1
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Wang Z, Wang Z, Yin G. Chiral SalenCr and SalanCr complexes with bulky substituents for asymmetric alternating copolymerization of cyclohexene oxide with carbon dioxide or phthalic anhydride. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Reis NV, Deacy AC, Rosetto G, Durr CB, Williams CK. Heterodinuclear Mg(II)M(II) (M=Cr, Mn, Fe, Co, Ni, Cu and Zn) Complexes for the Ring Opening Copolymerization of Carbon Dioxide/Epoxide and Anhydride/Epoxide. Chemistry 2022; 28:e202104198. [PMID: 35114048 PMCID: PMC9306976 DOI: 10.1002/chem.202104198] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Indexed: 11/07/2022]
Abstract
The catalysed ring opening copolymerizations (ROCOP) of carbon dioxide/epoxide or anhydride/epoxide are controlled polymerizations that access useful polycarbonates and polyesters. Here, a systematic investigation of a series of heterodinuclear Mg(II)M(II) complexes reveals which metal combinations are most effective. The complexes combine different first row transition metals (M(II)) from Cr(II) to Zn(II), with Mg(II); all complexes are coordinated by the same macrocyclic ancillary ligand and by two acetate co-ligands. The complex syntheses and characterization data, as well as the polymerization data, for both carbon dioxide/cyclohexene oxide (CHO) and endo-norbornene anhydride (NA)/cyclohexene oxide, are reported. The fastest catalyst for both polymerizations is Mg(II)Co(II) which shows propagation rate constants (kp ) of 34.7 mM-1 s-1 (CO2 ) and 75.3 mM-1 s-1 (NA) (100 °C). The Mg(II)Fe(II) catalyst also shows excellent performances with equivalent rates for CO2 /CHO ROCOP (kp =34.7 mM-1 s-1 ) and may be preferable in terms of metallic abundance, low cost and low toxicity. Polymerization kinetics analyses reveal that the two lead catalysts show overall second order rate laws, with zeroth order dependencies in CO2 or anhydride concentrations and first order dependencies in both catalyst and epoxide concentrations. Compared to the homodinuclear Mg(II)Mg(II) complex, nearly all the transition metal heterodinuclear complexes show synergic rate enhancements whilst maintaining high selectivity and polymerization control. These findings are relevant to the future design and optimization of copolymerization catalysts and should stimulate broader investigations of synergic heterodinuclear main group/transition metal catalysts.
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Affiliation(s)
- Natalia V Reis
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Rd, Oxford, OX1 3TA, UK
| | - Arron C Deacy
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Rd, Oxford, OX1 3TA, UK
| | - Gloria Rosetto
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Rd, Oxford, OX1 3TA, UK
| | - Christopher B Durr
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Rd, Oxford, OX1 3TA, UK
| | - Charlotte K Williams
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Rd, Oxford, OX1 3TA, UK
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3
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Yao Q, Chen Y, Wang Y, Yuan D, You H, Yao Y. Alternating copolymerization of CO2 and cyclohexene oxide initiated by rare-earth metal complexes stabilized by o-phenylenediamine-bridged tris(phenolate) ligand. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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4
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Bukowski W, Bukowska A, Sobota A, Pytel M, Bester K. Copolymerization of Phthalic Anhydride with Epoxides Catalyzed by Amine-Bis(Phenolate) Chromium(III) Complexes. Polymers (Basel) 2021; 13:polym13111785. [PMID: 34071682 PMCID: PMC8197922 DOI: 10.3390/polym13111785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022] Open
Abstract
The effect of ligand structure on the catalytic activity of amine-bis(phenolate) chromium(III) complexes in the ring-opening copolymerization of phthalic anhydride and a series epoxides was studied. Eight complexes differing in the donor-pendant group (R1) and substituents (R2) in phenolate units were examined as catalysts of the model reaction between phthalic anhydride and cyclohexane oxide in toluene. They were used individually or as a part of the binary catalytic systems with nucleophilic co-catalysts. The co-catalyst was selected from the following organic bases: PPh3, DMAP, 1-butylimidazole, or DBU. The binary catalytic systems turned out to be more active than the complexes used individually, and DMAP proved to be the best choice as a co-catalyst. When the molar ratio of [PA]:[epoxide]:[Cr]:[DMAP] = 250:250:1:1 was applied, the most active complex (R1-X = CH2NMe2, R2 = F) allowed to copolymerize phthalic anhydride with differently substituted epoxides (cyclohexene oxide, 4-vinylcyclohexene oxide, styrene oxide, phenyl glycidyl ether, propylene oxide, butylene oxide, and epichlorohydrin) within 240 min at 110 °C. The resulting polyesters were characterized by Mn up to 20.6 kg mol-1 and narrow dispersity, and they did not contain polyether units.
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Affiliation(s)
- Wiktor Bukowski
- Faculty of Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35–959 Rzeszow, Poland; (W.B.); (A.B.)
| | - Agnieszka Bukowska
- Faculty of Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35–959 Rzeszow, Poland; (W.B.); (A.B.)
| | - Aleksandra Sobota
- Doctoral School of Engineering and Technical Sciences at the Rzeszow University of Technology; 35-959 Rzeszów, Poland;
| | - Maciej Pytel
- Faculty of Mechanical Engineering and Aeronautics, Rzeszów University of Technology, Powstańców Warszawy 12, 35–959 Rzeszów, Poland;
| | - Karol Bester
- Faculty of Chemistry, Rzeszow University of Technology, Powstańców Warszawy 6, 35–959 Rzeszow, Poland; (W.B.); (A.B.)
- Correspondence: ; Tel.: +48-17-865-13-38
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5
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Elkurtehi AI, Kerton FM. Synthesis of amino-phenolate manganese complexes and their catalytic activity in carbon dioxide activation and oxidation reactions. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two manganese(III) compounds were studied as catalysts for the reaction of carbon dioxide with propylene oxide, styrene oxide, and cyclohexene oxide, and formed cyclic carbonate products selectively under solvent free conditions in the presence of an ionic co-catalyst such as TBAB or PPNCl. Variable temperature kinetic studies allowed the activation energy for propylene carbonate formation to be determined (64 kJ mol−1). The catalysts showed good stability in these reactions and overall turnover numbers (TON) of up to 6000 were observed. The complexes showed low activity for the aerobic oxidation of 4-methyoxybenzylalcohol to the corresponding aldehyde, achieving up to 40% conversion in 72 h. However, near quantitative conversion of 1,2-diphenyl-2-methoxyethanol to provide up to 90% yield of benzaldehyde could be achieved over the course of 5 days. Both complexes showed similar reactivity in the two catalytic processes, and this is likely due to the weakly coordinating nature of the pendant donor within the tetradentate ligand.
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Affiliation(s)
- Ali I. Elkurtehi
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, NL, A1B 3X7, Canada
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, NL, A1B 3X7, Canada
| | - Francesca M. Kerton
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, NL, A1B 3X7, Canada
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, NL, A1B 3X7, Canada
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6
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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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7
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Huang J, Worch JC, Dove AP, Coulembier O. Update and Challenges in Carbon Dioxide-Based Polycarbonate Synthesis. CHEMSUSCHEM 2020; 13:469-487. [PMID: 31769174 DOI: 10.1002/cssc.201902719] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Indexed: 06/10/2023]
Abstract
The utilization of carbon dioxide as a comonomer to produce polycarbonates has attracted a great deal of attention from both industrial and academic communities because it promises to replace petroleum-derived plastics and supports a sustainable environment. Significant progress in the copolymerization of cyclic ethers (e.g., epoxide, oxetane) and carbon dioxide has been made in recent decades, owing to the rapid development of catalysts. In this Review, the focus is to summarize and discuss recent advances in the development of homogeneous catalysts, including metal- and organo-based complexes, as well as the preparation of carbon dioxide-based block copolymer and functional polycarbonates.
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Affiliation(s)
- Jin Huang
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, 7000, Mons, Belgium
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Joshua C Worch
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Andrew P Dove
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Olivier Coulembier
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, 7000, Mons, Belgium
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8
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Ryu HK, Bae DY, Lim H, Lee E, Son KS. Ring-opening copolymerization of cyclic epoxide and anhydride using a five-coordinate chromium complex with a sterically demanding amino triphenolate ligand. Polym Chem 2020. [DOI: 10.1039/d0py00155d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This work describes polyester synthesis via alternating ring-opening copolymerization of epoxides and anhydrides using a trigonal bipyramidal chromium complex containing a sterically demanding ligand.
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Affiliation(s)
- Ho Kyun Ryu
- Department of Chemistry
- Chungnam National University
- Daejeon
- Republic of Korea
| | - Dae Young Bae
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
| | - Hyeongi Lim
- Department of Chemistry
- Chungnam National University
- Daejeon
- Republic of Korea
| | - Eunsung Lee
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
| | - Kyung-sun Son
- Department of Chemistry
- Chungnam National University
- Daejeon
- Republic of Korea
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9
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Ambrose K, Murphy JN, Kozak CM. Chromium Amino-bis(phenolate) Complexes as Catalysts for Ring-Opening Polymerization of Cyclohexene Oxide. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01381] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kenson Ambrose
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada A1B 3X7
| | - Jennifer N. Murphy
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada A1B 3X7
| | - Christopher M. Kozak
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland, Canada A1B 3X7
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10
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Ambrose K, Robertson KN, Kozak CM. Cobalt amino-bis(phenolate) complexes for coupling and copolymerization of epoxides with carbon dioxide. Dalton Trans 2019; 48:6248-6260. [DOI: 10.1039/c9dt00996e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Electron-withdrawing groups on phenolate donors enhance polycarbonate production from CO2 and cyclohexene oxide by Co(ii) amino-bis(phenolate) complexes.
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Affiliation(s)
- Kenson Ambrose
- Department of Chemistry
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X7
| | | | - Christopher M. Kozak
- Department of Chemistry
- Memorial University of Newfoundland
- St. John's
- Canada A1B 3X7
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11
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12
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Ni K, Paniez-Grave V, Kozak CM. Effect of Azide and Chloride Binding to Diamino-bis(phenolate) Chromium Complexes on CO2/Cyclohexene Oxide Copolymerization. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00298] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kaijie Ni
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland, A1B 3X7, Canada
| | - Valentine Paniez-Grave
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland, A1B 3X7, Canada
| | - Christopher M. Kozak
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland, A1B 3X7, Canada
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13
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Ni K, Kozak CM. Kinetic Studies of Copolymerization of Cyclohexene Oxide with CO2 by a Diamino-bis(phenolate) Chromium(III) Complex. Inorg Chem 2018; 57:3097-3106. [DOI: 10.1021/acs.inorgchem.7b02952] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kaijie Ni
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Christopher M. Kozak
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
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14
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Li CY, Su YC, Lin CH, Huang HY, Tsai CY, Lee TY, Ko BT. Synthesis and characterization of trimetallic cobalt, zinc and nickel complexes containing amine-bis(benzotriazole phenolate) ligands: efficient catalysts for coupling of carbon dioxide with epoxides. Dalton Trans 2018; 46:15399-15406. [PMID: 29077111 DOI: 10.1039/c7dt02841e] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New trimetallic cobalt, nickel and zinc complexes 1-3 coordinated by amine-bis(benzotriazole phenolate) ligands and ancillary acetate groups have been developed for the use of CO2/epoxide coupling. All complexes were structurally characterized by single crystal X-ray crystallography; tri-Co complex 1 is the first solid-state example in which three different geometrical configurations exist in the same benzotriazole phenoxide metal complex. Tri-nuclear complexes 1 and 2 with cobalt and zinc metal centers were demonstrated to be very active catalysts for cycloaddition of cyclohexene oxide with CO2 in the presence of ammonium salt co-catalysts to give cis-cyclohexene carbonate under the conditions of 80 °C and 300 psi initial CO2 pressure. Particularly, tri-cobalt complex 1 was found to efficiently couple CO2 with epoxides showing broad substrate scope, producing the corresponding cyclic organic carbonates with good activities and high selectivities. This is a successful example of catalysis for cyclic carbonate synthesis using one cobalt(ii) complex as a homogeneous catalyst.
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Affiliation(s)
- Chen-Yu Li
- Department of Chemistry, Chung Yuan Christian University, Chung-Li 32023, Taiwan
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15
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Martín C, Pizzolante A, Escudero-Adán EC, Kleij AW. Bifunctional Aminotriphenolate Complexes as One-Component Catalysts for the Ring-Opening Copolymerization of Cyclic Anhydrides and Epoxides. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201800142] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Carmen Martín
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Antonella Pizzolante
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Eduardo C. Escudero-Adán
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ); the Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institute of Research and Advanced Studies (ICREA); Pg. Lluís Companys 23 08010 Barcelona Spain
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16
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Devaine-Pressing K, Kozak CM. Mechanistic Studies of Cyclohexene Oxide/CO 2 Copolymerization by a Chromium(III) Pyridylamine-Bis(Phenolate) Complex. CHEMSUSCHEM 2017; 10:1266-1273. [PMID: 28094470 DOI: 10.1002/cssc.201601641] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 01/16/2017] [Indexed: 06/06/2023]
Abstract
Chromium(III) chlorido amine-bis(phenolate) complexes paired with nucleophilic co-catalysts are a promising family of catalysts for the copolymerization of CO2 and epoxides to selectively produce polycarbonates with a very high degree of carbonate linkages. Single-component catalyst systems can be prepared, where the neutral nucleophile, 4-dimethylaminopyridine (DMAP), is coordinated to the metal site to provide a stable octahedral CrIII complex. These complexes possess the potential for both anionic (from the chlorido ligand) or neutral (DMAP) nucleophilic epoxide ring-opening during the proposed rate-determining initiation step. Concentration effect studies support a first-order dependence of the polymerization rate on the concentration of single-component catalyst. End-group analysis of polycarbonates by MALDI-TOF MS indicate the presence of predominantly DMAP-initiated chains as well as the occurrence of chain-transfer events resulting in ether linkages, likely from the presence of cyclohexene diol formed by the reaction of cyclohexene oxide and adventitious water.
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Affiliation(s)
- Katalin Devaine-Pressing
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X7, Canada
| | - Christopher M Kozak
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X7, Canada
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17
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Elkurtehi AI, Kerton FM. Coupling Reactions of Carbon Dioxide with Epoxides Catalyzed by Vanadium Aminophenolate Complexes. CHEMSUSCHEM 2017; 10:1249-1254. [PMID: 28052581 DOI: 10.1002/cssc.201601548] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 12/18/2016] [Indexed: 06/06/2023]
Abstract
A series of vanadium compounds supported by tetradentate aminobis(phenolate) ligands were screened for catalytic reactivity in the reaction of propylene oxide (PO) with CO2 : [VO(OMe)(O2 NOBuMeMeth )], [VO(OMe)(ON2 OBuMe )], [VO(OMe)(O2 NNBuBuPy )], and [VO(OMe)(O2 NOBuBuFurf )]. They showed similar reactivities, but reaction rates were higher for [VO(OMe)(ON2 OBuMe )], which was studied in more detail. Turnover frequencies for conversion of PO over 500 h-1 were observed. Activation energies were determined experimentally through in situ IR spectroscopy for propylene carbonate (48.2 kJ mol-1 ), styrene carbonate (45.6 kJ mol-1 ), and cyclohexene carbonate (54.7 kJ mol-1 ) formation.
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Affiliation(s)
- Ali I Elkurtehi
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, A1B 3X7, Canada
| | - Francesca M Kerton
- Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, A1B 3X7, Canada
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18
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Martín C, Kleij AW. Terpolymers Derived from Limonene Oxide and Carbon Dioxide: Access to Cross-Linked Polycarbonates with Improved Thermal Properties. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01449] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Carmen Martín
- Institute of Chemical Research of Catalonia
(ICIQ), Barcelona Institute of Science and Technology, Av. Països
Catalans 16, 43007 Tarragona, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia
(ICIQ), Barcelona Institute of Science and Technology, Av. Països
Catalans 16, 43007 Tarragona, Spain
- Catalan Institute of Research and Advanced
Studies (ICREA), Pg. Lluís Companys
23, 08010 Barcelona, Spain
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19
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Cui M, Qian Q, He Z, Zhang Z, Ma J, Wu T, Yang G, Han B. Bromide promoted hydrogenation of CO 2 to higher alcohols using Ru-Co homogeneous catalyst. Chem Sci 2016; 7:5200-5205. [PMID: 30155170 PMCID: PMC6020613 DOI: 10.1039/c6sc01314g] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 04/17/2016] [Indexed: 11/21/2022] Open
Abstract
Iodides are commonly used promoters in C2+OH synthesis from CO2/CO hydrogenation. Here we report the highly efficient synthesis of C2+OH from CO2 hydrogenation over a Ru3(CO)12-Co4(CO)12 bimetallic catalyst with bis(triphenylphosphoranylidene)ammonium chloride (PPNCl) as the cocatalyst and LiBr as the promoter. Methanol, ethanol, propanol and isobutanol were formed at milder conditions. The catalytic system had a much better overall performance than those of reported iodide promoted systems because PPNCl and LiBr cooperated very well in accelerating the reaction. LiBr enhanced the activity and PPNCl improved the selectivity, and thus both the activity and selectivity were very high when both of them were used simultaneously. In addition, the catalyst could be reused for at least five cycles without an obvious change of catalytic performance.
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Affiliation(s)
- Meng Cui
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Qingli Qian
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
| | - Zhenhong He
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
| | - Zhaofu Zhang
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
| | - Jun Ma
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
| | - Tianbin Wu
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
| | - Guanying Yang
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences , CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics , Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , China . ; ; Tel: +86-10-62562821
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20
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Bailey GA, Fogg DE. Confronting Neutrality: Maximizing Success in the Analysis of Transition-Metal Catalysts by MALDI Mass Spectrometry. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01105] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Gwendolyn A. Bailey
- Center for Catalysis Research & Innovation and Department of Chemistry and Biological Sciences, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
| | - Deryn E. Fogg
- Center for Catalysis Research & Innovation and Department of Chemistry and Biological Sciences, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
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21
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Martínez J, Castro-Osma JA, Lara-Sánchez A, Otero A, Fernández-Baeza J, Tejeda J, Sánchez-Barba LF, Rodríguez-Diéguez A. Ring-opening copolymerisation of cyclohexene oxide and carbon dioxide catalysed by scorpionate zinc complexes. Polym Chem 2016. [DOI: 10.1039/c6py01559j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New bimetallic heteroscorpionate zinc complexes have been developed and used as efficient catalysts for the synthesis of poly(cyclohexene carbonate).
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Affiliation(s)
- Javier Martínez
- Universidad de Castilla-La Mancha
- Departamento de Química Inorgánica
- Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA
- 13071-Ciudad Real
| | - José A. Castro-Osma
- Universidad de Castilla-La Mancha
- Departamento de Química Inorgánica
- Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA
- 13071-Ciudad Real
| | - Agustín Lara-Sánchez
- Universidad de Castilla-La Mancha
- Departamento de Química Inorgánica
- Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA
- 13071-Ciudad Real
| | - Antonio Otero
- Universidad de Castilla-La Mancha
- Departamento de Química Inorgánica
- Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA
- 13071-Ciudad Real
| | - Juan Fernández-Baeza
- Universidad de Castilla-La Mancha
- Departamento de Química Inorgánica
- Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA
- 13071-Ciudad Real
| | - Juan Tejeda
- Universidad de Castilla-La Mancha
- Departamento de Química Inorgánica
- Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA
- 13071-Ciudad Real
| | - Luis F. Sánchez-Barba
- Departamento de Biología y Geología
- Física y Química Inorgánica
- Universidad Rey Juan Carlos
- Móstoles
- Spain
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22
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Kilic A, Akdag S, Aytar E, Durgun M, Ulusoy M. Design, synthesis and characterization of novel dioxime ligand-based cobaloxime compounds for application in the coupling of CO2 with epoxides. NEW J CHEM 2016. [DOI: 10.1039/c6nj01223j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel dioxime-based cobaloxime complexes have been obtained by click chemistry and used as catalysts for the conversion of CO2 to a cyclic carbonate without using any solvent.
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Affiliation(s)
- Ahmet Kilic
- Harran University
- Chemistry Department
- 63190
- Osmanbey Campus
- Sanliurfa
| | - Seyithan Akdag
- Harran University
- Chemistry Department
- 63190
- Osmanbey Campus
- Sanliurfa
| | - Emine Aytar
- Harran University
- Chemistry Department
- 63190
- Osmanbey Campus
- Sanliurfa
| | - Mustafa Durgun
- Harran University
- Chemistry Department
- 63190
- Osmanbey Campus
- Sanliurfa
| | - Mahmut Ulusoy
- Mersin University
- Engineering Faculty
- Metallurgical and Materials Department
- Mersin
- Turkey
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23
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Peng J, Yang HJ, Song N, Guo CY. An effective Ni/Zn catalyst system for the chemical fixation of carbon dioxide with epoxides. J CO2 UTIL 2015. [DOI: 10.1016/j.jcou.2014.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Sun Q, Wang Y, Yuan D, Yao Y, Shen Q. Zirconium complexes stabilized by amine-bridged bis(phenolato) ligands as precatalysts for intermolecular hydroamination reactions. Dalton Trans 2015; 44:20352-60. [DOI: 10.1039/c5dt02643a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Pentacoordinate zirconium complexes 5 and 7 stabilized by amine-bridged bis(phenolato) ligands are more active than hexacoordinate complexes 1–4 in catalyzing intermolecular hydroamination reactions.
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Affiliation(s)
- Qiu Sun
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Yaorong Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Qi Shen
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
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25
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Devaine-Pressing K, Dawe LN, Kozak CM. Cyclohexene oxide/carbon dioxide copolymerization by chromium(iii) amino-bis(phenolato) complexes and MALDI-TOF MS analysis of the polycarbonates. Polym Chem 2015. [DOI: 10.1039/c5py01028d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single-component Cr(iii) catalysts for copolymerization of CO2 and cyclohexene oxide have been prepared. MALDI-TOF MS studies provide mechanistic information.
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Affiliation(s)
| | - Louise N. Dawe
- Department of Chemistry
- Memorial University of Newfoundland
- St. John's
- Canada
- C-CART X-ray Diffraction Laboratory
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26
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Kozak CM, Woods AM, Bottaro CS, Devaine-Pressing K, Ni K. A MALDI-TOF MS analysis study of the binding of 4-(N,N-dimethylamino)pyridine to amine-bis(phenolate) chromium(iii) chloride complexes: mechanistic insight into differences in catalytic activity for CO2/epoxide copolymerization. Faraday Discuss 2015; 183:31-46. [DOI: 10.1039/c5fd00046g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amine-bis(phenolato)chromium(iii) chloride complexes, [LCrCl], are capable of catalyzing the copolymerization of cyclohexene oxide with carbon dioxide to give poly(cyclohexane) carbonate. When combined with 4-(N,N-dimethylamino)pyridine (DMAP) these catalyst systems yield low molecular weight polymers with moderately narrow polydispersities. The coordination chemistry of DMAP with five amine-bis(phenolato)chromium(iii) chloride complexes was studied by matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The amine-bis(phenolato) ligands were varied in the nature of their neutral pendant donor-group and include oxygen-containing tetrahydrofurfuryl and methoxyethyl moieties, or nitrogen-containing N,N-dimethylaminoethyl or 2-pyridyl moieties. The relative abundance of mono and bis(DMAP) adducts, as well as DMAP-free ions is compared under various DMAP : Cr complex ratios. The [LCr]+ cations show the ability to bind two DMAP molecules to form six-coordinate complex ions in all cases, except when the pendant group is N,N-dimethylaminoethyl (compound 3). Even in the presence of a 4 : 1 ratio of DMAP to Cr, no ions corresponding to [L3Cr(DMAP)2]+ were observed for the complex containing the tertiary sp3-hybridized amino donor in the pendant arm. The difference in DMAP-binding ability of these compounds results in differences in catalytic activity for alternating copolymerization of CO2 and cyclohexene oxide. Kinetic investigations by infrared spectroscopy of compounds 2 and 3 show that polycarbonate formation by 3 is twice as fast as that of compound 2 and that no initiation time is observed.
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Affiliation(s)
| | - April M. Woods
- Department of Chemistry
- Memorial University of Newfoundland
- St. John's
- Canada
| | | | | | - Kaijie Ni
- Department of Chemistry
- Memorial University of Newfoundland
- St. John's
- Canada
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