1
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Silvi E, Wei WJ, Johansson MJ, Himo F, Mendoza A. Uncatalyzed Diboron Activation by a Strained Hydrocarbon: Experimental and Theoretical Study of [1.1.1]Propellane Diborylation. Chemistry 2024; 30:e202402152. [PMID: 38940291 DOI: 10.1002/chem.202402152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 06/29/2024]
Abstract
The synthesis of strained carbocyclic building blocks is relevant for Medicinal Chemistry, and methylenecyclobutanes are particularly challenging with current synthetic technology. Careful inspection of the reactivity of [1.1.1]propellane and diboron reagents has revealed that bis(catecholato)diboron (B2cat2) can produce a bis(borylated) methylenecyclobutane in a few minutes at room temperature. This reaction constitutes the first example of B-B bond activation by a special apolar hydrocarbon and also the first time that propellane is electrophilically activated by boron. Mechanistic studies including in situ NMR kinetics and DFT calculations demonstrate that the diboron moiety can be directly activated through coordination with the inverted sigma bond of propellane, and reveal that DMF is involved in the stabilization of diboronate ylide intermediates rather than the activation of the B-B bond. These results enable new possibilities for both diboron and propellane chemistry, and for further developments in the synthesis of methylenecyclobutanes based on propellane strain release.
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Affiliation(s)
- Emanuele Silvi
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (eCVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83, Mölndal, Sweden
| | - Wen-Jie Wei
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Magnus J Johansson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (eCVRM), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden 1, 431 83, Mölndal, Sweden
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Abraham Mendoza
- Institute of Molecular Science (ICMol), University of Valencia, Calle Catedrático José Beltrán, 2, 46980, Paterna, Spain
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2
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Kumar S, Arora A, Singh SK, Kumar R, Shankar B, Singh BK. Phenyliodine bis(trifluoroacetate) as a sustainable reagent: exploring its significance in organic synthesis. Org Biomol Chem 2024; 22:3109-3185. [PMID: 38529599 DOI: 10.1039/d3ob01964k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Iodine-containing molecules, especially hypervalent iodine compounds, have gained significant attention in organic synthesis. They are valuable and sustainable reagents, leading to a remarkable surge in their use for chemical transformations. One such hypervalent iodine compound, phenyliodine bis(trifluoroacetate)/bis(trifluoroacetoxy)iodobenzene, commonly referred to as PIFA, has emerged as a prominent candidate due to its attributes of facile manipulation, moderate reactivity, low toxicity, and ready availability. PIFA presents an auspicious prospect as a substitute for costly organometallic catalysts and environmentally hazardous oxidants containing heavy metals. PIFA exhibits remarkable catalytic activity, facilitating an array of consequential organic reactions, including sulfenylation, alkylarylation, oxidative coupling, cascade reactions, amination, amidation, ring-rearrangement, carboxylation, and numerous others. Over the past decade, the application of PIFA in synthetic chemistry has witnessed substantial growth, necessitating an updated exploration of this field. In this discourse, we present a concise overview of PIFA's applications as a 'green' reagent in the domain of synthetic organic chemistry. A primary objective of this article is to bring to the forefront the scientific community's awareness of the merits associated with adopting PIFA as an environmentally conscientious alternative to heavy metals.
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Affiliation(s)
- Sumit Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Aditi Arora
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
| | - Sunil K Singh
- Department of Chemistry, Kirori Mal College, University of Delhi, Delhi-110007, India.
| | - Rajesh Kumar
- Department of Chemistry, R.D.S College, B.R.A. Bihar University, Muzaffarpur-842002, India
| | - Bhawani Shankar
- Department of Chemistry, Deshbandhu College, University of Delhi, Delhi-110019, India
| | - Brajendra K Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India.
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3
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Wang JX, Fu MC, Yan LY, Lu X, Fu Y. Photoinduced Triphenylphosphine and Iodide Salt Promoted Reductive Decarboxylative Coupling. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307241. [PMID: 38234213 DOI: 10.1002/advs.202307241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/21/2023] [Indexed: 01/19/2024]
Abstract
The transient electron donor-acceptor (EDA) complex has been an emerging area in the photoinduced organic synthesis field, generating radicals without exogenous transition-metal or organic dye-based photoredox catalysts. The catalytic platform to form suitable photoactive EDA complexes for photochemical reduction reactions remains underdeveloped. Herein, a general photoinduced reductive alkylation via the EDA complex strategy is described. A simple yet multifunctional system, triphenylphosphine and iodide salt, promotes the photoinduced decarboxylative hydroalkylation, and reductive defluorinative decarboxylative alkylation of trifluoromethyl alkenes, to access trifluoromethyl alkanes and gem-difluoroalkenes. Moreover, decarboxylative hydroalkylation can be applied to more kinds of electron-deficient alkenes as a general Giese addition reaction.
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Affiliation(s)
- Jia-Xin Wang
- Hefei National Research Center for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei, 230026, China
| | - Ming-Chen Fu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Lu-Yu Yan
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Xi Lu
- Key Laboratory of Precision and Intelligent Chemistry, Department of Applied Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China
| | - Yao Fu
- Hefei National Research Center for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei, 230026, China
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4
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Bastien G, Nováková Lachmanová Š, Tarábek J, Rončević I, Hromadová M, Kaleta J, Pospíšil L. Electrochemical test of flexibility of pyridine terminated molecular rods. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140377] [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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5
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Hazari AS, Chandra S, Kar S, Sarkar B. Metal Complexes of Singly, Doubly and Triply Linked Porphyrins and Corroles: An Insight into the Physicochemical Properties. Chemistry 2022; 28:e202104550. [PMID: 35088477 PMCID: PMC9311859 DOI: 10.1002/chem.202104550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Indexed: 11/19/2022]
Abstract
Metal complexes of multi-porphyrins and multi-corroles are unique systems that display a host of extremely interesting properties. Availability of free meso and β positions allow formation of different types of directly linked bis-porphyrins giving rise to intriguing optical and electronic properties. While the fields of metalloporphyrin and corroles monomer have seen exponential growth in the last decades, the chemistry of metal complexes of bis-porphyrins and bis-corroles remain rather underexplored. Therefore, the impact of covalent linkages on the optical, electronic, (spectro)electrochemical, magnetic and electrocatalytic activities of metal complexes of bis-porphyrins and -corroles has been summarized in this review article. This article shows that despite the (still) somewhat difficult synthetic access to these molecules, their extremely exciting properties do make a strong case for pursuing research on these classes of compounds.
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Affiliation(s)
- Arijit Singha Hazari
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Shubhadeep Chandra
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Sanjib Kar
- School of Chemical SciencesNational Institute of Science Education and Research (NISER)Bhubaneswar752050India
- Homi Bhabha National InstituteTraining School ComplexMumbai400094(India)
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische KoordinationschemieInstitut für Anorganische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
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6
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Wang Z, Cheng Q, Peng RK, Yan P, Zeng R, Tian WJ, Pan B, Gu J, Li YL, Ouyang Q. An Oxidant- and Catalyst-Free Electrooxidative Cross-Coupling Approach to Synthesize meso-Substituted Porphyrin Derivatives. J Org Chem 2022; 87:4742-4749. [PMID: 35302772 DOI: 10.1021/acs.joc.2c00031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of porphyrin and chlorin derivatives has attracted significant attention due to their numerous applications. Herein, we report an environment friendly oxidant- and catalyst-free electrooxidative cross-coupling approach for multiple coupling reactions to synthesize meso C-N, C-O, and C-S substituted porphyrin and chlorin derivatives. For C-N cross-coupling reactions, diaminated porphyrins were obtained as the main products, while using 4-bromo-2,6-dimethyl aniline resulted in monoaminated product. Similarly, electrochemical catalysis of porphyrins with phenol and thiophene produced meso-disubstituted porphyrins in moderate yields under a smaller current. Chlorins were also applicable, and 20-substituted products were efficiently produced regioselectively. To the best of our knowledge, this work represents the first example of electrooxidative C-X cross-coupling of porphyrins and chlorins.
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Affiliation(s)
- Zheng Wang
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
| | - Qi Cheng
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
| | - Rui-Kun Peng
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
| | - Peng Yan
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, PR China
| | - Rong Zeng
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
| | - Wen-Jing Tian
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, PR China
| | - Bin Pan
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
| | - Jing Gu
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
| | - Yu-Long Li
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, PR China
| | - Qin Ouyang
- College of Pharmacy, Third Military of Medical University, Chongqing 400038, PR China
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7
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Guschlbauer J, Shaughnessy KH, Pietrzak A, Chung MC, Sponsler MB, Kaszyński P. [closo-B10H8-1,10-(CN)2]2– as a Conduit of Electronic Effects: Comparative Studies of Fe···Fe Communication in [{(η5-Cp)(dppe)Fe}2{μ2-(NC-X-CN)}]n+ (n = 0, 2). Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00269] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jannick Guschlbauer
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-001 Łódź, Poland
| | - Kevin H. Shaughnessy
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-001 Łódź, Poland
- Department of Chemistry and Biochemistry, University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Anna Pietrzak
- Faculty of Chemistry, Łódź University of Technology, Żeromskiego 116, 90-924 Łódź, Poland
| | - Min-Chul Chung
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Michael B. Sponsler
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Piotr Kaszyński
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-001 Łódź, Poland
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
- Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
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8
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Krebs J, Haehnel M, Krummenacher I, Friedrich A, Braunschweig H, Finze M, Ji L, Marder TB. Synthesis and Structure of an o-Carboranyl-Substituted Three-Coordinate Borane Radical Anion. Chemistry 2021; 27:8159-8167. [PMID: 33769625 PMCID: PMC8252506 DOI: 10.1002/chem.202100938] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Indexed: 12/14/2022]
Abstract
Bis(1-(4-tolyl)-carboran-2-yl)-(4-tolyl)-borane [(1-(4-MeC6 H4 )-closo-1,2-C2 B10 H10 -2-)2 (4-MeC6 H4 )B] (1), a new bis(o-carboranyl)-(R)-borane was synthesised by lithiation of the o-carboranyl precursor and subsequent salt metathesis reaction with (4-tolyl)BBr2 . Cyclic voltammetry experiments on 1 show multiple distinct reduction events with a one-electron first reduction. In a selective reduction experiment the corresponding paramagnetic radical anion 1.- was isolated and characterized. Single-crystal structure analyses allow an in-depth comparison of 1, 1.- , their calculated geometries, and the S1 excited state of 1. Photophysical studies of 1 show a charge transfer (CT) emission with low quantum yield in solution but a strong increase in the solid state. TD-DFT calculations were used to identify transition-relevant orbitals.
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Affiliation(s)
- Johannes Krebs
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Martin Haehnel
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Ivo Krummenacher
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Braunschweig
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Maik Finze
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Lei Ji
- Frontiers Science Center for Flexible Electronics (FSCFE)Shaanxi Institute of Flexible Electronics (SIFE)Northwestern Polytechnical University127 West Youyi Road710072Xi'anP. R. China
| | - Todd B. Marder
- Institute for Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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9
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Yu W, Qiu FY, Luo ST, Shi HT, Yuan G, Wei X. Coordination assembly and host–guest chemistry of a triply interlocked [2]catenane. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00174d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Triply catenated systems composed of two or more discrete coordination-metal cages through mechanical bonds exhibit excellent host–guest behaviors, which can be potentially applied in drug delivery systems.
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Affiliation(s)
- Weibin Yu
- Analysis and Testing Central Facility
- Institutes of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- P. R. China
| | - Feng-Yi Qiu
- Analysis and Testing Central Facility
- Institutes of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- P. R. China
| | - Shi-Ting Luo
- Analysis and Testing Central Facility
- Institutes of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- P. R. China
| | - Hua-Tian Shi
- Analysis and Testing Central Facility
- Institutes of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- P. R. China
| | - Guozan Yuan
- Analysis and Testing Central Facility
- Institutes of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- P. R. China
| | - Xianwen Wei
- Analysis and Testing Central Facility
- Institutes of Molecular Engineering and Applied Chemistry
- Anhui University of Technology
- Ma'anshan 243002
- P. R. China
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10
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Ni H, Lu Z, Xie Z. Transition-Metal-Free Cross-Coupling Reaction of Iodocarboranes with Terminal Alkynes Enabled by UV Light: Synthesis of 1-Alkynyl- o-Carboranes and Carborane-Fused Cyclics. J Am Chem Soc 2020; 142:18661-18667. [PMID: 33048535 DOI: 10.1021/jacs.0c08652] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A transition-metal-free coupling protocol between iodocarboranes and terminal alkynes enabled by light at room temperature has been developed, leading to the synthesis of a variety of 1-alkynyl-o-carboranes. Moreover, following this strategy, the introduction of 1-I-3-aryl-o-carboranes or 1-I-2-aryl-o-carboranes results in the formation of o-carborane-fused cyclics. Interestingly, when 1-I-3-(p-R-C6H4)-o-carboranes are chosen as coupling partners, unexpected R-group migration products are also isolated. On the basis of the results of control experiments and isolation of the key intermediates, a possible reaction mechanism is then proposed, involving the formation of spiro radical species.
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Affiliation(s)
- Hangcheng Ni
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Zhenpin Lu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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11
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Lorenz R, Reger D, Weller R, Jux N, Burzlaff N. Hexa- peri-hexabenzocoronene decorated with an allenylidene ruthenium complex - almost a flyswatter. Dalton Trans 2020; 49:13134-13141. [PMID: 32930692 DOI: 10.1039/d0dt02729d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Carbon-rich ruthenium allenylidene complexes bearing either a hexaarylbenzene (HAB) or a hexa-peri-hexabenzocoronene (HBC) substituent were synthesised. This was achieved via the corresponding propargyl alcohols with HAB and HBC substituents, which were accessible via 3 or 4 step reaction cascades. Reaction of the propargyl alcohols HC[triple bond, length as m-dash]C(OH)Ph(HAB) and HC[triple bond, length as m-dash]C(OH)Ph(HBC) with [RuCl(η5-C5H5)(PPh3)2] yielded the complexes [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash]C(HAB)(Ph))(PPh3)2]PF6 and [Ru(η5-C5H5)([double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash]C(HBC)(Ph))(PPh3)2]PF6. The latter of which shows interesting π-π-stacking behaviour in the solid state as well as aggregation in solution.
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Affiliation(s)
- Rebecca Lorenz
- Department Chemistry and Pharmacy, Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuernberg, Egerlandstr. 1, 91058 Erlangen, Germany
| | - David Reger
- Department Chemistry and Pharmacy, University of Erlangen-Nuernberg, Nicolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Ruth Weller
- Department Chemistry and Pharmacy, Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuernberg, Egerlandstr. 1, 91058 Erlangen, Germany and Fb. 15 - Chemie, Philipps-University Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Norbert Jux
- Department Chemistry and Pharmacy, University of Erlangen-Nuernberg, Nicolaus-Fiebiger-Str. 10, 91058 Erlangen, Germany
| | - Nicolai Burzlaff
- Department Chemistry and Pharmacy, Interdisciplinary Center of Molecular Materials (ICMM), University of Erlangen-Nuernberg, Egerlandstr. 1, 91058 Erlangen, Germany
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12
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Makhoul R, Groizard T, Hamon P, Roisnel T, Dorcet V, Kahlal S, Halet J, Hamon J, Lapinte C. 1,4‐Diethynylbenzene‐Bridged [Cp*(dppe)Fe]
n+
Units: Effect of 2,5‐Ethynyl Groups on the Chemical and Electronic Properties. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rim Makhoul
- CNRS, ISCR‐UMR 6226 Univ Rennes 35000 Rennes France
| | | | - Paul Hamon
- CNRS, ISCR‐UMR 6226 Univ Rennes 35000 Rennes France
| | | | | | - Samia Kahlal
- CNRS, ISCR‐UMR 6226 Univ Rennes 35000 Rennes France
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13
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Hodecker M, Driscoll AM, Bunz UHF, Dreuw A. Twisting and bending photo-excited phenylethynylbenzenes - a theoretical analysis. Phys Chem Chem Phys 2020; 22:9974-9981. [PMID: 32356545 DOI: 10.1039/d0cp01662d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Oligo(phenylethynyl)benzenes are a family of compounds that exhibit a rich photochemistry changing dramatically with different orientation of a phenyl group in the molecule. Quantum-chemical calculations have been performed to investigate different members of this family of compounds and compared to previous experimental and theoretical studies. 1,4-Bis(phenylethynyl)benzene (BPEB) has different optical properties than its smaller relative diphenylacetylene; however, upon twisting an outer phenyl ring of BPEB, its photochemistry becomes very similar. Fluorine substituents at the central benzene ring are shown to have only small effects on the optical properties of BPEB.
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Affiliation(s)
- Manuel Hodecker
- Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205, D-69120 Heidelberg, Germany.
| | - Alexis M Driscoll
- Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205, D-69120 Heidelberg, Germany. and Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Uwe H F Bunz
- Institute of Organic Chemistry, Heidelberg University, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Andreas Dreuw
- Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205, D-69120 Heidelberg, Germany.
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14
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Flock M, Bosse L, Kaiser D, Engels B, Fischer I. A time-resolved photoelectron imaging study on isolated tolane: observation of the biradicalic 1A u state. Phys Chem Chem Phys 2019; 21:13157-13164. [PMID: 31173002 DOI: 10.1039/c9cp02222h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tolane (diphenylacetylene, C14H10) was studied by picosecond time-resolved photoionisation and photoelectron imaging in a supersonic jet. The low-energy part of the 1B1u← S0 REMPI spectrum is very similar to an earlier LIF spectrum, however additional bands were observed at higher energies above the fluorescence cut-off. For a number of bands the dynamics were investigated via pump-probe photoionisation and photoelectron spectroscopy. Around the 1B1u origin the lifetimes are in the ns range, but they drop to some 10 ps at higher excitation energies. For the short-lived bands at higher energies a sequential two-step relaxation to a long-lived electronic state was observed proceeding via an intermediately populated state with a lifetime of 100-200 ps. By comparison with previous quantum chemical calculations we assign this state as the biradicalic trans-bent1Au state that is ionised in a two-photon process.
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Affiliation(s)
- Marco Flock
- Institute of Physical and Theoretical Chemistry, University of Wuerzburg, 97074 Wuerzburg, Germany.
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15
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Shieh M, Li Y. Pnictogen‐containing iron and chromium carbonyl complexes: From complexes to semiconducting frameworks. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Minghuey Shieh
- Department of ChemistryNational Taiwan Normal University Taipei Taiwan, Republic of China
| | - Yu‐Huei Li
- Department of ChemistryNational Taiwan Normal University Taipei Taiwan, Republic of China
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16
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Pourjavadi A, Marandi GB. Preparation of Conjugated Enynes and Arylacetylenic Compounds from Arylalkynols using Alumina in Dry Media. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823402103170736] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Arylalkynols were converted into both conjugated enynes and arylacetylenic compounds using p-TsCl/Al2O3 and KOH/Al2O3 respectively in classical heating or microwave irradiation methods in good yields.
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Affiliation(s)
- Ali Pourjavadi
- Department of Chemistry, Sharif University of Technology, PO Box 11365-9516, Azadi Ave., Tehran, Iran
| | - Gholam Bagheri Marandi
- Department of Chemistry, Sharif University of Technology, PO Box 11365-9516, Azadi Ave., Tehran, Iran
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17
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Kaleta J, Rončević I, Císařová I, Dračínský M, Šolínová V, Kašička V, Michl J. Bridge-Chlorinated Bicyclo[1.1.1]pentane-1,3-dicarboxylic Acids. J Org Chem 2019; 84:2448-2461. [DOI: 10.1021/acs.joc.8b02780] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - Igor Rončević
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Veronika Šolínová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Václav Kašička
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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18
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Locke GM, Bernhard SSR, Senge MO. Nonconjugated Hydrocarbons as Rigid-Linear Motifs: Isosteres for Material Sciences and Bioorganic and Medicinal Chemistry. Chemistry 2019; 25:4590-4647. [PMID: 30387906 DOI: 10.1002/chem.201804225] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 10/20/2018] [Indexed: 01/02/2023]
Abstract
Nonconjugated hydrocarbons, like bicyclo[1.1.1]pentane, bicyclo[2.2.2]octane, triptycene, and cubane are a unique class of rigid linkers. Due to their similarity in size and shape they are useful mimics of classic benzene moieties in drugs, so-called bioisosteres. Moreover, they also fulfill an important role in material sciences as linear linkers, in order to arrange various functionalities in a defined spatial manner. In this Review article, recent developments and usages of these special, rectilinear systems are discussed. Furthermore, we focus on covalently linked, nonconjugated linear arrangements and discuss the physical and chemical properties and differences of individual linkers, as well as their application in material and medicinal sciences.
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Affiliation(s)
- Gemma M Locke
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Stefan S R Bernhard
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
| | - Mathias O Senge
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin, 2, Ireland
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19
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Hailmann M, Hupp B, Himmelspach A, Keppner F, Hennig PT, Bertermann R, Steffen A, Finze M. Carba-closo-dodecaboranylethynyl ligands facilitating luminescent reversed charge-transfer excited states in gold/silver complexes. Chem Commun (Camb) 2019; 55:9351-9354. [DOI: 10.1039/c9cc05060d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homo- and heterometallic gold(i) and silver(i) complexes with the carba-closo-dodecaboranylethynyl ligand were obtained and the participation of the boron cluster to the photophysical properties was proven.
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Affiliation(s)
- Michael Hailmann
- Institut für Anorganische Chemie
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)
- Julius-Maximilians-Universität Würzburg, Am Hubland
- 97074 Würzburg
- Germany
| | - Benjamin Hupp
- Fakultät für Chemie und Chemische Biologie
- Technische Universität Dortmund
- 44227 Dortmund
- Germany
| | - Alexander Himmelspach
- Institut für Anorganische Chemie
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)
- Julius-Maximilians-Universität Würzburg, Am Hubland
- 97074 Würzburg
- Germany
| | - Fabian Keppner
- Institut für Anorganische Chemie
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)
- Julius-Maximilians-Universität Würzburg, Am Hubland
- 97074 Würzburg
- Germany
| | - Philipp T. Hennig
- Institut für Anorganische Chemie
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)
- Julius-Maximilians-Universität Würzburg, Am Hubland
- 97074 Würzburg
- Germany
| | - Rüdiger Bertermann
- Institut für Anorganische Chemie
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)
- Julius-Maximilians-Universität Würzburg, Am Hubland
- 97074 Würzburg
- Germany
| | - Andreas Steffen
- Fakultät für Chemie und Chemische Biologie
- Technische Universität Dortmund
- 44227 Dortmund
- Germany
| | - Maik Finze
- Institut für Anorganische Chemie
- Institut für nachhaltige Chemie & Katalyse mit Bor (ICB)
- Julius-Maximilians-Universität Würzburg, Am Hubland
- 97074 Würzburg
- Germany
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20
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Synthesis and intramolecular electronic interactions of hexaarylbenzene bearing redox-active Cp*(dppe)Fe-C≡C- termini. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Kaleta J, Bastien G, Císařová I, Batail P, Michl J. Molecular Rods: Facile Desymmetrization of 1,4-Diethynylbicyclo[2.2.2]octane. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800507] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiří Kaleta
- Institute of Organic Chemistry and Biochemistry AS CR; Flemingovo nám. 2 16610 Praha 6 Czech Republic
| | - Guillaume Bastien
- Institute of Organic Chemistry and Biochemistry AS CR; Flemingovo nám. 2 16610 Praha 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Faculty of Science; Charles University in Prague; Hlavova 2030 12840 Prague 2 Czech Republic
| | - Patrick Batail
- Laboratoire MOLTECH-Anjou; CNRS UMR 6200; Université d'Angers; 49045 Angers France
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry AS CR; Flemingovo nám. 2 16610 Praha 6 Czech Republic
- Department of Chemistry and Biochemistry; University of Colorado; 80309-0215 Boulder CO United States
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22
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Schmidt HC, Larsen CB, Wenger OS. Electron Transfer around a Molecular Corner. Angew Chem Int Ed Engl 2018; 57:6696-6700. [DOI: 10.1002/anie.201800396] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/02/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Hauke C. Schmidt
- Department of ChemistryUniversity of Basel St. Johanns-Ring 19 4056 Basel Switzerland
| | - Christopher B. Larsen
- Department of ChemistryUniversity of Basel St. Johanns-Ring 19 4056 Basel Switzerland
| | - Oliver S. Wenger
- Department of ChemistryUniversity of Basel St. Johanns-Ring 19 4056 Basel Switzerland
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23
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Affiliation(s)
- Hauke C. Schmidt
- Departement ChemieUniversität Basel St. Johanns-Ring 19 4056 Basel Schweiz
| | | | - Oliver S. Wenger
- Departement ChemieUniversität Basel St. Johanns-Ring 19 4056 Basel Schweiz
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24
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Melnikov AR, Davydova MP, Sherin PS, Korolev VV, Stepanov AA, Kalneus EV, Benassi E, Vasilevsky SF, Stass DV. X-ray Generated Recombination Exciplexes of Substituted Diphenylacetylenes with Tertiary Amines: A Versatile Experimental Vehicle for Targeted Creation of Deep-Blue Electroluminescent Systems. J Phys Chem A 2018; 122:1235-1252. [PMID: 29283574 DOI: 10.1021/acs.jpca.7b11634] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Customizable and technology-friendly functional materials are one of the mainstays of emerging organic electronics and optoelectronics. We show that recombination exciplexes of simple substituted diphenylacetylenes with tertiary amines can be a convenient source of tunable deep-blue emission with possible applications in organic electroluminescent systems. The optically inaccessible exciplexes were produced via recombination of radiation-generated radical ion pairs in alkane solution, which mimics charge transport and recombination in the active layer of practical organic light-emitting diodes in a simple solution-based experiment. Despite varying and rather poor intrinsic emission properties, diphenylacetylene and its prototypical methoxy (donor) or trifluoromethyl (acceptor) monosubstituted derivatives readily form recombination exciplexes with N,N-dimethylaniline and other tertiary amines that produce emission with maxima ranging from 385 to 435 nm. The position of emission band maximum linearly correlates with readily calculated gas-phase electron affinity of the corresponding diphenylacetylene, which can be used for fast computational prescreening of the candidate molecules, and various substituted diphenylacetylenes can be synthesized via relatively simple and universal cross-coupling reactions of Sonogashira and Castro. Together, the simple solution-based experiment, computationally cheap prescreening method, and universal synthetic strategy may open a very broad and chemically convenient class of compounds to obtain OLEDs and OLED-based multifunctional devices with tunable emission spectrum and high conversion efficiency that has yet not been seriously considered for these purposes.
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Affiliation(s)
- Anatoly R Melnikov
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation.,Novosibirsk State University , 2, Pirogova Str., 630090 Novosibirsk, Russian Federation
| | - Maria P Davydova
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Peter S Sherin
- Novosibirsk State University , 2, Pirogova Str., 630090 Novosibirsk, Russian Federation.,International Tomography Center , 3a, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Valeri V Korolev
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Alexander A Stepanov
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Evgeny V Kalneus
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Enrico Benassi
- School of Science and Technology, Nazarbayev University , 53, Qabanbay Batyr Ave., 010000 Astana, Kazakhstan.,University of Oklahoma , 660 Parrington Oval, Norman, Oklahoma 73019, United States
| | - Sergei F Vasilevsky
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation
| | - Dmitri V Stass
- Institute of Chemical Kinetics and Combustion SB RAS , 3, Institutskaya Str., 630090 Novosibirsk, Russian Federation.,Novosibirsk State University , 2, Pirogova Str., 630090 Novosibirsk, Russian Federation
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25
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Cook AR, Valášek M, Funston AM, Poliakov P, Michl J, Miller JR. p-Carborane Conjugation in Radical Anions of Cage–Cage and Cage–Phenyl Compounds. J Phys Chem A 2018; 122:798-810. [DOI: 10.1021/acs.jpca.7b10885] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew R. Cook
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michal Valášek
- Institute
of Organic Chemistry and Biochemistry, ASCR, Prague 6 16610, Czech Republic
| | - Alison M. Funston
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Pavel Poliakov
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Josef Michl
- Institute
of Organic Chemistry and Biochemistry, ASCR, Prague 6 16610, Czech Republic
- Department
of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - John R. Miller
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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26
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27
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Structural diversity of homobinuclear transition metal complexes of the phenazine ligand: theoretical investigation. Struct Chem 2017. [DOI: 10.1007/s11224-017-1064-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Pichaandi KR, Safronov AV, Sevryugina YV, Everett TA, Jalisatgi SS, Hawthorne MF. Rodlike Polymers Containing Nickel and Cobalt Metal Bis(dicarbollide) Anions: Synthesis and Characterization. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kothanda Rama Pichaandi
- International Institute of
Nano and Molecular Medicine (I2NM2), University of Missouri, Columbia, Missouri 65211, United States
| | - Alexander V. Safronov
- International Institute of
Nano and Molecular Medicine (I2NM2), University of Missouri, Columbia, Missouri 65211, United States
| | - Yulia V. Sevryugina
- International Institute of
Nano and Molecular Medicine (I2NM2), University of Missouri, Columbia, Missouri 65211, United States
| | - Thomas A. Everett
- International Institute of
Nano and Molecular Medicine (I2NM2), University of Missouri, Columbia, Missouri 65211, United States
| | - Satish S. Jalisatgi
- International Institute of
Nano and Molecular Medicine (I2NM2), University of Missouri, Columbia, Missouri 65211, United States
| | - M. Frederick Hawthorne
- International Institute of
Nano and Molecular Medicine (I2NM2), University of Missouri, Columbia, Missouri 65211, United States
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29
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Aguilar-Granda A, Pérez-Estrada S, Sánchez-González E, Álvarez JR, Rodríguez-Hernández J, Rodríguez M, Roa AE, Hernández-Ortega S, Ibarra IA, Rodríguez-Molina B. Transient Porosity in Densely Packed Crystalline Carbazole–(p-Diethynylphenylene)–Carbazole Rotors: CO2 and Acetone Sorption Properties. J Am Chem Soc 2017; 139:7549-7557. [DOI: 10.1021/jacs.7b02015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Salvador Pérez-Estrada
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | | | | | - Joelis Rodríguez-Hernández
- Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo,
No. 140, Saltillo, Coahuila 25294, México
| | - Mario Rodríguez
- Centro de Investigaciones en Óptica, A.P. 1-948, León, Guanajuato 37000, México
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30
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Zhang J, Guo SZ, Dong YB, Rao L, Yin J, Yu GA, Hartl F, Liu SH. Multistep Oxidation of Diethynyl Oligophenylamine-Bridged Diruthenium and Diiron Complexes. Inorg Chem 2017; 56:1001-1015. [PMID: 28045545 DOI: 10.1021/acs.inorgchem.6b02809] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Homo-dinuclear nonlinear complexes [{M(dppe)Cp*}2{μ-(-C≡C)2X}] (dppe = 1,2-bis(diphenylphosphino)ethane; Cp* = η5-C5Me5; X = triphenylamine (TPA), M = Ru (1a) and Fe (1b); X = N,N,N',N'-tetraphenylphenylene-1,4-diamine (TPPD), M = Ru (2a)) were prepared and characterized by 1H, 13C, and 31P NMR spectroscopy and single-crystal X-ray diffraction (1a, 2a). Attempts to prepare the diiron analogue of 2a were not successful. Experimental data obtained from cyclic voltammetry, square wave voltammetry, UV-vis-NIR (NIR = near-infrared) spectro-electrochemistry, and very informative IR spectro-electrochemistry in the C≡C stretching region, combined with density functional theory calculations, afford to make an emphasizing assessment of the close association between the metal-ethynyl termini and the oligophenylamine bridge core as well as their respective involvement in sequential one-electron oxidations of these complexes. The anodic behavior of the homo-bimetallic complexes depends strongly both on the metal center and the length of the oligophenylamine bridge core. The poorly separated first two oxidations of diiron complex 1b are localized on the electronically nearly independent Fe termini. In contrast, diruthenium complex 1a exhibits a significantly delocalized character and a marked electronic communication between the ruthenium centers through the diethynyl-TPA bridge. The ruthenium-ethynyl halves in 2a, separated by the doubly extended and more flexible TPPD bridge core, show a lower degree of electronic coupling, resulting in close-lying first two anodic waves and the NIR electronic absorption of [2a]+ with an indistinctive intervalence charge transfer character. Finally, the third anodic waves in the voltammetric responses of the homo-bimetallic complexes are associated with the concurrent exclusive oxidation of the TPA or TPPD bridge cores.
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Affiliation(s)
- Jing Zhang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Shen-Zhen Guo
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Yu-Bao Dong
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Li Rao
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Jun Yin
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - Guang-Ao Yu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
| | - František Hartl
- Department of Chemistry, University of Reading , Whiteknights, Reading RG6 6AD, U.K
| | - Sheng Hua Liu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , Wuhan 430079, P. R. China
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31
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Wessig P, Schulze T, Pfennig A, Weidner SM, Prentzel S, Schlaad H. Thiol–ene polymerization of oligospiroketal rods. Polym Chem 2017. [DOI: 10.1039/c7py01569k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The nucleophilic thiol–ene (thia-Michael) reaction between molecular rods bearing terminal thiols and bis-maleimides was investigated.
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Affiliation(s)
- Pablo Wessig
- Institute of Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
| | - Tanja Schulze
- Institute of Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
| | | | - Steffen M. Weidner
- 1.3 Structure Analysis
- Federal Institute for Material Research and Testing (BAM)
- 12489 Berlin
- Germany
| | - Sascha Prentzel
- Institute of Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
| | - Helmut Schlaad
- Institute of Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
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32
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Eisold U, Behrends N, Wessig P, Kumke MU. Rigid Rod-Based FRET Probes for Membrane Sensing Applications. J Phys Chem B 2016; 120:9935-43. [PMID: 27559760 DOI: 10.1021/acs.jpcb.6b07285] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Oligospirothioketal (OSTK) rods are presented as an adjustable scaffold for optical membrane probes. The OSTK rods are readily incorporated into lipid bilayers due to their hydrophobic backbones. Because of their high length-over-diameter aspect ratio, only a minimal disturbance of the lipid bilayer is caused. OSTK rods show outstanding rigidity and allow defined labeling with fluorescent dyes, yielding full control of the orientation between the dye and OSTK skeleton. This allows the construction of novel Förster resonance energy transfer probes with highly defined relative orientations of the transition dipole moments of the donor and acceptor dyes and makes the class of OSTK probes a powerful, flexible toolbox for optical biosensing applications. Data on steady-state and time-resolved fluorescence experiments investigating the incorporation of coumarin- and [1,3]dioxolo[4,5-f][1,3]benzo-dioxole-labeled OSTKs in large unilamellar vesicles are presented as a show case.
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Affiliation(s)
- Ursula Eisold
- Physical Chemistry and ‡Bioorganic Chemistry, University of Potsdam, Institute of Chemistry , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Nicole Behrends
- Physical Chemistry and ‡Bioorganic Chemistry, University of Potsdam, Institute of Chemistry , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Pablo Wessig
- Physical Chemistry and ‡Bioorganic Chemistry, University of Potsdam, Institute of Chemistry , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Michael U Kumke
- Physical Chemistry and ‡Bioorganic Chemistry, University of Potsdam, Institute of Chemistry , Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
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33
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An efficient synthesis of carboranyl tetrazoles via alkylation of 5-R-1H-tetrazoles with allylcarboranes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Quan Y, Tang C, Xie Z. Palladium catalyzed regioselective B-C(sp) coupling via direct cage B-H activation: synthesis of B(4)-alkynylated o-carboranes. Chem Sci 2016; 7:5838-5845. [PMID: 30034724 PMCID: PMC6024241 DOI: 10.1039/c6sc00901h] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/12/2016] [Indexed: 01/16/2023] Open
Abstract
Pd-catalyzed carboxylic acid guided regioselective alkynylation of cage B(4)-H bonds in o-carboranes has been achieved for the first time using two different catalytic systems. In the presence of 5 mol% Pd(OAc)2 and 3 equiv. of AgOAc, the reaction of 1-COOH-2-R1-C2B10H10 with R3SiC[triple bond, length as m-dash]CBr in ClCH2CH2Cl gives 4-(R3SiC[triple bond, length as m-dash]C)-2-R1-o-C2B10H10 in moderate to high yields. This reaction is compatible with alkynes possessing sterically bulky silyl groups such as iPr3Si or t BuMe2Si. Meanwhile, another catalytic system of Pd(OAc)2/AgOAc/K2HPO4 can catalyze the direct B(4)-alkynylation of 1-COOH-2-R1-C2B10H10 with terminal alkynes R2C[triple bond, length as m-dash]CH in moderate to high yields. The latter has a broader substrate scope from bulky silyl to aromatic to carboranyl substituents. Desilylation of the resultant products affords carboranyl acetylene 4-(HC[triple bond, length as m-dash]C)-2-R1-o-C2B10H10 which can undergo further transformations such as Sonogashira coupling, dimerization and click reactions. It is suggested that the above two catalytic systems may proceed via Pd(ii)-Pd(iv)-Pd(ii) and Pd(ii)-Pd(0)-Pd(ii) catalytic cycles, respectively. In addition, the silver salt is found to promote the decarboxylation reaction and thereby controls the mono-selectivity.
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Affiliation(s)
- Yangjian Quan
- Department of Chemistry , State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin N. T. , Hong Kong , China .
| | - Cen Tang
- Department of Chemistry , State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin N. T. , Hong Kong , China .
| | - Zuowei Xie
- Department of Chemistry , State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin N. T. , Hong Kong , China .
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35
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Hu F, Lalancette R, Szostak M. Structural Characterization of N-Alkylated Twisted Amides: Consequences for Amide Bond Resonance and N−C Cleavage. Angew Chem Int Ed Engl 2016; 55:5062-6. [DOI: 10.1002/anie.201600919] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Feng Hu
- Department of Chemistry; Rutgers University; 73 Warren Street Newark NJ 07102 USA
| | - Roger Lalancette
- Department of Chemistry; Rutgers University; 73 Warren Street Newark NJ 07102 USA
| | - Michal Szostak
- Department of Chemistry; Rutgers University; 73 Warren Street Newark NJ 07102 USA
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36
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Hu F, Lalancette R, Szostak M. Structural Characterization of N-Alkylated Twisted Amides: Consequences for Amide Bond Resonance and N−C Cleavage. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600919] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Feng Hu
- Department of Chemistry; Rutgers University; 73 Warren Street Newark NJ 07102 USA
| | - Roger Lalancette
- Department of Chemistry; Rutgers University; 73 Warren Street Newark NJ 07102 USA
| | - Michal Szostak
- Department of Chemistry; Rutgers University; 73 Warren Street Newark NJ 07102 USA
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37
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Ackermann K, Giannoulis A, Cordes DB, Slawin AMZ, Bode BE. Assessing dimerisation degree and cooperativity in a biomimetic small-molecule model by pulsed EPR. Chem Commun (Camb) 2016; 51:5257-60. [PMID: 25587579 DOI: 10.1039/c4cc08656b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pulsed electron paramagnetic resonance (EPR) spectroscopy is gaining increasing importance as a complementary biophysical technique in structural biology. Here, we describe the synthesis, optimisation, and EPR titration studies of a spin-labelled terpyridine Zn(II) complex serving as a small-molecule model system for tuneable dimerisation.
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Affiliation(s)
- K Ackermann
- EaStCHEM School of Chemistry, Biomedical Sciences Research Complex and Centre of Magnetic Resonance, University of St Andrews, North Haugh, St Andrews KY16 9ST, UK.
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38
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Wessig P, Gerngroß M, Freyse D, Bruhns P, Przezdziak M, Schilde U, Kelling A. Molecular Rods Based on Oligo-spiro-thioketals. J Org Chem 2016; 81:1125-36. [DOI: 10.1021/acs.joc.5b02670] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Wessig
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - M. Gerngroß
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - D. Freyse
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - P. Bruhns
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - M. Przezdziak
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - U. Schilde
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - A. Kelling
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
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39
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Lee S, Mori H, Lee T, Lim M, Osuka A, Kim D. A very rapid electronic relaxation process in a highly conjugated Zn(ii)porphyrin–[26]hexaphyrin–Zn(ii)porphyrin hybrid tape. Phys Chem Chem Phys 2016; 18:3244-9. [DOI: 10.1039/c5cp07417g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate that the electronic deactivation overtakes the vibrational relaxation processes in the energy relaxation processes from the initially excited vibronic state manifolds in highly conjugated molecular systems.
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Affiliation(s)
- Sangsu Lee
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry
- Yonsei University
- Seoul 120-749
- Korea
| | - Hirotaka Mori
- Department of Chemistry and Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Taegon Lee
- Department of Chemistry and Chemistry Institute of Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Manho Lim
- Department of Chemistry and Chemistry Institute of Functional Materials
- Pusan National University
- Busan 609-735
- Korea
| | - Atsuhiro Osuka
- Department of Chemistry and Graduate School of Science
- Kyoto University
- Kyoto 606-8502
- Japan
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry
- Yonsei University
- Seoul 120-749
- Korea
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40
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Boldog I, Bereciartua PJ, Bulánek R, Kučeráková M, Tomandlová M, Dušek M, Macháček J, De Vos D, Baše T. 10-Vertex closo-carborane: a unique ligand platform for porous coordination polymers. CrystEngComm 2016. [DOI: 10.1039/c5ce02501j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Xiao XS, Zou C, Guan X, Yang C, Lu W, Che CM. Homoleptic gold(i) N-heterocyclic allenylidene complexes: excited-state properties and lyotropic chromonics. Chem Commun (Camb) 2016; 52:4983-6. [DOI: 10.1039/c5cc09571a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Phosphorescent Au(i) bis(N-heterocyclic allenylidene) complexes exhibit panchromatic transient absorption upon electronic photo-excitation and can self-organize into lyotropic chromonic mesophases in aqueous solutions.
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Affiliation(s)
- Xin-Shan Xiao
- State Key Laboratory of Synthetic Chemistry
- HKU-CAS Joint Laboratory on New Materials, and Department of Chemistry
- The University of Hong Kong
- Hong Kong SAR
- P. R. China
| | - Chao Zou
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen 518055
- P. R. China
| | - Xiangguo Guan
- State Key Laboratory of Synthetic Chemistry
- HKU-CAS Joint Laboratory on New Materials, and Department of Chemistry
- The University of Hong Kong
- Hong Kong SAR
- P. R. China
| | - Chen Yang
- State Key Laboratory of Synthetic Chemistry
- HKU-CAS Joint Laboratory on New Materials, and Department of Chemistry
- The University of Hong Kong
- Hong Kong SAR
- P. R. China
| | - Wei Lu
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen 518055
- P. R. China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry
- HKU-CAS Joint Laboratory on New Materials, and Department of Chemistry
- The University of Hong Kong
- Hong Kong SAR
- P. R. China
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Abstract
The increasing difficulties of meeting ‘Moore’s Law’ rates of progress in conventional semiconductor electronics, coupled with the advent of methods capable of measuring the electronic properties of single molecules in a laboratory setting, have seen a surge of activity in the field of molecular electronics over the last decade. However, the concepts of molecular electronics are far from new, and the basic premise and ideas of molecular electronics have been shadowing those of solid-state semiconductor electronics since the middle of the 20th century. In this Primer Review, we introduce the topic of molecular electronics, drawing on some of the earliest expressions of the fundamental concepts, and summarizing key concepts to provide the interested reader with an entry to this fascinating field of science and emerging technology.
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43
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Li Y, Blacque O, Fox T, Luber S, Polit W, Winter RF, Venkatesan K, Berke H. Electronic communication in phosphine substituted bridged dirhenium complexes – clarifying ambiguities raised by the redox non-innocence of the C4H2- and C4-bridges. Dalton Trans 2016; 45:5783-99. [DOI: 10.1039/c5dt04768d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dinuclear rhenium complexes with C4H2- or C4- bridges can show open or closed shell structures.
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Affiliation(s)
- Yan Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - Olivier Blacque
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - Thomas Fox
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - Sandra Luber
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - Walther Polit
- Fachbereich Chemie der Universität Konstanz
- D-78457 Konstanz
- Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz
- D-78457 Konstanz
- Germany
| | | | - Heinz Berke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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44
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Castellano M, Ruiz-García R, Cano J, Ferrando-Soria J, Pardo E, Fortea-Pérez FR, Stiriba SE, Barros WP, Stumpf HO, Cañadillas-Delgado L, Pasán J, Ruiz-Pérez C, de Munno G, Armentano D, Journaux Y, Lloret F, Julve M. Metallosupramolecular approach toward multifunctional magnetic devices for molecular spintronics. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.05.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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45
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Singh S, Aggarwal A, Bhupathiraju NVSDK, Arianna G, Tiwari K, Drain CM. Glycosylated Porphyrins, Phthalocyanines, and Other Porphyrinoids for Diagnostics and Therapeutics. Chem Rev 2015; 115:10261-306. [PMID: 26317756 PMCID: PMC6011754 DOI: 10.1021/acs.chemrev.5b00244] [Citation(s) in RCA: 358] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Sunaina Singh
- Department of Natural Sciences, LaGuardia Community College of the City University of New York, Long Island City, New York 11101, United States
| | - Amit Aggarwal
- Department of Natural Sciences, LaGuardia Community College of the City University of New York, Long Island City, New York 11101, United States
| | - N. V. S. Dinesh K. Bhupathiraju
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, New York, New York 10065, United States
| | - Gianluca Arianna
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, New York, New York 10065, United States
| | - Kirran Tiwari
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, New York, New York 10065, United States
| | - Charles Michael Drain
- Department of Chemistry and Biochemistry, Hunter College of the City University of New York, New York, New York 10065, United States
- The Rockefeller University, New York, New York 10065, United States
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46
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Wessig P, Budach D, Thünemann AF. Dendrimers with Oligospiroketal (OSK) Building Blocks: Synthesis and Properties. Chemistry 2015; 21:10466-71. [PMID: 26094735 DOI: 10.1002/chem.201501386] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Indexed: 11/10/2022]
Abstract
The development of novel dendrimers containing oligospiroketal (OSK) rods as building blocks is described. The linkage between the core unit (CU), branching units (BU), and OSK rods relies on the CuAAC reaction between terminal alkynes and azides. Two different strategies of dendrimer synthesis were investigated and it was found that the convergent approach is clearly superior to the divergent one. SAXS measurements and MD simulations indicate that the obtained dendrimer features a globular structure with very low density. Obviously, the OSK rods stabilize a rather loose mass-fractal structure.
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Affiliation(s)
- Pablo Wessig
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Germany), Fax: (+49) 3319775065 http://ag-wessig.chem.uni-potsdam.de.
| | - Dennis Budach
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Germany), Fax: (+49) 3319775065 http://ag-wessig.chem.uni-potsdam.de
| | - Andreas F Thünemann
- Bundesanstalt für Materialforschung und -prüfung Unter den Eichen 87, 12205 Berlin (Germany)
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47
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Kaszyński P, Ringstrand B. Functionalization ofcloso-Borates via Iodonium Zwitterions. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411858] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Kaszyński P, Ringstrand B. Functionalization ofcloso-Borates via Iodonium Zwitterions. Angew Chem Int Ed Engl 2015; 54:6576-81. [DOI: 10.1002/anie.201411858] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 03/04/2015] [Indexed: 11/08/2022]
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49
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Rahman MM, Younus M, Ogawa A. Synthesis of the First Example of Selenium‐Containing Platinum(II)–Alkenylarylalkynyl Complexes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Md. Mostafizur Rahman
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1‐1 Gakuen‐cho, Nakaku, Sakai, Osaka 599‐8531, Japan, http://www.osakafu‐u.ac.jp
- Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh, http://www.sust.edu
| | - Muhammad Younus
- Department of Chemistry, School of Physical Sciences, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh, http://www.sust.edu
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1‐1 Gakuen‐cho, Nakaku, Sakai, Osaka 599‐8531, Japan, http://www.osakafu‐u.ac.jp
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50
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Wessig P, Merkel R, Müller P. Articulated rods - a novel class of molecular rods based on oligospiroketals (OSK). Beilstein J Org Chem 2015; 11:74-84. [PMID: 25670995 PMCID: PMC4311589 DOI: 10.3762/bjoc.11.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 01/08/2015] [Indexed: 11/23/2022] Open
Abstract
We developed a new type of molecular rods consisting of two (or more) rigid units linked by a flexible joint. Consequently we called these constructs articulated rods (ARs). The syntheses of ARs were carried out by a flexible and modular approach providing access to a number of compounds with various functionalizations in terminal positions. First applications were presented with pyrene, cinnamoyl and anthracenyl labelled ARs.
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Affiliation(s)
- Pablo Wessig
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24–25, D-14476 Potsdam, Germany
| | - Roswitha Merkel
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24–25, D-14476 Potsdam, Germany
| | - Peter Müller
- Institut für Biologie/Molekulare Biophysik, Humboldt Universität zu Berlin, Invalidenstr. 42, D-10115 Berlin, Germany
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