1H and 2H NMR Spectroscopic Study of the Ion Pairs Formed upon the Activation of Vanadium(III) α-Diimine pre-Catalyst with AlMe3/[Ph3C][B(C6F5)4] and MAO
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169
|
| Output data |
Year: 2016,
Volume: 423,
Pages: 333-338
Pages count
: 6
DOI:
10.1016/j.molcata.2016.07.027
|
| Tags |
Homogeneous ethylene polymerization, Ion pairs, NMR of the paramagnetic molecules, Post-metallocene, α-diimine vanadium(III) chloride |
| Authors |
Soshnikov Igor E.
1,2
,
Semikolenova Nina V.
1
,
Bryliakov Konstantin P.
1,2
,
Zakharov Vladimir A.
1,2
,
Talsi Evgenii P.
1,2
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090, Novosibirsk, Russian Federation
|
| 2 |
Novosibirsk State University, 630090, Novosibirsk, Russian Federation
|
|
Funding (2)
|
1
|
Russian Foundation for Basic Research
|
16-53-53014
|
|
2
|
Russian Foundation for Basic Research
|
16-03-00236
|
1H and 2H NMR spectroscopic characterization of the V(III) ion-pair intermediates formed upon the activation of α-diimine vanadium(III) chloride L3,5−MeVIIICl3(THF) (L3,5−Me = 1,4-bis-3,5-dimethylphenyl-2,3-dimethyl-1,4-diazabuta-1,3-diene) with AlMe3/[Ph3C][B(C6F5)]4 and MAO is reported. In contrast to previously reported heterobinuclear ion pairs of the type [L1(R)VIII(μ-R)2AlMe2]+[A]− (L1 = bis(imino)pyridine ligand, [A]− = [B(C6F5)4]− or [MeMAO]−, R = Me or Cl), species of the type [L3,5−MeVMe2(THF)2]+[B(C6F5)4]−, [L3,5−MeVMe2(THF)2]+[MeMAO]− and [L3,5−MeVMe2+⟵MeMAO−] were identified.