1
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Meng X, Ding Z, Gao H, Ma Z, Pan L, Wang B, Li Y. Chromium Catalysts for Selective Ethylene Oligomerization Featuring Binuclear PNP Ligands. Molecules 2024; 29:2158. [PMID: 38731648 PMCID: PMC11085890 DOI: 10.3390/molecules29092158] [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: 03/19/2024] [Revised: 04/18/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
A series of novel binuclear PNP ligands based on the cyclohexyldiamine scaffold were synthesized for this study. The experimental results showed that positioning the two PNP sites at the para-positions of the cyclohexyl framework led to a significant enhancement in the catalytic activity for selective tri/tetramerization of ethylene. The PNP/Cr(acac)3/MAO(methylaluminoxane) catalytic system exhibited relatively high catalytic activity (up to 3887.7 kg·g-1·h-1) in selective ethylene oligomerization with a total selectivity of 84.5% for 1-hexene and 1-octene at 40 °C and 50 bar. The relationship between the ligand structure and ethylene oligomerization performance was further explored using density functional theory calculations.
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Affiliation(s)
| | | | | | | | | | - Bin Wang
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
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2
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Ajayi T, Lough AJ, Morris RH. Mechanochemical Synthesis of Chromium(III) Complexes Containing Bidentate PN and Tridentate P-NH-P and P-NH-P' Ligands. ACS OMEGA 2024; 9:19690-19699. [PMID: 38708235 PMCID: PMC11064035 DOI: 10.1021/acsomega.4c02076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 05/07/2024]
Abstract
Chromium(III) complexes bearing bidentate {NH2(CH2)2PPh2: PN, (S,S)-[NH2(CHPh)2PPh2]: P'N} and tridentate [Ph2P(CH2)2N(H)(CH2)2PPh2: P-NH-P, (S,S)-(iPr)2PCH2CH2N(H)CH(Ph)CH(Ph)PPh2: P-NH-P'] ligands have been synthesized using a mechanochemical approach. The complexes {cis-[Cr(PN)Cl2]Cl (1), cis-[Cr(P'N)Cl2]Cl (2), mer-Cr(P-NH-P)Cl3 (3), and mer-Cr(P-NH-P')Cl3 (4)} were obtained in high yield (95-97%) via the grinding of the respective ligands andthe solid Cr(III) ion precursor [CrCl3(THF)3] with the aid of a pestle and mortar, followed by recrystallization in acetonitrile. The isolated complexes are high spin. A single-crystal X-ray diffraction study of 2 revealed a cationic chromium complex with two P'N ligands in a cis configuration with P' trans to P' with chloride as the counteranion. The X-ray study of 4 shows a neutral Cr(III) complex with the P-NH-P' ligand in a mer configuration. The difference in molecular structures and bulkiness of the ligands influence the electronic, magnetic, and electrochemical properties of the complexes as exhibited by the bathochromic shifts in the electronic absorption peaks of the complexes and the relative increase in the magnetic moment of 3 (4.19 μβ) and 4 (4.15 μβ) above the spin only value (3.88 μβ) for a d3 electronic configuration. Complexes 1-4 were found to be inactive in the hydrogenation of an aldimine [(E)-1-(4-fluorophenyl)-N-phenylmethanimine] under a variety of activating conditions. The addition of magnesium and trimethylsilyl chloride in THF did cause hydrogenation at room temperature, but this occurred even in the absence of the chromium complex. The hydrogen in the amine product came from the THF solvent in this novel reaction, as determined by deuterium incorporation into the product when deuterated THF was used.
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Affiliation(s)
- Tomilola
J. Ajayi
- Department of Chemistry, University
of Toronto, 80 Saint George Street, Toronto M5S3H6, Ontario, Canada
| | - Alan J. Lough
- Department of Chemistry, University
of Toronto, 80 Saint George Street, Toronto M5S3H6, Ontario, Canada
| | - Robert H. Morris
- Department of Chemistry, University
of Toronto, 80 Saint George Street, Toronto M5S3H6, Ontario, Canada
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3
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Zhao X, Wang J, Liu D, Kong W, Zhang J. Chromium Ethylene Tri-/Tetramerization Catalysts Supported by Iminophosphine Ligands. ACS OMEGA 2023; 8:34549-34556. [PMID: 37780000 PMCID: PMC10536060 DOI: 10.1021/acsomega.3c03356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 08/21/2023] [Indexed: 10/03/2023]
Abstract
A new class of highly active ethylene tri-/tetramerization chromium catalysts supported by iminophosphine ligands has been studied. The impact of electronic and steric changes of these ligands on selectivity and activity has been investigated by varying P- and/or N-substituents. Upon activation with MMAO, the ligand bearing a P-cyclohexyl group displayed a high activity of 307 kg/(g Cr/h) with a high trimerization selectivity of 92.6%. Decreasing the steric hindrance of N-aryl group led to a decrease in 1-hexene selectivity (74.5%), producing more 1-octene (10.3%). X-ray diffraction analysis verifies that the ligands coordinate with the chromium center in a κ2-P,N mode.
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Affiliation(s)
- Xing Zhao
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jihe Wang
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Dongchang Liu
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Weihuan Kong
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Jun Zhang
- Key Laboratory for Advanced
Materials and Institute of Fine Chemicals, School of Chemistry &
Molecular Engineering, East China University
of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
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4
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Liu R, Liu Y, Yang W, Li X, Feng L. Chromium-Based Complexes Bearing Aminophosphine and Phosphine-Imine-Pyrryl Ligands for Selective Ethylene Tri/Tetramerization. ACS OMEGA 2023; 8:18290-18298. [PMID: 37251183 PMCID: PMC10210187 DOI: 10.1021/acsomega.3c02083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
A series of Cr-based complexes 6-10 bearing aminophosphine (P,N) ligands Ph2P-L-NH2 [L = CH2CH2 (1), L = CH2CH2CH2 (2), and L = C6H4CH2 (3)] and phosphine-imine-pyrryl (P,N,N) ligands 2-(Ph2P-L-N=CH)C4H3NH [L = CH2CH2CH2 (4) and L = C6H4CH2 (5)] were prepared, and their catalytic properties were examined for ethylene tri/tetramerization. X-ray crystallographic analysis of complex 8 indicated the κ2-P,N bidentate coordination mode at the Cr(III) center and the distorted octahedral geometry of monomeric P,N-CrCl3. Upon activation by methylaluminoxane (MAO), complexes 7-8 bearing P,N (PC3N backbone) ligands 2-3 showed good catalytic reactivity for ethylene tri/tetramerization. On the other hand, complex 6 bearing the P,N (PC2N backbone) ligand 1 was found active for non-selective ethylene oligomerization, while complexes 9-10 bearing P,N,N ligands 4-5 only produced polymerization products. In particular, the high catalytic activity of 458.2 kg/(g·Cr·h), excellent selectivity of 90.9% (1-hexene and 1-octene combined), and extremely low PE content of 0.1% were obtained with complex 7 in toluene at 45 °C and 45 bar. These results suggest that rational control of P,N and P,N,N ligand backbones, including a carbon spacer and rigidity of a carbon bridge, can lead to the high-performance catalyst for the ethylene tri/tetramerization process.
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Affiliation(s)
- Rui Liu
- State
Key Laboratory of Chemical Engineering, College of Chemical and Biological
Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
- Satellite
Chemical Co., Ltd., Jiaxing 314000, Zhejiang, P. R. China
| | - Yongqin Liu
- Jiaxing
Fangyuan Certification & Testing Co., Ltd., Jiaxing 314033, P. R. China
| | - Weidong Yang
- Satellite
Chemical Co., Ltd., Jiaxing 314000, Zhejiang, P. R. China
| | - Xin Li
- Satellite
Chemical Co., Ltd., Jiaxing 314000, Zhejiang, P. R. China
| | - Lianfang Feng
- State
Key Laboratory of Chemical Engineering, College of Chemical and Biological
Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China
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5
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Ji L, Song P, Zhou Y, Sun XL, Gao Y, Tang Y. A tridentate phenoxy-phosphine (POP) divalent chromium complex and its reactivities in olefin polymerization. Polym Chem 2023. [DOI: 10.1039/d2py01509a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We reported the synthesis and characterization of a Cr(ii) complex based on a tridentate phenoxy-phosphine ligand and studied its reactivities in ethylene and norbornene homopolymerization and ethylene copolymerization with norbornene or 1-octene.
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Affiliation(s)
- Li Ji
- Shenzhen Grubbs Institute and Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Guangdong, China
| | - Ping Song
- Shenzhen Grubbs Institute and Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Guangdong, China
| | - Youyun Zhou
- Shenzhen Grubbs Institute and Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Guangdong, China
| | - Xiu-Li Sun
- State key Laboratory of Organometallic Chemistry, Shanghai institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yanshan Gao
- State key Laboratory of Organometallic Chemistry, Shanghai institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Yong Tang
- Shenzhen Grubbs Institute and Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Guangdong, China
- State key Laboratory of Organometallic Chemistry, Shanghai institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
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6
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Ma J, Fan H, Hao B, Jiang Y, Wang L, Wang X, Zhang J, Jiang T. Asymmetric carbon-bridged diphosphine based chromium complexes for selective ethylene tri-/tetramerization with high thermal stability. J Catal 2022. [DOI: 10.1016/j.jcat.2022.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Milani JL, Casagrande OL. Chromium Complexes Supported by Phenyl Ether‐Pyrazolyl [N,O] Ligands as Catalysts for the Oligo‐ and Polymerization of Ethylene. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jorge L.S. Milani
- Laboratory of Molecular Catalysis, Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento Gonçalves, 9500 Porto Alegre RS 91501‐970 Brazil
| | - Osvaldo L. Casagrande
- Laboratory of Molecular Catalysis, Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento Gonçalves, 9500 Porto Alegre RS 91501‐970 Brazil
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8
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Makume BF, Holzapfel CW, Maumela MC, Willemse JA, van den Berg JA. Ethylene Tetramerisation: A Structure-Selectivity Correlation. Chempluschem 2020; 85:2308-2315. [PMID: 33048469 DOI: 10.1002/cplu.202000553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/25/2020] [Indexed: 11/10/2022]
Abstract
The effect of ethylene tetramerisation ligand structures on 1-octene selectivity is well studied. However, by-product formation is less understood. In this work, a range of PNP ligand structures are correlated with the full product selectivity and with catalyst activity. As steric bulk on the N-substituent increases, the product selectivity shifts from >10 % to < 3% of both C6 cyclics and C16+ by-products. 1-Octene peaks at ca. 70%. Thereafter, only 1-hexene increases. Similar selectivity changes were observed for ortho-Ph-substituted PNP ligands. The C10-14 selectivity was less affected by the ligand structure. The ligand effect on the changes in selectivity is explained mechanistically. Lastly, an increase in ligand steric bulk was found to improve catalyst activity and reduce polymer formation by an order of magnitude. It is proposed that steric bulk promotes formation of cationic catalytic species which are responsible for selective ethylene oligomerisation.
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Affiliation(s)
- Boitumelo F Makume
- Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Aucklandpark, 2006, Johannesburg, South Africa.,Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
| | - Cedric W Holzapfel
- Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Aucklandpark, 2006, Johannesburg, South Africa
| | - Munaka C Maumela
- Department of Chemical Sciences, University of Johannesburg, Kingsway Campus, Aucklandpark, 2006, Johannesburg, South Africa.,Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
| | - J Alexander Willemse
- Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
| | - Jan A van den Berg
- Group Technology, Sasol South Africa, 1 Klasie Havenga road, 1947, Sasolburg, South Africa
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9
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Ambrose K, Murphy JN, Kozak CM. Chromium Diamino-bis(phenolate) Complexes as Catalysts for the Ring-Opening Copolymerization of Cyclohexene Oxide and Carbon Dioxide. Inorg Chem 2020; 59:15375-15383. [PMID: 33012167 DOI: 10.1021/acs.inorgchem.0c02348] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Chromium diamino-bis(phenolate) complexes, CrXL [where L = 6,6'-((1,4-diazepane-1,4-diyl)bis(methylene))bis(2,4-dimethylphenolato) and X = Cl- (1), OH- (2), and N3- (3)], were prepared and characterized by MALDI-TOF MS and single-crystal X-ray diffraction. Complex 1 crystallized as two linkage isomers, specifically a green chloride-bridged dimer (1) and a pink asymmetrically bridged isomer exhibiting one chloride bridging atom and one bridging phenolate oxygen (1'). Adventitious moisture during sample handling causes the formation of hydroxide-containing complex 2. The reaction of 1 with PPNN3 (where PPN = bis(triphenylphosphine)iminium) permits the isolation of a crystalline chromium azide complex, 3, which was structurally authenticated. Complex 1 showed good activity toward the ring-opening copolymerization of cyclohexene oxide and carbon dioxide with an added chloride, azide, or 4-(dimethylamino)pyridine (DMAP) cocatalyst to give a completely alternating polycarbonate with a narrow molecular weight dispersity.
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Affiliation(s)
- Kenson Ambrose
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL Canada A1B 3X7
| | - Jennifer N Murphy
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL Canada A1B 3X7
| | - Christopher M Kozak
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL Canada A1B 3X7
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10
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Boelter SD, Davies DR, Milbrandt KA, Wilson DR, Wiltzius M, Rosen MS, Klosin J. Evaluation of Bis(phosphine) Ligands for Ethylene Oligomerization: Discovery of Alkyl Phosphines as Effective Ligands for Ethylene Tri- and Tetramerization. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00721] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Scott D. Boelter
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - Dan R. Davies
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - Kara A. Milbrandt
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - David R. Wilson
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - Molly Wiltzius
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - Mari S. Rosen
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48667, United States
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11
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Wang J, Liu J, Chen L, Lan T, Wang L. Nickel complexes based on hyperbranched bispyridylamine ligands as catalyst precursors for ethylene oligomerization. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819897579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A series of nickel complexes containing bispyridylamine ligands is synthesized and characterized by UV-Vis, FTIR, 1H NMR, ESI-MS, and elemental analysis. All nickel complexes activated with methylaluminoxane exhibited moderate activity for ethylene oligomerization (5.30 × 104 to 2.54 × 105 g/(mol·Ni·h)), producing oligomers in the range C4–C18. The effects of reaction temperature, reaction pressure, Al/Ni molar ratio, and solvent type on the catalytic activity and product selectivity are also investigated. The resulting products are mainly low-carbon olefins (C4 and C6). Under the optimized conditions, the complex with R1 = C4H9 formed by the reaction of the corresponding ligand R1 = C4H9 with NiCl2·6H2O showed a higher catalytic activity of 2.54 × 105 g/(mol·Ni·h) compared to the complex with R2 = C6H13 and R3 = C6H11 using toluene as the solvent. Moreover, the selectivity for the C4 and C6 oligomers can reach up to 82%.
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Affiliation(s)
- Jun Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Jinyi Liu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Liduo Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Tianyu Lan
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, P.R. China
| | - Libo Wang
- Daqing Chemical Research Center of Petrochemical Research Institute, Daqing, P.R. China
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12
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Wang J, Liu J, Lan T, Chen L, Wang L. Selective ethylene oligomerization bearing hyperbranched bispyridylamine chromium catalyst. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1587164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jun Wang
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Jinyi Liu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Tianyu Lan
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Liduo Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, Heilongjiang Province, China
| | - Libo Wang
- Daqing Chemical Research Center of Petrochemical Research Institute, Daqing, China
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13
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Ferreira J, Zilz R, Boeira IS, da Silva SM, Casagrande AC, Casagrande OL. Chromium complexes based on thiophene-imine ligands for ethylene oligomerization. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4697] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jorge Ferreira
- Laboratory of Molecular Catalysis, Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves, 9500 Porto Alegre RS 91501-970 Brazil
| | - Raquel Zilz
- Laboratory of Molecular Catalysis, Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves, 9500 Porto Alegre RS 91501-970 Brazil
| | - Igor S. Boeira
- Laboratory of Molecular Catalysis, Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves, 9500 Porto Alegre RS 91501-970 Brazil
| | - Sabrina M. da Silva
- Laboratory of Molecular Catalysis, Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves, 9500 Porto Alegre RS 91501-970 Brazil
| | - Adriana C.A. Casagrande
- Laboratory of Molecular Catalysis, Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves, 9500 Porto Alegre RS 91501-970 Brazil
| | - Osvaldo L. Casagrande
- Laboratory of Molecular Catalysis, Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves, 9500 Porto Alegre RS 91501-970 Brazil
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14
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Alam F, Zhang L, Wei W, Wang J, Chen Y, Dong C, Jiang T. Catalytic Systems Based on Chromium(III) Silylated-Diphosphinoamines for Selective Ethylene Tri-/Tetramerization. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02698] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fakhre Alam
- College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Le Zhang
- College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China
- Handan Key Laboratory of Organic Small Molecule Materials, Handan University, Handan 056005, China
| | - Wei Wei
- College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jiadong Wang
- College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yanhui Chen
- College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Chunhua Dong
- Handan Key Laboratory of Organic Small Molecule Materials, Handan University, Handan 056005, China
| | - Tao Jiang
- College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China
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15
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Nifant’ev IE, Vinogradov AA, Vinogradov AA, Roznyatovsky VA, Grishin YK, Ivanyuk AV, Sedov IV, Churakov AV, Ivchenko PV. 5,6-Dihydrodibenzo[c,e][1,2]azaphosphinine-Based PNP Ligands, Cr(0) Coordination, and Cr(III) Precatalysts for Ethylene Oligomerization. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00427] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- Department of Chemistry, M. V. Lomonosov Moscow University, Leninskie Gory, Moscow 119991, Russian Federation
| | - Alexander A. Vinogradov
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
| | - Alexey A. Vinogradov
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
| | - Vitaly A. Roznyatovsky
- Department of Chemistry, M. V. Lomonosov Moscow University, Leninskie Gory, Moscow 119991, Russian Federation
| | - Yuri K. Grishin
- Department of Chemistry, M. V. Lomonosov Moscow University, Leninskie Gory, Moscow 119991, Russian Federation
| | - Alexey V. Ivanyuk
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
| | - Igor V. Sedov
- Institute of Problems of Chemical Physics, Academician Semenov pr. 1, Chernogolovka, Moscow 142432, Russian Federation
| | - Andrei V. Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Leninsky pr. 31, Moscow 119991, Russian Federation
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- Department of Chemistry, M. V. Lomonosov Moscow University, Leninskie Gory, Moscow 119991, Russian Federation
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16
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17
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Schiwek CH, Vasilenko V, Wadepohl H, Gade LH. The open d-shell enforces the active space in 3d metal catalysis: highly enantioselective chromium(ii) pincer catalysed hydrosilylation of ketones. Chem Commun (Camb) 2018; 54:9139-9142. [DOI: 10.1039/c8cc05172k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A square-planar chromium precatalyst with its active space shaped by the metal centre was employed in an unprecedented enantioselective hydrosilylation of ketones.
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Affiliation(s)
| | - Vladislav Vasilenko
- Anorganisch-Chemisches Institut
- University of Heidelberg
- 69120 Heidelberg
- Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut
- University of Heidelberg
- 69120 Heidelberg
- Germany
| | - Lutz H. Gade
- Anorganisch-Chemisches Institut
- University of Heidelberg
- 69120 Heidelberg
- Germany
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18
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Hirscher NA, Agapie T. Stoichiometrically Activated Catalysts for Ethylene Tetramerization using Diphosphinoamine-Ligated Cr Tris(hydrocarbyl) Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00706] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nathanael A. Hirscher
- Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard MC
127-72, Pasadena, California 91125, United States
| | - Theodor Agapie
- Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard MC
127-72, Pasadena, California 91125, United States
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19
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Campbell R, Kennedy AR, McLellan R, Robertson SD, Sproules S, Mulvey RE. Contrasting the group 6 metal-metal bonding in sodium dichromate(ii) and sodium dimolybdate(ii) polymethyl complexes: synthetic, X-ray crystallographic and theoretical studies. Dalton Trans 2017; 46:5650-5659. [PMID: 28145549 DOI: 10.1039/c6dt04644d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Extending the class of group 6 metal-metal bonded methylate compounds supported by alkali metal counter-ions, the first sodium octamethylmolybdate(ii) complex [(TMEDA)Na]4Mo2Me8 and heptamethylchromate(ii) relations [(donor)Na]3Cr2Me7 (donor is TMEDA or TMCDA) are reported. The former was made by treating [(Et2O)Li]4Mo2Me8 with four equivalents of NaOtBu/TMEDA in ether; whereas the latter resulted from introducing TMEDA or TMCDA to ether solutions of octamethyldichromate [(Et2O)Na]4Cr2Me8. X-ray crystallography revealed [(TMEDA)Na]4Mo2Me8 is dimeric with square pyramidal Mo centres [including a short Mo-Mo interaction of 2.1403(3) Å] each with four methyl groups in a mutually eclipsed conformation. In dinuclear [(TMCDA)Na]3Cr2Me7 trigonal bi-pyramidal Cr centres each bond to three terminal methyl groups and one common Me bridge, that produces a strikingly short Cr-Cr contact of 1.9136(4) Å. Broken symmetry density functional theoretical calculations expose the multiconfigurational metal-metal bonding in these compounds with a Mo-Mo bond order of 3 computed for octamethylmolybdate(ii). This is contrasted by the single Cr-Cr bond in heptamethylchromate(ii) where the singlet ground state is derived by strong antiferromagnetic coupling between adjacent metal ions.
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Affiliation(s)
- Ross Campbell
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, G1 1XL, UK.
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20
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Liu R, Zhu K, Zhong X, Li J, Liu Z, Chen S, Zhu H. Chromium complexes bearing amidinato-phosphino ligand: synthesis, characterization, and catalytic properties of ethylene tri-/tetramerization and polymerization. Dalton Trans 2016; 45:17020-17029. [PMID: 27711770 DOI: 10.1039/c6dt03216h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An amidinato-phosphino ligand ArN[double bond, length as m-dash]C(R)NH(o-Ph2PC6H4) (Ar = 2,4,6-Me3C6H2, R = Ph (1); Ar = 2,6-iPr2C6H3, R = Ph (2); Ar = 2,6-iPr2C6H3, R = tBu (3)) was prepared. The ligand reacted with CrCl3(THF)3 to yield the N,P-chelation complex [ArNHC(R)[double bond, length as m-dash]N(o-Ph2PC6H4)]CrCl3(THF) (4-6), and the ligand's lithium salt ArN[double bond, length as m-dash]C(R)N(o-Ph2PC6H4)Li reacted with the respective CrCl3(THF)3 and CrCl2(THF)2 to give the N,N,P-chelation complexes [ArN[double bond, length as m-dash]C(R)N(o-Ph2PC6H4)]CrCl2(THF) (7-8) and {[ArN[double bond, length as m-dash]C(R)N(o-Ph2PC6H4)]Cr(μ-Cl)}2 (9-11). Complexes 1-11 were characterized by IR, NMR (for 1-3), EPR (for 4-11) spectroscopy and CHN elemental analysis, of which 3, 5, 8, and 11 were further studied by X-ray crystallography. Upon activation with an organoaluminum cocatalyst, complexes 4-6 were all catalytically active in ethylene tri-/tetramerization along with ethylene polymerization, and complexes 7-11 functioned as well but in ethylene polymerization. The correlation between the structure and the catalytic properties of the catalyst system is discussed.
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Affiliation(s)
- Rui Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
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21
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Radcliffe JE, Batsanov AS, Smith DM, Scott JA, Dyer PW, Hanton MJ. Phosphanyl Methanimine (PCN) Ligands for the Selective Trimerization/Tetramerization of Ethylene with Chromium. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02106] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James E. Radcliffe
- Centre
for Sustainable Chemical Processes, Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Andrei S. Batsanov
- Centre
for Sustainable Chemical Processes, Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - David M. Smith
- Sasol Technology
UK, Ltd., Purdie Building, North Haugh, St Andrews, Fife, KY16 9ST, United Kingdom
| | - John A. Scott
- Sasol Technology
UK, Ltd., Purdie Building, North Haugh, St Andrews, Fife, KY16 9ST, United Kingdom
| | - Philip W. Dyer
- Centre
for Sustainable Chemical Processes, Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Martin J. Hanton
- Sasol Technology
UK, Ltd., Purdie Building, North Haugh, St Andrews, Fife, KY16 9ST, United Kingdom
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22
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Pinheiro AC, Roisnel T, Kirillov E, Carpentier JF, Casagrande OL. Ethylene oligomerization promoted by chromium complexes bearing pyrrolide–imine–amine/ether tridentate ligands. Dalton Trans 2015; 44:16073-80. [DOI: 10.1039/c5dt02025e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Chromium complexes bearing pyrrolide–imino-amine/ether tridentate ligands have been synthesized and their catalytic behavior in ethylene oligomerization has been investigated. Drastic changes in selectivity have been observed upon slight variation of the MAO-to-Cr ratio.
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Affiliation(s)
- A. C. Pinheiro
- Laboratory of Molecular Catalysis
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Brazil
| | - T. Roisnel
- Institut des Sciences Chimiques de Rennes
- Centre de diffraction X
- UMR 6226 CNRS-Université de Rennes 1
- F-35042 Rennes Cedex
- France
| | - E. Kirillov
- Institut des Sciences Chimiques de Rennes
- Organometallics: Materials and Catalysis Dept
- UMR 6226 CNRS-Université de Rennes 1
- F-35042 Rennes Cedex
- France
| | - J.-F. Carpentier
- Institut des Sciences Chimiques de Rennes
- Organometallics: Materials and Catalysis Dept
- UMR 6226 CNRS-Université de Rennes 1
- F-35042 Rennes Cedex
- France
| | - Osvaldo L. Casagrande
- Laboratory of Molecular Catalysis
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Brazil
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23
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Alzamly A, Gorelsky SI, Gambarotta S, Korobkov I, Le Roy J, Murugesu M. Chromium–Chromium Interaction in a Binuclear Mixed-Valent CrI–CrII Complex. Inorg Chem 2014; 53:11492-7. [DOI: 10.1021/ic501404v] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ahmed Alzamly
- Department of Chemistry and ‡Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Serge I. Gorelsky
- Department of Chemistry and ‡Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry and ‡Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry and ‡Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Jennifer Le Roy
- Department of Chemistry and ‡Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Muralee Murugesu
- Department of Chemistry and ‡Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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24
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Gurnham J, Gambarotta S, Korobkov I, Jasinska-Walc L, Duchateau R. Chromium-Catalyzed CO2–Epoxide Copolymerization. Organometallics 2014. [DOI: 10.1021/om5005644] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Joanna Gurnham
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Lidia Jasinska-Walc
- Department of Chemistry, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Department of Polymer Technology, Chemical
Faculty, Gdansk University of Technology, G. Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - Robbert Duchateau
- Department of Chemistry, Eindhoven University of Technology,
P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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25
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Yang Y, Gurnham J, Liu B, Duchateau R, Gambarotta S, Korobkov I. Selective Ethylene Oligomerization with Chromium Complexes Bearing Pyridine–Phosphine Ligands: Influence of Ligand Structure on Catalytic Behavior. Organometallics 2014. [DOI: 10.1021/om5003683] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yun Yang
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Joanna Gurnham
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Boping Liu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Robbert Duchateau
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Sandro Gambarotta
- Department
of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- X-ray
Core facility, Faculty of Science, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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26
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Alzamly A, Gambarotta S, Korobkov I, Murugesu M, Le Roy JJH, Budzelaar PHM. Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization. Inorg Chem 2014; 53:6073-81. [PMID: 24874446 DOI: 10.1021/ic500445b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A chromium complex [2-(NHCH2PPh2)C5H4N]CrCl3·THF2 (1) of the ligand PyNHCH2PPh2 has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)3Al, an unprecedented divalent polyhydride chromium cluster μ,κ(1),κ(2),κ(3)-N,N,P-{[2-(NCH2PPh2)C5H4N]Cr(μ-H)}4[(μ-Cl)Cr(μ-Cl)Al(i-Bu)2Cl]2 (2) was obtained. The complex contains a Cr4H4 core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.
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Affiliation(s)
- Ahmed Alzamly
- Department of Chemistry, University of Ottawa , 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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27
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Jeon JY, Park JH, Park DS, Park SY, Lee CS, Go MJ, Lee J, Lee BY. Concerning the chromium precursor CrCl3(THF)3. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.03.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Alzamly A, Gambarotta S, Korobkov I. Reactivity with Alkylaluminum of a Chromium Complex of a Pyridine-Containing PNP Ligand: Redox N–P Bond Cleavage. Organometallics 2014. [DOI: 10.1021/om401129w] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ahmed Alzamly
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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29
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Suttil JA, Wasserscheid P, McGuinness DS, Gardiner MG, Evans SJ. A survey of pendant donor-functionalised (N,O) phosphine ligands for Cr-catalysed ethylene tri- and tetramerisation. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00457d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Selected phosphine-based ligands plus chromium have been found to be promising candidates for MAO-free trimerisation and tetramerisation of ethylene.
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Affiliation(s)
- James A. Suttil
- School of Physical Sciences – Chemistry
- University of Tasmania
- Hobart 7001, Australia
| | - Peter Wasserscheid
- Lehrstuhl für Chemische Reaktionstechnik
- Universität Erlangen-Nürnberg
- 91058 Erlangen, Germany
| | - David S. McGuinness
- School of Physical Sciences – Chemistry
- University of Tasmania
- Hobart 7001, Australia
| | - Michael G. Gardiner
- School of Physical Sciences – Chemistry
- University of Tasmania
- Hobart 7001, Australia
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30
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McGuinness DS, Chan B, Britovsek GJP, Yates BF. Ethylene Trimerisation with Cr-PNP Catalysts: A Theoretical Benchmarking Study and Assessment of Catalyst Oxidation State. Aust J Chem 2014. [DOI: 10.1071/ch14436] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A model for the homogeneous Cr-PNP (PNP = diphosphinoamine) ethylene trimerisation and tetramerisation catalyst system has been studied theoretically, with the aim of identifying suitable density functional theory methods for treatment of this catalyst, and evaluating the likely oxidation and spin states of the active species. Benchmarking studies involving high-level treatment reveal the difficulty of accurately calculating the thermochemistry of this system, and suggest that local density functionals, such as M06L, probably provide the best option. Density functional theory modelling of catalyst activation and the first steps of oligomerisation up until 1-hexene formation appears to favour a CrI–CrIII mechanism, involving spin surface crossing from sextet to quartet states.
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31
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Barzan C, Gianolio D, Groppo E, Lamberti C, Monteil V, Quadrelli EA, Bordiga S. The Effect of Hydrosilanes on the Active Sites of the Phillips Catalyst: The Secret for In Situ α‐Olefin Generation. Chemistry 2013; 19:17277-82. [DOI: 10.1002/chem.201303156] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Caterina Barzan
- Department of Chemistry, NIS and INSTM, University of Turin, Via Quarello 15A, 10135 Turin (Italy)
| | - Diego Gianolio
- Diamond Light Source, Harwell Science & Innovation Campus Didcot, Oxfordshire, OX11 0DE (UK)
| | - Elena Groppo
- Department of Chemistry, NIS and INSTM, University of Turin, Via Quarello 15A, 10135 Turin (Italy)
| | - Carlo Lamberti
- Department of Chemistry, NIS and INSTM, University of Turin, Via Quarello 15A, 10135 Turin (Italy)
| | - Vincent Monteil
- Laboratoire Chimie, Catalyse, Polymères et Procédés C2P2 (UMR 5265 Université Claude Bernard Lyon 1 ‐ CPE Lyon ‐ CNRS), 43 B. du 11 Novembre 1918, 69616 Villeurbanne (France)
| | - Elsje Alessandra Quadrelli
- Laboratoire Chimie, Catalyse, Polymères et Procédés C2P2 (UMR 5265 Université Claude Bernard Lyon 1 ‐ CPE Lyon ‐ CNRS), 43 B. du 11 Novembre 1918, 69616 Villeurbanne (France)
| | - Silvia Bordiga
- Department of Chemistry, NIS and INSTM, University of Turin, Via Quarello 15A, 10135 Turin (Italy)
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32
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Alzamly A, Gambarotta S, Korobkov I. Polymer-Free Ethylene Oligomerization Using a Pyridine-Based Pincer PNP-Type of Ligand. Organometallics 2013. [DOI: 10.1021/om4008828] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ahmed Alzamly
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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33
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Jacobs DL, Chan BC, O'Connor AR. N-[2-(Pyridin-2-yl)ethyl]-derivatives of methane-, benzene- and toluenesulfonamide: prospective ligands for metal coordination. Acta Crystallogr C 2013; 69:1397-401. [PMID: 24192196 DOI: 10.1107/s0108270113025341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 09/12/2013] [Indexed: 11/10/2022] Open
Abstract
The molecular and supramolecular structures are reported of N-[2-(pyridin-2-yl)ethyl]methanesulfonamide, C8H12N2O2S, (I), N-[2-(pyridin-2-yl)ethyl]benzenesulfonamide, C13H14N2O2S, (II), and N-[2-(pyridin-2-yl)ethyl]toluenesulfonamide, C14H16N2O2S, (III). Although (II) and (III) are almost structurally identical, the N(amide)-C(ethyl)-C(ethyl)-C(pyridinyl) torsion angles for (I) and (II) are more closely comparable, with magnitudes of 175.37 (15)° for (I) and 169.04 (19)° for (II). This angle decreases dramatically with an additional methyl group in the para position of the sulfonamide substituent, resulting in a value of 62.9 (2)° for (III). In each of the three compounds there is an N-H...N hydrogen bond between the sulfonamide of one molecule and the pyridine N atom of a neighbor. Compound (I) forms hydrogen-bonded dimers, (II) uses its hydrogen bonding to connect supramolecular layers, and the hydrogen bonding of (III) connects linear chains to form layers. For arene-substituted (II) and (III), the different conformations afforded by the variable dihedral angles promote intermolecular π-π stacking in the benzene-substituted structure (II), but distorted intramolecular T-shaped π-stacking in the toluene-substituted structure (III), with a centroid-to-centroid distance of 4.9296 (10) Å.
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Affiliation(s)
- Danielle L Jacobs
- Department of Chemistry, Biochemistry and Physics, Rider University, 2083 Lawrenceville Road, Lawrenceville, NJ 08648, USA
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34
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Alzamly A, Gambarotta S, Korobkov I. Synthesis, Structures, and Ethylene Oligomerization Activity of Bis(phosphanylamine)pyridine Chromium/Aluminate Complexes. Organometallics 2013. [DOI: 10.1021/om4008289] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ahmed Alzamly
- Department
of Chemistry, University of Ottawa, 10 M. Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Sandro Gambarotta
- Department
of Chemistry, University of Ottawa, 10 M. Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Ilia Korobkov
- Department
of Chemistry, University of Ottawa, 10 M. Curie, Ottawa, Ontario K1N 6N5, Canada
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35
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Yang Y, Liu Z, Liu B, Duchateau R. Selective Ethylene Tri-/Tetramerization by in Situ-Formed Chromium Catalysts Stabilized by N,P-Based Ancillary Ligand Systems. ACS Catal 2013. [DOI: 10.1021/cs4004968] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yun Yang
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Zhen Liu
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Boping Liu
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Robbert Duchateau
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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36
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Zhang J, Wang X, Zhang X, Wu W, Zhang G, Xu S, Shi M. Switchable Ethylene Tri-/Tetramerization with High Activity: Subtle Effect Presented by Backbone-Substituent of Carbon-Bridged Diphosphine Ligands. ACS Catal 2013. [DOI: 10.1021/cs400651h] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Xiao Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Xuejun Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Weijie Wu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Gengtao Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Sheng Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
- State Key
Laboratory of Organometallic Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China
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37
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Monillas WH, Young JF, Yap GPA, Theopold KH. A well-defined model system for the chromium-catalyzed selective oligomerization of ethylene. Dalton Trans 2013; 42:9198-210. [PMID: 23493916 DOI: 10.1039/c3dt00109a] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Wesley H Monillas
- Department of Chemistry and Biochemistry, Center for Catalytic Science and Technology, University of Delaware, Newark, Delaware 19716, USA
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