1
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Atta S, Mandal A, Saha R, Majumdar A. Reduction of nitrite to nitric oxide and generation of reactive chalcogen species by mononuclear Fe(II) and Zn(II) complexes of thiolate and selenolate. Dalton Trans 2024; 53:949-965. [PMID: 38126213 DOI: 10.1039/d3dt03768a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Comparative reactivity of a series of new Zn(II) and Fe(II) compounds, [(Py2ald)M(ER)] (E = S, R = Ph: M = Zn, 1aZn; M = Fe, 1aFe; E = S, R = 2,6-Me2-C6H3: M = Zn, 1bZn; M = Fe, 1bFe; E = Se, R = Ph: M = Zn, 2Zn; M = Fe, 2Fe), and [(Py2ald)M]22+ (M = Zn, 5Zn; M = Fe, 5Fe) is presented. Compound 1aZn could react with nitrite (NO2-) to produce [(Py2ald)Zn(ONO)] (3Zn), which, upon treatment with thiols and PhSeH (proton source), could regenerate either 1aZn/5Zn and 2Zn respectively, along with the production of nitric oxide (NO) where the yield of NO increases in the order tBuSH ≪ PhCH2SH < PhSH < PhSeH. In contrast to this, 1aFe, 2Fe and 5Fe could affect the direct reduction of NO2- in the absence of protons to generate NO and [{(Py2ald)(ONO)Fe}2-μ2-O] (8Fe). Moreover, 8Fe could regenerate 5Fe and 1aFe/2Fe upon treatment with 4 and 6 equiv. of PhEH (E = S/Se), respectively, along with the generation of NO. Finally, a comparative study of the mononuclear Zn(II) and Fe(II) compounds for the transfer of the coordinated thiolate/selenolate and the generation and transfer of reactive sulfur/selenium species (RES-, E = Se, S) to a series of organic substrates has been provided.
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Affiliation(s)
- Sayan Atta
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India.
| | - Amit Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India.
| | - Rahul Saha
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India.
| | - Amit Majumdar
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, West Bengal, India.
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2
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Hood T, Lau S, Diefenbach M, Firmstone L, Mahon M, Krewald V, Webster RL. The Complex Reactivity of [(salen)Fe] 2(μ-O) with HBpin and Its Implications in Catalysis. ACS Catal 2023; 13:11841-11850. [PMID: 37671182 PMCID: PMC10476159 DOI: 10.1021/acscatal.3c02898] [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: 06/26/2023] [Revised: 08/01/2023] [Indexed: 09/07/2023]
Abstract
We report a detailed study into the method of precatalyst activation during alkyne cyclotrimerization. During these studies we have prepared a homologous series of Fe(III)-μ-oxo(salen) complexes and use a range of techniques including UV-vis, reaction monitoring studies, single crystal X-ray diffraction, NMR spectroscopy, and LIFDI mass spectrometry to provide experimental evidence for the nature of the on-cycle iron catalyst. These data infer the likelihood of ligand reduction, generating an iron(salan)-boryl complex as a key on-cycle intermediate. We use DFT studies to interrogate spin states, connecting this to experimentally identified diamagnetic and paramagnetic species. The extreme conformational flexibility of the salan system appears connected to challenges associated with crystallization of likely on-cycle species.
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Affiliation(s)
- Thomas
M. Hood
- Department
of Chemistry, University of Bath, Claverton Down, Bath, United Kingdom BA2 7AY
| | - Samantha Lau
- Department
of Chemistry, University of Bath, Claverton Down, Bath, United Kingdom BA2 7AY
| | - Martin Diefenbach
- Department
of Chemistry, TU Darmstadt, Peter-Grünberg-Str. 4, 64287 Darmstadt, Germany
| | - Leah Firmstone
- Department
of Chemistry, University of Bath, Claverton Down, Bath, United Kingdom BA2 7AY
| | - Mary Mahon
- Department
of Chemistry, University of Bath, Claverton Down, Bath, United Kingdom BA2 7AY
| | - Vera Krewald
- Department
of Chemistry, TU Darmstadt, Peter-Grünberg-Str. 4, 64287 Darmstadt, Germany
| | - Ruth L. Webster
- Department
of Chemistry, University of Bath, Claverton Down, Bath, United Kingdom BA2 7AY
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3
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Zars E, Gravogl L, Gau MR, Carroll PJ, Meyer K, Mindiola DJ. Isostructural bridging diferrous chalcogenide cores [Fe II(μ-E)Fe II] (E = O, S, Se, Te) with decreasing antiferromagnetic coupling down the chalcogenide series. Chem Sci 2023; 14:6770-6779. [PMID: 37350823 PMCID: PMC10283490 DOI: 10.1039/d3sc01094e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/24/2023] [Indexed: 06/24/2023] Open
Abstract
Iron compounds containing a bridging oxo or sulfido moiety are ubiquitous in biological systems, but substitution with the heavier chalcogenides selenium and tellurium, however, is much rarer, with only a few examples reported to date. Here we show that treatment of the ferrous starting material [(tBupyrpyrr2)Fe(OEt2)] (1-OEt2) (tBupyrpyrr2 = 3,5-tBu2-bis(pyrrolyl)pyridine) with phosphine chalcogenide reagents E = PR3 results in the neutral phosphine chalcogenide adduct series [(tBupyrpyrr2)Fe(EPR3)] (E = O, S, Se; R = Ph; E = Te; R = tBu) (1-E) without any electron transfer, whereas treatment of the anionic starting material [K]2[(tBupyrpyrr2)Fe2(μ-N2)] (2-N2) with the appropriate chalcogenide transfer source yields cleanly the isostructural ferrous bridging mono-chalcogenide ate complexes [K]2[(tBupyrpyrr2)Fe2(μ-E)] (2-E) (E = O, S, Se, and Te) having significant deviation in the Fe-E-Fe bridge from linear in the case of E = O to more acute for the heaviest chalcogenide. All bridging chalcogenide complexes were analyzed using a variety of spectroscopic techniques, including 1H NMR, UV-Vis electronic absorbtion, and 57Fe Mössbauer. The spin-state and degree of communication between the two ferrous ions were probed via SQUID magnetometry, where it was found that all iron centers were high-spin (S = 2) FeII, with magnetic exchange coupling between the FeII ions. Magnetic studies established that antiferromagnetic coupling between the ferrous ions decreases as the identity of the chalcogen is tuned from O to the heaviest congener Te.
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Affiliation(s)
- Ethan Zars
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
| | - Lisa Gravogl
- Department of Chemistry & Pharmacy, Friedrich-Alexander-Universität Erlangen - Nürnberg (FAU) Egerlandstr. 1 91058 Erlangen Bavaria Germany
| | - Michael R Gau
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
| | - Patrick J Carroll
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
| | - Karsten Meyer
- Department of Chemistry & Pharmacy, Friedrich-Alexander-Universität Erlangen - Nürnberg (FAU) Egerlandstr. 1 91058 Erlangen Bavaria Germany
| | - Daniel J Mindiola
- Department of Chemistry, University of Pennsylvania 231 S 34th St Philadelphia PA 19104 USA
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4
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Brandolese A, Kleij AW. Catalyst Engineering Empowers the Creation of Biomass-Derived Polyesters and Polycarbonates. Acc Chem Res 2022; 55:1634-1645. [PMID: 35648973 DOI: 10.1021/acs.accounts.2c00204] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
ConspectusThe introduction of circular principles in chemical manufacturing will drastically change the way everyday plastics are produced, thereby affecting several aspects of the respective value chains in terms of raw feedstock, recyclability, and cost. The ultimate aim is to ensure a paradigm shift toward plastic-based (consumer) materials that overall can offer a more attractive and sustainable carbon footprint, which is an important requisite from a societal, political, and eventually economical point of view. To realize this important milestone, it is vitally important to control the polymerization processes associated with the creation of novel sustainable materials. In this respect, we realized that expanding the portfolio of biomass-derived monomers may indeed create an impetus for atom circularity; however, the often sterically congested nature of biomass-derived monomers minimizes the ability of previously developed catalysts to activate and transform these precursors. Our motivation was thus spurred by an apparent lack of catalysts suitable for addressing the conversion of such biomonomers, as we realized the potential that new catalytic processes could have to advance and contribute to the development of sustainable materials produced from polycarbonates and polyesters. These two classes of polymers represent crucial ingredients of important and large-scale consumer products and are therefore ideal fits for implementing new catalytic protocols that enable a gradual transition to plastic materials with an improved carbon footprint.When we started our research expedition, the field was dominated by metal catalysts that incorporated preferred, and in some cases even privileged, ligand backbones (such as salens) able to mediate both ring-opening and ring-opening copolymerization manifolds. One major drawback of these aforementioned catalysts is their rather rigid nature, a feature that reduces their ability to act as adaptive systems, especially in cases where bulky monomers are involved. While our initial focus was on the utilization of sustainable metal salen complexes (M = Zn, Fe) for the activation of small cyclic ethers, which are privileged monomers for polyester and polycarbonate production, we were rapidly confronted with severe limitations related to their inability to activate a wider range of complex epoxides and oxetanes, which was imparted by the planar coordination geometry of the salen ligand in most of its applied metal complexes. In our quest to find a catalytically more effective metal complex with the ability to electronically and sterically tune its substrate-binding and substrate-activation potential, we identified aminotriphenolates as structurally versatile, easily accessible, and scalable ligands for various earth-abundant metal cations. Moreover, the ligand backbone allows for switchable coordination environments around the metal centers, thus offering the necessary adaptation in substrate activation events.This Account describes how Al(III)- and Fe(III)-centered aminotriphenolates have conquered a prominent position as catalyst components in the synthesis of new biobased polyester and polycarbonate architectures, thereby changing the landscape of previously difficult to convert biomonomers, and expanding the chemical space of biobased functional polymers. With the ever-increasing influence of legislation and the restrictions placed on the use of fossil-fuel-based feedstock, the polymer industry needs viable alternatives to design materials that are greener, cost-effective, and allow for the exploration and optimization of their recycling and properties.
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Affiliation(s)
- Arianna Brandolese
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda dels Països Catalans 16, Tarragona 43007, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda dels Països Catalans 16, Tarragona 43007, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Passeig de Lluis Companys 23, Barcelona 08010, Spain
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5
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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: 11] [Impact Index Per Article: 5.5] [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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6
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Kim JH, Lee SH, Kim NH, Kang EJ. Sustainable synthesis of five-membered heterocycles using carbon dioxide and Fe-iminopyridine catalysts. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101595] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Muñoz BK, Viciano M, Godard C, Castillón S, García-Ruiz M, Blanco González MD, Claver C. Metal complexes bearing ONO ligands as highly active catalysts in carbon dioxide and epoxide coupling reactions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Paradiso V, Della Monica F, Lamparelli DH, D'Aniello S, Rieger B, Capacchione C. Dinuclear [OSSO]-Fe complexes for the reaction of CO 2 with epoxides. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00622c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Synthesis and characterization of new dinuclear iron complexes for the coupling of CO2 with epoxides. A bimetallic cooperative reaction mechanism is proposed on the basis of kinetic analyses.
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Affiliation(s)
- Veronica Paradiso
- Dipartimento di Chimica e Biologia “Adolfo Zambelli”
- Università degli Studi di Salerno
- 84084 Fisciano
- Italy
- Interuniversity Consortium Chemical Reactivity and Catalysis
| | - Francesco Della Monica
- Dipartimento di Chimica e Biologia “Adolfo Zambelli”
- Università degli Studi di Salerno
- 84084 Fisciano
- Italy
| | - David Hermann Lamparelli
- Dipartimento di Chimica e Biologia “Adolfo Zambelli”
- Università degli Studi di Salerno
- 84084 Fisciano
- Italy
- Interuniversity Consortium Chemical Reactivity and Catalysis
| | - Sara D'Aniello
- Dipartimento di Chimica e Biologia “Adolfo Zambelli”
- Università degli Studi di Salerno
- 84084 Fisciano
- Italy
- Interuniversity Consortium Chemical Reactivity and Catalysis
| | - Bernhard Rieger
- WACKER-Lehrstuhl für Makromolekulare Chemie
- Zentralinstitut für Katalyseforschung (CRC)
- Technische Universitat München
- 85747 Garching
- Germany
| | - Carmine Capacchione
- Dipartimento di Chimica e Biologia “Adolfo Zambelli”
- Università degli Studi di Salerno
- 84084 Fisciano
- Italy
- Interuniversity Consortium Chemical Reactivity and Catalysis
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9
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Cheng J, Lu C, Zhao B. Cycloaddition of carbon dioxide and epoxides catalyzed by rare earth metal complexes bearing a Trost ligand. NEW J CHEM 2021. [DOI: 10.1039/d1nj02460d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Rare earth metal complexes containing Trost ligands were used to catalyze the cycloaddition reaction of epoxides with CO2. A series of epoxides were successfully converted into the corresponding cyclic carbonates under mild conditions.
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Affiliation(s)
- Jun Cheng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Chengrong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Bei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
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10
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Andrea KA, Kerton FM. Iron-catalyzed reactions of CO2 and epoxides to yield cyclic and polycarbonates. Polym J 2020. [DOI: 10.1038/s41428-020-00395-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Della Monica F, Kleij AW. Mechanistic guidelines in nonreductive conversion of CO2: the case of cyclic carbonates. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00544d] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This perspective provides general mechanistic guidelines for the catalytic formation of cyclic organic carbonates from CO2 and cyclic ethers.
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Affiliation(s)
- Francesco Della Monica
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute for Science & Technology (BIST)
- 43007 Tarragona
- Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ)
- The Barcelona Institute for Science & Technology (BIST)
- 43007 Tarragona
- Spain
- Catalan Institute for Research and Advanced Studies (ICREA)
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12
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Driscoll OJ, Stewart JA, McKeown P, Jones MD. Salalen vs. thiolen: in the ring(-opening of epoxide and cyclic carbonate formation). NEW J CHEM 2020. [DOI: 10.1039/d0nj00725k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A range of Fe(iii)-salalen and -thiolen–chloride complexes have been prepared and are shown to be active catalysts for the selective coupling of CO2 and cyclohexene oxide (CHO).
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Affiliation(s)
| | - Jack A. Stewart
- Department of Chemistry, University of Bath
- Claverton Down
- Bath
- UK
| | - Paul McKeown
- Department of Chemistry, University of Bath
- Claverton Down
- Bath
- UK
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13
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Kim NH, Seong EY, Kim JH, Lee SH, Ahn KH, Kang EJ. Functionally-designed heteroleptic Fe-bisiminopyridine systems for the transformation of carbon dioxide. J CO2 UTIL 2019. [DOI: 10.1016/j.jcou.2019.07.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Anderson TS, Kozak CM. Ring-opening polymerization of epoxides and ring-opening copolymerization of CO2 with epoxides by a zinc amino-bis(phenolate) catalyst. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109237] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Coin G, Patra R, Clémancey M, Dubourdeaux P, Pécaut J, Lebrun C, Castro L, Maldivi P, Chardon‐Noblat S, Latour J. Fe‐Based Complexes as Styrene Aziridination Catalysts: Ligand Substitution Tunes Catalyst Activity. ChemCatChem 2019. [DOI: 10.1002/cctc.201901211] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Guillaume Coin
- University of. Grenoble Alpes CEA, CNRS, IRIG, LCBM Grenoble 38000 France
- University of Grenoble Alpes CEA, CNRS, DCM Grenoble 38000 France
- Department of Chemistry and Applied BiosciencesETH Zürich Zürich 8093 Switzerland
| | - Ranjan Patra
- University of. Grenoble Alpes CEA, CNRS, IRIG, LCBM Grenoble 38000 France
- University of Grenoble Alpes CEA, CNRS, IRIG, DIESE, SYMMES Grenoble 38000 France
- Amity Institute of Click Chemistry Research & Studies (AICCRS)Amity University Noida 201303 India
| | - Martin Clémancey
- University of. Grenoble Alpes CEA, CNRS, IRIG, LCBM Grenoble 38000 France
| | | | - Jacques Pécaut
- University of Grenoble Alpes CEA, CNRS, IRIG, DIESE, SYMMES Grenoble 38000 France
| | - Colette Lebrun
- University of Grenoble Alpes CEA, CNRS, IRIG, DIESE, SYMMES Grenoble 38000 France
| | - Ludovic Castro
- University of Grenoble Alpes CEA, CNRS, IRIG, DIESE, SYMMES Grenoble 38000 France
| | - Pascale Maldivi
- University of Grenoble Alpes CEA, CNRS, IRIG, DIESE, SYMMES Grenoble 38000 France
| | | | - Jean‐Marc Latour
- University of. Grenoble Alpes CEA, CNRS, IRIG, LCBM Grenoble 38000 France
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16
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Andrea KA, Butler ED, Brown TR, Anderson TS, Jagota D, Rose C, Lee EM, Goulding SD, Murphy JN, Kerton FM, Kozak CM. Iron Complexes for Cyclic Carbonate and Polycarbonate Formation: Selectivity Control from Ligand Design and Metal-Center Geometry. Inorg Chem 2019; 58:11231-11240. [DOI: 10.1021/acs.inorgchem.9b01909] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kori A. Andrea
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Erika D. Butler
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Tyler R. Brown
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Timothy S. Anderson
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Dakshita Jagota
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Cassidy Rose
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Emily M. Lee
- St. Kevin’s High School, 435 Blackline Road, Goulds, Newfoundland A1S 1G6, Canada
| | - Sarah D. Goulding
- Holy Heart High School, 55 Bonaventure Avenue, St. John’s, Newfoundland A1C 6N8, Canada
| | - Jennifer N. Murphy
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Francesca M. Kerton
- 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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Graziano BJ, Wile BM, Zeller M. Palladium(II) complexes of a bridging amine bis-(phenolate) ligand featuring κ 2 and κ 3 coordination modes. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2019; 75:1265-1269. [PMID: 31417804 PMCID: PMC6690448 DOI: 10.1107/s2056989019010454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 07/22/2019] [Indexed: 11/11/2022]
Abstract
Bidentate and tridentate coordination of a 2,4-di-tert-butyl-substituted bridging amine bis-(phenolate) ligand to a palladium(II) center are observed within the same crystal structure, namely di-chlorido-({6,6'-[(ethane-1,2-diylbis(methyl-aza-nedi-yl)]bis-(methyl-ene)}bis-(2,4-di-tert-butyl-phenol))palladium(II) chlorido-(2,4-di-tert-butyl-6-{[(2-{[(3,5-di-tert-butyl-2-hy-droxy-phen-yl)meth-yl](meth-yl)amino}-eth-yl)(meth-yl)amino]-meth-yl}phenolato)palladium(II) methanol 1.685-solvate 0.315-hydrate, [PdCl2(C34H56N2O2)][PdCl(C34H55N2O2)]·1.685CH3OH·0.315H2O. Both complexes exhibit a square-planar geometry, with unbound phenol moieties participating in inter-molecular hydrogen bonding with co-crystallized water and methanol. The presence of both κ2 and κ3 coordination modes arising from the same solution suggest a dynamic process in which phenol donors may coordinate or dissociate from the metal center, and offers insight into catalyst speciation throughout Pd-mediated processes. The unit cell contains di-chlorido-({6,6'-[(ethane-1,2-diylbis(methyl-aza-nedi-yl)]bis-(methyl-ene)}bis-(2,4-di-tert-butyl-phenol))palladium(II), {(L 2)PdCl2}, and chlorido-(2,4-di-tert-butyl-6-{[(2-{[(3,5-di-tert-butyl-2-hy-droxy-phen-yl)meth-yl](methyl)amino}eth-yl)(meth-yl)amino]-meth-yl}phenolato)palladium(II), {(L 2 X)PdCl}, mol-ecules as well as fractional water and methanol solvent mol-ecules.
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Affiliation(s)
- Brendan J Graziano
- Donald J. Bettinger Department of Chemistry and Biochemistry, Ohio Northern University, 525 S. Main Street, Ada, Ohio 45810, USA
| | - Bradley M Wile
- Donald J. Bettinger Department of Chemistry and Biochemistry, Ohio Northern University, 525 S. Main Street, Ada, Ohio 45810, USA
| | - Matthias Zeller
- Department of Chemistry, Purdue University, 560 Oval Dr., West Lafayette, Indiana 47907, USA
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Chen F, Zhang QC, Wei D, Bu Q, Dai B, Liu N. Highly Stereo-Controlled Synthesis of Fatty Acid-Derived Cyclic Carbonates by Using Iron(II) Complex and Nucleophilic Halide. J Org Chem 2019; 84:11407-11416. [DOI: 10.1021/acs.joc.9b01068] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Fei Chen
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Qiao-Chu Zhang
- College of Chemistry and Molecular Engineering, Center of Computational Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province 450001, People’s Republic of China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering, Center of Computational Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province 450001, People’s Republic of China
| | - Qingqing Bu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Bin Dai
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
| | - Ning Liu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, People’s Republic of China
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Driscoll OJ, Hafford-Tear CH, McKeown P, Stewart JA, Kociok-Köhn G, Mahon MF, Jones MD. The synthesis, characterisation and application of iron(iii)–acetate complexes for cyclic carbonate formation and the polymerisation of lactide. Dalton Trans 2019; 48:15049-15058. [DOI: 10.1039/c9dt03327k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cracking the whip: Simple iron(iii) acetate complexes have been applied to the catalytic cyclic carbonate formation and lactide ROP.
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