NMR and EPR Spectroscopic Identification of Intermediates Formed upon Activation of 8-Mesitylimino-5,6,7-trihydroquinolylnickel Dichloride with AlR2Cl (R = Me, Et) Full article
| Journal |
Organometallics
ISSN: 0276-7333 , E-ISSN: 1520-6041 |
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| Output data | Year: 2015, Volume: 34, Number: 13, Pages: 3222-3227 Pages count : 5 DOI: 10.1021/acs.organomet.5b00263 | ||||||
| Tags | Chemical activation; Electron spin resonance spectroscopy; Ethylene; Ions; Nickel | ||||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Federal Agency for Scientific Organizations | V.44.2.1. |
| 2 | Russian Foundation for Basic Research | 14-03-91153 |
| 3 | National Natural Science Foundation of China | 21211120163 |
Abstract:
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.
Cite:
Soshnikov I.E.
, Semikolenova N.V.
, Bryliakov K.P.
, Zakharov V.A.
, Sun W-H.
, Talzi E.P.
NMR and EPR Spectroscopic Identification of Intermediates Formed upon Activation of 8-Mesitylimino-5,6,7-trihydroquinolylnickel Dichloride with AlR2Cl (R = Me, Et)
Organometallics. 2015. V.34. N13. P.3222-3227. DOI: 10.1021/acs.organomet.5b00263 WOS Scopus РИНЦ ANCAN OpenAlex
NMR and EPR Spectroscopic Identification of Intermediates Formed upon Activation of 8-Mesitylimino-5,6,7-trihydroquinolylnickel Dichloride with AlR2Cl (R = Me, Et)
Organometallics. 2015. V.34. N13. P.3222-3227. DOI: 10.1021/acs.organomet.5b00263 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Mar 27, 2015 |
| Published online: | Jun 25, 2015 |
| Published print: | Jul 13, 2015 |
Identifiers:
| Web of science: | WOS:000358026500017 |
| Scopus: | 2-s2.0-84953885781 |
| Elibrary: | 26945474 |
| Chemical Abstracts: | 2015:1067592 |
| Chemical Abstracts (print): | 163:161395 |
| OpenAlex: | W2340761940 |