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Suo H, Faisca Phillips AM, Satrudhar M, Martins LMDRS, G. da Silva MDF, Pombeiro AJL, Han M, Sun W. Achieving ultra‐high molecular weight polyethylenes by vanadium aroylhydrazine‐arylolates. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hongyi Suo
- College of Chemistry and Chemical Engineering, Yantai University Yantai China
| | - Ana Maria Faisca Phillips
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
| | - Manas Satrudhar
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
- Faculdade de Engenharia, Universidade Lusófona de Humanidades e Tecnologias Lisbon Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
| | - Maria de Fátima G. da Silva
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
- Рeoples' Friendship University of Russia (RUDN University), Research Institute of Chemistry Moscow Russian Federation
| | - Mingyang Han
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences Beijing China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences Beijing China
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Mononuclear Oxidovanadium(IV) Complexes with BIAN Ligands: Synthesis and Catalytic Activity in the Oxidation of Hydrocarbons and Alcohols with Peroxides. Catalysts 2022. [DOI: 10.3390/catal12101168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Reactions of VCl3 with 1,2-Bis[(4-methylphenyl)imino]acenaphthene (4-Me-C6H4-bian) or 1,2-Bis[(2-methylphenyl)imino]acenaphthene (2-Me-C6H4-bian) in air lead to the formation of [VOCl2(R-bian)(H2O)] (R = 4-Me-C6H4 (1), 2-Me-C6H4 (2)). Thes complexes were characterized by IR and EPR spectroscopy as well as elemental analysis. Complexes 1 and 2 have high catalytic activity in the oxidation of hydrocarbons with hydrogen peroxide and alcohols with tert-butyl hydroperoxide in acetonitrile at 50 °С. The product yields are up to 40% for cyclohexane. Of particular importance is the addition of 2-pyrazinecarboxylic acid (PCA) as a co-catalyst. Oxidation proceeds mainly with the participation of free hydroxyl radicals, as evidenced by taking into account the regio- and bond-selectivity in the oxidation of n-heptane and methylcyclohexane, as well as the dependence of the reaction rate on the initial concentration of cyclohexane.
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Wu R, Niu Z, Huang L, Yang Y, Xia Z, Fan W, Dai Q, Cui L, He J, Bai C. Thermally stable vanadium complexes supported by the iminophenyl oxazolinylphenylamine ligands: synthesis, characterization and application for ethylene (co-)polymerization. Dalton Trans 2021; 50:16067-16075. [PMID: 34633403 DOI: 10.1039/d1dt03004c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In this work, a series of oxovanadium complexes bearing the ligands (S,E)-(+)-2, 6-dialkyl-N-(2-((2-(4-isopropyl-4,5-dihydrooxazole-2-yl)phenyl)amino)benzylidene)aniline (dialkyl = dimethyl (V1), diethyl (V2), and isopropyl (V3)) have been synthesized and characterized by FTIR spectroscopy and elemental analysis. Moreover, the molecular structures of complexes V2 and V3 were defined by X-ray diffraction. On activation with ethylaluminium sesquichloride (Al2Et3Cl3), these complexes exhibited high activity towards ethylene polymerization (up to 1.39 × 107 g molv-1 h-1) and showed excellent thermal stability (up to 60 °C). The obtained polyethylene had a moderate molecular weight (21.9 × 104 to 66.4 × 104 g mol-1) and exhibited narrow distribution (1.91 to 2.86) and unimodal features. The effect of the substituents on the ligands was also investigated in detail. The compound bearing the diisopropyl group showed the highest activity toward ethylene polymerization as the bimolecular deactivation of the catalyst can be effectively inhibited by the steric hindrance of the ortho-substituent on aniline. The complex V2 with moderate steric hindrance was also evaluated as a catalyst for the copolymerization of ethylene with norbornene and showed moderate to high activity.
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Affiliation(s)
- Ruiyao Wu
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Zhen Niu
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Lingyun Huang
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Yinxin Yang
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Zhu Xia
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, 230026, Hefei, Anhui, China
| | - Weifeng Fan
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Quanquan Dai
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Long Cui
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Jianyun He
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Chenxi Bai
- Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. .,University of Science and Technology of China, 230026, Hefei, Anhui, China
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Oxygen atom transfer catalysis by dioxidomolybdenum(VI) complexes of pyridyl aminophenolate ligands. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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5
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Ethylene homo- and copolymerization catalyzed by vanadium, zirconium, and titanium complexes having potentially tridentate Schiff base ligands. J Catal 2021. [DOI: 10.1016/j.jcat.2021.05.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Groch P, Bihun-Kisiel A, Piontek A, Ochędzan-Siodłak W. Structural and Thermal Properties of Ethylene-Norbornene Copolymers Obtained Using Vanadium Homogeneous and SIL Catalysts. Polymers (Basel) 2020; 12:polym12112433. [PMID: 33105638 PMCID: PMC7690451 DOI: 10.3390/polym12112433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 11/23/2022] Open
Abstract
The series of ethylene-norbornene (E-NB) copolymers was obtained using different vanadium homogeneous and supported ionic liquid (SIL) catalyst systems. The 13C and 1H NMR (carbon and proton nuclear magnetic resonance spectroscopy) together with differential scanning calorimetry (DSC) were applied to determine the composition of copolymers such as comonomer incorporation (CNB), monomer dispersity (MD), monomer reactivity ratio (re), sequence length of ethylene (le) and tetrad microblock distributions. The relation between the type of catalyst, reaction conditions and on the other hand, the copolymer microstructure, chain termination reaction analyzed by the type of unsaturation are discussed. In addition, the thermal properties of E-NB copolymers such as the melting and crystallization behavior, like also the heterogeneity of composition described by successive the self-nucleation and annealing (SSA) and the dispersity index (DI) were determined.
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Marszałek-Harych A, Trybuła D, Jędrzkiewicz D, Ejfler J. Scrabbling around in Synthetic Nuances Managing Sodium Compounds: Bisphenol/Bisnaphthol Synthesis by Hydroxyl Group Masking. Inorg Chem 2020; 59:6895-6904. [PMID: 32353236 PMCID: PMC7467675 DOI: 10.1021/acs.inorgchem.0c00310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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A unique
method of bisphenol/bisnaphthol synthesis is being proposed,
serendipitously discovered in the course of the careful analysis of
an aminophenol methylation reaction. The insightful exploration of
the synthesis of N- or O-methylated species, originating from functionalized
phenols obtained by a conventional strategy, provided the opportunity
to discover an unexpected reaction pathway yielding various bisphenols.
Sodium complexes were found to be crucial intermediates in the synthetic
scenario. Their formation, which is usually an imperceptive step,
was substantial for the productive outcome of functional group protection.
Thorough exploration revealed an essential structural motif of aminophenolate,
necessary for the successful outcome of the reaction, and also enabled
establishing the limitations of the new method. The work demonstrated
that a slight change in the perspective and close inspection of the
synthetic nuances can answer the important question concerning what
a specific target-oriented synthesis strategy is lacking. The protection of the hydroxyl group of aminophenols with
use of MeI—a general and, in many cases, excellent methylation
reagent—was investigated. In-depth understanding of the mechanistic
aspects of methyl protective group incorporation provided a practical
guide for its application in organic synthesis, but it also opened
a new route for the synthesis of an original group of bisphenols.
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Affiliation(s)
| | - Danuta Trybuła
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Dawid Jędrzkiewicz
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Jolanta Ejfler
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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Zanchin G, Gavezzoli A, Bertini F, Ricci G, Leone G. Homo- and Copolymerization of Ethylene with Norbornene Catalyzed by Vanadium(III) Phosphine Complexes. Molecules 2019; 24:molecules24112088. [PMID: 31159332 PMCID: PMC6600629 DOI: 10.3390/molecules24112088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 11/16/2022] Open
Abstract
Herein, we report the homo- and co-polymerization of ethylene (E) with norbornene (NB) catalyzed by vanadium(III) phosphine complexes of the type VCl3(PMenPh3-n)2 [n = 2 (1a), 1 (1b)] and VCl3(PR3)2 [R = phenyl (Ph, 1c), cyclohexyl (Cy, 1d), tert-butyl (tBu, 1e)]. In the presence of Et2AlCl and Cl3CCOOEt (ETA), 1a-1e exhibit good activities for the polymerization of ethylene, affording linear, semicrystalline PEs with a melting temperature of approximately 130 °C. Mainly alternating copolymers with high comonomer incorporation were obtained in the E/NB copolymerization. A relationship was found between the electronic and steric properties of the phosphine ligands and the catalytic performance. Overall, the presence of electron-withdrawing ligand substituents increases the productivity, complexes with aryl phosphine (weaker σ-donor character) exhibiting a higher (co)polymerization initiation rate than those with alkyl phosphines (stronger σ-donor character). Steric effects also seem to play a key role since 1d and 1e, having large size phosphines (PCy3 θ = 170° and PtBu3 θ = 182°, respectively) are more active than 1a (PMe2Ph θ = 122°). In this case, the larger size of PtBu3 and PCy3 likely compensates for their higher donor strength compared to PMe2Ph.
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Affiliation(s)
- Giorgia Zanchin
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Alessia Gavezzoli
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Fabio Bertini
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Giovanni Ricci
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Giuseppe Leone
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
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10
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Syiemlieh I, Asthana M, Lal RA. Reactivity and Catalytic Activity of Homobimetallic Vanadium(V) Complex Derived from Bis(5‐chlorosalicylaldehyde)oxaloyldihydrazone Ligand. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4984] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ibanphylla Syiemlieh
- Department of Chemistry, Centre for Advanced StudiesNorth‐Eastern Hill University Shillong 793022 India
| | | | - Ram A. Lal
- Department of Chemistry, Centre for Advanced StudiesNorth‐Eastern Hill University Shillong 793022 India
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11
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Liu Y, Xiang H, Wang K, Wu G, Li Y. Efficient Preparation of Cyclic Olefin Copolymers with Unreacted Double Bonds by Using Thermal Stable Non‐Metallocene Vanadium Catalytic System. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi Liu
- School of Materials Science and EngineeringChongqing University of Technology Chongqing 400054 China
| | - Hong‐Xia Xiang
- School of Materials Science and EngineeringChongqing University of Technology Chongqing 400054 China
| | - Kai‐Ti Wang
- School of Materials Science and EngineeringChongqing University of Technology Chongqing 400054 China
| | - Gang Wu
- School of Materials Science and EngineeringChongqing University of Technology Chongqing 400054 China
| | - You‐Bing Li
- School of Materials Science and EngineeringChongqing University of Technology Chongqing 400054 China
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12
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Zanchin G, Vendier L, Pierro I, Bertini F, Ricci G, Lorber C, Leone G. Homo- and Co-Polymerization of Ethylene with Cyclic Olefins Catalyzed by Phosphine Adducts of (Imido)vanadium(IV) Complexes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00502] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Giorgia Zanchin
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, I-20133 Milano, Italy
| | - Laure Vendier
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP44099, 31077 Toulouse, France
- Université de Toulouse, UPS, INPT, LCC, 31077 Toulouse, France
| | - Ivana Pierro
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Complesso Monte S. Angelo, Via Cintia, I-80126 Napoli, Italy
| | - Fabio Bertini
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy
| | - Giovanni Ricci
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy
| | - Christian Lorber
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP44099, 31077 Toulouse, France
- Université de Toulouse, UPS, INPT, LCC, 31077 Toulouse, France
| | - Giuseppe Leone
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy
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14
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Białek M, Bisz E. Dichlorovanadium(IV) diamine-bis(phenolate) complexes for ethylene (co)polymerization and 1-olefin isospecific polymerization. J Catal 2018. [DOI: 10.1016/j.jcat.2018.03.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Zanchin G, Pierro I, Parisini E, Martí-Rujas J, Ricci G, Leone G. Synthesis, structure and behavior of vanadium(III) diphosphine complexes in the homo- and co-polymerization of ethylene with norbornene: the ligand donor strength and bite angle make the difference. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Gryca I, Czerwińska K, Machura B, Chrobok A, Shul’pina LS, Kuznetsov ML, Nesterov DS, Kozlov YN, Pombeiro AJL, Varyan IA, Shul’pin GB. High Catalytic Activity of Vanadium Complexes in Alkane Oxidations with Hydrogen Peroxide: An Effect of 8-Hydroxyquinoline Derivatives as Noninnocent Ligands. Inorg Chem 2018; 57:1824-1839. [DOI: 10.1021/acs.inorgchem.7b02684] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Izabela Gryca
- Department of Crystallography, Institute of Chemistry, University of Silesia, 9th Szkolna Street, 40-006 Katowice, Poland
| | - Katarzyna Czerwińska
- Department of Crystallography, Institute of Chemistry, University of Silesia, 9th Szkolna Street, 40-006 Katowice, Poland
| | - Barbara Machura
- Department of Crystallography, Institute of Chemistry, University of Silesia, 9th Szkolna Street, 40-006 Katowice, Poland
| | - Anna Chrobok
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland
| | - Lidia S. Shul’pina
- Nesmeyanov Institute
of Organoelement Compounds, Russian Academy of Sciences, Ulitsa Vavilova, 28, 119991 Moscow, Russia
| | - Maxim L. Kuznetsov
- Centro de Química
Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Dmytro S. Nesterov
- Centro de Química
Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Yuriy N. Kozlov
- Semenov
Institute of Chemical Physics, Russian Academy of Sciences, Ulitsa Kosygina, dom 4, Moscow, Russia
- Plekhanov Russian University of Economics, Stremyannyi pereulok, dom 36, Moscow 117997, Russia
| | - Armando J. L. Pombeiro
- Centro de Química
Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ivetta A. Varyan
- Plekhanov Russian University of Economics, Stremyannyi pereulok, dom 36, Moscow 117997, Russia
| | - Georgiy B. Shul’pin
- Semenov
Institute of Chemical Physics, Russian Academy of Sciences, Ulitsa Kosygina, dom 4, Moscow, Russia
- Plekhanov Russian University of Economics, Stremyannyi pereulok, dom 36, Moscow 117997, Russia
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Wang K, Wang J, Li Y, Pan L, Li Y. Facile, Efficient Copolymerization of Ethylene with Norbornene-Containing Dienes Promoted by Single Site Non-Metallocene Oxovanadium(V) Catalytic System. Polymers (Basel) 2017; 9:polym9080353. [PMID: 30971031 PMCID: PMC6418877 DOI: 10.3390/polym9080353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 08/08/2017] [Accepted: 08/08/2017] [Indexed: 11/16/2022] Open
Abstract
Non-metallocene oxovanadium(V) complexes bearing either [ONNO]-type amine pyridine bis(phenolate) ligands or [ONN]-type amine pyridine phenolate ligands were employed as efficient catalysts to copolymerize ethylene with several unsymmetrical norbornene-containing dienes, such as 5-vinyl-2-norbornene (VNB), 5-ethylidene-2-norbornene (ENB) or dicyclopentadiene (DCPD), producing copolymers with high comonomer incorporations (VNB: 33.0 mol %; ENB: 30.4 mol %; DCPD: 31.6 mol %, respectively) and high molecular weight (VNB: 86.4 kDa; ENB: 256 kDa; DCPD: 86.4 kDa, respectively). The enchainment of the dienes was proven to be exclusive of vinyl-addition via the C=C double bond of the norbornene ring while the other double bond was retained near the backbone without crosslinking. During the copolymerization of ethylene with ENB, a positive ‘comonomer effect’ was observed. The catalytic activities of the catalysts as well as the molecular weights and comonomer incorporations of the resultant copolymers could be tuned within a wide range by varying the structures of the catalysts and copolymerization conditions. The [ONN]-type oxovanadium(V) complexes showed higher catalytic activities than those of [ONNO]-type oxovanadium(V) complexes, irrespective of the structure of the dienes. In addition, the dominant chain transfer pathway of the non-metallocene oxovanadium(V) catalytic system promoted copolymerization was proven to be transfer to aluminum compounds.
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Affiliation(s)
- Kaiti Wang
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Jiabao Wang
- National Center for Nanoscience and Technology, Beijing 100190, China.
| | - Yanguo Li
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Li Pan
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Yuesheng Li
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
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Maurya MR, Uprety B, Avecilla F, Adão P, Kuznetsov ML, Costa Pessoa J. Solution Behaviour and Catalytic Potential towards Oxidation of Dopamine by Oxidovanadium(V) Complexes of Tripodal Tetradentate Ligands. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700342] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry; Indian Institute of Technology Roorkee; 247667 Roorkee India
| | - Bhawna Uprety
- Department of Chemistry; Indian Institute of Technology Roorkee; 247667 Roorkee India
| | - Fernando Avecilla
- Departamento de Química Fundamental; Universidade da Coruña; Campus de A Zapateira 15071 A Coruña Spain
| | - Pedro Adão
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade Lisboa; 1049-001 Lisboa Portugal
| | - Maxim L. Kuznetsov
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade Lisboa; 1049-001 Lisboa Portugal
| | - J. Costa Pessoa
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade Lisboa; 1049-001 Lisboa Portugal
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Vanadium(III) complexes containing phenoxy-imine-thiophene ligands: Synthesis, characterization and application to homo- and copolymerization of ethylene. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3678] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Vanadium(III)–catalyzed copolymerization of ethylene with norbornene: Microstructure at tetrad level and reactivity ratios. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Copolymerization of ethylene with norbornene or 1-octene using supported ionic liquid systems. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1866-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Soshnikov IE, Semikolenova NV, Bryliakov KP, Zakharov VA, Talsi EP. 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. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.07.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Ochędzan-Siodłak W, Bihun A, Olszowy A, Rajfur M, Jesionowski T, Siwińska-Stefańska K. Ethylene polymerization using vanadium catalyst supported on silica modified by pyridinium ionic liquid. POLYM INT 2016. [DOI: 10.1002/pi.5160] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | - Anna Bihun
- Faculty of Chemistry; Opole University; Oleska 48 45-052 Opole Poland
| | | | - Małgorzata Rajfur
- Independent Chair of Biotechnology and Molecular Biology; Opole University; B. Kominka 6 45-032 Opole Poland
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering; Poznań University of Technology; M. Skłodowskiej-Curie 2 60-965 Poznań Poland
| | - Katarzyna Siwińska-Stefańska
- Institute of Chemical Technology and Engineering; Poznań University of Technology; M. Skłodowskiej-Curie 2 60-965 Poznań Poland
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24
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Phuphuak Y, Bonnet F, Vendier L, Lorber C, Zinck P. Isoprene polymerization mediated by vanadium-[ONNO] complexes. Dalton Trans 2016; 45:12069-77. [PMID: 27396409 DOI: 10.1039/c6dt02288j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Vanadium complexes with amine-bis(phenolate) [ONNO] ligands catalyze the polymerization of isoprene when activated with AliBu3.
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Affiliation(s)
- Yupin Phuphuak
- UCCS
- Unité de Catalyse et Chimie du Solide
- CNRS
- UMR8181
- ENSCL
| | - Fanny Bonnet
- UCCS
- Unité de Catalyse et Chimie du Solide
- CNRS
- UMR8181
- ENSCL
| | - Laure Vendier
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse
- France
- Université de Toulouse
| | - Christian Lorber
- CNRS
- LCC (Laboratoire de Chimie de Coordination)
- F-31077 Toulouse
- France
- Université de Toulouse
| | - Philippe Zinck
- UCCS
- Unité de Catalyse et Chimie du Solide
- CNRS
- UMR8181
- ENSCL
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25
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Maurya MR, Uprety B, Avecilla F, Adão P, Costa Pessoa J. Vanadium(V) complexes of a tripodal ligand, their characterisation and biological implications. Dalton Trans 2015; 44:17736-55. [PMID: 26399883 DOI: 10.1039/c5dt02716k] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of the tripodal tetradentate dibasic ligand 6,6'-(2-(pyridin-2-yl)ethylazanediyl)bis(methylene)bis(2,4-di-tert-butylphenol), H2L(1)I, with [V(IV)O(acac)2] in CH3CN gives the V(V)O-complex, [V(V)O(acac)(L(1))] 1. Crystallisation of 1 in CH3CN at ∼0 °C gives dark blue crystals of 1, while at room temperature it affords dark green crystals of [{V(V)O(L(1))}2μ-O] 3. Upon prolonged treatment of 1 in MeOH, [V(V)O(OMe)(MeOH)(L(1))] 2 is obtained. All three complexes were analysed by single-crystal X-ray diffraction, depicting a distorted octahedral geometry around vanadium. In the reaction of H2L(1) with V(IV)OSO4 partial hydrolysis of the tripodal ligand results in the elimination of the pyridyl fragment of L(1) and the formation of H[V(V)O2(L(2))] 4 containing the ONO tridentate ligand 6,6'-azanediylbis(methylene)bis(2,4-di-tert-butylphenol), H2L(2)II. Compound 4, which was not fully characterised, undergoes dimerization in acetone yielding the hydroxido-bridged [{V(V)O(L(2))}2μ-(OH)2] 5 having a distorted octahedral geometry around each vanadium. In contrast, from a solution of 4 in acetonitrile, the dinuclear compound [{V(V)O(L(2))}2μ-O] 6 is obtained, with a trigonal bipyramidal geometry around each vanadium. The methoxido complex 2 is successfully employed as a functional catechol-oxidase mimic in the oxidation of catechol to o-quinone under air. The process was confirmed to follow a Michaelis-Menten type kinetics with respect to catechol, the Vmax and KM values obtained being 7.66 × 10(-6) M min(-1) and 0.0557 M, respectively, and the turnover frequency is 0.0541 min(-1). A similar reaction with the bulkier 3,5-di-tert-butylcatechol proceeded at a much slower rate. Complex 2 was also used as a catalyst precursor for the oxidative bromination of thymol in aqueous medium. The selectivity shows quite interesting trends, namely when not using excess of the primary oxidizing agent, H2O2, the para mono-brominated product corresponds to ∼93% of the products and no dibromo derivative is formed.
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Affiliation(s)
- Mannar R Maurya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, India.
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26
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Song Y, Nayab S, Jeon J, Park SH, Lee H. Cadmium(II) complexes containing N′-substituted N,N-di(2-picolyl)amine: The formation of monomeric versus dimeric complexes is affected by the N′-substitution group on the amine moiety. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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27
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Wang JB, Lu LP, Liu JY, Mu HL, Li YS. [ONNO]-type oxovanadium(V) complexes containing amine pyridine bis(phenolate) ligands: synthesis, characterization and catalytic behavior for ethylene (co)polymerization. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.12.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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