High Throughput Study of Ionic Liquids in Controlled Environments with FTIR Spectroscopic Imaging
Full article
| Common |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Molecular Liquids
ISSN: 0167-7322
, E-ISSN: 1873-3166
|
| Output data |
Year: 2021,
Volume: 337,
Article number
: 116412,
Pages count
: 8
DOI:
10.1016/j.molliq.2021.116412
|
| Tags |
Ionic liquids, high throughput, ATR-FTIR imaging, FT-IR spectroscopy, water sorption, toluene
sorption, interactions |
| Authors |
Chan K.L.Andrew
1,2
,
Shalygin Anton S.
3
,
Martyanov Oleg N.
3
,
Welton Tom
4
,
Kazarian Sergei.G.
1
|
| Affiliations |
| 1 |
Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
|
| 2 |
Institute of Pharmaceutical Science, King’s College London, SE1 9NH, United Kingdom
|
| 3 |
Boreskov Institute of Catalysis SB RAS, Novosibirsk, 630090, Russia
|
| 4 |
Department of Chemistry, Imperial College London, White City Campus, 80 Wood Lane, London W12 0BZ, United Kingdom
|
|
Funding (1)
|
1
|
Ministry of Science and Higher Education of the Russian Federation
|
075-15-2019-1876
|
The nature of Ni(I) species formed upon the activation of the N,N-α-diimine Ni(II) ethylene polymerization precatalyst LNiIIBr2 (1) with AlMe3 and MMAO has been studied in detail by 1H, 2H NMR, and electron paramagnetic resonance (EPR) spectroscopy (L = 1,4-bis(2,6-diisopropylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene). It has been shown that neutral paramagnetic NMR and EPR active heterobinuclear complexes of types LNiI(μ-Me)(μ-Br)AlR2 and
LNiI(μ-Me)2AlR2 (R = Me in the case of AlMe3 and R = Me or iBu in the case of MMAO) predominate in toluene solutions of 1/AlMe3 and 1/MMAO at room temperature. The effect of the cocatalyst/catalyst ratio on the relative concentrations of LNiI(μ-Me)(μ-Br)AlR2 and LNiI(μ-Me)2AlR2 has been studied and their role in ethylene polymerization is discussed.