1
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Franzen JH, Wilm LFB, Rotering P, Wurst K, Seidl M, Dielmann F. Electron-rich pyridines with para-N-heterocyclic imine substituents: ligand properties and coordination to CO 2, SO 2, BCl 3 and Pd II complexes. Dalton Trans 2024; 53:11876-11883. [PMID: 38953467 DOI: 10.1039/d4dt01399a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Electron-rich pyridines with π donor groups at the para position play an important role as nucleophiles in organocatalysis, but their ligand properties and utilization in coordination chemistry have received little attention. Herein, we report the synthesis of two electron-rich pyridines 1 and 2 bearing N-heterocyclic imine groups at the para position and explore their coordination chemistry. Experimental and computational methods were used to assess the donor ability of the new pyridines showing that they are stronger donors than aminopyridines and guanidinyl pyridines, and that the nature of the N-heterocyclic backbone has a strong influence on the pyridine donor strength. Coordination compounds with Lewis acids including the CO2, SO2, BCl3 and PdII ions were synthesized and characterized. Despite the ambident character of the new pyridines, coordination preferentially occurs at the pyridine-N atom. Methyl transfer experiments reveal that 1 and 2 can act as demethylation reagents.
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Affiliation(s)
- Jonas H Franzen
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Lukas F B Wilm
- Institut für Anorganische und Analytische Chemie, Universität Münster Corrensstrasse 30, 48149 Münster, Germany
| | - Philipp Rotering
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Michael Seidl
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Fabian Dielmann
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
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2
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Ebert M, Lange A, Müller M, Wuckert E, Gießelmann F, Klamroth T, Zens A, Taubert A, Laschat S. Counterion effects on the mesomorphic and electrochemical properties of guanidinium salts. Phys Chem Chem Phys 2024; 26:11988-12002. [PMID: 38573315 DOI: 10.1039/d4cp00356j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Ionic liquid crystals (ILCs) combine the ion mobility of ionic liquids with the order and self-assembly of thermotropic mesophases. To understand the role of the anion in ILCs, wedge-shaped arylguanidinium salts with tetradecyloxy side chains were chosen as benchmark systems and their liquid crystalline self-assembly in the bulk phase as well as their electrochemical behavior in solution were studied depending on the anion. Differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and X-ray diffraction (WAXS, SAXS) experiments revealed that for spherical anions, the phase width of the hexagonal columnar mesophase increased with the anion size, while for non-spherical anions, the trends were less clear cut. Depending on the anion, the ILCs showed different stability towards electrochemical oxidation and reduction with the most stable being the PF6 based compound. Cyclic voltammetry (CV) and density functional theory (DFT) calculations suggest a possible contribution of the guanidinium cation to the oxidation processes.
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Affiliation(s)
- Max Ebert
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart 70569, Germany.
| | - Alyna Lange
- Institut für Chemie, Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, Golm 14476, Germany.
| | - Michael Müller
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart 70569, Germany.
| | - Eugen Wuckert
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart 70569, Germany.
| | - Frank Gießelmann
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart 70569, Germany.
| | - Tillmann Klamroth
- Institut für Chemie, Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, Golm 14476, Germany.
| | - Anna Zens
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart 70569, Germany.
| | - Andreas Taubert
- Institut für Chemie, Universität Potsdam, Institut für Chemie, Karl-Liebknecht-Str. 24-25, Golm 14476, Germany.
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart 70569, Germany.
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3
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Aragoni MC, Cherchi MF, Lippolis V, Pintus A, Podda E, Slawin AMZ, Woollins JD, Arca M. Self-Assembly of Supramolecular Architectures Driven by σ-Hole Interactions: A Halogen-Bonded 2D Network Based on a Diiminedibromido Gold(III) Complex and Tribromide Building Blocks. Molecules 2022; 27:molecules27196289. [PMID: 36234826 PMCID: PMC9571214 DOI: 10.3390/molecules27196289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
The reaction of the complex [Au(phen)Br2](PF6) (phen = 1,10-phenanthroline) with molecular dibromine afforded {[Au(phen)Br2](Br3)}∞ (1). Single crystal diffraction analysis showed that the [Au(phen)Br2]+ complex cations were bridged by asymmetric tribromide anions to form infinite zig-zag chains featuring the motif ···Au–Br···Br–Br–Br···Au–Br···Br–Br–Br···. The complex cation played an unprecedented halogen bonding (XB) donor role engaging type-I and type-II XB noncovalent interactions of comparable strength with symmetry related [Br3]− anions. A network of hydrogen bonds connects parallel chains in an infinite 2D network, contributing to the layered supramolecular architecture. DFT calculations allowed clarification of the nature of the XB interactions, showing the interplay between orbital mixing, analyzed at the NBO level, and electrostatic contribution, explored based on the molecular potential energy (MEP) maps of the interacting synthons.
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Affiliation(s)
- M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
| | - M. Francesca Cherchi
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
| | - Anna Pintus
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
| | - Enrico Podda
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
- Centro Servizi di Ateneo per la Ricerca (CeSAR), Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, UK
| | - J. Derek Woollins
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, UK
- Department of Chemistry, Khalifa University, Abu Dhabi 127788, United Arab Emirates
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 bivio per Sestu, 09042 Monserrato, Italy
- Correspondence:
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4
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Chen T, Dou JH, Yang L, Sun C, Oppenheim JJ, Li J, Dincă M. Dimensionality Modulates Electrical Conductivity in Compositionally Constant One-, Two-, and Three-Dimensional Frameworks. J Am Chem Soc 2022; 144:5583-5593. [PMID: 35290048 DOI: 10.1021/jacs.2c00614] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We reveal here the construction of Ni-based metal-organic frameworks (MOFs) and conjugated coordination polymers (CCPs) with different structural dimensionalities, including closely π-stacked 1D chains (Ni-1D), aggregated 2D layers (Ni-2D), and a 3D framework (Ni-3D), based on 2,3,5,6-tetraamino-1,4-hydroquinone (TAHQ) and its various oxidized forms. These materials have the same metal-ligand composition but exhibit distinct electronic properties caused by different dimensionalities and supramolecular interactions between SBUs, ligands, and structural motifs. The electrical conductivity of these materials spans nearly 8 orders of magnitude, approaching 0.3 S/cm.
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Affiliation(s)
- Tianyang Chen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jin-Hu Dou
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Luming Yang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Chenyue Sun
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Julius J Oppenheim
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jian Li
- Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, Stockholm 10691, Sweden.,Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, Stockholm 10044, Sweden
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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5
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Redox-active ligands: Recent advances towards their incorporation into coordination polymers and metal-organic frameworks. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213891] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Kantlehner W, Tiritiris I, Vettel M, Frey W. Orthoamide und Iminiumsalze, IIC. Darstellung von N-( ω-Ammonioalkyl)- N,N′,N′,N″,N″-peralkylierten Guanidiniumsalzen und N-( ω-Aminoalkyl)- N′,N′,N″,N″-tetramethylguanidinen. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2020. [DOI: 10.1515/znb-2019-0229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
N,N,N′,N′-Tetraalkylchlorformamidiniumchlorides 1a, b react with ω-dimethylaminoalkylamines 19, 20 to give mixtures of N-(ω-dimethylammonioalkyl)-guanidinium salts 12, 13 and N-(ω-dimethylaminoalkyl)-guanidinium salts 21, 22. These mixtures are transformed to mixtures of the ureas 15, 17 and N-(ω-dimethylaminoalkyl)-guanidines 23, 25 on treatment with aqueous sodium hydroxide. The reaction of N-(3-dimethylammoniopropyl)-guanidin 25a with dimethylsulfate in a molar ratio of 1:1 delivers a mixture of the N-(3-dimethylaminopropyl)-N,N,N′,N′,N″,N″-pentamethyl-guanidinium salt 29a and the N-(3-dimethylammoniopropyl)-N,N′,N′,N″,N″-pentamethyl-guanidinium-bis (methylsulfate) 33a. The action of dimethylsulfate on the guanidines 23a, 25a in a molar ratio of 2:1 affords the bisquarternary salts 32a, 33a. Alkylating reagents as methyliodide, benzylbromide, allylbromide and chloroacetonitrile attack N-(2-dimethylaminoethyl)-N′,N′,N″,N″-tetraethylguanidine (23b) in a molar ratio of 1:1 cleanly at the dimethylaminoethylgroup to give the ammonium salts 30a–d. As a strong base the guanidine 23b dehydrochlorinates β-Chlorpropionitrile and chloroacetone under formation of the guanidinium salt 21c. In contrast to this the reaction of ethyl bromoacetate with the N-(2-dimethylaminoethyl)guanidine 23b occurs at the guanidinogroup giving the guanidinium salt 28c. The methylation of the guanidinium chlorides 21a, 22a with dimethyl sulfate affords the bis-quaternary salts 35b, 36b with mixed anions. From the heterocyclic guanidines 14, 16 and the alkylating reagents benzylbromide and ethyl bromoacetate the heterocyclic guanidinium salts 37a, b, 39a, b can be obtained. The reactions with ethyl chloroformiate proceed in an analogous way giving the guanidinium salts 37c, 39c. The N-alkyl-N,N,N′,N′-tetramethyl-(3-ureidopropyl)guanidinium salts 41a, b can be prepared from the N′,N′,N″,N″-tetramethyl-N′′-(3-ureidopropyl) guanidine 17a and the alkylating compounds dimethyl sulfate and benzyl bromide. Several compounds obtained that way were transformed to the corresponding tetraphenyloborates and bis(tetraphenylborates), respectively.
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Affiliation(s)
- Willi Kantlehner
- Institut für Angewandte Forschung, Abteilung Technische Organische Synthesechemie und Katalyseforschung (TOSKA), Hochschule Aalen , Beethovenstr. 1 , D-73430 Aalen , Germany
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Ioannis Tiritiris
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Markus Vettel
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart , Pfaffenwaldring 55 , 70569 Stuttgart , Germany
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7
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Morris TW, Huerfano IJ, Wang M, Wisman DL, Cabelof AC, Din NU, Tempas CD, Le D, Polezhaev AV, Rahman TS, Caulton KG, Tait SL. Multi-electron Reduction Capacity and Multiple Binding Pockets in Metal-Organic Redox Assembly at Surfaces. Chemistry 2019; 25:5565-5573. [PMID: 30746807 DOI: 10.1002/chem.201900002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 02/08/2019] [Indexed: 01/12/2023]
Abstract
Metal-ligand complexation at surfaces utilizing redox-active ligands has been demonstrated to produce uniform single-site metals centers in regular coordination networks. Two key design considerations are the electron storage capacity of the ligand and the metal-coordinating pockets on the ligand. In an effort to move toward greater complexity in the systems, particularly dinuclear metal centers, we designed and synthesized tetraethyltetra-aza-anthraquinone, TAAQ, which has superior electron storage capabilities and four ligating pockets in a diverging geometry. Cyclic voltammetry studies of the free ligand demonstrate its ability to undergo up to a four-electron reduction. Solution-based studies with an analogous ligand, diethyldi-aza-anthraquinone, demonstrate these redox capabilities in a molecular environment. Surface studies conducted on the Au(111) surface demonstrate TAAQ's ability to complex with Fe. This complexation can be observed at different stoichiometric ratios of Fe:TAAQ as Fe 2p core level shifts in X-ray photoelectron spectroscopy. Scanning tunneling microscopy experiments confirmed the formation of metal-organic coordination structures. The striking feature of these structures is their irregularity, which indicates the presence of multiple local binding motifs. Density functional theory calculations confirm several energetically accessible Fe:TAAQ isomers, which accounts for the non-uniformity of the chains.
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Affiliation(s)
- Tobias W Morris
- Departments of Chemistry, Indiana University, Bloomington, IN, 47401, USA
| | - I J Huerfano
- Departments of Chemistry, Indiana University, Bloomington, IN, 47401, USA
| | - Miao Wang
- Department of Physics, Indiana University, Bloomington, IN, 47401, USA
| | - David L Wisman
- Departments of Chemistry, Indiana University, Bloomington, IN, 47401, USA.,NAVSEA Crane, Crane, IN, 47522, USA
| | - Alyssa C Cabelof
- Departments of Chemistry, Indiana University, Bloomington, IN, 47401, USA
| | - Naseem U Din
- Department of Physics, University of Central Florida, Orlando, FL, USA
| | | | - Duy Le
- Department of Physics, University of Central Florida, Orlando, FL, USA
| | | | - Talat S Rahman
- Department of Physics, University of Central Florida, Orlando, FL, USA
| | - Kenneth G Caulton
- Departments of Chemistry, Indiana University, Bloomington, IN, 47401, USA
| | - Steven L Tait
- Departments of Chemistry, Indiana University, Bloomington, IN, 47401, USA.,Department of Physics, Indiana University, Bloomington, IN, 47401, USA
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8
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Adonin SA, Bondarenko MA, Novikov AS, Abramov PA, Plyusnin PE, Sokolov MN, Fedin VP. Halogen bonding-assisted assembly of bromoantimonate(v) and polybromide-bromoantimonate-based frameworks. CrystEngComm 2019. [DOI: 10.1039/c8ce01944d] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Halogen bonding within bromo- and polybromoantimonates(v).
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Affiliation(s)
- Sergey A. Adonin
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | | | | | - Pavel A. Abramov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Pavel E. Plyusnin
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Vladimir P. Fedin
- Nikolaev Institute of Inorganic Chemistry SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
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9
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10
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Gorokh ID, Adonin SA, Sokolov MN, Abramov PA, Korolkov IV, Semitut EY, Fedin VP. Polybromide salts of tetraalkyl and N-heterocyclic cations: New entries into the structural library. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Pascal S, Siri O. Benzoquinonediimine ligands: Synthesis, coordination chemistry and properties. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Luo Z, Liu L, Zhao Q, Li F, Chen J. An Insoluble Benzoquinone‐Based Organic Cathode for Use in Rechargeable Lithium‐Ion Batteries. Angew Chem Int Ed Engl 2017; 56:12561-12565. [DOI: 10.1002/anie.201706604] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Zhiqiang Luo
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Luojia Liu
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Qing Zhao
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Fujun Li
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Jun Chen
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
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13
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Luo Z, Liu L, Zhao Q, Li F, Chen J. An Insoluble Benzoquinone‐Based Organic Cathode for Use in Rechargeable Lithium‐Ion Batteries. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706604] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhiqiang Luo
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Luojia Liu
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Qing Zhao
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Fujun Li
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
| | - Jun Chen
- State Key Laboratory of Elemento-Organic Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China
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14
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Schrempp DF, Schneider E, Kaifer E, Wadepohl H, Himmel HJ. Homo- and Heterobinuclear Cu and Pd Complexes with a Bridging Redox-Active Bisguanidino-Substituted Dioxolene Ligand: Electronic Structure and Metal-Ligand Electron-Transfer. Chemistry 2017; 23:11636-11648. [DOI: 10.1002/chem.201702053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Indexed: 12/17/2022]
Affiliation(s)
- David Fridolin Schrempp
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 275 69120 Heidelberg Germany
| | - Elisa Schneider
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 275 69120 Heidelberg Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 275 69120 Heidelberg Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 275 69120 Heidelberg Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 275 69120 Heidelberg Germany
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15
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Affiliation(s)
- Arne Wagner
- Institute of Inorganic Chemistry, Ruprecht-Karls University Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hans-Jörg Himmel
- Institute of Inorganic Chemistry, Ruprecht-Karls University Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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16
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Sato M, Takeda T, Hoshino N, Akutagawa T. Electronic and crystal structures of 1,2,3-triazole-fused p-benzoquinone derivatives. CrystEngComm 2017. [DOI: 10.1039/c6ce02167k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Nemec V, Lisac K, Stilinović V, Cinčić D. Inorganic bromine in organic molecular crystals: Database survey and four case studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Wiesner S, Walter P, Wagner A, Kaifer E, Himmel HJ. Photochemical Reductive C-C Coupling with a Guanidine Electron Donor. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600978] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sven Wiesner
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Petra Walter
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Arne Wagner
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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19
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van der Meer M, Rechkemmer Y, Frank U, Breitgoff FD, Hohloch S, Su CY, Neugebauer P, Marx R, Dörfel M, van Slageren J, Sarkar B. A Dicobalt Complex with an Unsymmetrical Quinonoid Bridge Isolated in Three Units of Charge: A Combined Structural, (Spectro)electrochemical, Magnetic and Spectroscopic Study. Chemistry 2016; 22:13884-13893. [DOI: 10.1002/chem.201601579] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Margarethe van der Meer
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Yvonne Rechkemmer
- Institut für Physikalische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Uta Frank
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Frauke D. Breitgoff
- Institut für Physikalische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Stephan Hohloch
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Cheng-Yong Su
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; Guangzhou 510275 China
| | - Petr Neugebauer
- Institut für Physikalische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Raphael Marx
- Institut für Physikalische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - María Dörfel
- Institut für Physikalische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Joris van Slageren
- Institut für Physikalische Chemie; Universität Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie; Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
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20
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Wiesner S, Wagner A, Kaifer E, Himmel HJ. A Valence Tautomeric Dinuclear Copper Tetrakisguanidine Complex. Chemistry 2016; 22:10438-45. [DOI: 10.1002/chem.201601169] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/18/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Sven Wiesner
- Anorganisch-Chemisches Institut; Ruprecht-Karls Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Arne Wagner
- Anorganisch-Chemisches Institut; Ruprecht-Karls Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut; Ruprecht-Karls Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut; Ruprecht-Karls Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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21
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Hornung J, Hübner O, Kaifer E, Himmel HJ. Bent and twisted: the electronic structure of 2-azapropenylium ions obtained by guanidine oxidation. RSC Adv 2016. [DOI: 10.1039/c6ra04494h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New bis-2-azapropenylium ions are obtained by oxidation of guanidino-substituted aromatic compounds.
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Affiliation(s)
- Julius Hornung
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Olaf Hübner
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
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22
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Bogojeski J, Volbeda J, Bugarčić ŽD, Freytag M, Tamm M. Platinum(ii) complexes with hybrid amine-imidazolin-2-imine ligands and their reactivity toward bio-molecules. NEW J CHEM 2016. [DOI: 10.1039/c5nj03360h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Two new Pt(ii) complexes with imidazolin-2-imines as ancillary ligands were synthesized and characterized and their reactivity toward bio-molecules was tested.
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Affiliation(s)
- Jovana Bogojeski
- Faculty of Science
- University of Kragujevac
- 34000 Kragujevac
- Serbia
| | - Jeroen Volbeda
- Institut für Anorganische und Analytische Chemie
- Technische Universität Braunschweig
- 38106 Braunschweig
- Germany
| | | | - Matthias Freytag
- Institut für Anorganische und Analytische Chemie
- Technische Universität Braunschweig
- 38106 Braunschweig
- Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie
- Technische Universität Braunschweig
- 38106 Braunschweig
- Germany
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23
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Wiesner S, Wagner A, Kaifer E, Himmel HJ. The control of the electronic structure of dinuclear copper complexes of redox-active tetrakisguanidine ligands by the environment. Dalton Trans 2016; 45:15828-15839. [DOI: 10.1039/c6dt02128j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structures of dinuclear copper complexes of the general formula [GFA(CuX2)2], where X = Br or Cl and GFA denotes a redox-active bridging Guanidino-Functionalized Aromatic ligand, were analysed and compared.
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Affiliation(s)
- Sven Wiesner
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Arne Wagner
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
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24
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Wiesner S, Wagner A, Hübner O, Kaifer E, Himmel H. Thermochromism of Cu
I
Tetrakisguanidine Complexes: Reversible Activation of Metal‐to‐Ligand Charge‐Transfer Bands. Chemistry 2015; 21:16494-503. [DOI: 10.1002/chem.201502584] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Sven Wiesner
- Anorganisch‐Chemisches Institut, Ruprecht‐Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐545707
| | - Arne Wagner
- Anorganisch‐Chemisches Institut, Ruprecht‐Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐545707
| | - Olaf Hübner
- Anorganisch‐Chemisches Institut, Ruprecht‐Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐545707
| | - Elisabeth Kaifer
- Anorganisch‐Chemisches Institut, Ruprecht‐Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐545707
| | - Hans‐Jörg Himmel
- Anorganisch‐Chemisches Institut, Ruprecht‐Karls Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221‐545707
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25
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Pattenaude SA, Kuehner CS, Dorfner WL, Schelter EJ, Fanwick PE, Bart SC. Spectroscopic and Structural Elucidation of Uranium Dioxophenoxazine Complexes. Inorg Chem 2015; 54:6520-7. [PMID: 26103211 DOI: 10.1021/acs.inorgchem.5b00855] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Uranium derivatives of a redox-active, dioxophenoxazine ligand, (DOPO(q))2UO2, (DOPO(sq))UI2(THF)2, (DOPO(cat))UI(THF)2, and Cp*U(DOPO(cat))(THF)2 (DOPO = 2,4,6,8-tetra-tert-butyl-1-oxo-1H-phenoxazin-9-olate), have been synthesized from U(VI) and U(III) starting materials. Full characterization of these species show uranium complexes bearing ligands in three different oxidation states. The electronic structures of these complexes have been explored using (1)H NMR and electronic absorption spectroscopies, and where possible, X-ray crystallography and SQUID magnetometry.
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Affiliation(s)
- Scott A Pattenaude
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christopher S Kuehner
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Walter L Dorfner
- ‡P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eric J Schelter
- ‡P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Phillip E Fanwick
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Suzanne C Bart
- †H.C. Brown Laboratory, Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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26
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Herrmann H, Reinmuth M, Wiesner S, Hübner O, Kaifer E, Wadepohl H, Himmel HJ. Urea Azines (Bisguanidines): Electronic Structure, Redox Properties, and Coordination Chemistry. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500228] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Bindewald E, Lorenz R, Hübner O, Brox D, Herten DP, Kaifer E, Himmel HJ. Tetraguanidino-functionalized phenazine and fluorene dyes: synthesis, optical properties and metal coordination. Dalton Trans 2015; 44:3467-85. [DOI: 10.1039/c4dt03572k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Functionalization of phenazine with guanidino groups leads to new highly fluorescent dyes and ligands, and metal coordination is shown to alter significantly the optical properties.
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Affiliation(s)
- Elvira Bindewald
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Roxana Lorenz
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Olaf Hübner
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Dominik Brox
- Cellnetworks Cluster and Inst. for Physical Chemistry
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Dirk-Peter Herten
- Cellnetworks Cluster and Inst. for Physical Chemistry
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- 69120 Heidelberg
- Germany
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28
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Ziesak A, Wesp T, Hübner O, Kaifer E, Wadepohl H, Himmel HJ. Counter-ligand control of the electronic structure in dinuclear copper-tetrakisguanidine complexes. Dalton Trans 2015; 44:19111-25. [DOI: 10.1039/c5dt03270a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Decision-making counter-ligands: a bridging redox-active ligand in a dinuclear copper complex could be either neutral (complex type [CuII-GFA-CuII]) or dicationic (complex type [CuI-GFA-CuI]), depending on the nature of the counter-ligands X.
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Affiliation(s)
- Alexandra Ziesak
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Tobias Wesp
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Olaf Hübner
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut
- Ruprecht-Karls Universität Heidelberg
- 69120 Heidelberg
- Germany
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29
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Stang S, Kaifer E, Himmel HJ. Metal-Free CC Coupling Reactions with Tetraguanidino-Functionalized Pyridines and Light. Chemistry 2014; 20:5288-97. [PMID: 24677701 DOI: 10.1002/chem.201304987] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Simone Stang
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49) 6221-545707
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30
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Klapp LRR, Bruhn C, Leibold M, Siemeling U. Ferrocene-Based Bis(guanidines): Superbases for Tridentate N,Fe,N-Coordination. Organometallics 2013. [DOI: 10.1021/om400454v] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lutz R. R. Klapp
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße
40, 34132 Kassel, Germany
| | - Clemens Bruhn
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße
40, 34132 Kassel, Germany
| | - Michael Leibold
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße
40, 34132 Kassel, Germany
| | - Ulrich Siemeling
- Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße
40, 34132 Kassel, Germany
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31
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Himmel HJ. Guanidinyl-Functionalized Aromatic Compounds (GFAs) - Charge and Spin Density Studies as Starting Points for the Development of a New Class of Redox-active Ligands. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201200496] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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