1
|
Liu Y, Resch SG, Chen H, Dechert S, Demeshko S, Bill E, Ye S, Meyer F. Fully Delocalized Mixed-Valent Cu 1.5 Cu 1.5 Complex: Strong Cu-Cu interaction and Fast Electron Self-Exchange Rate Despite Large Structural Changes. Angew Chem Int Ed Engl 2023; 62:e202215840. [PMID: 36504436 DOI: 10.1002/anie.202215840] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022]
Abstract
A flexible macrocyclic ligand with two tridentate {CNC} compartments can host two Cu ions in reversibly interconvertible states, CuI CuI (1) and mixed-valent Cu1.5 Cu1.5 (2). They were characterized by XRD and multiple spectroscopic methods, including EPR, UV/Vis absorption and MCD, in combination with TD-DFT and CASSCF calculations. 2 features a short Cu⋅⋅⋅Cu distance (≈2.5 Å; compared to ≈4.0 Å in 1) and a very high delocalization energy of 13 000 cm-1 , comparable to the mixed-valent state of the biological CuA site. Electron self-exchange between 1 and 2 is rapid despite large structural reorganization, and is proposed to proceed via a sequential mechanism involving an active conformer of 1, viz. 1'; the latter has been characterized by XRD. Such electron transfer (ET) process is reminiscent of the conformationally gated ET proposed for biological systems. This redox couple is a unique pair of flexible dicopper complexes, achieving fast electron self-exchange closely related to the function of the CuA site.
Collapse
Affiliation(s)
- Yang Liu
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Stefan G Resch
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Haowei Chen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Sebastian Dechert
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany
| | - Eckhard Bill
- Department of Inorganic Spectroscopy, Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34-36, 45470, Mülheim an der Ruhr, Germany
| | - Shengfa Ye
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Franc Meyer
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany
| |
Collapse
|
2
|
Henfling S, Kultaeva A, Pöppl A, Klose J, Kersting B, Domasevitch KV, Krautscheid H. Proton and Electron Transfer in the Formation of a Copper Dithiolene-Based Coordination Polymer. Inorg Chem 2021; 60:9008-9018. [PMID: 34077201 DOI: 10.1021/acs.inorgchem.1c00914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal bis(dithiolene) complexes are promising building blocks for electrically conductive coordination polymers. N-Heterocyclic dithiolene complexes allow their cross-linking via the coordination of N-donor atoms to additional transition metal ions. In this study, we present the formal copper(II) and copper(III) 6,7-quinoxalinedithiolene complexes [Cu(qdt)2]- and [Cu(qdt)2]2- (qdt2-: 6,7-quinoxalinedithiolate), as well as the 2D coordination polymer Cu[Cu(Hqdt)(qdt)] (3). The dithiolene complexes were isolated as (Bu4N)2[Cu(qdt)2] (1), Na[Cu(qdt)2]·4H2O (2a), [Na(acetone)4][Cu(qdt)2] (2b), and [Ni(MeOH)6][Cu(qdt)2]2·2H2O (2c). Their crystal structures reveal nearly planar complexes with a high tendency of π-stacking. For a better understanding of their coordination behavior, the electronic properties are investigated by UV-vis-NIR spectroscopy, cyclic voltammetry, and DFT simulations. The synthesis of the 2D coordination polymer 3 involves the reduction and protonation of the monoanionic copper(III) complex. A combination of powder X-ray diffraction, magnetic susceptibility measurements, as well as IR and EPR spectroscopy confirm that formal [CuII(Hqdt)(qdt)]- units link trigonal planar copper(I) atoms to a dense 2D coordination polymer. The electrical conductivity of 3 at room temperature is 2 × 10-7 S/cm. Temperature dependent conductivity measurements confirm the semiconducting behavior of 3 with an Arrhenius derived activation energy of 0.33 eV. The strong absorption of 3 in the visible and NIR regions of the spectrum is caused by the small optical band gap of Eg,opt = 0.65 eV, determined by diffuse reflectance spectroscopy. This study sheds light on the coordination chemistry of N-heterocyclic dithiolene complexes and may serve as a reference for the future design and synthesis of dithiolene-based coordination polymers with interesting electrical and magnetic properties.
Collapse
Affiliation(s)
- Stefan Henfling
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Anastasia Kultaeva
- Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig, Germany.,Faculty of Chemistry and Biochemistry, Ruhr University Bochum, D-44801 Bochum, Germany
| | - Andreas Pöppl
- Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig, Germany
| | - Jennifer Klose
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Berthold Kersting
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Kostiantyn V Domasevitch
- Department of Inorganic Chemistry, University of Kiev, Volodimirska Street 64, UA-25033 Kiev, Ukraine
| | - Harald Krautscheid
- Institute for Inorganic Chemistry, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| |
Collapse
|
3
|
Esmieu C, Orio M, Mangue J, Pécaut J, Ménage S, Torelli S. Valence Localization at a Bio-inspired Mixed-Valent {Cu2
S}2+
Motif upon Solvation in Acetonitrile: Effect on Nitrous Oxide Reductase (N2
Or) Activity. Chemistry 2017; 24:5060-5063. [DOI: 10.1002/chem.201704737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Charlène Esmieu
- Univ. Grenoble Alpes; CEA, CNRS, BIG-LCBM, UMR5249; 38000 Grenoble France
| | - Maylis Orio
- Institut des Sciences Moléculaires de Marseille; Aix Marseille Université, CNRS, Centrale Marseille, ISM2 UMR 7313; 13097 Marseille France
| | - Jordan Mangue
- Univ. Grenoble Alpes; CEA, CNRS, BIG-LCBM, UMR5249; 38000 Grenoble France
| | - Jacques Pécaut
- Univ. Grenoble Alpes; CEA, CNRS, INAC-SyMMES; 38000 Grenoble France
| | - Stéphane Ménage
- Univ. Grenoble Alpes; CEA, CNRS, BIG-LCBM, UMR5249; 38000 Grenoble France
| | - Stéphane Torelli
- Univ. Grenoble Alpes; CEA, CNRS, BIG-LCBM, UMR5249; 38000 Grenoble France
| |
Collapse
|
4
|
Hollmann K, Oppermann A, Witte M, Li S, Amen M, Flörke U, Egold H, Henkel G, Herres-Pawlis S. Copper(I) Complexes with Thiourea Derivatives as Ligands: Revealing Secrets of Their Bonding Scheme. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601547] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Katharina Hollmann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Alexander Oppermann
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Matthias Witte
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Maike Amen
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Ulrich Flörke
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Hans Egold
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Gerald Henkel
- Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Sonja Herres-Pawlis
- RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| |
Collapse
|
5
|
Oppermann A, Wehrhahn C, Flörke U, Herres-Pawlis S, Henkel G. Direct Electrochemical Synthesis of an Unusual Complex Salt: Almost Structural Identity - Different Charge. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201600408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alexander Oppermann
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Christoph Wehrhahn
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Ulrich Flörke
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Gerald Henkel
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| |
Collapse
|
6
|
Back O, Leppin J, Förster C, Heinze K. Photochemistry and Redox Chemistry of an Unsymmetrical Bimetallic Copper(I) Complex. Inorg Chem 2016; 55:9653-9662. [DOI: 10.1021/acs.inorgchem.6b01400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Oliver Back
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Jana Leppin
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Christoph Förster
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| |
Collapse
|
7
|
Oppermann A, Dick R, Wehrhahn C, Flörke U, Herres-Pawlis S, Henkel G. Copper(I) Thiolate Heteroadamantane Cage Structures with Relevance to Metalloproteins. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600247] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander Oppermann
- Fachgruppe Chemie; RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Regina Dick
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Christoph Wehrhahn
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Ulrich Flörke
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Sonja Herres-Pawlis
- Fachgruppe Chemie; RWTH Aachen University; Institut für Anorganische Chemie; Landoltweg 1 52074 Aachen Germany
| | - Gerald Henkel
- Department of Chemistry; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| |
Collapse
|
8
|
Neuba A, Rohrmüller M, Hölscher R, Schmidt WG, Henkel G. A panel of peralkylated sulfur–guanidine type bases: Novel pro-ligands for use in biomimetic coordination chemistry. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
9
|
Morgada MN, Abriata LA, Zitare U, Alvarez-Paggi D, Murgida DH, Vila AJ. Control of the Electronic Ground State on an Electron-Transfer Copper Site by Second-Sphere Perturbations. Angew Chem Int Ed Engl 2014; 53:6188-92. [DOI: 10.1002/anie.201402083] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 02/24/2014] [Indexed: 01/07/2023]
|
10
|
Morgada MN, Abriata LA, Zitare U, Alvarez-Paggi D, Murgida DH, Vila AJ. Control of the Electronic Ground State on an Electron-Transfer Copper Site by Second-Sphere Perturbations. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
11
|
|