Ionic homometallic and heterometallic Titanium/Transition and Non-Transition metals complexes stabilized with crown ether in the polymerization of ethylene

Ionic homometallic and heterometallic Titanium/Transition and Non-Transition metals complexes stabilized with crown ether in the polymerization of ethylene Full article

Journal

European Polymer Journal
ISSN: 0014-3057 , E-ISSN: 1873-1945

Output data

Year: 2024, Volume: 205, Article number : 112720, Pages count : DOI: 10.1016/j.eurpolymj.2023.112720

Authors

Gagieva Svetlana Ch. ^1,2 , Tuskaev Vladislav A. ^1,2 , Magomedov Kasim F. ² , Khrustalev Viktor N. ^3,4 , Evseeva Maria D. ² , Ezernitskaya Marina G. ¹ , Aksenova Svetlana A. ^1,3 , Buzin Mikhail I. ¹ , Antoshkina Evgenia P. ^1,5 , Saracheno Daniele ¹ , Golubev Evgenii K. ^1,6 , Bulychev Boris M. ²

Affiliations

1	A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova St. 28, 119991 Moscow, Russian Federation
2	Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russian Federation
3	Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklay St. 6, Moscow, 117198, Russian Federation
4	Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russian Federation
5	The Moscow Institute of Physics and Technology, Institutskiy per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation
6	Enikolopov Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya Str., 70, 117393 Moscow, Russian Federation

New ionic complexes with various metals (Mg2+, titanium in various oxidation states, and iron triad metals) in the 15-crown-5 cavity as a cation and a titanium-containing anion have been synthesized. The structure of some synthesized complexes was determined by X-ray diffraction analysis. These compounds, in the presence of the Al/Mg activator {Et2AlCl + Bu2Mg}, catalyze the polymerization of ethylene with the formation of ultrahigh molecular weight polyethylene (UHMWPE) with molecular weights up to 2.56·106 Da. Only complexes with a titanium-containing anion showed catalytic activity; its maximum value −4651 kg of PE/mol·h·atm was exhibited by the complex [15C5 ⊃ FeIIICl·2CH3CN]2+[Ti2Cl10]2-. The resulting ultra-high molecular weight polyethylene (Mv to 2.56•106 Da) can be processed by a solventless method into high-strength (up to 2.45 GPa) and high-modulus (up to 144 GPa) oriented tapes. Most polyethylene samples have a linear structure, with the exception of polymers obtained on Ni/Ti complexes, which have 2–3 branches per 1000 carbon atoms.

Gagieva S.C. , Tuskaev V.A. , Magomedov K.F. , Khrustalev V.N. , Evseeva M.D. , Ezernitskaya M.G. , Aksenova S.A. , Buzin M.I. , Antoshkina E.P. , Saracheno D. , Golubev E.K. , Bulychev B.M.
Ionic homometallic and heterometallic Titanium/Transition and Non-Transition metals complexes stabilized with crown ether in the polymerization of ethylene
European Polymer Journal. 2024. V.205. 112720 . DOI: 10.1016/j.eurpolymj.2023.112720 WOS Scopus OpenAlex

Web of science:	WOS:001151972500001
Scopus:	2-s2.0-85181828152
OpenAlex:	W4390414479

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