1
|
Pahar S, Kundu G, George CP, Gonnade RG, Sen SS. Substitution at a Coordinatively Saturated Aluminum Center Stabilized by Imidazolidin-2-imine. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sanjukta Pahar
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Gargi Kundu
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Christy P. George
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Rajesh G. Gonnade
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sakya S. Sen
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
2
|
Koneczny M, Erol AB, Mauduit M, Eisen MS, Tamm M. Titanium complexes with unsymmetrically substituted imidazolin-2-iminato ligands. Dalton Trans 2022; 51:11448-11456. [PMID: 35822511 DOI: 10.1039/d2dt01740g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of the unsymmetrical N-heterocyclic carbenes 1-(2,4,6-trimethylphenyl)-3-(adamantyl)imidazolin-2-ylidene (IAdMes, 1a) and 1-(2,6-diisopropylphenyl)-3-(adamantyl)imidazolin-2-ylidene (IAdDipp, 1b) with trimethylsilyl azide furnished the 2-(trimethylsilylimino)imidazolines 2a (ImAdMesNSiMe3) and 2b (ImAdDippNSiMe3). Desilylation by stirring in methanol gave the corresponding imidazolin-2-imines 3a (ImAdMesNH) and 3b (ImAdDippNH). 2a and 2b were treated with [TiCl4(THF)2] (THF = tetrahydrofuran) and [CpTiCl3] (Cp = η5-C5H5) to form the mono- and bis(imidazolin-2-iminato) titanium(IV) complexes [(ImAdRN)TiCl3] (4, R = Mes, Dipp), [Cp(ImAdRN)TiCl2] (5, R = Mes, Dipp), and [(ImAdRN)2TiCl2] (6, R = Mes, Dipp). The crystal structures of all compounds except 2b were determined by X-ray diffraction analysis.
Collapse
Affiliation(s)
- Marvin Koneczny
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Brauschweig, Germany.
| | - Arife Büsra Erol
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Brauschweig, Germany.
| | - Marc Mauduit
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Moris S Eisen
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, 32000 Haifa, Israel
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Brauschweig, Germany.
| |
Collapse
|
3
|
Gu J, Wang X, Zhao W, Zhuang R, Zhang C, Zhang X, Cai Y, Yuan W, Luan B, Dong B, Liu H. Synthesis of Half-Titanocene Complexes Containing π,π-Stacked Aryloxide Ligands, and Their Use as Catalysts for Ethylene (Co)polymerizations. Polymers (Basel) 2022; 14:polym14071427. [PMID: 35406299 PMCID: PMC9002825 DOI: 10.3390/polym14071427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/22/2022] [Accepted: 03/28/2022] [Indexed: 01/27/2023] Open
Abstract
A family of half-titanocene complexes bearing π,π-stacked aryloxide ligands and their catalytic performances towards ethylene homo-/co- polymerizations were disclosed herein. All the complexes were well characterized, and the intermolecular π,π-stacking interactions could be clearly identified from single crystal X-ray analysis, in which a stronger interaction could be reflected for aryloxides bearing bigger π-systems, e.g., pyrenoxide. Due to the formation of such interactions, these complexes were able to highly catalyze the ethylene homopolymerizations and copolymerization with 1-hexene comonomer, even without any additiveson the aryloxide group, which showed striking contrast to other half-titanocene analogues, implying the positive influence of π,π-stacking interaction in enhancing the catalytic performances of the corresponding catalysts. Moreover, it was found that addition of external pyrene molecules was capable of boosting the catalytic efficiency significantly, due to the formation of a stronger π,π-stacking interaction between the complexes and pyrene molecules.
Collapse
Affiliation(s)
- Jin Gu
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Chambroad Chemical Industry Research Institute Co., Ltd., Qingdao 266042, China; (J.G.); (R.Z.); (Y.C.); (W.Y.); (B.L.)
| | - Xiaohua Wang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (W.Z.); (C.Z.); (X.Z.)
| | - Wenpeng Zhao
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (W.Z.); (C.Z.); (X.Z.)
| | - Rui Zhuang
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Chambroad Chemical Industry Research Institute Co., Ltd., Qingdao 266042, China; (J.G.); (R.Z.); (Y.C.); (W.Y.); (B.L.)
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Chunyu Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (W.Z.); (C.Z.); (X.Z.)
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuequan Zhang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (W.Z.); (C.Z.); (X.Z.)
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yinghui Cai
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Chambroad Chemical Industry Research Institute Co., Ltd., Qingdao 266042, China; (J.G.); (R.Z.); (Y.C.); (W.Y.); (B.L.)
| | - Wenbo Yuan
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Chambroad Chemical Industry Research Institute Co., Ltd., Qingdao 266042, China; (J.G.); (R.Z.); (Y.C.); (W.Y.); (B.L.)
| | - Bo Luan
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Chambroad Chemical Industry Research Institute Co., Ltd., Qingdao 266042, China; (J.G.); (R.Z.); (Y.C.); (W.Y.); (B.L.)
| | - Bo Dong
- Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Chambroad Chemical Industry Research Institute Co., Ltd., Qingdao 266042, China; (J.G.); (R.Z.); (Y.C.); (W.Y.); (B.L.)
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Correspondence: (B.D.); (H.L.)
| | - Heng Liu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, Qingdao 266042, China; (X.W.); (W.Z.); (C.Z.); (X.Z.)
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Correspondence: (B.D.); (H.L.)
| |
Collapse
|
4
|
Synthesis of mono- and bis- benzimidazolin-2-iminato titanium complexes and their catalytic performances in ethylene homo- and co- polymerizations. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
5
|
Pan D, Fan K, Zhang S, Wu Y. Syndiospecific Polymerization of Styrene Catalyzed by Half‐titanocenes Containing Monodentate Anionic Nitrogen Ligands. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dan‐Dan Pan
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China
| | - Ke‐Xin Fan
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China
| | - Shu Zhang
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China
| | - Yi‐Xian Wu
- State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing 100029 China
| |
Collapse
|
6
|
Kitphaitun S, Yan Q, Nomura K. Effect of para-Substituents in Ethylene Copolymerizations with 1-Decene, 1-Dodecene, and with 2-Methyl-1-Pentene Using Phenoxide Modified Half-Titanocenes-MAO Catalyst Systems. ChemistryOpen 2021; 10:867-876. [PMID: 34227256 PMCID: PMC8409091 DOI: 10.1002/open.202100047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/21/2021] [Indexed: 11/16/2022] Open
Abstract
Effect of para-substituents in the ethylene (E) copolymerization with 1-decene (DC), 1-dodecene (DD), and with 2-methyl-1-pentene (2M1P) using a series of Cp*TiCl2 (O-2,6-i Pr2 -4-R-C6 H2 ) [R=H (1), t Bu (2), Ph (3), CHPh2 (4), CPh3 (5), SiMe3 (6), SiEt3 (7), and newly prepared 4-t BuC6 H4 (8) and 3,5-Me2 C6 H3 (9)]-MAO catalyst systems has been studied. The activities in these copolymerization reactions were affected by the para-substituent, and the SiMe3 (6), SiEt3 (7) and 3,5-Me2 C6 H3 (9) analogues showed the higher activities at 50 °C in the E copolymerization reactions with DC (1.06-1.44×106 kg-polymer/mol-Ti⋅h), DD (1.04-1.88×106 kg-polymer/mol-Ti⋅h) than the others, whereas no significant differences were observed in the comonomer incorporations. Complexes 6 and 7 also showed the higher activities at 50 °C in the E/2M1P copolymerization, and the 2M1P incorporation was affected by the para-substituent and the polymerization temperature; complex 9 showed better 2M1P incorporation at 25 °C.
Collapse
Affiliation(s)
- Suphitchaya Kitphaitun
- Department of ChemistryTokyo Metropolitan University1-1 Minami Osawa, HachiojiTokyo192-0397Japan
| | - Qing Yan
- Department of ChemistryTokyo Metropolitan University1-1 Minami Osawa, HachiojiTokyo192-0397Japan
| | - Kotohiro Nomura
- Department of ChemistryTokyo Metropolitan University1-1 Minami Osawa, HachiojiTokyo192-0397Japan
| |
Collapse
|
7
|
Białek M, Fryga J. Homopolymerization of styrenic monomers and their copolymerization with ethylene using group 4
non‐metallocene
catalysts. J Appl Polym Sci 2020. [DOI: 10.1002/app.49349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | - Julia Fryga
- Institute of ChemistryUniversity of Opole Opole Poland
| |
Collapse
|
8
|
Nomura K, Nagai G, Nasr A, Tsutsumi K, Kawamoto Y, Koide K, Tamm M. Synthesis of Half-Titanocenes Containing Anionic N-Heterocyclic Carbenes That Contain a Weakly Coordinating Borate Moiety, Cp′TiX2(WCA-NHC), and Their Use as Catalysts for Ethylene (Co)polymerization. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00841] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Go Nagai
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Alexandre Nasr
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Ken Tsutsumi
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Yuta Kawamoto
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Koji Koide
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| |
Collapse
|
9
|
Doddi A, Peters M, Tamm M. N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry. Chem Rev 2019; 119:6994-7112. [PMID: 30983327 DOI: 10.1021/acs.chemrev.8b00791] [Citation(s) in RCA: 302] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
N-Heterocyclic carbenes (NHC) are nowadays ubiquitous and indispensable in many research fields, and it is not possible to imagine modern transition metal and main group element chemistry without the plethora of available NHCs with tailor-made electronic and steric properties. While their suitability to act as strong ligands toward transition metals has led to numerous applications of NHC complexes in homogeneous catalysis, their strong σ-donating and adaptable π-accepting abilities have also contributed to an impressive vitalization of main group chemistry with the isolation and characterization of NHC adducts of almost any element. Formally, NHC coordination to Lewis acids affords a transfer of nucleophilicity from the carbene carbon atom to the attached exocyclic moiety, and low-valent and low-coordinate adducts of the p-block elements with available lone pairs and/or polarized carbon-element π-bonds are able to act themselves as Lewis basic donor ligands toward transition metals. Accordingly, the availability of a large number of novel NHC adducts has not only produced new varieties of already existing ligand classes but has also allowed establishment of numerous complexes with unusual and often unprecedented element-metal bonds. This review aims at summarizing this development comprehensively and covers the usage of N-heterocyclic carbene adducts of the p-block elements as ligands in transition metal chemistry.
Collapse
Affiliation(s)
- Adinarayana Doddi
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| | - Marius Peters
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| |
Collapse
|
10
|
Naktode K, Das S, Nayek HP, Panda TK. Reactivity of titanium imidazolin-2-iminato complexes with 2,6-diisopropylaniline and 2-{(2,6-diisopropylphenyl)-iminomethyl}pyrrole. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1544705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Kishor Naktode
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India
- Department of Chemistry, Nevjabai Hitkarini College Bramhapuri, Chandrapur, India
| | - Suman Das
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian Institute of Technology (ISM), Dhanbad, India
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, India
| |
Collapse
|
11
|
Li M, Cai Z, Eisen MS. Neutral Nickel(II) Complexes Bearing Aryloxide Imidazolin-2-imine Ligands for Efficient Copolymerization of Norbornene and Polar Monomers. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00752] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mingyuan Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
| | - Moris S. Eisen
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| |
Collapse
|
12
|
Li M, Shu X, Cai Z, Eisen MS. Synthesis, Structures, and Norbornene Polymerization Behavior of Neutral Nickel(II) and Palladium(II) Complexes Bearing Aryloxide Imidazolidin-2-imine Ligands. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00059] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mingyuan Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
| | - Xin Shu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
| | - Zhengguo Cai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People’s Republic of China
| | - Moris S. Eisen
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 32000, Israel
| |
Collapse
|
13
|
Zhang ZQ, Qu JT, Zhang S, Miao QP, Wu YX. Ethylene/propylene copolymerization catalyzed by half-titanocenes containing monodentate anionic nitrogen ligands: effect of ligands on catalytic behaviour and structure of copolymers. Polym Chem 2018. [DOI: 10.1039/c7py01807j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ethylene–propylene copolymers with high molecular weight, nearly random sequence distribution and high propylene content could be synthesized by a novel T6/TIBA/MMAO catalytic system.
Collapse
Affiliation(s)
- Zhi-Qian Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Jun-Teng Qu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Shu Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Qiu-Ping Miao
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yi-Xian Wu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| |
Collapse
|
14
|
Design of Efficient Molecular Catalysts for Synthesis of Cyclic Olefin Copolymers (COC) by Copolymerization of Ethylene and α-Olefins with Norbornene or Tetracyclododecene. Catalysts 2016. [DOI: 10.3390/catal6110175] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
15
|
Shoken D, Shimon LJW, Tamm M, Eisen MS. Synthesis of Imidazolin-2-iminato Titanium Complexes Containing Aryloxo Ligands and Their Catalytic Performance in the Polymerization of α-Olefins. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00117] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dana Shoken
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Technion City, 32000 Haifa, Israel
| | - Linda J. W. Shimon
- Department
of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Matthias Tamm
- Institut
für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich
Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Technion City, 32000 Haifa, Israel
| |
Collapse
|
16
|
Naktode K, Das S, Bhattacharjee J, Nayek HP, Panda TK. Imidazolin-2-iminato Ligand-Supported Titanium Complexes as Catalysts for the Synthesis of Urea Derivatives. Inorg Chem 2016; 55:1142-53. [PMID: 26789927 DOI: 10.1021/acs.inorgchem.5b02302] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of tetrakis(dimethylamido)titanium(IV) [Ti(NMe2)4] with three different imidazolin-2-imines (Im(R)NH; R = tert-butyl (tBu), mesityl (Mes), and 2,6-diisopropylphenyl (Dipp)) afforded the corresponding titanium imidazolin-2-iminato complexes [(Im(R)N)Ti(NMe2)3] (R = tBu, 1a; R = Mes, 1b; R = Dipp, 1c). Treatment of complex 1a with two different carbodiimides [R'N═C═NR'; R' = cyclohexyl (Cy) and isopropyl (iPr)] resulted in the formation of imidazolin-2-iminato titanium mono(guanidinate) complex of the type [(Im(R)N)Ti(R'NC(NMe2)NR') (NMe2)2 (R' = iPr; R = tBu (2a), R = Dipp (2c); R' = Cy, R = tBu (3a)], as yellow solid in 94% yield. However, a similar reaction of 1b and 1c with 2 equiv of phenyl isocyanates at ambient temperature resulted in the formation of corresponding titanium bis(ureate) complexes [(Im(R)N)Ti{κ(2)-OC(NMe2)NPh}2(NMe2)] (R = Mes, 4b and R = Dipp, 4c). Three equivalents of phenyl isothiocyanate reacted with complex 1c to afford respective titanium tris(thioureate) complex [(Im(Dipp)N)Ti{κ(2)-SC(NMe2)NPh}2{κ(1)-SC(NMe2)NPh}] (6c). The molecular structures of 1a-c, 2a, 2c, 3a, 4c, and 6c were established by X-ray diffraction analyses, and, from the solid-state structures of 1a-c, 2a, 2c, 3a, 4c, and 6c, it was confirmed that the imidazolin-2-iminato titanium bond in each case is very short and possesses a multiple-bonding character. The imidazolin-2-iminato titanium complex 1c was utilized as a precatalyst for the addition of amine N-H bond to phenyl isocyanate. High yields of the corresponding urea derivatives were achieved under mild conditions. The mechanistic study of the aforementioned catalytic reaction was performed, and the active catalyst complex 7b was isolated using 2 equiv of iminopyrrole [2-(2,6-iPr2C6H3N═CH)C4H3NH] and the complex 4b. The molecular structure of 7b was thereafter established.
Collapse
Affiliation(s)
- Kishor Naktode
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Suman Das
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian School of Mines , Dhanbad, 826004 Jharkhand, India
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad , Kandi Sangareddy, 502 285 Telangana, India
| |
Collapse
|
17
|
Synthesis and structural analysis of half-titanocenes containing 1,3-imidazolidin-2-iminato ligands: Effect of ligand substituents in ethylene (co)polymerization. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.04.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
18
|
Group 4 metal complexes for homogeneous olefin polymerisation: a short tutorial review. APPLIED PETROCHEMICAL RESEARCH 2015. [DOI: 10.1007/s13203-015-0105-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
19
|
Naktode K, Bhattacharjee J, Nayek HP, Panda TK. Imidazol-2-ylidene-N′-phenylureate ligands in alkali and alkaline earth metal coordination spheres – heterocubane core to polymeric structural motif formation. Dalton Trans 2015; 44:7458-69. [DOI: 10.1039/c5dt00490j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic and structural details of imidazol-2-ylidene-N′-phenylureate ligand supported two potassium complexes with a hetero-cubane K4O4 core and a polymeric structure, along with a mixed metal Ca–K complex are presented.
Collapse
Affiliation(s)
- Kishor Naktode
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Yeddumailaram 502205
- India
| | - Jayeeta Bhattacharjee
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Yeddumailaram 502205
- India
| | - Hari Pada Nayek
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad
- India
| | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Yeddumailaram 502205
- India
| |
Collapse
|
20
|
Karmel ISR, Khononov M, Tamm M, Eisen MS. Uranium-mediated ring-opening polymerization of ε-caprolactone: a comparative study. Catal Sci Technol 2015. [DOI: 10.1039/c5cy01162k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This study shows and compares the catalytic activity and the mechanism of the uranium complexes [(ImDippN)2U(NMeEt)2] (3), [(C5Me5)2U(NMe2)2] (4) and [(C5Me5)2U(NCMePh)2] (5) in the ring-opening polymerization of ε-caprolactone, among which the bis(imidazolin-2-iminato) uranium complex3displayed the highest catalytic activity.
Collapse
Affiliation(s)
- Isabell S. R. Karmel
- Schulich Faculty of Chemistry
- Institute of Catalysis Science and Technology
- Technion – Israel Institute of Technology
- Technion City
- Haifa
| | - Maxim Khononov
- Schulich Faculty of Chemistry
- Institute of Catalysis Science and Technology
- Technion – Israel Institute of Technology
- Technion City
- Haifa
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie
- Technische Universität Braunschweig
- 38106 Braunschweig
- Germany
| | - Moris S. Eisen
- Schulich Faculty of Chemistry
- Institute of Catalysis Science and Technology
- Technion – Israel Institute of Technology
- Technion City
- Haifa
| |
Collapse
|
21
|
Nomura K, Patamma S, Matsuda H, Katao S, Tsutsumi K, Fukuda H. Synthesis of half-titanocenes containing 1,3-imidazolidin-2-iminato ligands of type, Cp*TiCl2[1,3-R2(CH2N)2CN]: highly active catalyst precursors in ethylene (co)polymerisation. RSC Adv 2015. [DOI: 10.1039/c5ra11402k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cp*TiCl2[1,3-(2,6-Me2C6H3)2(CH2N)2CN] showed remarkable catalytic activities for ethylene/1-hexene copolymerisation with efficient comonomer incorporation (ex. activity 1 750 000 kg-polymer per mol-Ti per h).
Collapse
Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
- Graduate School of Materials Science
| | - Srisuda Patamma
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hideshi Matsuda
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Shohei Katao
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| | - Ken Tsutsumi
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Hiroya Fukuda
- Graduate School of Materials Science
- Nara Institute of Science and Technology
- Ikoma
- Japan
| |
Collapse
|
22
|
Nomura K, Bahuleyan BK, Tsutsumi K, Igarashi A. Synthesis of (Imido)vanadium(V) Alkyl and Alkylidene Complexes Containing Imidazolidin-2-iminato Ligands: Effect of Imido Ligand on ROMP and 1,2-C–H Bond Activation of Benzene. Organometallics 2014. [DOI: 10.1021/om500986m] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Bijal Kottukkal Bahuleyan
- Department of Chemistry, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Ken Tsutsumi
- Department of Chemistry, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Atsushi Igarashi
- Department of Chemistry, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| |
Collapse
|
23
|
Doddi A, Bockfeld D, Bannenberg T, Jones PG, Tamm M. N-Heterocyclic Carbene-Phosphinidyne Transition Metal Complexes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408354] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
24
|
Doddi A, Bockfeld D, Bannenberg T, Jones PG, Tamm M. N-Heterocyclic Carbene-Phosphinidyne Transition Metal Complexes. Angew Chem Int Ed Engl 2014; 53:13568-72. [DOI: 10.1002/anie.201408354] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Indexed: 11/11/2022]
|
25
|
Volbeda J, Jones PG, Tamm M. Preparation of chiral imidazolin-2-imine ligands and their application in ruthenium-catalyzed transfer hydrogenation. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
26
|
Wu X, Tamm M. Transition metal complexes supported by highly basic imidazolin-2-iminato and imidazolin-2-imine N-donor ligands. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.10.007] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Nomura K, Bahuleyan BK, Zhang S, Veeresha Sharma PM, Katao S, Igarashi A, Inagaki A, Tamm M. Synthesis and Structural Analysis of (Imido)vanadium(V) Dichloride Complexes Containing Imidazolin-2-iminato- and Imidazolidin-2-iminato Ligands, and their Use as Catalyst Precursors for Ethylene (Co)polymerization. Inorg Chem 2013; 53:607-23. [DOI: 10.1021/ic402747d] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Kotohiro Nomura
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
- Graduate
School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
| | - Bijal Kottukkal Bahuleyan
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Shu Zhang
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
- Graduate
School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
| | | | - Shohei Katao
- Graduate
School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
| | - Atsushi Igarashi
- Department
of Chemistry, Tokyo Metropolitan University, Minami-Osawa 1-1, Hachioji, Tokyo 192-0397, Japan
| | - Akiko Inagaki
- Graduate
School of Materials Science, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
| | - Matthias Tamm
- Institut
für
Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, 38106 Braunschweig, Germany
| |
Collapse
|
28
|
Klosin J, Fontaine PP, Figueroa R, McCann SD, Mort D. Preparation of New Olefin Polymerization Precatalysts by Facile Derivatization of Imino–Enamido ZrMe3 and HfMe3 Complexes. Organometallics 2013. [DOI: 10.1021/om4008339] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Philip P. Fontaine
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Ruth Figueroa
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Scott D. McCann
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| | - Darrek Mort
- Corporate R&D, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, United States
| |
Collapse
|
29
|
Dielmann F, Moore CE, Rheingold AL, Bertrand G. Crystalline, Lewis Base-Free, Cationic Phosphoranimines (Iminophosphonium Salts). J Am Chem Soc 2013; 135:14071-3. [DOI: 10.1021/ja4080979] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Fabian Dielmann
- UCSD-CNRS Joint Research
Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California−San Diego, La Jolla, California 92093-0343, United States
| | - Curtis E. Moore
- UCSD-CNRS Joint Research
Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California−San Diego, La Jolla, California 92093-0343, United States
| | - Arnold L. Rheingold
- UCSD-CNRS Joint Research
Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California−San Diego, La Jolla, California 92093-0343, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research
Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California−San Diego, La Jolla, California 92093-0343, United States
| |
Collapse
|
30
|
Shoken D, Sharma M, Botoshansky M, Tamm M, Eisen MS. Mono(imidazolin-2-iminato) Titanium Complexes for Ethylene Polymerization at Low Amounts of Methylaluminoxane. J Am Chem Soc 2013; 135:12592-5. [DOI: 10.1021/ja406925z] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dana Shoken
- Schulich Faculty of Chemistry,
Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City,
32000 Haifa, Israel
| | - Manab Sharma
- Schulich Faculty of Chemistry,
Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City,
32000 Haifa, Israel
| | - Mark Botoshansky
- Schulich Faculty of Chemistry,
Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City,
32000 Haifa, Israel
| | - Matthias Tamm
- Institut
für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Moris S. Eisen
- Schulich Faculty of Chemistry,
Institute of Catalysis Science and Technology, Technion − Israel Institute of Technology, Technion City,
32000 Haifa, Israel
| |
Collapse
|
31
|
Half-Titanocenes Containing Anionic Ancillary Donor Ligands: Effective Catalyst Precursors for Ethylene/Styrene Copolymerization. Catalysts 2013. [DOI: 10.3390/catal3010157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|