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Gagieva SC, Magomedov KF, Tuskaev VA, Bogdanov VS, Kurmaev DA, Golubev EK, Denisov GL, Nikiforova GG, Evseeva MD, Saracheno D, Buzin MI, Dzhevakov PB, Privalov VI, Bulychev BM. Effect of Activator and Outgoing Ligand Nature on the Catalytic Behavior of Bis(phenoxy-imine) Ti(IV) Complexes in the Polymerization of Ethylene and Its Copolymerization with Higher Olefins. Polymers (Basel) 2022; 14:polym14204397. [PMID: 36297979 PMCID: PMC9609217 DOI: 10.3390/polym14204397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/25/2022] Open
Abstract
A series of bis(phenoxy-imine) (FI) titanium(IV) and zirconium(IV) complexes have been synthesized. The effect of the nature of the activator (MAO, combinations EtnAlCl3-n + Bu2Mg and iBu3Al + [Ph3C]+[B(C6F5)4]−) on the catalytic activity and properties of the resulting polymers was studied. It was found that Ti-Fi complexes, despite the nature of the outgoing ligands (Cl or iPrO) in the presence of Al/Mg activators, effectively catalyze the polymerization of ethylene (with the formation of UHMWPE); copolymerization of ethylene with 1-octene (with the formation of ultra-high molecular weight copolymers); and the ternary copolymerization of ethylene, propylene and 5-vinyl-2-norbornene (with the formation of polyolefin elastomers). It has been shown that Zr-FI complexes are not activated by these Al/Mg compositions. The resulting UHMWPE can be processed by a solventless method into high-strength and high-modulus oriented films; however, their mechanical characteristics do not exceed those obtained using MAO.
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Affiliation(s)
- Svetlana Ch. Gagieva
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
- Correspondence:
| | - Kasim F. Magomedov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
| | - Vladislav A. Tuskaev
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
| | - Vyacheslav S. Bogdanov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
| | - Dmitrii A. Kurmaev
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
| | - Evgenii K. Golubev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
- Enikolopov Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Profsoyuznaya Str., 70, 117393 Moscow, Russia
| | - Gleb L. Denisov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
| | - Galina G. Nikiforova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
| | - Maria D. Evseeva
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
| | - Daniele Saracheno
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
| | - Mikhail I. Buzin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991 Moscow, Russia
| | - Pavel B. Dzhevakov
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
| | - Viktor I. Privalov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31, Leninsky Prospect, 119991 Moscow, Russia
| | - Boris M. Bulychev
- Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119992 Moscow, Russia
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Sharma S, Kumar P, Jain A, Saxena S. Synergy Between DFT Calculations and Experimental Studies on the Optimized Structures and the Antibacterial Potential of Some Novel Tetra‐ and Penta Coordinated Organic‐ Inorganic Hybrid Complexes of Titanium(IV). Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4321] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shobhana Sharma
- S.S. Jain Subodh (autonomous) P.G. College, Rambagh, Jaipur‐302004 India
| | - Pradeep Kumar
- Department of Chemistry, MNIT, JLN Marg, Jaipur‐302017 India
| | - Asha Jain
- Department of Chemistry University of Rajasthan Jaipur ‐302004 India
| | - Sanjiv Saxena
- Department of Chemistry University of Rajasthan Jaipur ‐302004 India
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Donzelli A, Metushi I, Potvin PG. Titanium(IV) complexes of disulfide-linked Schiff bases. Inorg Chem 2012; 51:5138-45. [PMID: 22515278 DOI: 10.1021/ic202709x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
With the goal of preparing Ti(IV) complexes bearing a sulfur-based redox function of possible use in electrocatalytic oxidations of alcohols at electrode surfaces, a series of seven 2,2'-dithiodianiline Schiff-base derivatives, including two new variations, were tested in reactions with Ti(OR)(4) (R = (i)Pr, (t)Bu). Instead of the expected dimetallic products of general formula [LTi(OR)(2)](2), mononuclear species LTi(OR)(2) were obtained, confirmed by crystallographic determinations to have an unprecedented, symmetrical, and macrocyclic arrangement with four-point binding to the metal center and with the disulfide moieties remaining uncoordinated. Cyclic voltammetry performed in CH(2)Cl(2) displayed oxidations at potentials useful for fuel cells (+1.1-1.5 V vs Ag/AgCl), but despite the uncoordinated disulfide moieties, the complexes were reticent to engage in reduction processes.
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Affiliation(s)
- Alberto Donzelli
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3
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Dhayal V, Chaudhary A, Choudhary BL, Nagar M, Bohra R, Mobin SM, Mathur P. Molecular precursors for the preparation of homogenous zirconia–silica materials by hydrolytic sol–gel process in organic media. Crystal structures of [Zr{OSi(OtBu)3}4(H2O)2]·2H2O and [Ti(OtBu){OSi(OtBu)3}3]. Dalton Trans 2012; 41:9439-50. [DOI: 10.1039/c2dt12127a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chaudhary A, Dhayal V, Nagar M, Bohra R, Mobin SM, Mathur P. Chemically modified oximato complexes of titanium(IV) isopropoxide as new precursors for the sol–gel preparation of nano-sized titania: Crystal and molecular structure of [Ti{ONC10H16}4·2CH2Cl2]. Polyhedron 2011. [DOI: 10.1016/j.poly.2010.12.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sharma S, Jain A, Saxena S. Incorporation of Titanium(IV) into Sterically Hindered Schiff Bases of Heterocyclic β -Diketones Involving Ketooximes and Glycol as Coligands: Preparation and Structural Considerations. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500802176598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sharma N, Sharma V, Nagar M, Bohra R, Kaushik A, Mathur S, Barth S. Glycol modified cis -diisopropoxy- bis ( N -phenylsalicylideneiminato)zirconium(IV): syntheses, characterization and low temperature transformation to nanocrystalline zirconia. J COORD CHEM 2008. [DOI: 10.1080/00958970801902483] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Namita Sharma
- a Department of Chemistry , University of Rajasthan , Jaipur, India 302004
| | - Vinita Sharma
- a Department of Chemistry , University of Rajasthan , Jaipur, India 302004
| | - Meena Nagar
- a Department of Chemistry , University of Rajasthan , Jaipur, India 302004
| | - Rakesh Bohra
- a Department of Chemistry , University of Rajasthan , Jaipur, India 302004
| | - Ajay Kaushik
- b Department of Chemistry , MLV Textile and Engineering College , Bhilwara
| | - Sanjay Mathur
- c Leibniz-Institut für Neue Materialien gGmbH , Im Stadtwald, Gebäude D2 2, 66123, Saarbrücken
| | - Sven Barth
- c Leibniz-Institut für Neue Materialien gGmbH , Im Stadtwald, Gebäude D2 2, 66123, Saarbrücken
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Buitrago O, Mosquera MEG, Jiménez G, Cuenca T. Organotitanoxanes with Unique Structure among Transition-Element Organometallic Oxide Derivatives. Inorg Chem 2008; 47:3940-2. [DOI: 10.1021/ic8003646] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olga Buitrago
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Marta E. G. Mosquera
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Gerardo Jiménez
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Tomás Cuenca
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
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