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Du Y, Gao S, Ma H, Lu S, Zhang Z, Zhao M. Catalytic Behavior of Cobalt Complexes Bearing Pyridine-Oxime Ligands in Isoprene Polymerization. Polymers (Basel) 2023; 15:4660. [PMID: 38139912 PMCID: PMC10871112 DOI: 10.3390/polym15244660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 11/29/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Several cobalt(II) complexes Co1-Co3 bearing pyridine-oxime ligands (L1 = pyridine-2-aldoxime for Co1; L2 = 6-methylpyridine-2-aldoxime for Co2; L3 = phenyl-2-pyridylketoxime for Co3) and picolinaldehyde O-methyl oxime (L4)-supported Co4 were synthesized and well characterized by FT-IR, mass spectrum and elemental analysis. The single-crystal X-ray diffraction of complex Co2 reveals that the cobalt center of CoCl2 is coordinated with two 6-methylpyridine-2-aldoxime ligands binding with Npyridine and Noxime atoms, which feature a distorted octahedral structure. These Co complexes Co1-Co4 displayed extremely high activity toward isoprene polymerization upon activation with small amount of AlClEt2 in toluene, giving polyisoprene with high activity up to 16.3 × 105 (mol of Co)-1(h)-1. And, the generated polyisoprene displayed high molecular weights and narrow molecular distribution with a cis-1,4-enriched selectivity. The type of cobalt complexes, cocatalyst and reaction temperature all have effects on the polymerization activity but not on the microstructure of polymer.
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Affiliation(s)
- Yuanxu Du
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China; (Y.D.); (S.G.); (H.M.); (S.L.)
- College of Agriculture and Forestry, Linyi University, Linyi 276000, China
| | - Shuo Gao
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China; (Y.D.); (S.G.); (H.M.); (S.L.)
| | - Hui Ma
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China; (Y.D.); (S.G.); (H.M.); (S.L.)
| | - Siqi Lu
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China; (Y.D.); (S.G.); (H.M.); (S.L.)
| | - Zhenhua Zhang
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China; (Y.D.); (S.G.); (H.M.); (S.L.)
| | - Mengmeng Zhao
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, China; (Y.D.); (S.G.); (H.M.); (S.L.)
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2
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Roopashree B, Mahesh B, Ramu R, Rekha ND, Manjula SN, Preethi G, Gayathri V. An insight into the cytotoxic, antimicrobial, antioxidant, and biocontrol perspective of novel Iron(III) complexes of substituted benzimidazoles: Inhibition kinetics and molecular simulations. J Biomol Struct Dyn 2023:1-17. [PMID: 37794762 DOI: 10.1080/07391102.2023.2263569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 09/17/2023] [Indexed: 10/06/2023]
Abstract
Mononuclear complexes [FeCl3L2(OH2)] (L = L1, L2) were designed and synthesized by combining FeCl3 with 2-(3'-Aminophenylbenzimidazole) (L1) and 2-[(3'-N-Salicylidinephenyl)benzimidazole] (L2) and were characterized by physico-analytical strategies. The redox properties of the complexes were disclosed by the cyclic voltammetric method. Further, the interactions of complexes with proteins were studied by performing molecular docking engaging protein models of common cancer therapeutic targets to foresee their affinity to bind to these proteins. The complexes evidenced better protein-ligand docking (-8.4 and -9.0 kcal mol-1) and higher binding energies than their ligands. However, the L1 complex displayed improved binding free energy (-33.576 ± 1.01 kcal mol-1) compared to the other complexes and individual ligands. These compounds were screened for in vitro cytotoxic assays against triple-negative breast cancer cell lines (MDA-MB-468 cells), anti-inflammatory, antimicrobial, and antioxidant properties. The in vitro study complemented the in silico assay; therefore, these compounds may be a viable choice for expanding anticancer therapy. Additionally, the L2 showed better biocontrol activity owing to the enhanced growth of Trichoderma and inhibited the growth of Fusarium oxysporum.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- B Roopashree
- Department of Chemistry, JSS Academy of Technical Education (Affiliated to Visvesvaraya Technological University, Belagavi), Bengaluru, India
| | - B Mahesh
- Department of Chemistry, JSS Academy of Technical Education (Affiliated to Visvesvaraya Technological University, Belagavi), Bengaluru, India
| | - Ramith Ramu
- Department of Biotechnology and Bioinformatics, School of Life Sciences, JSS Academy of Higher Education and Research, Mysuru, India
| | - N D Rekha
- Department of Bio-Technology, JSS College of Arts, Commerce and Science (Autonomous), Mysuru, India
| | - S N Manjula
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, India
| | - G Preethi
- Department of Chemistry, JSS Academy of Technical Education (Affiliated to Visvesvaraya Technological University, Belagavi), Bengaluru, India
| | - V Gayathri
- Department of Studies in Chemistry, Central College Campus, Bangalore City University, Bengaluru, India
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3
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Fu Y, Tang J, Hua J. Ultrahigh activity and broad temperature resistance of amine-imine cobalt precatalysts for butadiene polymerization. Dalton Trans 2023; 52:13146-13153. [PMID: 37655753 DOI: 10.1039/d3dt02460a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
A series of amine-imine cobalt complexes (Co1-Co7) has been prepared and characterized. The complexes Co3, Co4, and Co6 have a distorted tetrahedral geometry, as determined by single crystal X-ray diffraction. In the presence of ethylaluminum sesquichloride (EASC), Co3 exhibited ultra-high activity toward butadiene (Bd) polymerization (up to 7813 kgpolymer mol-1 h-1). The activity is higher than any yet recorded for which yield high cis-1,4 polybutadiene by the well-defined late-transition metal catalytic system. The catalyst also exhibited excellent tolerance towards the ratio of Co/Bd and broad temperature stability. At a ratio of Bd/Co3 = 50 000, the complexes Co1-3 can afford polybutadiene with yields higher than 96% within 2 hours. At -20 °C to 100 °C, the complex Co3 afforded relatively high polymer yields at low catalyst concentrations (Bd/Co3 = 25 000). In addition, all polymers showed a relatively high molecular weight (up to 1.06 × 106 g mol-1).
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Affiliation(s)
- Yuan Fu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, P.R. China.
| | - Jian Tang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, P.R. China.
| | - Jing Hua
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, P.R. China.
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Abdullah Al Awadh A. Biomedical applications of selective metal complexes of indole, benzimidazole, benzothiazole and benzoxazole: A review (From 2015 to 2022). Saudi Pharm J 2023; 31:101698. [PMID: 37533494 PMCID: PMC10393588 DOI: 10.1016/j.jsps.2023.101698] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/04/2023] [Indexed: 08/04/2023] Open
Abstract
Indole, benzoxazole benzothiazole and benzimidazole are excellent classes of organic heterocyclic compounds. These compounds show significant application in pharmacy, industries, dyes, medicine, polymers and food packages. These compounds also form metal complexes with copper, zinc, cadmium, nickel, cobalt, platinum, gold, palladium chromium, silver, iron, and other metals that have shown to be significant applications. Recently, researchers have attracted enormous attention toward heterocyclic compounds such as indole, benzimidazole, benzothiazole, benzoxazole, and their complexes due to their excellent medicinal applications such as anti-ulcerogenic, anti-cancer, antihypertensive, antifungal, anti-inflammatory, antitubercular, antiparasitic, anti-obesity, antimalarial, antiglycation, antiviral potency, antineuropathic, analgesic antioxidant, antihistaminic, and antibacterial potentials. In this article, we summarize the medicinal applications of these compounds as well as their metal complexes. We hope this article will help researchers in designing and synthesizing novel and potent compounds with significant applications in various fields.
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5
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Ricci G, Leone G, Zanchin G, Sommazzi A, Masi F, Forni A. Cobalt dichloride complexes with pyridyl-phosphine bidentate ligands: synthesis, characterization, and behavior in the polymerization of 1,3-butadiene. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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6
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Late Transition Metal Catalysts with Chelating Amines for Olefin Polymerization. Catalysts 2022. [DOI: 10.3390/catal12090936] [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
Polyolefins are the most consumed polymeric materials extensively used in our daily life and are usually generated by coordination polymerization in the polyolefin industry. Olefin polymerization catalysts containing transition metal–organic compound combinations are undoubtedly crucial for the development of the polyolefin industry. The nitrogen donor atom has attracted considerable interest and is widely used in combination with the transition metal for the fine-tuning of the chemical environment around the metal center. In addition to widely reported olefin polymerization catalysts with imine and amide donors (sp2 hybrid N), late transition metal catalysts with chelating amine donors (sp3 hybrid N) for olefin polymerization have never been reviewed. In this review paper, we focus on late transition metal (Ni, Pd, Fe, and Co) catalysts with chelating amines for olefin polymerization. A variety of late transition metal catalysts bearing different neutral amine donors are surveyed for olefin polymerization, including amine–imine, amine–pyridine, α-diamine, and [N, N, N] tridentate ligands with amine donors. The relationship between catalyst structure and catalytic performance is also encompassed. This review aims to promote the design of late transition metal catalysts with unique chelating amine donors for the development of high-performance polyolefin materials.
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Fang L, Zhao WP, Zhang CY, Zhang XQ, Shen XD, Liu H, Kakuchi T. Highly Efficient and Thermal Robust Cobalt Complexes for 1,3-Butadiene Polymerization. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2758-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Juráková J, Šalitroš I. Co(II) single-ion magnets: synthesis, structure, and magnetic properties. MONATSHEFTE FUR CHEMIE 2022; 153:1001-1036. [PMID: 35615113 PMCID: PMC9123880 DOI: 10.1007/s00706-022-02920-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 04/25/2022] [Indexed: 01/01/2023]
Abstract
Magnetoactive coordination compounds exhibiting bi- or multistability between two or more magnetic stable states present an attractive example of molecular switches. Currently, the research is focused on molecular nanomagnets, especially single molecule magnets (SMMs), which are molecules, where the slow relaxation of the magnetization based on the purely molecular origin is observed. Contrary to ferromagnets, the magnetic bistability of SMMs does not require intermolecular interactions, which makes them particularly interesting in terms of application potential, especially in the high-density storage of data. This paper aims to introduce the readers into a basic understanding of SMM behaviour, and furthermore, it provides an overview of the attractive Co(II) SMMs with emphasis on the relation between structural features, magnetic anisotropy, and slow relaxation of magnetization in tetra-, penta-, and hexacoordinate complexes. Graphical abstract
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Affiliation(s)
- Jana Juráková
- Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic
| | - Ivan Šalitroš
- Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, 81237 Slovakia
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
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9
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Karumban KS, Raut R, Gupta P, Muley A, Giri B, Kumbhakar S, Misra A, Maji S. Mononuclear cobalt(II) complexes with polypyridyl ligands: Synthesis, characterization, DNA interactions and in vitro cytotoxicity towards human cancer cells. J Inorg Biochem 2022; 233:111866. [DOI: 10.1016/j.jinorgbio.2022.111866] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/28/2022] [Accepted: 05/17/2022] [Indexed: 02/02/2023]
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10
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Misawa-Suzuki T, Ikeda R, Komatsu R, Toriba R, Miyamoto R, Nagao H. Geometry and Electronic Structures of Cobalt(II) and Iron(III) Complexes Bearing Bis(2-pyridylmethyl)ether or Alkylbis(2-pyridylmethyl)amine. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Liu L, Wang F, Zhang C, Liu H, Wu G, Zhang X. Thermally robust α-diimine nickel and cobalt complexes for Cis-1,4 selective 1,3-butadiene polymerizations. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2021.112044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Lianrong F, Yan-Bing W, Hui J, Xin-Qi H, Mao-Ping S. Applications of Cobalt Complexes in Olefin Polymerization. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202204036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Chirinos J, Ibarra D, Morillo Á, Llovera L, González T, Zárraga J, Larreal O, Guerra M. Synthesis, characterization and catecholase biomimetic activity of novel cobalt(II), copper(II), and iron(II) complexes bearing phenylene-bis-benzimidazole ligand. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Ricci G, Pampaloni G, Sommazzi A, Masi F. Dienes Polymerization: Where We Are and What Lies Ahead. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00004] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Giovanni Ricci
- CNR-Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), Via A. Corti 12, I-20133 Milano, Italy
| | - Guido Pampaloni
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Moruzzi 13, I-56124 Pisa, Italy
| | - Anna Sommazzi
- Centro Ricerca Novara, Versalis S.p.A., Via G. Fauser 4, I-28100 Novara, Italy
| | - Francesco Masi
- R&D Partner Catalysis, Versalis S.p.A., Piazza Boldrini 1, I-20097 San Donato Milanese (MI), Italy
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15
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Kumar A, Mohanty S, Gupta VK. BUTADIENE RUBBER: SYNTHESIS, MICROSTRUCTURE, AND ROLE OF CATALYSTS. RUBBER CHEMISTRY AND TECHNOLOGY 2021. [DOI: 10.5254/rct.21.79948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Butadiene rubber (BR) is one of the most useful and second most produced rubber worldwide. Polymerization of 1,3-butadiene (BD) is a highly stereospecific reaction that offers a wide variety of BR with different microstructures and influences the fundamental properties of the rubber. Since the first successful polymerization of conjugated diene using the Ziegler–Natta–based catalyst (TiCl4 or TiCl3 with aluminum alkyls) in 1954, the research on producing synthetic rubber with an appropriate catalyst system has been accelerated. Subsequently, various research groups are actively engaged in designing active catalyst systems based on a suitable combination of transition metal complexes with alkyl-aluminum and successfully using them in BD polymerization. Although various scientific inventions have proven their significance for the production of high-quality BR, with the rising demands in improving the quality of the product, research on developing new catalyst systems with enhanced catalytic activity and high stereoselectivity is still in progress. The present review focuses on the synthesis of BR using various transition metal catalysts and discusses their microstructures. The catalysts based on new-generation metal complexes with phosphorus, nitrogen, and oxygen donor ligands (e.g., phosphines, imines, 1,10-phenanthroline, and imino-pyridines) have been introduced. The role that catalysts play in the production of BR with different microstructures (i.e., high-cis, high-trans or low-cis, low-trans polybutadiene) has also been described. The combination of catalyst (transition metal complex) and suitable co-catalyst (alkyl-aluminum) is the major factor influencing the reaction and microstructure of the resulting polymer. This report focuses on the effect of transition metal catalysts (i.e., lithium [Li], titanium [Ti], zirconium [Zr], iron [Fe], cobalt [Co], nickel [Ni], and neodymium [Nd]) on the activity and stereoselectivity of polymers such as 1,4-cis-, 1,4-trans-, and 1,2-vinyl-polybutadiene.
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Affiliation(s)
- Amit Kumar
- Polymer Synthesis and Catalysis Group, Reliance Industries Limited, Navi Mumbai, Maharashtra, India
| | - Subhra Mohanty
- Polymer Synthesis and Catalysis Group, Reliance Industries Limited, Navi Mumbai, Maharashtra, India
| | - Virendra Kumar Gupta
- Polymer Synthesis and Catalysis Group, Reliance Industries Limited, Navi Mumbai, Maharashtra, India
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16
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Zanchin G, Piovano A, Amodio A, De Stefano F, Di Girolamo R, Groppo E, Leone G. NEt 3-Triggered Synthesis of UHMWPE Using Chromium Complexes Bearing Non-innocent Iminopyridine Ligands. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Giorgia Zanchin
- CNR, Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), via A. Corti 12, I-20133 Milano, Italy
| | - Alessandro Piovano
- Dipartimento di Chimica, NIS Interdepartmental Research Center and INSTM Reference Center, Università degli Studi di Torino, Via G. Quarello 15A, I-10135 Torino, Italy
| | - Alessia Amodio
- Dipartimento di Chimica, NIS Interdepartmental Research Center and INSTM Reference Center, Università degli Studi di Torino, Via G. Quarello 15A, I-10135 Torino, Italy
| | - Fabio De Stefano
- Dipartimento di Scienze Chimiche, Università di Napoli “Federico II”, Complesso Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli “Federico II”, Complesso Monte S. Angelo, via Cintia, I-80126 Napoli, Italy
| | - Elena Groppo
- Dipartimento di Chimica, NIS Interdepartmental Research Center and INSTM Reference Center, Università degli Studi di Torino, Via G. Quarello 15A, I-10135 Torino, Italy
| | - Giuseppe Leone
- CNR, Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” (SCITEC), via A. Corti 12, I-20133 Milano, Italy
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17
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Li D, Liu K, Tang J, Cui Z, Hua J. Preparation of high 1,2‐orientation butadiene‐styrene copolymer by coordination copolymerization with molybdenum‐based catalytic system. J Appl Polym Sci 2020. [DOI: 10.1002/app.48897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Di Li
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber and PlasticsQingdao University of Science and Technology Qingdao Shandong 266042 People's Republic of China
| | - Kai Liu
- Beijing National Laboratory for Molecular Sciences, Organic Solid LaboratoryInstitute of Chemistry, Chinese Academy of Sciences Beijing 100190 People's Republic of China
| | - Jian Tang
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber and PlasticsQingdao University of Science and Technology Qingdao Shandong 266042 People's Republic of China
| | - Zixu Cui
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber and PlasticsQingdao University of Science and Technology Qingdao Shandong 266042 People's Republic of China
| | - Jing Hua
- Key Laboratory of Rubber‐Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber and PlasticsQingdao University of Science and Technology Qingdao Shandong 266042 People's Republic of China
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18
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Zubkevich SV, Tuskaev VA, Gagieva SC, Kayda AS, Khrustalev VN, Pavlov AA, Zarubin DN, Bulychev BM. NNNO‐Heteroscorpionate nickel (II) and cobalt (II) complexes for ethylene oligomerization: the unprecedented formation of odd carbon number olefins. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sergey V. Zubkevich
- Department of Chemistry Lomonosov Moscow State University Leninskie Gory 11 Moscow 119991 Russia
| | - Vladislav A. Tuskaev
- Department of Chemistry Lomonosov Moscow State University Leninskie Gory 11 Moscow 119991 Russia
- Russian Academy of Sciences A.N. Nesmeyanov Institute of Organoelement Compounds Vavilova st. 28 Moscow 119991 Russia
| | - Svetlana Ch. Gagieva
- Department of Chemistry Lomonosov Moscow State University Leninskie Gory 11 Moscow 119991 Russia
| | - Anatoliy S. Kayda
- Department of Chemistry Lomonosov Moscow State University Leninskie Gory 11 Moscow 119991 Russia
| | - Victor N. Khrustalev
- Peoples' Friendship University of Russia (RUDN University) Miklukho‐Maklay St., 6 Moscow 117198 Russian Federation
- Russian Academy of Sciences Zelinsky Institute of Organic Chemistry Leninsky Prospekt 47 Moscow 119991 Russia
| | - Alexander A. Pavlov
- Russian Academy of Sciences A.N. Nesmeyanov Institute of Organoelement Compounds Vavilova st. 28 Moscow 119991 Russia
| | - Dmitry N. Zarubin
- Russian Academy of Sciences A.N. Nesmeyanov Institute of Organoelement Compounds Vavilova st. 28 Moscow 119991 Russia
| | - Boris M. Bulychev
- Department of Chemistry Lomonosov Moscow State University Leninskie Gory 11 Moscow 119991 Russia
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19
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Messinis AM, Wright WRH, Hanton MJ, Dyer PW. Additives boosting the performance of tungsten imido-mediated ethylene dimerization systems for industrial application. Chem Commun (Camb) 2020; 56:6886-6889. [PMID: 32435789 DOI: 10.1039/d0cc03077e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While activation of tungsten bis(imido) complexes [WCl2(NAr)2(dme)] with EtAlCl2 affords active, and moderately selective ethylene dimerization catalysts, addition of Et3N or Oct4NCl leads to a doubling in productivity and activity, along with increased selectivity (e.g., >93% C4, >99% 1-C4). The performance of the resulting tungsten-based catalyst package is competitive with that of Axens' commercialised Ti-based AlphaButol process and exemplifies the wide potential of similar additives in selective oligomerization.
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Affiliation(s)
- Antonis M Messinis
- Center for Sustainable Chemical Processes, Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.
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20
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Brachňaková B, Matejová S, Moncol J, Herchel R, Pavlik J, Moreno-Pineda E, Ruben M, Šalitroš I. Stereochemistry of coordination polyhedra vs. single ion magnetism in penta- and hexacoordinated Co(ii) complexes with tridentate rigid ligands. Dalton Trans 2020; 49:1249-1264. [PMID: 31904039 DOI: 10.1039/c9dt04592a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tridentate ligand L (2,6-bis(1-(3,5-di-tert-butylbenzyl)-1H-benzimidazol-2-yl)pyridine) was synthesized and used for the preparation of three pentacoordinated Co(ii) complexes of formula [Co(L)X2] (where X = NCS- for 1, X = Cl- for 2 and X = Br- for 3) and one ionic compound 4 ([Co(L)2]Br2·2CH3OH·H2O) containing a hexacoordinated Co(ii) centre. Static magnetic data were analysed with respect to the spin (1-3) or the Griffith-Figgis (4) Hamiltonian. Ab initio calculations enable us to identify the positive axial magnetic anisotropy parameter D accompanied by a significant degree of rhombicity in the reported complexes. Also, magneto-structural correlation was outlined for this class of compounds. Moreover, all four compounds exhibit slow relaxation of magnetisation at an applied static magnetic field with either both low- and high-frequency relaxation channels (3) or a single high-frequency relaxation process (1, 2 and 4). The interplay between the stereochemistry of coordination polyhedra, magnetic anisotropy and the relaxation processes was investigated and discussed in detail.
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Affiliation(s)
- Barbora Brachňaková
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia.
| | - Simona Matejová
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia.
| | - Ján Moncol
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia.
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech Republic
| | - Ján Pavlik
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia.
| | - Eufemio Moreno-Pineda
- Institut für Nanotechnologie, Karlsruher Institut für Technologie, Postfach 3640, Karlsruhe 76021, Germany
| | - Mario Ruben
- Institut für Nanotechnologie, Karlsruher Institut für Technologie, Postfach 3640, Karlsruhe 76021, Germany and Institute de Physique et Chimie de Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Ivan Šalitroš
- Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia. and Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech Republic and Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic
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21
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Zubkevich SV, Tuskaev VA, Gagieva SC, Pavlov AA, Khrustalev VN, Polyakova OV, Zarubin DN, Kurmaev DA, Kolosov NA, Bulychev BM. Catalytic systems based on nickel(ii) complexes with bis(3,5-dimethylpyrazol-1-yl)methane – impact of PPh3 on the formation of precatalysts and selective dimerization of ethylene. NEW J CHEM 2020. [DOI: 10.1039/c9nj05704h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Triphenylphosphine facilities ionization of Ni(ii) complexes with bis(3,5-dimethylpyrazol-1-yl)metane, which results in highly active catalytic systems for ethylene dimerization.
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Affiliation(s)
- S. V. Zubkevich
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - V. A. Tuskaev
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
- A. N. Nesmeyanov Institute of Organoelement Compounds
| | - S. Ch. Gagieva
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - A. A. Pavlov
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119334
- Russian Federation
| | - V. N. Khrustalev
- National Research Center “Kurchatov Institute”
- Moscow 123182
- Russian Federation
- Peoples’ Friendship University of Russia (RUDN University)
- Moscow 117198
| | - O. V. Polyakova
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - D. N. Zarubin
- A. N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow 119334
- Russian Federation
| | - D. A. Kurmaev
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - N. A. Kolosov
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
| | - B. M. Bulychev
- Department of Chemistry
- Lomonosov Moscow State University
- Moscow 119991
- Russian Federation
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22
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Cui Y, Ge Y, Li Y, Tao J, Yao J, Dong Y. Single-ion magnet behavior of two pentacoordinate CoII complexes with a pincer ligand 2,6-bis(imidazo[1,5-a] pyridin-3-yl)pyridine. Struct Chem 2019. [DOI: 10.1007/s11224-019-01429-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Polymerization of conjugated dienes and olefins promoted by cobalt complexes supported by phosphine oxide ligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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24
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Tanaka R, Ikeda K, Nakayama Y, Shiono T. Cis-1,4 Specific Polymerization of 1,3-Butadiene Using PNP-pincer Ligated Iron(II) Complexes. CHEM LETT 2019. [DOI: 10.1246/cl.190115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ryo Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
| | - Kenshi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
| | - Yuushou Nakayama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
| | - Takeshi Shiono
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
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25
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Wang F, Liu H, Hu Y, Zhang X. Influence of imine‐
carbon
substituent in 6‐bromo‐2‐iminopyridine‐based cobalt(II) complexes on 1,3‐butadiene polymerization. POLYM INT 2019. [DOI: 10.1002/pi.5854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Feng Wang
- School of Chemical EngineeringChangchun University of Technology Changchun Jilin China
| | - Heng Liu
- CAS Key Laboratory of High‐Performance Synthetic Rubber and its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin China
| | - Yanming Hu
- CAS Key Laboratory of High‐Performance Synthetic Rubber and its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin China
| | - Xuequan Zhang
- CAS Key Laboratory of High‐Performance Synthetic Rubber and its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin China
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26
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Solvent effect in 1,3-butadiene polymerization by cyclopentadienyl titanium trichloride (CpTiCl3)/methylaluminoxane (MAO) and pentamethylcyclopentadienyl titanium trichloride (Cp*TiCl3)/MAO catalysts. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Tuskaev VA, Zubkevich SV, Saracheno D, Gagieva SC, Dorovatovskii PV, Kononova EG, Khrustalev VN, Zarubin DN, Bulychev BM, Kissin YV. Nickel(II) complexes with tripodal NNN ligands as homogenous and supported catalysts for ethylene oligomerization. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.12.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Zhang X, Zhu G, Mahmood Q, Zhao M, Wang L, Jing C, Wang X, Wang Q. Iminoimidazole-based Co(II) and Fe(II) complexes: Syntheses, characterization, and catalytic behaviors for isoprene polymerization. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/pola.29323] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xianhui Zhang
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
- Center of Materials Science and Optoelectronics Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Guangqian Zhu
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
- Center of Materials Science and Optoelectronics Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Qaiser Mahmood
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Mengmeng Zhao
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Liang Wang
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Chuyang Jing
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
- Center of Materials Science and Optoelectronics Engineering; University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xiaowu Wang
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Qinggang Wang
- Key Laboratory of Biobased Materials; Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
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29
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Dong B, Liu H, Peng C, Zhao W, Zheng W, Zhang C, Bi J, Hu Y, Zhang X. Synthesis of stereoblock polybutadiene possessing cis-1,4 and syndiotactic-1,2 segments by imino-pyridine cobalt complex-based catalyst through one-pot polymerization process. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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30
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Zhao J, Chen H, Li W, Jia X, Zhang X, Gong D. Polymerization of Isoprene Promoted by Aminophosphine(ory)-Fused Bipyridine Cobalt Complexes: Precise Control of Molecular Weight and cis-1,4-alt-3,4 Sequence. Inorg Chem 2018. [DOI: 10.1021/acs.inorgchem.8b00270] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junyi Zhao
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Huafeng Chen
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Wenxin Li
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Xiaoyu Jia
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799, Jimei Road, Xiamen, Fujian 361021, P. R. China
- Ningbo Urban Environment Observation and Research Station-NUEORS, Chinese Academy of Sciences, Ningbo, Zhejiang 315830, P. R. China
| | - Xuequan Zhang
- Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
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31
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Mono- and Binuclear Cobalt(II) Complexes Supported by Quinoline-2-imidate Ligands: Synthesis, Characterization, and 1,3-Butadiene Polymerization. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2097-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Mondal AK, Goswami T, Misra A, Konar S. Probing the Effects of Ligand Field and Coordination Geometry on Magnetic Anisotropy of Pentacoordinate Cobalt(II) Single-Ion Magnets. Inorg Chem 2017; 56:6870-6878. [PMID: 28561569 DOI: 10.1021/acs.inorgchem.7b00233] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this work, the effects of ligand field strength as well as the metal coordination geometry on magnetic anisotropy of pentacoordinated CoII complexes have been investigated using a combined experimental and theoretical approach. For that, a strategic design and synthesis of three pentacoordinate CoII complexes [Co(bbp)Cl2]·(MeOH) (1), [Co(bbp)Br2]·(MeOH) (2), and [Co(bbp)(NCS)2] (3) has been achieved by using the tridentate coordination environment of the ligand in conjunction with the accommodating terminal ligands (i.e., chloride, bromide, and thiocyanate). Detailed magnetic studies disclose the occurrence of slow magnetic relaxation behavior of CoII centers with an easy-plane magnetic anisotropy. A quantitative estimation of ZFS parameters has been successfully performed by density functional theory (DFT) calculations. Both the sign and magnitude of ZFS parameters are prophesied well by this DFT method. The theoretical results also reveal that the α → β (SOMO-SOMO) excitation contributes almost entirely to the total ZFS values for all complexes. It is worth noting that the excitation pertaining to the most positive contribution to the ZFS parameter is the dxy → dx2-y2 excitation for complexes 1 and 2, whereas for complex 3 it is the dz2 → dx2-y2 excitation.
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Affiliation(s)
- Amit Kumar Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Tamal Goswami
- Department of Chemistry, University of North Bengal , Siliguri, Darjeeling 734013, West Bengal, India
| | - Anirban Misra
- Department of Chemistry, University of North Bengal , Siliguri, Darjeeling 734013, West Bengal, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
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33
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Rajnák C, Varga F, Titiš J, Moncoľ J, Boča R. Field‐Supported Single‐Molecule Magnets of Type [Co(bzimpy)X
2
]. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601279] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cyril Rajnák
- Department of Chemistry Faculty of Natural Sciences University of SS Cyril and Methodius 91701 Trnava Slovakia
| | - Filip Varga
- Department of Chemistry Faculty of Natural Sciences University of SS Cyril and Methodius 91701 Trnava Slovakia
| | - Ján Titiš
- Department of Chemistry Faculty of Natural Sciences University of SS Cyril and Methodius 91701 Trnava Slovakia
| | - Ján Moncoľ
- Institute of Inorganic Chemistry FCHPT Slovak University of Technology 81237 Bratislava Slovakia
| | - Roman Boča
- Department of Chemistry Faculty of Natural Sciences University of SS Cyril and Methodius 91701 Trnava Slovakia
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34
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Chen H, Pan W, Huang KW, Zhang X, Gong D. Controlled polymerization of isoprene promoted by a type of hemilabile XPN3 (X = O, S) ligand supported cobalt(ii) complexes: the role of a hemilabile donor on the level of control. Polym Chem 2017. [DOI: 10.1039/c7py00252a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cobalt dichloride complexes (Co1–Co9) carrying a novel type of hemilabile donor PN3 (L1–L3) or XPN3 (L4–L6, X = O; L7–L9, X = S) are reported as precursors for controlled polymerization of isoprene.
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Affiliation(s)
- Huafeng Chen
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Weijing Pan
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering and KAUST Catalysis Centre
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Xuequan Zhang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering
- Ningbo University
- Ningbo 315211
- P. R. China
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35
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Tomov AK, Nobbs JD, Chirinos JJ, Saini PK, Malinowski R, Ho SKY, Young CT, McGuinness DS, White AJP, Elsegood MRJ, Britovsek GJP. Alternating α-Olefin Distributions via Single and Double Insertions in Chromium-Catalyzed Ethylene Oligomerization. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00671] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Atanas K. Tomov
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - James D. Nobbs
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - Juan J. Chirinos
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - Prabhjot K. Saini
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - Robert Malinowski
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - Sarah K. Y. Ho
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - Craig T. Young
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
| | - David S. McGuinness
- School
of Physical Sciences−Chemistry, University of Tasmania, Private
Bag 75, Hobart 7001, Australia
| | - Andrew J. P. White
- Department
of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, U.K
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36
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Synthesis, X-ray structure, theoretical investigation, corrosion inhibition and antimicrobial activity of benzimidazole thioether and theirs metal complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.08.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Chen BT, Morlanés N, Adogla E, Takanabe K, Rodionov VO. An Efficient and Stable Hydrophobic Molecular Cobalt Catalyst for Water Electro-oxidation at Neutral pH. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01237] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ba-Tian Chen
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Natalia Morlanés
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Enoch Adogla
- Department
of Chemistry and Biochemistry, University of South Carolina, 631
Sumter Street, Columbia, South Carolina 29208, United States
| | - Kazuhiro Takanabe
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Valentin O. Rodionov
- KAUST
Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
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38
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Synthesis, characterization and evaluation of porous polybenzimidazole materials for CO2 adsorption at high pressures. ADSORPTION 2016. [DOI: 10.1007/s10450-016-9762-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Iminopyridine-Based Cobalt(II) and Nickel(II) Complexes: Synthesis, Characterization, and Their Catalytic Behaviors for 1,3-Butadiene Polymerization. Polymers (Basel) 2016; 8:polym8010012. [PMID: 30979108 PMCID: PMC6432764 DOI: 10.3390/polym8010012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/06/2016] [Accepted: 01/07/2016] [Indexed: 12/04/2022] Open
Abstract
A series of iminopyridine ligated Co(II) (1a–7a) and Ni(II) (1b–7b) complexes were synthesized. The structures of complexes 3a, 4a, 5a, 7a, 5b, and 6b were determined by X-ray crystallographic analyses. Complex 3a formed a chloro-bridged dimer, whereas 4a, 5a, and 7a, having a substituent (4a, 5a: CH3; 7a: Br) at the 6-position of pyridine, producing the solid structures with a single ligand coordinated to the central metal. The nickel atom in complex 5b features distorted trigonal-bipyramidal geometry with one THF molecule ligating to the metal center. All the complexes activated by ethylaluminum sesquichloride (EASC) were evaluated in 1,3-butadiene polymerization. The catalytic activity and selectivity were significantly influenced by the ligand structure and central metal. Comparing with the nickel complexes, the cobalt complexes exhibited higher catalytic activity and cis-1,4-selectivity. For both the cobalt and nickel complexes, the aldimine-based complexes showed higher catalyst activity than their ketimine counterparts.
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40
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Alnajrani MN, Mair FS. Bidentate forms of β-triketimines: syntheses, characterization and outstanding performance of enamine–diimine cobalt complexes in isoprene polymerization. Dalton Trans 2016; 45:10435-46. [DOI: 10.1039/c6dt01064d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
When a normally tridentate β-triketimine ligand binds to Co(ii) in a bidentate enamine–diimine form, is partnered with the weakly co-ordinating BArF anion and activated with ethylaluminiumsesquichoride, the most active catalyst yet found forcis-1,4-selective polymerization of isoprene results.
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Affiliation(s)
| | - Francis S. Mair
- School of Chemistry
- The University of Manchester
- Chemistry Building
- Manchester
- UK
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41
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Gong D, Zhang X, Huang KW. Regio- and stereo-selective polymerization of 1,3-butadiene catalyzed by phosphorus–nitrogen PN3-pincer cobalt(ii) complexes. Dalton Trans 2016; 45:19399-19407. [DOI: 10.1039/c6dt03722d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of cobalt complexes (CoCl2-H, CoCl2-Me, CoCl2-iPr, CoBr2-H, CoBr2-Me, CoBr2-iPr, CoI2-H, CoI2-Me, and CoI2-iPr) supported by a PN3 ligand (6-(N,N′-di-t-butylphosphino)-2-pyrazol-yl-aminopyridine) have been prepared and fully characterized by FT-IR, elemental analysis, and X-ray analysis.
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Affiliation(s)
- Dirong Gong
- Division of Physical Sciences and Engineering and KAUST Catalysis Center
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
- Faculty of Materials Science and Chemical Engineering
| | - Xuequan Zhang
- Key Laboratory of Synthetic Rubber
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering and KAUST Catalysis Center
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
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42
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Highly active and stereospecific polymerization of 1,3-butadiene catalyzed by bis{[2-(4,5-diphenylimidazolyl)phenylimino]phenolate}cobalt(II) complexes. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.09.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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43
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Guo J, Zhang C, Bi J, Zhang H, Bai C, Hu Y, Zhang X. Cobalt complexes bearing pyridine-imino ligands with bulky aryl substituents: Synthesis, characterization, and 1,3-butadiene polymerization behaviors. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Borah N, Gogoi A, Das G. Competitive anion binding aptitude of benzimidazole and amide functionality of a non-symmetrical receptor in solid state and solution phase. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1099656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nilotpal Borah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India
| | - Abhijit Gogoi
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India
| | - Gopal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India
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45
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Gong D, Liu W, Pan W, Chen T, Jia X, Huang KW, Zhang X. Tunable regioselectivity in 1,3-butadiene polymerization by using 2,6-bis(dimethyl-2-oxazolin-2-yl)pyridine incorporated transition metal (Cr, Fe and Co) catalysts. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.05.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Liu H, Wang F, Han C, Zhang H, Bai C, Hu Y, Zhang X. Cobalt and nickel complexes supported by 2,6-bis(imidate)pyridyl ligands: Synthesis, characterization, and 1,3-butadiene polymerization studies. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.05.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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47
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Wu H, Peng H, Zhang Y, Wang F, Zhang H, Wang C, Yang Z. Synthesis, crystal structure, electrochemistry and antioxidative activity of copper(II), manganese(II) and nickel(II) complexes containing bis(N
-ethylbenzimidazol-2-ylmethyl)aniline. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3313] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Huilu Wu
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
| | - Hongping Peng
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
| | - Yanhui Zhang
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
| | - Fei Wang
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
| | - Han Zhang
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
| | - Cuiping Wang
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
| | - Zaihui Yang
- School of Chemical and Biological Engineering; Lanzhou Jiaotong University; Lanzhou Gansu 730070 PR China
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48
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Wu H, Zhang H, Wang F, Peng H, Cui Y, Li Y, Zhang Y. Zinc(II) and Co(II) Complexes based on Bis(N-allylbenzimidazol-2-ylmethyl) Aniline: Synthesis, Crystal Structures and Antioxidative Activity. JOURNAL OF CHEMICAL RESEARCH 2015. [DOI: 10.3184/174751915x14210834541638] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bis(N-allylbenzimidazol-2-ylmethyl)aniline (L) and its complexes, [Zn(L)(Cl)2] and [Co(L)(Cl)2], have been synthesised and the structures of both complexes have been determined. [Zn(L)(Cl)2] can be described as distorted tetrahedron, while [Co(L)(Cl)2] has a distorted trigonal bipyramidal geometry. In addition, the complexes were found to possess potent hydroxyl antioxidant activity and be better than standard antioxidants like vitamin C and mannitol. In particular, [Co(L)(Cl)2] displayed excellent activity towards the superoxide radical.
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Affiliation(s)
- Huilu Wu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
| | - Han Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
| | - Fei Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
| | - Hongping Peng
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
| | - Yiming Cui
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
| | - Yuanyuan Li
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
| | - Yanhui Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu, 730070, P.R. China
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Guo J, Wang B, Bi J, Zhang C, Zhang H, Bai C, Hu Y, Zhang X. Synthesis, characterization and 1,3-butadiene polymerization studies of cobalt dichloride complexes bearing pyridine bisoxazoline ligands. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.01.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Wu H, Zhang J, Zhang Y, Chen C, Li Z, Wu M, Yang Z. Syntheses, crystal structures, electrochemical studies, and antioxidant activities of zinc(II) and copper(II) complexes with bis(2-benzimidazolyl) aniline derivatives. J COORD CHEM 2015. [DOI: 10.1080/00958972.2014.1003549] [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]
Affiliation(s)
- Huilu Wu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
| | - Jiawen Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
| | - Yanhui Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
| | - Chengyong Chen
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
| | - Zhen Li
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
| | - Mingchang Wu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
| | - Zaihui Yang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, PR China
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