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Schoepff L, Monnereau L, Durot S, Jenni S, Gourlaouen C, Heitz V. A flexible bis‐Co(III) porphyrin cage as a bimetallic catalyst for the conversion of CO
2
and epoxides into cyclic carbonates. ChemCatChem 2020. [DOI: 10.1002/cctc.202001176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Laetitia Schoepff
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de chimie de Strasbourg CNRS/UMR 7177 Université de Strasbourg 4 rue Blaise Pascal 67000 Strasbourg France
| | - Laure Monnereau
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de chimie de Strasbourg CNRS/UMR 7177 Université de Strasbourg 4 rue Blaise Pascal 67000 Strasbourg France
| | - Stéphanie Durot
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de chimie de Strasbourg CNRS/UMR 7177 Université de Strasbourg 4 rue Blaise Pascal 67000 Strasbourg France
| | - Sébastien Jenni
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de chimie de Strasbourg CNRS/UMR 7177 Université de Strasbourg 4 rue Blaise Pascal 67000 Strasbourg France
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique Institut de chimie de Strasbourg CNRS/UMR 7177 Université de Strasbourg 4 rue Blaise Pascal 67000 Strasbourg France
| | - Valérie Heitz
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels Institut de chimie de Strasbourg CNRS/UMR 7177 Université de Strasbourg 4 rue Blaise Pascal 67000 Strasbourg France
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2
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Kohno Y, Yamamoto K, Tsuboyama S, Mori K. Theoretical study of chloro-α,β,γ,δ-tetraphenylporphyrinato cobalt(III) dimer reaction: A reaction path to form π cation radicals. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2019.03.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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3
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Xia W, Vagin SI, Rieger B. Regarding initial ring opening of propylene oxide in its copolymerization with CO2 catalyzed by a cobalt(III) porphyrin complex. Chemistry 2014; 20:15499-504. [PMID: 25283958 DOI: 10.1002/chem.201404147] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Indexed: 11/10/2022]
Abstract
Cobalt(III) tetraphenylporphyrin chloride (TPPCoCl) was experimentally proved to be an active catalyst for poly(propylene carbonate) production. It was chosen as a model catalyst in the present work to investigate the initiation step of propylene oxide (PO)/CO2 copolymerization, which is supposed to be the ring opening of the epoxide. Ring-opening intermediates (1-7) were detected by using (1) H NMR spectroscopy. A first-order reaction in TPPCoCl was determined. A combination of monometallic and bimetallic ring-opening pathways is proposed according to kinetics experiments. Addition of onium salts (e.g., bis(triphenylphosphine)iminium chloride, PPNCl) efficiently promoted the PO ring-opening rate. The existence of axial ligand exchange in the cobalt porphyrin complex in the presence of onium salts was suggested by analyzing collected (1) H NMR spectra.
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Affiliation(s)
- Wei Xia
- WACKER-Lehrstuhl für Makromolekulare Chemie, Technische Universität München, Lichtenbergstraße 4, 85747, Garching (Germany)
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Jiang Q, Sheng W, Tian M, Tang J, Guo C. Cobalt(II)-Porphyrin-Catalyzed Aerobic Oxidation: Oxidative Coupling of Phenols. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201595] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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5
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Cormode DP, Drew MGB, Jagessar R, Beer PD. Metalloporphyrin anion sensors: the effect of the metal centre on the anion binding properties of amide-functionalised and tetraphenyl metalloporphyrins. Dalton Trans 2008:6732-41. [PMID: 19153621 DOI: 10.1039/b807153e] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article describes the synthesis and anion binding properties of a series of 'picket fence' metalloporphyrin complexes, within which the metal centre is systematically varied. The porphyrin structure contains four amide bonds and is the same for each metal. The anion binding properties of these receptors are further contrasted with those of their tetraphenylporphyrin congeners to elucidate both the effect of the metal centre and the influence of the amide groups on the anion recognition process. Anion binding was demonstrated using UV/visible and (1)H NMR spectroscopies, electrochemistry and luminescence. The metal centre was found to be highly influential in the strength and selectivity of binding; for example, the cadmium and mercury complexes exhibited far greater affinities for anions than the zinc complexes in competitive solvents such as DMSO. The amide functionalities were found to enhance the anion binding process.
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Affiliation(s)
- David P Cormode
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, UK
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Kadish KM, Shao J, Ou Z, Frémond L, Zhan R, Burdet F, Barbe JM, Gros CP, Guilard R. Electrochemistry, Spectroelectrochemistry, Chloride Binding, and O2 Catalytic Reactions of Free-Base Porphyrin−Cobalt Corrole Dyads. Inorg Chem 2005; 44:6744-54. [PMID: 16156633 DOI: 10.1021/ic050738n] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three face-to-face linked porphyrin-corrole dyads were investigated as to their electrochemistry, spectroelectrochemistry, and chloride-binding properties in dichloromethane or benzonitrile. The same three compounds were also investigated as to their ability to catalyze the electroreduction of dioxygen in aqueous 1 M HClO4 or HCl when adsorbed on a graphite electrode. The characterized compounds are represented as (PCY)H2Co, where P = a porphyrin dianion; C = a corrole trianion; and Y = a biphenylenyl, 9,9-dimethylxanthenyl, or anthracenyl spacer, which links the two macrocycles in a face-to-face arrangement. An axial binding of one or two Cl- ligands to the cobalt center of the corrole is observed for singly and doubly oxidized (PCY)H2Co, with the exact stoichiometry of the reaction depending upon the spacer size and the concentration of Cl- added to solution. No Cl- binding occurs for the neutral or reduced forms of the dyad, which contrasts with what is seen for the monocorrole, (Me4Ph5Cor)Co, where a single Cl- ligand is added to the Co(III) corrole in PhCN. The Co(III) form of the corrole in (PCY)H2Co also appears to be the catalytically active species in the electroreduction of dioxygen, which occurs at potentials associated with the Co(IV)/Co(III) reaction, that is, 0.35 V in 1 M HClO4 as compared to 0.31-0.42 V for the same three dyads in PhCN and 0.1 M TBAP. The potential for the catalytic electroreduction of O2 in HCl shifts negatively by 60 to 70 mV as compared to E(1/2) values in 1 M HClO4, consistent with the binding of Cl- to the Co(IV) form of the corrole and its rapid dissociation after electroreduction to Co(III) at the electrode surface.
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Affiliation(s)
- Karl M Kadish
- Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA.
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7
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Sutton LR, Scheloske M, Pirner KS, Hirsch A, Guldi DM, Gisselbrecht JP. Unexpected change in charge transfer behavior in a cobalt(II) porphyrin-fullerene conjugate that stabilizes radical ion pair states. J Am Chem Soc 2004; 126:10370-81. [PMID: 15315452 DOI: 10.1021/ja048983d] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two cobalt(II) porphyrin-C(60) malonate-linked conjugates, the mono-connected Co1 and the bis-connected trans-2 isomer Co3, have been synthesized for the first time either by direct cyclopropanation with the precursor malonate Co4 or by metalation of the bisadduct H(2)3. For the investigation of the interaction between the porphyrin donor and fullerene acceptor within these dyads, electrochemical and photophysical investigations have been carried out. Compared to Zn3 and trans-2 bisadduct 7, the first reduction of the fullerene moiety within Co3 becomes easier (40 mV in dichloromethane and 20 mV in benzonitrile), indicating significant interactions between the pi-system of the fullerene and the d-orbitals of the central Co atom. Compared to the Co complexes 9, Co4, and Co1, the first oxidation of Co3 is considerably shifted to more positive potentials, if benzonitrile instead of dichloromethane is used as solvent. At the same time, the oxidation is no longer centered on the Co(II) center but on the porphyrin macrocycle, as corroborated by spectroelectrochemistry. A similar solvent dependence was observed in transient absorption spectroscopic measurements. In toluene, benzonitrile and anisole photoinduced electron transfer within Co3 leads to the formation of a charge-separated state Co(II)P.+ -C(60).- with a lifetime of 560 +/- 20 ns in benzonitrile, whereas in other solvents such as THF, nitrobenzene, ortho-diclorobenzene, and tert-butylbenzene the formation of a Co(III)P-C(60).- as transient was detected, which is, however, short-lived (860 +/- 40 ps in THF) and exhibits charge recombination dynamics that are in the Marcus inverted region. Particularly important is the fact that the electronic coupling (V) in Co(III)P-C(60).- is 18 cm(-1) substantially smaller than the V value of 313 cm(-1) in ZnP.+ -C(60).- .
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Affiliation(s)
- Liam R Sutton
- Contribution from the Institut für Organische Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, D-91054 Erlangen, Germany
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Electrocarboxylation of arylmethyl chlorides catalyzed by cobalt 6,6′-bis(2-hydroxyphenyl)-2,2′-bipyridine. J Electroanal Chem (Lausanne) 2000. [DOI: 10.1016/s0022-0728(00)00125-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Long JW, Kim IK, Murray RW. Hybrid Redox Polyethers: Molecular Melts of Metalloporphyrins. J Am Chem Soc 1997. [DOI: 10.1021/ja972081d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeffrey W. Long
- Contribution from the Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, and Wonkwang University, Iksan City, South Korea, 570-749
| | - Il Kwang Kim
- Contribution from the Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, and Wonkwang University, Iksan City, South Korea, 570-749
| | - Royce W. Murray
- Contribution from the Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, and Wonkwang University, Iksan City, South Korea, 570-749
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Choi IK, Liu Y, Wei Z, Ryan MD. Reactions of Hydroxylamine with Metal Porphyrins. Inorg Chem 1997; 36:3113-3118. [PMID: 11669965 DOI: 10.1021/ic9605783] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of hydroxylamine with a series of metal porphyrins was examined in methanol/chloroform media. The reductive nitrosylation reaction was observed for the manganese and iron porphyrins, leading to a nitrosyl complex that precipitated out of the solution in good isolatable yield (80-90%). This reaction could be used synthetically for the generation of iron and manganese porphyrin nitrosyl complexes and was particularly useful for making isotopically labeled nitrosyl complexes. On the other hand, Co(II)(TPP) and Cr(TPP)(Cl) did not react with hydroxylamine under anaerobic conditions. With trace amounts of oxygen, the reaction of Co(II)(TPP) with hydroxylamine led to the formation of a stable cobalt(III)-bis(hydroxylamine) complex. The infrared, resonance Raman, and proton NMR spectra were consistent with a cobalt(III)-bis(hydroxylamine) complex. The cyclic voltammetry and visible spectroelectrochemistry of this complex were examined. The one-electron reduction of Co(III)(TPP)(NH(2)OH)(2)(+) formed Co(II)(TPP), for which there was no evidence for the coordination of hydroxylamine. Further reduction led to Co(I)(TPP)(-), which reacted with the halogenated solvent to form a cobalt-alkyl complex. The difference in the reactivity of these four metal porphyrins with hydroxylamine correlated well with their E(1/2) values. Iron(III) and manganese(III) porphyrins were relatively easy to reduce and readily underwent the reductive nitrosylation reaction, while cobalt(II) and chromium(III) porphyrins are unreactive. The one-electron oxidation of the hydroxylamine complex with a M(III) porphyrin would be expected to oxidize the N-atom in the coordinated hydroxylamine. The oxidation of M(III)(NH(2)OH) with the loss of a proton would form M(II)(N(I)H(2)O)(+) by an internal electron transfer, which will eventually lead to M(NO). The relationship between the reductive nitrosyl reaction and the enzymatic interconversion of NO and hydroxylamine was discussed.
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Affiliation(s)
- In-Kyu Choi
- Chemistry Department, Marquette University, PO Box 1881, Milwaukee, Wisconsin 53201
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11
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Coordination aggregation of mesoaryl substituted porphyrins. J CHEM SCI 1995. [DOI: 10.1007/bf02840803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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NMR spectra of the porphyrins Part 41. A molecular mechanics and NMR investigation of steric effects in ligand complexes. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)90363-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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Huang C, Tian M, Yang Y, Guo F, Wang M. Study on the interaction of O2 with CoTPP in DMSO solution by a thin-layer spectroelectrochemical method. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0022-0728(89)87078-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Electrochemical and spectroscopic properties of dicobalt cofacial porphyrins in non-aqueous media. ACTA ACUST UNITED AC 1987. [DOI: 10.1016/0022-0728(87)80178-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Gallium(III) porphyrins: synthesis and physicochemical characteristics of halogeno gallium(III) porphyrins—X-ray crystal structure of chloro-(5,10,15,20-tetraphenylporphyrinato) gallium(III). Polyhedron 1986. [DOI: 10.1016/s0277-5387(00)81386-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Anomalous ortho effects in sterically hindered porphyrins: Tetrakis(2,6-dimethylphenyl)porphyrin and its sulfonato derivative. Chem Phys Lett 1984. [DOI: 10.1016/0009-2614(84)85135-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Abraham RJ, Bedford GR, Wright B. The NMR spectra of the porphyrins: 23—Metalloporphyrins as diamagnetic shift reagents, chemical applications. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/omr.1270211009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Gaudemer A, Gaudemer F, Merienne C. NMR evidence for planar chirality in natural porphyrins. ACTA ACUST UNITED AC 1983. [DOI: 10.1002/omr.1270210203] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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