIEt]+[AlEt3Cl]−, whereas the use of AlMe2Cl as activator yields the paramagnetic ion pair with proposed structure [LNiII(μ-R)2AlMeCl]+[AlMe3Cl]− (R = Cl or Me). With time, both ion pairs convert to bis-ligated Ni(I) complexes with proposed structures [L2NiI]+[A]−, where [A]− = AlEt3Cl– or AlMe3Cl–, respectively. Ethylene reactivity examination reveals that ion pairs [LNiIIEt]+[AlEt3Cl]− and [LNiII(μ-R)2AlMeCl]+[AlMe3Cl]− are the closest precursors of the active species of polymerization.