1
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Sun B, Oakley MS, Yoshida K, Yang Y, Tommasini M, Zanchi C, Lucotti A, Ferguson MJ, Hampel F, Klobukowski M, Tykwinski RR. The Effects of Ring Strain on Cyclic Tetraaryl[5]cumulenes. Chemistry 2022; 28:e202200616. [DOI: 10.1002/chem.202200616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Bozheng Sun
- Department of Chemistry University of Alberta Edmonton AB T6G 2G2 Canada
| | - Meagan S. Oakley
- Department of Chemistry University of Alberta Edmonton AB T6G 2G2 Canada
| | - Kota Yoshida
- Department of Chemistry Graduate School of Science Kyoto University Kyoto 606-8502 Japan
| | - Yanwen Yang
- Department of Chemistry University of Alberta Edmonton AB T6G 2G2 Canada
| | - Matteo Tommasini
- Dipartimento di Chimica Materiali e Ingegneria Chimica “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Chiara Zanchi
- Dipartimento di Chimica Materiali e Ingegneria Chimica “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Andrea Lucotti
- Dipartimento di Chimica Materiali e Ingegneria Chimica “Giulio Natta” Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano Italy
| | | | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM) University of Erlangen-Nuremberg Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | | | - Rik R. Tykwinski
- Department of Chemistry University of Alberta Edmonton AB T6G 2G2 Canada
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2
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Johnson MA, Martin M, Cocq K, Ferguson M, Jux N, Tykwinski RR. Acylation of Hexaphenylbenzene for the Synthesis of [5]Cumulenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Max Martin
- FAU Erlangen Nuremberg: Friedrich-Alexander-Universitat Erlangen-Nurnberg Chemistry GERMANY
| | - Kévin Cocq
- University of Alberta Department of Chemistry CANADA
| | | | - Norbert Jux
- FAU: Friedrich-Alexander-Universitat Erlangen-Nurnberg Chemistry GERMANY
| | - Rik R. Tykwinski
- University of Alberta Department of Chemistry T6G 2G2 Edmonton CANADA
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3
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Hirao Y, Daifuku Y, Ihara K, Kubo T. Spin–Spin Interactions in One‐Dimensional Assemblies of a Cumulene‐Based Singlet Biradical. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yasukazu Hirao
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Yoko Daifuku
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Keiji Ihara
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Takashi Kubo
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
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4
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Hirao Y, Daifuku Y, Ihara K, Kubo T. Spin-Spin Interactions in One-Dimensional Assemblies of a Cumulene-Based Singlet Biradical. Angew Chem Int Ed Engl 2021; 60:21319-21326. [PMID: 34101316 DOI: 10.1002/anie.202105740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 11/09/2022]
Abstract
The synthesis of phenalenyl-endcapped [5]cumulene as a cumulene-based singlet biradical and the spin correlation changes of one-dimensional aggregates are described. The high propensity for self-aggregation of phenalenyl rings and the introduction of bulky substituents into the appropriate positions led to the formation of a one-dimensional chain assembly. Single-crystal X-ray structural analysis indicated that the bond length alternation of the cumulene chain increased with decreasing temperature, along with improved overlapping of the phenalenyl rings. Variable-temperature Raman spectroscopy and magnetic susceptibility measurements revealed that a localized spin pair within the molecule decouples at low temperatures, and a continuum spin system involving intra- and intermolecular spin-spin interactions emerges in the one-dimensional chain.
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Affiliation(s)
- Yasukazu Hirao
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Yoko Daifuku
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Keiji Ihara
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Takashi Kubo
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
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5
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Waelès P, Gauthier M, Coutrot F. Challenges and Opportunities in the Post-Synthetic Modification of Interlocked Molecules. Angew Chem Int Ed Engl 2021; 60:16778-16799. [PMID: 32894812 DOI: 10.1002/anie.202007496] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 08/24/2020] [Indexed: 12/12/2022]
Abstract
Several strategies have been successfully utilised to obtain a wide range of interlocked molecules. However, some interlocked compounds are still not obtained directly and/or efficiently from non-interlocked components because the requisites for self-assembly cannot always be enforced. To circumvent such a synthetic problem, a strategy that consists of synthesizing an isolable and storable interlocked building block in a step that precedes its modification is an appealing chemical route to more sophisticated interlocked molecules. Synthetic opportunities and challenges are closely linked to the fact that the mechanical bond might greatly affect the reactivity of a functionality of the encircled axle, but that the interlocked architecture needs to be preserved during the synthesis. Hence, the mechanical bond plays a fundamental role in the strategy employed. This Review focuses on the challenging post-synthetic modifications of interlocked molecules, sometimes through cleavage of the axle's main chain, but always with conservation of the mechanical bond.
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Affiliation(s)
- Philip Waelès
- Supramolecular Machines and ARchitectures Team, Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon, 34095, Montpellier cedex 5, France
| | - Maxime Gauthier
- Supramolecular Machines and ARchitectures Team, Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon, 34095, Montpellier cedex 5, France
| | - Frédéric Coutrot
- Supramolecular Machines and ARchitectures Team, Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, ENSCM, case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon, 34095, Montpellier cedex 5, France
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6
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Waelès P, Gauthier M, Coutrot F. Challenges and Opportunities in the Post‐Synthetic Modification of Interlocked Molecules. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202007496] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Philip Waelès
- Supramolecular Machines and ARchitectures Team Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS Université de Montpellier ENSCM case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon 34095 Montpellier cedex 5 France
| | - Maxime Gauthier
- Supramolecular Machines and ARchitectures Team Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS Université de Montpellier ENSCM case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon 34095 Montpellier cedex 5 France
| | - Frédéric Coutrot
- Supramolecular Machines and ARchitectures Team Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS Université de Montpellier ENSCM case courrier 1706, Bâtiment Chimie (17), 3ème étage, Faculté des Sciences, Place Eugène Bataillon 34095 Montpellier cedex 5 France
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7
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Sarbadhikary P, Misra A. Magnetic Modulation in Heteroallene and Heterocumulene Based tert-butyl Nitroxide Diradicals: Spin Delocalization and Conformation Play Crucial Roles. Chemphyschem 2021; 22:1379-1388. [PMID: 33977620 DOI: 10.1002/cphc.202100161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/27/2021] [Indexed: 11/11/2022]
Abstract
We have theoretically investigated the magnetic properties of heteroallene (>C=C=X-) and heterocumulene (>C=C=C=X-) based tert-butyl nitroxide diradicals (X is P/As). Calculation of magnetic exchange coupling constant (J) shows ferromagnetic interaction in heteroallene based diradicals. Whereas, in heterocumulene based diradicals, tuning of J value from antiferro- to ferro-magnetic state is observed from Z- to E- isomer. Delocalization of spin density from radical site to the coupler (in planar arrangement) is observed in spin distribution analysis which is also advocated by molecular orbital analysis. The typical feature of tert-butyl nitroxide radical creates spin delocalization along with spin polarization within the coupler. The J values of all the diradicals strongly depend on the dihedral angle between radical center and coupler. Magneto-structural correlation shows that the change in dihedral angle tunes the magnetic property for both the Z- and E- isomers of heterocumulenes depending on the spin accumulation on two nearby magnetic centers. The extent of spin delocalization and conformation of spin centers on the molecular axis are important for the different J values observed in our designed systems.
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Affiliation(s)
| | - Anirban Misra
- Department of Chemistry, University of North Bengal, Dist-Darjeeling, 734013, India
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8
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Abstract
Allenes (carbodicarbenes) and [3]cumulenes are linear carbon chains that can be bent when the terminal group has a strong carbene nature. This bending can be quite pronounced in allenes but not in [3]cumulenes. In this study, how N-heterocyclic or cyclic (alkyl)(amino) carbene (NHC and CAAC, respectively) terminal groups can modify the linear structure of [n]cumulenes has been analyzed. A low π acidity of the terminal carbene affects the linearity of [2n]cumulenes. Indeed, it has been found that the NHC [4]cumulene is extremely bent, contrary to classical [4]cumulenes. The predicted NHC [4]cumulene or tricarbodicarbene has two lone pairs and the π electrons are delocalized over the whole molecule. More significantly, DFT calculations have shown that this bent [4]cumulene is very stable, considerably more so than the corresponding [3]cumulene, which has been elusive to synthesize. Remarkably, calculations have shown that all the NHC [2n]cumulenes are more than 25 kcal mol-1 more stable than the [2n-1]cumulenes.
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Affiliation(s)
- José Enrique Barquera-Lozada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito exterior, Ciudad Universitaria Coyoacán, México, D.F., 04510, Mexico
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9
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Xu W, Leary E, Hou S, Sangtarash S, González MT, Rubio‐Bollinger G, Wu Q, Sadeghi H, Tejerina L, Christensen KE, Agraït N, Higgins SJ, Lambert CJ, Nichols RJ, Anderson HL. Unusual Length Dependence of the Conductance in Cumulene Molecular Wires. Angew Chem Int Ed Engl 2019; 58:8378-8382. [PMID: 31026371 PMCID: PMC6563095 DOI: 10.1002/anie.201901228] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/22/2019] [Indexed: 01/29/2023]
Abstract
Cumulenes are sometimes described as "metallic" because an infinitely long cumulene would have the band structure of a metal. Herein, we report the single-molecule conductance of a series of cumulenes and cumulene analogues, where the number of consecutive C=C bonds in the core is n=1, 2, 3, and 5. The [n]cumulenes with n=3 and 5 have almost the same conductance, and they are both more conductive than the alkene (n=1). This is remarkable because molecular conductance normally falls exponentially with length. The conductance of the allene (n=2) is much lower, because of its twisted geometry. Computational simulations predict a similar trend to the experimental results and indicate that the low conductance of the allene is a general feature of [n]cumulenes where n is even. The lack of length dependence in the conductance of [3] and [5]cumulenes is attributed to the strong decrease in the HOMO-LUMO gap with increasing length.
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Affiliation(s)
- Wenjun Xu
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOxfordOX1 3TAUK
| | - Edmund Leary
- Department of ChemistryDonnan and Robert Robinson LaboratoriesUniversity of LiverpoolLiverpoolL69 7ZDUK
- Surface Science Research CentreUniversity of LiverpoolOxford StreetLiverpoolL69 3BXUK
| | - Songjun Hou
- Department of PhysicsLancaster UniversityLancasterLA1 4YWUK
| | | | - M. Teresa González
- Instituto Madrileño de Estudios Avanzados (IMDEA)Calle Faraday 9, Campus Universitario de Cantoblanco28049MadridSpain
| | - Gabino Rubio‐Bollinger
- Departamento de Física de la Materia CondensadaIFIMAC and Instituto “Nicolás Cabrera”Universidad Autónoma de Madrid28049MadridSpain
| | - Qingqing Wu
- Department of PhysicsLancaster UniversityLancasterLA1 4YWUK
| | - Hatef Sadeghi
- Department of PhysicsLancaster UniversityLancasterLA1 4YWUK
| | - Lara Tejerina
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOxfordOX1 3TAUK
| | | | - Nicolás Agraït
- Instituto Madrileño de Estudios Avanzados (IMDEA)Calle Faraday 9, Campus Universitario de Cantoblanco28049MadridSpain
- Departamento de Física de la Materia CondensadaIFIMAC and Instituto “Nicolás Cabrera”Universidad Autónoma de Madrid28049MadridSpain
| | - Simon J. Higgins
- Department of ChemistryDonnan and Robert Robinson LaboratoriesUniversity of LiverpoolLiverpoolL69 7ZDUK
| | | | - Richard J. Nichols
- Department of ChemistryDonnan and Robert Robinson LaboratoriesUniversity of LiverpoolLiverpoolL69 7ZDUK
- Surface Science Research CentreUniversity of LiverpoolOxford StreetLiverpoolL69 3BXUK
| | - Harry L. Anderson
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryOxfordOX1 3TAUK
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10
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Xu W, Leary E, Hou S, Sangtarash S, González MT, Rubio‐Bollinger G, Wu Q, Sadeghi H, Tejerina L, Christensen KE, Agraït N, Higgins SJ, Lambert CJ, Nichols RJ, Anderson HL. Unusual Length Dependence of the Conductance in Cumulene Molecular Wires. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wenjun Xu
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Oxford OX1 3TA UK
| | - Edmund Leary
- Department of ChemistryDonnan and Robert Robinson LaboratoriesUniversity of Liverpool Liverpool L69 7ZD UK
- Surface Science Research CentreUniversity of Liverpool Oxford Street Liverpool L69 3BX UK
| | - Songjun Hou
- Department of PhysicsLancaster University Lancaster LA1 4YW UK
| | - Sara Sangtarash
- Department of PhysicsLancaster University Lancaster LA1 4YW UK
| | - M. Teresa González
- Instituto Madrileño de Estudios Avanzados (IMDEA) Calle Faraday 9, Campus Universitario de Cantoblanco 28049 Madrid Spain
| | - Gabino Rubio‐Bollinger
- Departamento de Física de la Materia CondensadaIFIMAC and Instituto “Nicolás Cabrera”Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Qingqing Wu
- Department of PhysicsLancaster University Lancaster LA1 4YW UK
| | - Hatef Sadeghi
- Department of PhysicsLancaster University Lancaster LA1 4YW UK
| | - Lara Tejerina
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Oxford OX1 3TA UK
| | - Kirsten E. Christensen
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Oxford OX1 3TA UK
| | - Nicolás Agraït
- Instituto Madrileño de Estudios Avanzados (IMDEA) Calle Faraday 9, Campus Universitario de Cantoblanco 28049 Madrid Spain
- Departamento de Física de la Materia CondensadaIFIMAC and Instituto “Nicolás Cabrera”Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Simon J. Higgins
- Department of ChemistryDonnan and Robert Robinson LaboratoriesUniversity of Liverpool Liverpool L69 7ZD UK
| | | | - Richard J. Nichols
- Department of ChemistryDonnan and Robert Robinson LaboratoriesUniversity of Liverpool Liverpool L69 7ZD UK
- Surface Science Research CentreUniversity of Liverpool Oxford Street Liverpool L69 3BX UK
| | - Harry L. Anderson
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Oxford OX1 3TA UK
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11
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Franz M, Januszewski JA, Hampel F, Tykwinski RR. [3]Rotaxanes with Mixed Axles: Polyynes and Cumulenes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900188] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Michael Franz
- Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM); University of Erlangen-Nuremberg (FAU); Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Johanna A. Januszewski
- Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM); University of Erlangen-Nuremberg (FAU); Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM); University of Erlangen-Nuremberg (FAU); Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Rik R. Tykwinski
- Department of Chemistry; University of Alberta; Edmonton Alberta T6G 2G Canada
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12
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Spisak SN, Bühringer MU, Wei Z, Zhou Z, Tykwinski RR, Petrukhina MA. Structural and Electronic Effects of Stepwise Reduction of a Tetraaryl[3]Cumulene. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812283] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sarah N. Spisak
- Department of Chemistry; University at Albany; State University of New York Albany NY 12222 USA
| | - Martina U. Bühringer
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU); Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Zheng Wei
- Department of Chemistry; University at Albany; State University of New York Albany NY 12222 USA
| | - Zheng Zhou
- Department of Chemistry; University at Albany; State University of New York Albany NY 12222 USA
| | - Rik R. Tykwinski
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU); Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
- Department of Chemistry; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| | - Marina A. Petrukhina
- Department of Chemistry; University at Albany; State University of New York Albany NY 12222 USA
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13
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Spisak SN, Bühringer MU, Wei Z, Zhou Z, Tykwinski RR, Petrukhina MA. Structural and Electronic Effects of Stepwise Reduction of a Tetraaryl[3]Cumulene. Angew Chem Int Ed Engl 2019; 58:2023-2028. [PMID: 30560557 DOI: 10.1002/anie.201812283] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Indexed: 11/06/2022]
Abstract
The chemical reduction of a [3]cumulene ([3]TrTol) has been explored using alkali metals. Mono- and doubly reduced forms of [3]TrTol were isolated as solvent-separated ion pairs with {Na(18-crown-6)THF2 }+ and {K(18-crown-6)THF2 }+ counterions and crystallographically characterized. This allowed analysis of structural parameters of the "naked" anions of [3]TrTol without interference from metal binding. The dianion of [3]TrTol was also isolated as a contact-ion complex with {Cs(18-crown-6)}+ cations, thereby adding the effect of metal coordination to the core. Structural comparisons of anions to the neutral molecule, [3]TrTol, outline monotonic increases in bond-length alternation (BLA) upon stepwise reduction. The greatest BLA value is found for the contact-ion complex, which shows an alternating sequence of short and long carbon-carbon bonds, consistent with the structure of an alkyne. In contrast to studies on tetraphenyl[3]cumulene, the cumulenic framework of [3]TrTol remains planar in all the derivatives.
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Affiliation(s)
- Sarah N Spisak
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
| | - Martina U Bühringer
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Zheng Wei
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
| | - Zheng Zhou
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
| | - Rik R Tykwinski
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany.,Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Marina A Petrukhina
- Department of Chemistry, University at Albany, State University of New York, Albany, NY, 12222, USA
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14
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Bühringer MU, Padberg K, Phleps MD, Maid H, Placht C, Neiss C, Ferguson MJ, Görling A, Tykwinski RR. Doppelbindungen? Untersuchungen der Rotationsbarrieren von cumulenischen C=C‐Bindungen in Tetraaryl[
n
]cumulenen (
n=
3, 5, 7, 9). Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802137] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Martina U. Bühringer
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Straße 10 91058 Erlangen Deutschland
| | - Kevin Padberg
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Straße 10 91058 Erlangen Deutschland
| | - Martin D. Phleps
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Straße 10 91058 Erlangen Deutschland
| | - Harald Maid
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Straße 10 91058 Erlangen Deutschland
| | - Christian Placht
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Straße 10 91058 Erlangen Deutschland
| | - Christian Neiss
- Lehrstuhl für Theoretische Chemie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Egerlandstraße 3 91058 Erlangen Deutschland
| | - Michael J. Ferguson
- Department of ChemistryUniversity of Alberta Edmonton Alberta T6G 2G2 Kanada
| | - Andreas Görling
- Lehrstuhl für Theoretische Chemie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Egerlandstraße 3 91058 Erlangen Deutschland
| | - Rik R. Tykwinski
- Department für Chemie und Pharmazie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander Universität Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Straße 10 91058 Erlangen Deutschland
- Department of ChemistryUniversity of Alberta Edmonton Alberta T6G 2G2 Kanada
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15
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Bühringer MU, Padberg K, Phleps MD, Maid H, Placht C, Neiss C, Ferguson MJ, Görling A, Tykwinski RR. Double Bonds? Studies on the Barrier to Rotation about the Cumulenic C=C Bonds of Tetraaryl[
n
]cumulenes (
n=
3, 5, 7, 9). Angew Chem Int Ed Engl 2018; 57:8321-8325. [DOI: 10.1002/anie.201802137] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Martina U. Bühringer
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Kevin Padberg
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Martin D. Phleps
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Harald Maid
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Christian Placht
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
| | - Christian Neiss
- Lehrstuhl für Theoretische Chemie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Egerlandstr. 3 91058 Erlangen Germany
| | - Michael J. Ferguson
- Department of ChemistryUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Andreas Görling
- Lehrstuhl für Theoretische Chemie & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Egerlandstr. 3 91058 Erlangen Germany
| | - Rik R. Tykwinski
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM)Friedrich-Alexander University Erlangen-Nürnberg (FAU) Nikolaus-Fiebiger Str. 10 91058 Erlangen Germany
- Department of ChemistryUniversity of Alberta Edmonton Alberta T6G 2G2 Canada
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16
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Haberland S, Finke AD, Kerisit N, Katan C, Trolez Y, Gawel P, Leito I, Lõkov M, Järviste R, Kaupmees K, Trapp N, Ruhlmann L, Boudon C, Himmel D, Diederich F. Enhancement of Push-Pull Properties of Pentafulvene and Pentafulvalene Derivatives by Protonation at Carbon. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sophie Haberland
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Aaron D. Finke
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Nicolas Kerisit
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Claudine Katan
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS; Ecole Nationale Supérieure de Chimie de Rennes; Université de Rennes 1; 35042 Rennes France
| | - Yann Trolez
- Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS; Ecole Nationale Supérieure de Chimie de Rennes; Université de Rennes 1; 35042 Rennes France
| | - Przemyslaw Gawel
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Ivo Leito
- Institute of Chemistry; University of Tartu; Ravila 14a, Str 50411 Tartu Estonia
| | - Märt Lõkov
- Institute of Chemistry; University of Tartu; Ravila 14a, Str 50411 Tartu Estonia
| | - Robert Järviste
- Institute of Chemistry; University of Tartu; Ravila 14a, Str 50411 Tartu Estonia
| | - Karl Kaupmees
- Institute of Chemistry; University of Tartu; Ravila 14a, Str 50411 Tartu Estonia
| | - Nils Trapp
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Laurent Ruhlmann
- Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide; Institut de Chimie-UMR 7177, CNRS; Université de Strasbourg; 4 rue Blaise Pascal 67081 Strasbourg Cedex France
| | - Corinne Boudon
- Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide; Institut de Chimie-UMR 7177, CNRS; Université de Strasbourg; 4 rue Blaise Pascal 67081 Strasbourg Cedex France
| | - Daniel Himmel
- Institute for Inorganic and Analytical Chemistry; Freiburger Materialforschungszentrum FMF and; Albert-Ludwigs-Universität Freiburg; Albertstr. 21 79104 Freiburg Germany
| | - François Diederich
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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17
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Barry BM, Soper RG, Hurmalainen J, Mansikkamäki A, Robertson KN, McClennan WL, Veinot AJ, Roemmele TL, Werner‐Zwanziger U, Boeré RT, Tuononen HM, Clyburne JAC, Masuda JD. Mono‐ and Bis(imidazolidinium ethynyl) Cations and Reduction of the Latter To Give an Extended Bis‐1,4‐([3]Cumulene)‐
p
‐carboquinoid System. Angew Chem Int Ed Engl 2018; 57:749-754. [DOI: 10.1002/anie.201711031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Brian M. Barry
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
- Department of ChemistryUniversity of Wisconsin-Platteville Platteville WI 5 3818-3099 USA
| | - R. Graeme Soper
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Juha Hurmalainen
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | - Akseli Mansikkamäki
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | | | - William L. McClennan
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Alex J. Veinot
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Tracey L. Roemmele
- Department of Chemistry and BiochemistryUniversity of Lethbridge Lethbridge Alberta T1K 3M4 Canada
| | | | - René T. Boeré
- Department of Chemistry and BiochemistryUniversity of Lethbridge Lethbridge Alberta T1K 3M4 Canada
| | - Heikki M. Tuononen
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | - Jason A. C. Clyburne
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Jason D. Masuda
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
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18
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Barry BM, Soper RG, Hurmalainen J, Mansikkamäki A, Robertson KN, McClennan WL, Veinot AJ, Roemmele TL, Werner‐Zwanziger U, Boeré RT, Tuononen HM, Clyburne JAC, Masuda JD. Mono‐ and Bis(imidazolidinium ethynyl) Cations and Reduction of the Latter To Give an Extended Bis‐1,4‐([3]Cumulene)‐p‐carboquinoid System. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Brian M. Barry
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
- Department of ChemistryUniversity of Wisconsin-Platteville Platteville WI 5 3818-3099 USA
| | - R. Graeme Soper
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Juha Hurmalainen
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | - Akseli Mansikkamäki
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | | | - William L. McClennan
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Alex J. Veinot
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Tracey L. Roemmele
- Department of Chemistry and BiochemistryUniversity of Lethbridge Lethbridge Alberta T1K 3M4 Canada
| | | | - René T. Boeré
- Department of Chemistry and BiochemistryUniversity of Lethbridge Lethbridge Alberta T1K 3M4 Canada
| | - Heikki M. Tuononen
- Department of Chemistry, Nanoscience CentreUniversity of Jyväskylä P.O Box 35 University of Jyväskylä FI-40014 Finland
| | - Jason A. C. Clyburne
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
| | - Jason D. Masuda
- Department of ChemistrySaint Mary's University Halifax Nova Scotia B3H 3C3 Canada
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19
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A Four-Step Synthesis of Substituted 5,11-Dicyano-6,12-diaryltetracenes with Enhanced Stability and High Fluorescence Emission. Chemistry 2017; 24:159-168. [DOI: 10.1002/chem.201703903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Indexed: 11/07/2022]
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20
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Marshall JL, Lehnherr D, Lindner BD, Tykwinski RR. Reductive Aromatization/Dearomatization and Elimination Reactions to Access Conjugated Polycyclic Hydrocarbons, Heteroacenes, and Cumulenes. Chempluschem 2017; 82:967-1001. [PMID: 31961601 DOI: 10.1002/cplu.201700168] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/18/2017] [Indexed: 11/12/2022]
Abstract
Acenes, heteroacenes, conjugated polycyclic hydrocarbons, and polycyclic aromatic hydrocarbons (collectively referred to in this review as conjugated polycyclic molecules, CPMs) have fascinated chemists since they were first isolated and synthesized in the mid 19th century. Most recently, these compounds have shown significant promise as the active components in organic devices (e.g., solar cells, thin-film transistors, light-emitting diodes, etc.), and, since 2001, a plethora of publications detail synthetic strategies to produce CPMs. In this review, we discuss reductive aromatization, reductive dearomatization, and elimination/extrusion reactions used to form CPMs. After a brief discussion on early methods to synthesize CPMs, we detail the use of reagents used for the reductive (de)aromatization of precursors containing 1,4-diols/diethers, including SnCl2 and iodide (I- ). Extension of these methods to carbomers and cumulenes is briefly discussed. We then describe low-valent metal species used to reduce endoxides to CPMs, and discuss the methods to directly reduce acenediones and acenones to the respective acene. In the final section, we describe methods used to affect aromatization to the desired CPM via extrusion of small, volatile molecules.
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Affiliation(s)
- Jonathan L Marshall
- Department of Chemistry, Gunning-Lemieux Chemistry Center, University of Alberta, Edmonton, AB, T6G 2G2, Canada
| | - Dan Lehnherr
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Benjamin D Lindner
- Department for Chemistry and Pharmacy, and Interdisciplinary Center for Molecular Materials (ICCM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Henkestrasse 42, 91054, Erlangen, Germany
| | - Rik R Tykwinski
- Department of Chemistry, Gunning-Lemieux Chemistry Center, University of Alberta, Edmonton, AB, T6G 2G2, Canada.,Department for Chemistry and Pharmacy, and Interdisciplinary Center for Molecular Materials (ICCM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Henkestrasse 42, 91054, Erlangen, Germany
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21
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Ueta K, Naoda K, Ooi S, Tanaka T, Osuka A. meso
-Cumulenic 2H
-Corroles from meso
-Ethynyl-3H
-corroles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703139] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kento Ueta
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Koji Naoda
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Shota Ooi
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Takayuki Tanaka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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22
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Ueta K, Naoda K, Ooi S, Tanaka T, Osuka A. meso
-Cumulenic 2H
-Corroles from meso
-Ethynyl-3H
-corroles. Angew Chem Int Ed Engl 2017; 56:7223-7226. [DOI: 10.1002/anie.201703139] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Kento Ueta
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Koji Naoda
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Shota Ooi
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Takayuki Tanaka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo-ku Kyoto 606-8502 Japan
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23
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Gawel P, Halabi EA, Schweinfurth D, Trapp N, Ruhlmann L, Boudon C, Diederich F. Synthesis of Dicyano-Substituted Benzo[c]fluorenes from Tetraaryl[3]cumulenes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600470] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Przemyslaw Gawel
- Laboratorium für Organische Chemie; ETH Zürich; Vladimir-Prelog-Weg 3, HCI 8093 Zürich Switzerland
| | - Elias A. Halabi
- Laboratorium für Organische Chemie; ETH Zürich; Vladimir-Prelog-Weg 3, HCI 8093 Zürich Switzerland
| | - David Schweinfurth
- Laboratorium für Organische Chemie; ETH Zürich; Vladimir-Prelog-Weg 3, HCI 8093 Zürich Switzerland
| | - Nils Trapp
- Laboratorium für Organische Chemie; ETH Zürich; Vladimir-Prelog-Weg 3, HCI 8093 Zürich Switzerland
| | - Laurent Ruhlmann
- Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide; Institut de Chimie-UMR 7177; Université de Strasbourg; 4, rue Blaise Pascal 67000 Strasbourg France
| | - Corinne Boudon
- Laboratoire d'Electrochimie et de Chimie Physique du Corps Solide; Institut de Chimie-UMR 7177; Université de Strasbourg; 4, rue Blaise Pascal 67000 Strasbourg France
| | - François Diederich
- Laboratorium für Organische Chemie; ETH Zürich; Vladimir-Prelog-Weg 3, HCI 8093 Zürich Switzerland
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24
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Franz M, Januszewski JA, Wendinger D, Neiss C, Movsisyan LD, Hampel F, Anderson HL, Görling A, Tykwinski RR. Cumulen-Rotaxane: Stabilisierung und Charakterisierung von [9]Cumulenen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501810] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Franz M, Januszewski JA, Wendinger D, Neiss C, Movsisyan LD, Hampel F, Anderson HL, Görling A, Tykwinski RR. Cumulene Rotaxanes: Stabilization and Study of [9]Cumulenes. Angew Chem Int Ed Engl 2015; 54:6645-9. [DOI: 10.1002/anie.201501810] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 11/10/2022]
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26
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Gawel P, Wu YL, Finke AD, Trapp N, Zalibera M, Boudon C, Gisselbrecht JP, Schweizer WB, Gescheidt G, Diederich F. Push-Pull Buta-1,2,3-trienes: Exceptionally Low Rotational Barriers of Cumulenic CC Bonds and Proacetylenic Reactivity. Chemistry 2015; 21:6215-25. [DOI: 10.1002/chem.201406583] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Indexed: 12/21/2022]
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27
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Neiss C, Trushin E, Görling A. The Nature of One-Dimensional Carbon: Polyynic versus Cumulenic. Chemphyschem 2014; 15:2497-502. [DOI: 10.1002/cphc.201402266] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/17/2014] [Indexed: 11/12/2022]
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28
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Gawel P, Dengiz C, Finke AD, Trapp N, Boudon C, Gisselbrecht JP, Diederich F. Synthese von Cyano-substituierten Diaryltetracenen ausgehend von Tetraaryl[3]cumulenen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402299] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Gawel P, Dengiz C, Finke AD, Trapp N, Boudon C, Gisselbrecht JP, Diederich F. Synthesis of Cyano-Substituted Diaryltetracenes from Tetraaryl[3]cumulenes. Angew Chem Int Ed Engl 2014; 53:4341-5. [DOI: 10.1002/anie.201402299] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Indexed: 11/07/2022]
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30
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Januszewski JA, Hampel F, Neiss C, Görling A, Tykwinski RR. Unerwartete Bildung eines [4]Radialens und mehrerer Dendralene bei der Addition von Tetracyanoethylen an ein Tetraaryl[5]cumulen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309355] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Januszewski JA, Hampel F, Neiss C, Görling A, Tykwinski RR. Unexpected Formation of a [4]Radialene and Dendralenes by Addition of Tetracyanoethylene to a Tetraaryl[5]cumulene. Angew Chem Int Ed Engl 2014; 53:3743-7. [DOI: 10.1002/anie.201309355] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Indexed: 11/10/2022]
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