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Tang K, Li Y, Chen Y, Cui W, Lin Z, Zhang Y, Shi L. Encapsulation and Evolution of Polyynes Inside Single-Walled Carbon Nanotubes. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:966. [PMID: 38869590 PMCID: PMC11174086 DOI: 10.3390/nano14110966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 05/26/2024] [Accepted: 05/31/2024] [Indexed: 06/14/2024]
Abstract
Polyyne is an sp-hybridized linear carbon chain (LCC) with alternating single and triple carbon-carbon bonds. Polyyne is very reactive; thus, its structure can be easily damaged through a cross-linking reaction between the molecules. The longer the polyyne is, the more unstable it becomes. Therefore, it is difficult to directly synthesize long polyynes in a solvent. The encapsulation of polyynes inside carbon nanotubes not only stabilizes the molecules to avoid cross-linking reactions, but also allows a restriction reaction to occur solely at the ends of the polyynes, resulting in long LCCs. Here, by controlling the diameter of single-walled carbon nanotubes (SWCNTs), polyynes were filled with high yield below room temperature. Subsequent annealing of the filled samples promoted the reaction between the polyynes, leading to the formation of long LCCs. More importantly, single chiral (6,5) SWCNTs with high purity were used for the successful encapsulation of polyynes for the first time, and LCCs were synthesized by coalescing the polyynes in the (6,5) SWCNTs. This method holds promise for further exploration of the synthesis of property-tailored LCCs through encapsulation inside different chiral SWCNTs.
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Affiliation(s)
- Kunpeng Tang
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, Nanotechnology Research Center, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yinong Li
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China (Z.L.)
| | - Yingzhi Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, Nanotechnology Research Center, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Weili Cui
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, Nanotechnology Research Center, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zhiwei Lin
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China (Z.L.)
| | - Yifan Zhang
- Huzhou Key Laboratory of Environmental Functional Materials and Pollution Control, School of Engineering, Huzhou University, Huzhou 313000, China
| | - Lei Shi
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Basic Research Center of Excellence for Functional Molecular Engineering, Nanotechnology Research Center, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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2
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Arora A, Baksi SD, Weisbach N, Amini H, Bhuvanesh N, Gladysz JA. Monodisperse Molecular Models for the sp Carbon Allotrope Carbyne; Syntheses, Structures, and Properties of Diplatinum Polyynediyl Complexes with PtC20Pt to PtC52Pt Linkages. ACS CENTRAL SCIENCE 2023; 9:2225-2240. [PMID: 38161378 PMCID: PMC10755852 DOI: 10.1021/acscentsci.3c01090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/16/2023] [Accepted: 10/19/2023] [Indexed: 01/03/2024]
Abstract
Extended conjugated polyynes provide models for the elusive sp carbon polymer carbyne, but progress has been hampered by numerous synthetic challenges. Stabilities appear to be enhanced by bulky, electropositive transition-metal endgroups. Reactions of trans-(C6F5)(p-tol3P)2Pt(C≡C)nSiEt3 (n = 4-6, PtCxSi (x = 2n)) with n-Bu4N+F-/Me3SiCl followed by excess tetrayne H(C≡C)4SiEt3 (HC8Si) and then CuCl/TMEDA and O2 give the heterocoupling products PtCx+8Si, PtCx+16Si, and sometimes higher homologues. The PtCx+16Si species presumably arise via protodesilylation of PtCx+8Si under the reaction conditions. Chromatography allows the separation of PtC16Si, PtC24Si, and PtC32Si (from n = 4), PtC18Si and PtC26Si (n = 5), or PtC20Si and PtC28Si (n = 6). These and previously reported species are applied in similar oxidative homocouplings, affording the family of diplatinum polyynediyl complexes PtCxPt (x = 20, 24, 28, 32, 36, 40 in 96-34% yields and x = 44, 48, 52 in 22-7% yields). These are carefully characterized by 13C NMR, UV-visible, and Raman spectroscopy and other techniques, with particular attention to behavior as the Cx chain approaches the macromolecular limit and endgroup effects diminish. The crystal structures of solvates of PtC20Pt, PtC24Pt, and PtC26Si, which feature the longest sp chains structurally characterized to date, are analyzed in detail. All data support a polyyne electronic structure with a nonzero optical band gap and bond length alternation for carbyne.
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Affiliation(s)
| | | | - Nancy Weisbach
- Department of Chemistry, Texas
A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United
States
| | - Hashem Amini
- Department of Chemistry, Texas
A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United
States
| | - Nattamai Bhuvanesh
- Department of Chemistry, Texas
A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United
States
| | - John A. Gladysz
- Department of Chemistry, Texas
A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United
States
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3
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Dhindsa JS, Cotterill EL, Buguis FL, Anghel M, Boyle PD, Gilroy JB. Blending the Optical and Redox Properties of Oligoynes and Boron Difluoride Formazanates. Angew Chem Int Ed Engl 2022; 61:e202208502. [DOI: 10.1002/anie.202208502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Jasveer S. Dhindsa
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario London ON N6A 5B7 Canada
| | - Erin L. Cotterill
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario London ON N6A 5B7 Canada
| | - Francis L. Buguis
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario London ON N6A 5B7 Canada
| | - Michael Anghel
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario London ON N6A 5B7 Canada
| | - Paul D. Boyle
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario London ON N6A 5B7 Canada
| | - Joe B. Gilroy
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario London ON N6A 5B7 Canada
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4
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Dhindsa JS, Cotterrill EL, Buguis FL, Anghel M, Boyle PD, Gilroy JB. Blending the Optical and Redox Properties of Oligoynes and Boron. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jasveer S Dhindsa
- University of Western Ontario: Western University Department of Chemistry CANADA
| | - Erin L. Cotterrill
- University of Western Ontario: Western University Department of Chemistry CANADA
| | - Francis L. Buguis
- University of Western Ontario: Western University Department of Chemistry CANADA
| | - Michael Anghel
- University of Western Ontario: Western University Department of Chemistry CANADA
| | - Paul D. Boyle
- University of Western Ontario: Western University Department of Chemistry CANADA
| | - Joe B. Gilroy
- The University of Western Ontario Department of Chemistry 1151 Richmond St. N. N6A 5B7 London CANADA
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5
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Structural and electronic properties of polyyne and cumulene chains with phenylene as central aromatic group: a density functional theory study. Struct Chem 2022. [DOI: 10.1007/s11224-021-01861-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Balakrishnan A, Vijayakumar S. Highly delocalised molecular orbitals in boron-, carbon- and nitrogen-based linear chains: a DFT study. Mol Phys 2022. [DOI: 10.1080/00268976.2021.2020923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - S. Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore, India
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7
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Marchini M, Luisa A, Bergamini G, Armaroli N, Ventura B, Baroncini M, Demitri N, Iengo E, Ceroni P. Giant Shape-Persistent Tetrahedral Porphyrin System: Light-Induced Charge Separation. Chemistry 2021; 27:16250-16259. [PMID: 34431140 PMCID: PMC9293204 DOI: 10.1002/chem.202102135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Indexed: 11/11/2022]
Abstract
Tetraphenylmethane appended with four pyridylpyridinium units works as a scaffold to self‐assemble four ruthenium porphyrins in a tetrahedral shape‐persistent giant architecture. The resulting supramolecular structure has been characterised in the solid state by X‐ray single crystal analysis and in solution by various techniques. Multinuclear NMR spectroscopy confirms the 1 : 4 stoichiometry with the formation of a highly symmetric structure. The self‐assembly process can be monitored by changes of the redox potentials, as well as by modifications in the visible absorption spectrum of the ruthenium porphyrin and by a complete quenching of both the bright fluorescence of the tetracationic scaffold and the weak phosphorescence of the ruthenium porphyrin. An ultrafast photoinduced electron transfer is responsible for this quenching process. The lifetime of the resulting charge separated state (800 ps) is about four times longer in the giant supramolecular structure compared to the model 1 : 1 complex formed by the ruthenium porphyrin and a single pyridylpyridinium unit. Electron delocalization over the tetrameric pyridinium structure is likely to be responsible for this effect.
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Affiliation(s)
- Marianna Marchini
- Department of Chemistry Giacomo Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Alessandra Luisa
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127, Trieste, Italy
| | - Giacomo Bergamini
- Department of Chemistry Giacomo Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
| | - Barbara Ventura
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche (ISOF-CNR), Via P. Gobetti 101, 40129, Bologna, Italy
| | - Massimo Baroncini
- Department of Chemistry Giacomo Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy.,Dipartimento di Scienze e Tecnologie Agro-Alimentari, Università di Bologna, Viale Fanin 44, 40127, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, ISOF-CNR, Via Gobetti 101, 40129, Bologna, Italy
| | - Nicola Demitri
- Elettra-Sincrotrone Trieste, S.S. 14 Km 163.5 in Area Science Park, 34149, Basovizza-Trieste, Italy
| | - Elisabetta Iengo
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127, Trieste, Italy
| | - Paola Ceroni
- Department of Chemistry Giacomo Ciamician, University of Bologna, Via Selmi 2, 40126, Bologna, Italy
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Balakrishnan A, Shankar R, Vijayakumar S. Polyyne-metal complexes for use in molecular wire applications: A DFT insight. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Functionalized oligoynes: comparison of theoretical parameters with experimental single molecule conductance. Struct Chem 2021. [DOI: 10.1007/s11224-021-01753-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Gao Y, Walter V, Ferguson MJ, Tykwinski RR. Hierarchical Synthesis, Structure, and Photophysical Properties of Gallium- and Ruthenium-Porphyrins with Axially Bonded Azo Ligands. Chemistry 2020; 26:16712-16720. [PMID: 32706454 DOI: 10.1002/chem.202002030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/23/2020] [Indexed: 01/02/2023]
Abstract
The hierarchical synthesis of three porphyrin and four bisporphyrin derivatives is presented. This strategy relies on the incorporation of linkers based on azo moieties appended with pyridyl and/or acetylenic groups that facilitate axial coordination to Ga- and Ru-metalloporphyrins. These porphyrinic systems allow for a quantitative analysis of the effects of diamagnetic anisotropy (DA) by using 1 H NMR spectroscopic and X-ray crystallographic analyses. A simple power-law relationship between the proton chemical shift and the distance from the porphyrin core is experimentally outlined, which confirms previous theoretical predictions and shows that the limit of DA is about 2 nm. Photophysical properties of the azo-linked porphyrins are analyzed by UV/Vis spectroscopy, showing that significant cis-trans isomerization is not observed for azo ligands bound only to Ga-porphyrins. Incorporation of Ru-porphyrins to an azo ligand facilitates photoswitching behavior, but the process faces competition from decarbonylation of the Ru-porphyrin, and appreciable switching is only documented for GaL1Ru.
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Affiliation(s)
- Yueze Gao
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Vroni Walter
- Department of Chemistry and Pharmacy &, Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany
| | - Michael J Ferguson
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Rik R Tykwinski
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
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11
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The loss of endgroup effects in long pyridyl-endcapped oligoynes on the way to carbyne. Nat Chem 2020; 12:1143-1149. [DOI: 10.1038/s41557-020-0550-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 08/07/2020] [Indexed: 11/09/2022]
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12
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Haiduc I. Review. Inverse coordination. Organic nitrogen heterocycles as coordination centers. A survey of molecular topologies and systematization. Part 2. Six-membered rings. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1670349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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13
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Balakrishnan A, Shankar R, Vijayakumar S. DFT approach on stability and conductance of nine different polyyne and cumulene molecules. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1601785] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - R. Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - S. Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore, India
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14
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Walter V, Gao Y, Grzegorzek N, Krempe M, Hampel F, Jux N, Tykwinski RR. Building from Ga-Porphyrins: Synthesis of Ga-Acetylide Complexes Using Acetylenes and Polyynes. Angew Chem Int Ed Engl 2018; 58:494-498. [PMID: 30452109 DOI: 10.1002/anie.201812142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/09/2018] [Indexed: 01/11/2023]
Abstract
Multidimensional, conjugated building blocks have been formed through the axial coordination of polyynes to the central Ga atom of tetraarylporphyrins. Electron deficient pentafluorophenyl substituents in the meso-positions provide more stable σ-acetylide complexes to Ga than analogous structures with tert-butylphenyl groups. Mono-, di-, and triynes have been used, including a pyridyl endcapped diyne that allows for formation of porphyrin triads through coordination of the pyridyl ligand to a Ru porphyrin.
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Affiliation(s)
- Vroni Walter
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany
| | - Yueze Gao
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Norbert Grzegorzek
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany
| | - Maximilian Krempe
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany
| | - Norbert Jux
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany
| | - Rik R Tykwinski
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg, Nikolaus-Fiebiger Str. 10, 91058, Erlangen, Germany.,Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
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15
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Walter V, Gao Y, Grzegorzek N, Krempe M, Hampel F, Jux N, Tykwinski RR. Building from Ga-Porphyrins: Synthesis of Ga-Acetylide Complexes Using Acetylenes and Polyynes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Vroni Walter
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); University of Erlangen-Nürnberg; Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Yueze Gao
- Department of Chemistry; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| | - Norbert Grzegorzek
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); University of Erlangen-Nürnberg; Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Maximilian Krempe
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); University of Erlangen-Nürnberg; Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); University of Erlangen-Nürnberg; Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Norbert Jux
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); University of Erlangen-Nürnberg; Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Rik R. Tykwinski
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); University of Erlangen-Nürnberg; Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
- Department of Chemistry; University of Alberta; Edmonton Alberta T6G 2G2 Canada
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16
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Xu L, Jiang L, Li S, Zhang G, Zhang W, Gao Z. Reaction of FcC[triple bond, length as m-dash]CC(O)R (Fc = ferrocenyl) with Ru 3(CO) 12 leading to unexpected nitro-group reduced ruthenoles and 1,2-CO-inserted triruthenium clusters. RSC Adv 2018; 8:25268-25276. [PMID: 35539793 PMCID: PMC9082558 DOI: 10.1039/c8ra04548h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 07/06/2018] [Indexed: 12/28/2022] Open
Abstract
The reaction of Ru3(CO)12 with ferrocene-containing alkynyl ketones FcC[triple bond, length as m-dash]CC(O)R (Fc = ferrocenyl; R = Ph (1); 2-thienyl (2); 4-CH3O-Ph (3); 4-NH2-Ph (4); 4-NO2-Ph (5); ferrocenyl (6)) proceeds in toluene with the formation of triruthenium clusters (1a-6a), ruthenoles (1b-5b, 5c and 1d-5d) and unexpected 1,2-CO-inserted triruthenium clusters (1c-4c). 1a-6a were isolated from the reaction of Ru3(CO)12 with one equivalent of 1-6, respectively. Ruthenoles 1b-5b, 5c and 1d-5d were collected by adding 1-5 to the corresponding 1a-5a in a molar ratio of 1 : 1, respectively. Unexpectedly, the nitro group in one of the two phenyl rings in both 5c and 5d molecules was reduced to an amino group, while their ruthenole skeletons are retained. When 1-4 were added to the corresponding 1a-4a in a molar ratio of 1 : 1, respectively, the unusual triruthenium clusters (1c-4c) were isolated, involving 1,2-insertion of a terminal coordinated carbonyl between two C[triple bond, length as m-dash]C units of the ynone molecules. No reaction between 6a and 6 was observed. And the familiar cyclotrimerization products were not found. All new compounds were characterized by NMR, FT-IR, and MS-ESI and most of them were structurally confirmed by single crystal X-ray diffraction. The results suggested that the ferrocenyl groups in the 1,3-ynones exhibit strong electron and steric effects on the reaction process and product distribution during their reactions with Ru3(CO)12.
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Affiliation(s)
- Lei Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Liping Jiang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Shasha Li
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE/School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062 China
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17
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Xu L, Li S, Jiang L, Zhang G, Zhang W, Gao Z. Electronic and steric effects of substituents in 1,3-diphenylprop-2-yn-1-one during its reaction with Ru3(CO)12. RSC Adv 2018. [DOI: 10.1039/c7ra13626a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Electronic and steric effects of substituents of alkynyl ketones play important roles in regulating reaction pathways.
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Affiliation(s)
- Lei Xu
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE/School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- China
| | - Shasha Li
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE/School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- China
| | - Liping Jiang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE/School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE/School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- China
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE/School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry
- MOE/School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062
- China
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18
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Abstract
The buta-1,3-diyne synthon 1,4-bis(trimethylsilyl)buta-1,3-diyne (1) is an important building block for the introduction of butadiyne motifs into organic and organometallic structures. Although 1 is commonly prepared from the Hay homo-coupling of trimethylsilylacetylene (catalytic CuI/tetramethylethynylenediamine, O2, acetone), the report of a significant explosion during this preparation, likely arising from a static discharge during addition of the catalyst solution to the alkyne/acetone/O2 rich atmosphere, prompts consideration of alternative procedures. Here we report the use of the robust Navale catalyst system (CuI/N,N-dimethylaminopyridine, O2, NCMe) in the multigram-scale preparation of 1 with minimal manipulation of all-glass apparatus, greatly simplifying the process and minimising risks associated with the preparation of this useful compound.
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Pigulski B, Męcik P, Cichos J, Szafert S. Use of Stable Amine-Capped Polyynes in the Regioselective Synthesis of Push–Pull Thiophenes. J Org Chem 2017; 82:1487-1498. [DOI: 10.1021/acs.joc.6b02685] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bartłomiej Pigulski
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Patrycja Męcik
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Jakub Cichos
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Sławomir Szafert
- Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland
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Milan DC, Krempe M, Ismael AK, Movsisyan LD, Franz M, Grace I, Brooke RJ, Schwarzacher W, Higgins SJ, Anderson HL, Lambert CJ, Tykwinski RR, Nichols RJ. The single-molecule electrical conductance of a rotaxane-hexayne supramolecular assembly. NANOSCALE 2017; 9:355-361. [PMID: 27924336 DOI: 10.1039/c6nr06355a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Oligoynes are archetypical molecular wires due to their 1-D chain of conjugated carbon atoms and ability to transmit charge over long distances by coherent tunneling. However, the stability of the oligoyne can be an issue. Here we address this problem by two stabilization methods, namely sterically shielding endgroups, and rotaxination to produce an insulated molecular wire. We demonstrate the threading of a hexayne within a macrocycle to form a rotaxane and report measurements of the electrical conductance of this single supramolecular assembly within an STM break junction. The macrocycle is retained around the hexayne through the use of 3,5-diphenylpyridine stoppers at both ends of the molecular wire, which also serve as chemisorption contacts to the gold electrodes of the junction. Molecular conductance was measured for both the supramolecular assembly and also for the molecular wire in the absence of the macrocycle. The threaded macrocycle, which at room temperature is mobile along the length of the hexayne between the stoppers, has only a minimal impact on the conductance. However, the probability of molecular junction formation in a given break junction formation cycle is notably lower with the rotaxane. In seeking to understand the conductance behavior, the electronic properties of these molecular assemblies and the electrical behavior of the junctions have been investigated by using DFT-based computational methods.
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Affiliation(s)
- David C Milan
- Department of Chemistry, University of Liverpool, Crown St, Liverpool, L69 7ZD, UK.
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