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Van Stappen C, Van Kuiken BE, Mörtel M, Ruotsalainen KO, Maganas D, Khusniyarov MM, DeBeer S. Correlating Valence and 2p3d RIXS Spectroscopies: A Ligand-Field Study of Spin-Crossover Iron(II). Inorg Chem 2024; 63:7386-7400. [PMID: 38587408 DOI: 10.1021/acs.inorgchem.4c00435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
The molecular spin-crossover phenomenon between high-spin (HS) and low-spin (LS) states is a promising route to next-generation information storage, sensing applications, and molecular spintronics. Spin-crossover complexes also provide a unique opportunity to study the ligand field (LF) properties of a system in both HS and LS states while maintaining the same ligand environment. Presently, we employ complementing valence and core-level spectroscopic methods to probe the electronic excited-state manifolds of the spin-crossover complex [FeII(H2B(pz)2)2phen]0. Light-induced excited spin-state trapping (LIESST) at liquid He temperatures is exploited to characterize magnetic and spectroscopic properties of the photoinduced HS state using SQUID magnetometry and magnetic circular dichroism spectroscopy. In parallel, Fe 2p3d RIXS spectroscopy is employed to examine the ΔS = 0, 1 excited LF states. These experimental studies are combined with state-of-the-art CASSCF/NEVPT2 and CASCI/NEVPT2 calculations characterizing the ground and LF excited states. Analysis of the acquired LF information further supports the notion that the spin-crossover of [FeII(H2B(pz)2)2phen]0 is asymmetric, evidenced by a decrease in eπ in the LS state. The results demonstrate the power of cross-correlating spectroscopic techniques with high and low LF information content to make accurate excited-state assignments, as well as the current capabilities of ab initio theory in interpreting these electronic properties.
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Affiliation(s)
- Casey Van Stappen
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
| | - Benjamin E Van Kuiken
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
- European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Kari O Ruotsalainen
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, 91190 Saint-Aubin, France
| | - Dimitrios Maganas
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany
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Mörtel M, Goodner SJ, Oschwald J, Scheurer A, Drewello T, Khusniyarov MM. Low-spin to low-spin valence tautomeric transition in cobalt bis-dioxolenes. Dalton Trans 2024; 53:4098-4107. [PMID: 38314834 DOI: 10.1039/d3dt03935h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Cobalt dioxolenes are a well-known class of switchable coordination compounds showing intramolecular electron transfer, which is always accompanied by a spin state change at the cobalt center. Here, we present the first example of thermally switchable cobalt bis-dioxolenes where intramolecular electron transfer seems to take place, but the spin state change is suppressed. This leads to the detection of thermal transition between a common ls-CoIII(SQ˙-)(Cat2-) and an extremely rare ls-CoII(SQ˙-)2 electronic state (hs - high-spin, ls - low-spin, SQ˙- - benzosemiquinonate(1-) radical and Cat2- - catecholate(2-)). Parallel to the present work, a similar work but on cobalt mono-dioxolenes has just appeared (Chem. Eur. J., 2023, 29, e202300091), suggesting thermal transition between ls-CoIII(Cat2-) and ls-CoII(SQ˙-) electronic states.
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Affiliation(s)
- Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Germany.
| | - Stephen J Goodner
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Germany.
| | - Johannes Oschwald
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Germany
| | - Andreas Scheurer
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Germany.
| | - Thomas Drewello
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058, Germany
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058, Germany.
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Lvov AG, Koffi Kouame E, Khusniyarov MM. Light-Induced Dyotropic Rearrangement of Diarylethenes: Scope, Mechanism, and Prospects. Chemistry 2023; 29:e202301480. [PMID: 37477021 DOI: 10.1002/chem.202301480] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 07/22/2023]
Abstract
Irreversible two-photon photorearrangement of 1,2-diarylethenes is a unique process providing access to complex 2a1 ,5a-dihydro-5,6-dithiaacenaphthylene (DDA) heterocyclic core. This reaction was serendipitously discovered during studies on photoswitchable diarylethenes and was initially considered as a highly undesired process. However, in recent years, it has been recognized as an efficient photochemical reaction, interesting by itself and as a promising synthetic method for the synthesis of challenging molecules. Herein, we discuss the state-of-the-art in studies on this notable process.
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Affiliation(s)
- Andrey G Lvov
- Irkutsk National Research Technical University, 83, Lermontov St., Irkutsk, 664074, Russia
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk, 664033, Russia
| | - Eric Koffi Kouame
- Irkutsk National Research Technical University, 83, Lermontov St., Irkutsk, 664074, Russia
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk, 664033, Russia
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058, Erlangen, Germany
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Klementyeva SV, Woern K, Schrenk C, Zhang M, Khusniyarov MM, Schnepf A. [(thf) 5Ln(Ge 9{Si(SiMe 3) 3} 2)] (Ln = Eu, Sm, Yb): Capping Metalloid Germanium Cluster with Lanthanides. Inorg Chem 2023; 62:5614-5621. [PMID: 36967670 DOI: 10.1021/acs.inorgchem.3c00165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
We report the synthesis of three neutral complexes with different coordination modes of a di-silylated metalloid germanium cluster to divalent lanthanides [(thf)5Ln(ηn-Ge9(Hyp)2)] (Ln = Yb (1, n = 1); Eu (2, n = 2, 3), Sm (3, n = 2, 3); Hyp = Si(SiMe3)3) by the salt metathesis of LnI2 with K2[Ge9(Hyp)2] in THF. The complexes were characterized by elemental analysis, nuclear magnetic resonance and UV-vis-NIR spectroscopy, and single-crystal X-ray diffraction. In thf solution, the formation of contact or solvate-separated ion pairs depending on the concentration is assumed. Compound 2 exhibits a blue luminescence typical for Eu2+. The solid-state magnetic measurements of compounds 2 and 3 confirm the presence of divalent europium and samarium, respectively.
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Klementyeva SV, Schrenk C, Zhang M, Khusniyarov MM. Metalloid germanium cluster shears for lanthanide diiodides. Dalton Trans 2023; 52:4669-4673. [PMID: 36988429 DOI: 10.1039/d3dt00578j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
We report the synthesis and characterization of ionic compounds [(thf)4YbI]2[Ge9(Hyp)3]2 (1) and [(thf)5LnI]4[Ge9(Hyp)3]4 (Ln = Eu (2), Sm (3)), (Hyp = Si(SiMe3)3). All compounds were examined by UV-Vis spectroscopy and...
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Affiliation(s)
- Svetlana V Klementyeva
- Chemistry Department, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Claudio Schrenk
- Chemistry Department, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
| | - Minghui Zhang
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
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Abstract
Switchable valence tautomeric metal complexes have been long suggested for applications as chemosensors. However, no such molecular sensors have been yet reported. Here, we present a concept for sensing and the first prototype molecular sensor based on valence tautomeric cobalt-dioxolenes. A valence tautomeric cobalt-dioxolene complex [ls-CoIII(SQ•)(Cat)(stypy)2] ⇄ [hs-CoII(SQ•)2(stypy)2] 1 (ls = low spin, hs = high spin, Cat = 3,5-di-tert-butylcatecholate(2-), SQ = one-electron oxidized, benzosemiquinone(1-) form of Cat, stypy = trans-4-styrylpyridine) has been used as a molecular sensor. The lability of axial stypy ligands of 1 in solution allows us to exchange stypy ligands by dimethyl sulfoxide and simple pyridine analytes in a controllable way, which triggers colorimetric and magnetic responses.
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Affiliation(s)
- Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Johannes Oschwald
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany
| | - Andreas Scheurer
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Thomas Drewello
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 3, 91058 Erlangen, Germany
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
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7
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Klementyeva SV, Schrenk C, Zhang M, Khusniyarov MM, Schnepf A. (thf) 2Ln(Ge 9{Si(SiMe 3) 3} 3) 2 (Ln = Eu, Sm): the first coordination of metalloid germanium clusters to lanthanides. Chem Commun (Camb) 2021; 57:4730-4733. [PMID: 33977949 DOI: 10.1039/d1cc01151k] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We report the synthesis, structure and magnetic properties of the first rare earth complexes of metalloid group 14 clusters [(thf)2Ln(Ge9Hyp3)2] (Ln = Eu, Sm, Hyp = Si(SiMe3)3). X-Ray crystallographic analysis and DFT calculations reveal a novel η2-coordination mode of the Ge9Hyp3 units and a slight distortion of the Ge9 cage.
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Affiliation(s)
- Svetlana V Klementyeva
- Chemistry Department, University Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany.
| | - Claudio Schrenk
- Chemistry Department, University Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany.
| | - Minghui Zhang
- Department of Chemistry and Pharmacy Friedrich-Alexander University Erlangen-Nürnberg (FAU) Egerlandstraße 1, Erlangen 91058, Germany
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy Friedrich-Alexander University Erlangen-Nürnberg (FAU) Egerlandstraße 1, Erlangen 91058, Germany
| | - Andreas Schnepf
- Chemistry Department, University Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany.
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Sorsche D, Miehlich ME, Searles K, Gouget G, Zolnhofer EM, Fortier S, Chen CH, Gau M, Carroll PJ, Murray CB, Caulton KG, Khusniyarov MM, Meyer K, Mindiola DJ. Unusual Dinitrogen Binding and Electron Storage in Dinuclear Iron Complexes. J Am Chem Soc 2020; 142:8147-8159. [DOI: 10.1021/jacs.0c01488] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Dieter Sorsche
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Matthias E. Miehlich
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Keith Searles
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Guillaume Gouget
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Eva M. Zolnhofer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Skye Fortier
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Chun-Hsing Chen
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Michael Gau
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J. Carroll
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Christopher B. Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kenneth G. Caulton
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Marat M. Khusniyarov
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Karsten Meyer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Daniel J. Mindiola
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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9
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Lvov AG, Yadykov AV, Lyssenko KA, Heinemann FW, Shirinian VZ, Khusniyarov MM. Reversible Shifting of a Chemical Equilibrium by Light: The Case of Keto-Enol Tautomerism of a β-Ketoester. Org Lett 2020; 22:604-609. [PMID: 31909627 DOI: 10.1021/acs.orglett.9b04376] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Manipulating the equilibrium between a ketone and an enol by light opens up ample opportunities in material chemistry and photopharmacology. By incorporating β-ketoester into the ethene bridge of a photoactive diarylethene, we achieved reversible light-induced tautomerization to give thermally stable enol. In a pristine state, the tautomeric equilibrium is almost completely shifted toward the ketone. Photocyclization of diarylethene results in a new equilibrium containing a significant fraction of the enol tautomer.
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Affiliation(s)
- Andrey G Lvov
- N. D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , 47, Leninsky prosp , 119991 Moscow , Russian Federation.,Department of Chemistry and Pharmacy , Friedrich-Alexander University Erlangen-Nürnberg (FAU) , Egerlandstrasse 1 , 91058 Erlangen , Germany
| | - Anton V Yadykov
- N. D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , 47, Leninsky prosp , 119991 Moscow , Russian Federation
| | - Konstantin A Lyssenko
- Department of Chemistry , Lomonosov Moscow State University , 119992 Moscow , Russian Federation
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy , Friedrich-Alexander University Erlangen-Nürnberg (FAU) , Egerlandstrasse 1 , 91058 Erlangen , Germany
| | - Valerii Z Shirinian
- N. D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , 47, Leninsky prosp , 119991 Moscow , Russian Federation
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy , Friedrich-Alexander University Erlangen-Nürnberg (FAU) , Egerlandstrasse 1 , 91058 Erlangen , Germany
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10
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Mörtel M, Seller M, Heinemann FW, Khusniyarov MM. A valence tautomeric cobalt-dioxolene complex with an anchoring group for prospective chemical grafting to metal oxides. Dalton Trans 2020; 49:17532-17536. [PMID: 33300528 DOI: 10.1039/d0dt03771k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Here, we synthesized a valence tautomeric cobalt-dioxolene complex featuring a protected anchoring group. At room temperature, the complex reveals a nearly pure low-spin-Co(iii)-catecholate state in the solid state, but a nearly pure high-spin-Co(ii)-semiquinonate state in toluene solution. Thermal switchability of the complex in solution and in the solid state is investigated.
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Affiliation(s)
- Max Mörtel
- Friedrich-Alexander University Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Egerlandstr. 1, 91058, Erlangen, Germany.
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Poggini L, Londi G, Milek M, Naim A, Lanzilotto V, Cortigiani B, Bondino F, Magnano E, Otero E, Sainctavit P, Arrio MA, Juhin A, Marchivie M, Khusniyarov MM, Totti F, Rosa P, Mannini M. Surface effects on a photochromic spin-crossover iron(ii) molecular switch adsorbed on highly oriented pyrolytic graphite. Nanoscale 2019; 11:20006-20014. [PMID: 31603165 DOI: 10.1039/c9nr05947d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thin films of an iron(ii) complex with a photochromic diarylethene-based ligand and featuring a spin-crossover behaviour have been grown by sublimation in ultra-high vacuum on highly oriented pyrolytic graphite and spectroscopically characterized through high-resolution X-ray and ultraviolet photoemission, as well as via X-ray absorption. Temperature-dependent studies demonstrated that the thermally induced spin-crossover is preserved at a sub-monolayer (0.7 ML) coverage. Although the photochromic ligand ad hoc integrated into the complex allows the photo-switching of the spin state of the complex at room temperature both in bulk and for a thick film on highly oriented pyrolytic graphite, this photomagnetic effect is not observed in sub-monolayer deposits. Ab initio calculations justify this behaviour as the result of specific adsorbate-substrate interactions leading to the stabilization of the photoinactive form of the diarylethene ligand over photoactive one on the surface.
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Affiliation(s)
- Lorenzo Poggini
- Department of Chemistry "Ugo Schiff" and INSTM Research Unit of Firenze, University of Firenze, I-50019 Sesto Fiorentino, Italy.
| | - Giacomo Londi
- Department of Chemistry "Ugo Schiff" and INSTM Research Unit of Firenze, University of Firenze, I-50019 Sesto Fiorentino, Italy.
| | - Magdalena Milek
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058, Erlangen, Germany
| | - Ahmad Naim
- CNRS, Univ. Bordeaux, ICMCB, UMR5026, F-33600 Pessac, France
| | - Valeria Lanzilotto
- Department of Chemistry "Ugo Schiff" and INSTM Research Unit of Firenze, University of Firenze, I-50019 Sesto Fiorentino, Italy.
| | - Brunetto Cortigiani
- Department of Chemistry "Ugo Schiff" and INSTM Research Unit of Firenze, University of Firenze, I-50019 Sesto Fiorentino, Italy.
| | - Federica Bondino
- CNR-IOM, Laboratorio TASC, Basovizza SS-14, Km 163.5, 34149 Trieste, Italy
| | - Elena Magnano
- CNR-IOM, Laboratorio TASC, Basovizza SS-14, Km 163.5, 34149 Trieste, Italy
| | - Edwige Otero
- Synchrotron SOLEIL L'Orme des Merisiers Saint Aubin, BP 48 91192, Gif sur Yvette, France
| | - Philippe Sainctavit
- Synchrotron SOLEIL L'Orme des Merisiers Saint Aubin, BP 48 91192, Gif sur Yvette, France and IMPMC-UMR7590, CNRS, Sorbonne université, MNHN 4 place Jussieu, 75005 Paris, France
| | - Marie-Anne Arrio
- IMPMC-UMR7590, CNRS, Sorbonne université, MNHN 4 place Jussieu, 75005 Paris, France
| | - Amélie Juhin
- IMPMC-UMR7590, CNRS, Sorbonne université, MNHN 4 place Jussieu, 75005 Paris, France
| | | | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstr. 1, 91058, Erlangen, Germany
| | - Federico Totti
- Department of Chemistry "Ugo Schiff" and INSTM Research Unit of Firenze, University of Firenze, I-50019 Sesto Fiorentino, Italy.
| | - Patrick Rosa
- CNRS, Univ. Bordeaux, ICMCB, UMR5026, F-33600 Pessac, France
| | - Matteo Mannini
- Department of Chemistry "Ugo Schiff" and INSTM Research Unit of Firenze, University of Firenze, I-50019 Sesto Fiorentino, Italy.
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12
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Lvov AG, Mörtel M, Yadykov AV, Heinemann FW, Shirinian VZ, Khusniyarov MM. Photochromic diarylethene ligands featuring 2-(imidazol-2-yl)pyridine coordination site and their iron(II) complexes. Beilstein J Org Chem 2019; 15:2428-2437. [PMID: 31666877 PMCID: PMC6808200 DOI: 10.3762/bjoc.15.235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/27/2019] [Indexed: 12/29/2022] Open
Abstract
A new family of photochromic diarylethene-based ligands bearing a 2-(imidazol-2-yl)pyridine coordination unit has been developed. Four members of the new family have been synthesized. The photoactive ligands feature non-aromatic ethene bridges (cyclopentene, cyclopentenone, and cyclohexenone), as well as closely spaced photoactive and metal coordination sites aiming a strong impact of photocyclization on the electronic structure of the coordinated metal ion. The ligands with cyclopentenone and cyclohexenone bridges show good cycloreversion quantum yields of 0.20-0.32. The thermal stability of closed-ring isomers reveals half-lives of up to 20 days in solution at room temperature. The ligands were used to explore coordination chemistry with iron(II) targeting photoswitchable spin-crossover complexes. Unexpectedly, dinuclear and tetranuclear iron(II) complexes were obtained, which were thoroughly characterized by X-ray crystallography, magnetic measurements, and Mössbauer spectroscopy. The formation of multinuclear complexes is facilitated by two coordination sites of the diarylethene, acting as a bridging ligand. The bridging nature of the diarylethene in the complexes prevents photocyclization.
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Affiliation(s)
- Andrey G Lvov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., 119991 Moscow, Russian Federation
| | - Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Anton V Yadykov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., 119991 Moscow, Russian Federation
| | - Frank W Heinemann
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Valerii Z Shirinian
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47, Leninsky prosp., 119991 Moscow, Russian Federation
| | - Marat M Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
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13
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Mörtel M, Lindner T, Scheurer A, Heinemann FW, Khusniyarov MM. Phenanthroline-Based Molecular Switches for Prospective Chemical Grafting: A Synthetic Strategy and Its Application to Spin-Crossover Complexes. Inorg Chem 2019; 59:2659-2666. [PMID: 31509384 DOI: 10.1021/acs.inorgchem.9b01424] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Thomas Lindner
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Andreas Scheurer
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, 91058 Erlangen, Germany
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14
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Mondal D, Majee MC, Bhattacharya K, Long J, Larionova J, Khusniyarov MM, Chaudhury M. Crossover from Antiferromagnetic to Ferromagnetic Exchange Coupling in a New Family of Bis-(μ-phenoxido)dicopper(II) Complexes: A Comprehensive Magneto-Structural Correlation by Experimental and Theoretical Study. ACS Omega 2019; 4:10558-10570. [PMID: 31460154 PMCID: PMC6648884 DOI: 10.1021/acsomega.8b03656] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 05/15/2019] [Indexed: 06/10/2023]
Abstract
Five neutral bis(μ-phenoxido)dicopper(II) complexes, [Cu2(LMe,Me,Me)2] (1), [Cu2(LMe,Me,Et)2]·CH2Cl2 (2), [Cu2(L i-Pr,i-Pr,i-Pr)2]·2H2O (3), [Cu2(L t-Bu,Me,i-Pr)2] (4), and [Cu2(L t-Bu,t-Bu,i-Pr)2]·H2O (5) have been synthesized and characterized by single-crystal X-ray diffraction analyses, magnetic studies, and density functional theory (DFT) calculations, in which the ligands [H2LMe,Me,Me = N,N-bis(2-hydroxy-3,5-dimethylbenzyl)-N',N'-dimethylethylene-1,2-diamine, H2LMe,Me,Et = N,N-bis(2-hydroxy-3,5-dimethylbenzyl)-N',N'-dimethylethylene-1,2-diamine, H2L i-Pr,i-Pr,i-Pr = N,N-bis(2-hydroxy-3,5-diisopropylbenzyl)-N',N'-diisopropylethylene-1,2-diamine, H2L t-Bu,Me,i-Pr = N,N-bis(2-hydroxy-3-tert-butyl-5-methylbenzyl)-N',N'-diisopropylethylene-1,2-diamine, and H2L t-Bu,t-Bu,i-Pr = N,N-bis(2-hydroxy-3,5-di-tert-butylbenzyl)-N',N'-diisopropylethylene-1,2-diamine] contain the same [O,N,N,O]-donor atoms combination but differ in substituents at phenol rings and at an amino nitrogen atom. The effect of these remote substituents on the nature of exchange coupling interactions (ferromagnetic vs antiferromagnetic) between the copper(II) ions has been investigated. The average Cu-O-Cu angle, Cu-O-Cu-O torsion angle, and Cu···Cu separation in 1-5 are varied systematically by these remote ligand substituents in the range 98.6-83.3°, 26.0-46.5°, and 2.982-2.633 Å, respectively. As a result, the intramolecular spin-spin coupling in these complexes are changing gradually from a strong antiferromagnetic (J = -395 cm-1, where Ĥ = -JŜ 1 Ŝ 2) to a moderate ferromagnetic (J = +53.2 cm-1) regime. The crossover angle at which the magnetic interaction changes from antiferromagnetic to ferromagnetic (J = 0) is determined to be ca. 87° for this series of dicopper(II) complexes. DFT calculations support the experimentally determined crossover angle and disclose various magneto-structural correlations in the series 1-5.
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Affiliation(s)
- Dhrubajyoti Mondal
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Mithun Chandra Majee
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Kisholoy Bhattacharya
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Jérôme Long
- Institut
Charles Gerhardt Montpellier (ICGM), team IMNO, UMR 5253, Université
de Montpellier, CNRS, ENSM, Place E. Bataillon, 34095 Montpellier, France
| | - Joulia Larionova
- Institut
Charles Gerhardt Montpellier (ICGM), team IMNO, UMR 5253, Université
de Montpellier, CNRS, ENSM, Place E. Bataillon, 34095 Montpellier, France
| | - Marat M. Khusniyarov
- Department
of Chemistry and Pharmacy, Friedrich-Alexander
University Erlangen−Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Muktimoy Chaudhury
- School
of Chemical Sciences, Indian Association
for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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15
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Bara D, Wilson C, Mörtel M, Khusniyarov MM, Ling S, Slater B, Sproules S, Forgan RS. Kinetic Control of Interpenetration in Fe–Biphenyl-4,4′-dicarboxylate Metal–Organic Frameworks by Coordination and Oxidation Modulation. J Am Chem Soc 2019; 141:8346-8357. [DOI: 10.1021/jacs.9b03269] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dominic Bara
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
| | - Claire Wilson
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
| | - Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Sanliang Ling
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, U.K
| | - Ben Slater
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Stephen Sproules
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
| | - Ross S. Forgan
- WestCHEM School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, U.K
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16
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Klementyeva SV, Lukoyanov AN, Afonin MY, Mörtel M, Smolentsev AI, Abramov PA, Starikova AA, Khusniyarov MM, Konchenko SN. Europium and ytterbium complexes with o-iminoquinonato ligands: synthesis, structure, and magnetic behavior. Dalton Trans 2019; 48:3338-3348. [PMID: 30778457 DOI: 10.1039/c8dt04849e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes of divalent ytterbium (1) and europium (2) with a dianionic o-amidophenolate ligand were prepared by both the direct reduction of 4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzoquinone (dpp-IQ) and the salt metathesis reaction of potassium o-amidophenolate with LnI2 (Ln = Yb, Eu). Oxidation of o-amidophenolates 1, 2 with one equivalent of dpp-IQ as well as the salt metathesis reaction of potassium o-iminosemiquinolate with LnI2 afforded ligand mixed-valent o-iminosemiquinonato-amidophenolato complexes of trivalent ytterbium (3) and europium (4). All novel complexes 1-4 were fully characterized, including the solid state structures of 1 and 2 determined by single crystal X-ray diffraction. The magnetic properties of paramagnetic 2-4 were examined.
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Affiliation(s)
- Svetlana V Klementyeva
- Kazan Federal University, A.M. Butlerov Institute of Chemistry, 420008, Kremlevskaya str. 29/1, Kazan, Russia.
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17
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Lvov AG, Khusniyarov MM, Shirinian VZ. Azole-based diarylethenes as the next step towards advanced photochromic materials. Journal of Photochemistry and Photobiology C: Photochemistry Reviews 2018. [DOI: 10.1016/j.jphotochemrev.2018.04.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Mondal D, Majee MC, Kundu S, Mörtel M, Abbas G, Endo A, Khusniyarov MM, Chaudhury M. Dinuclear Iron(III) and Cobalt(III) Complexes Featuring a Biradical Bridge: Their Molecular Structures and Magnetic, Spectroscopic, and Redox Properties. Inorg Chem 2018; 57:1004-1016. [DOI: 10.1021/acs.inorgchem.7b02340] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dhrubajyoti Mondal
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Mithun Chandra Majee
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Sanchita Kundu
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse
1, 91058 Erlangen, Germany
| | - Ghulam Abbas
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse
1, 91058 Erlangen, Germany
| | - Akira Endo
- Department
of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1
Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstrasse
1, 91058 Erlangen, Germany
| | - Muktimoy Chaudhury
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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19
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Mörtel M, Witt A, Heinemann FW, Bochmann S, Bachmann J, Khusniyarov MM. Synthesis, Characterization, and Properties of Iron(II) Spin-Crossover Molecular Photoswitches Functioning at Room Temperature. Inorg Chem 2017; 56:13174-13186. [DOI: 10.1021/acs.inorgchem.7b01952] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Max Mörtel
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Alexander Witt
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Sebastian Bochmann
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Julien Bachmann
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
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20
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Klementyeva SV, Gritsan NP, Khusniyarov MM, Witt A, Dmitriev AA, Suturina EA, Hill NDD, Roemmele TL, Gamer MT, Boeré RT, Roesky PW, Zibarev AV, Konchenko SN. Frontispiece: The First Lanthanide Complexes with a Redox-Active Sulfur Diimide Ligand: Synthesis and Characterization of [LnCp* 2
(RN=) 2
S], Ln=Sm, Eu, Yb; R=SiMe 3. Chemistry 2017. [DOI: 10.1002/chem.201780663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Svetlana V. Klementyeva
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
- Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 603137 Nizhny Novgorod Russia
| | - Nina P. Gritsan
- Department of Physics; Novosibirsk State University; 630090 Novosibirsk Russia
- Voevodsky Institute of Chemical Kinetics and Combustion; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy; Friedrich-Alexander-University Erlangen-Nürnberg (FAU); 91058 Erlangen Germany
| | - Alexander Witt
- Department of Chemistry and Pharmacy; Friedrich-Alexander-University Erlangen-Nürnberg (FAU); 91058 Erlangen Germany
| | - Alexey A. Dmitriev
- Department of Physics; Novosibirsk State University; 630090 Novosibirsk Russia
- Voevodsky Institute of Chemical Kinetics and Combustion; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
| | - Elizaveta A. Suturina
- Voevodsky Institute of Chemical Kinetics and Combustion; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
- Max Planck Institute for Chemical Energy Conversion; 45470 Mülheim an der Ruhr Germany
| | - Nathan D. D. Hill
- Department of Chemistry and Biochemistry; University of Lethbridge; Lethbridge Alberta T1K3M4 Canada
| | - Tracey L. Roemmele
- Department of Chemistry and Biochemistry; University of Lethbridge; Lethbridge Alberta T1K3M4 Canada
| | - Michael T. Gamer
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - René T. Boeré
- Department of Chemistry and Biochemistry; University of Lethbridge; Lethbridge Alberta T1K3M4 Canada
| | - Peter W. Roesky
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - Andrey V. Zibarev
- Department of Physics; Novosibirsk State University; 630090 Novosibirsk Russia
- Vorozhtsov Institute of Organic Chemistry; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
| | - Sergey N. Konchenko
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
- Department of Natural Sciences; Novosibirsk State University; 630090 Novosibirsk Russia
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21
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Klementyeva SV, Gritsan NP, Khusniyarov MM, Witt A, Dmitriev AA, Suturina EA, Hill NDD, Roemmele TL, Gamer MT, Boeré RT, Roesky PW, Zibarev AV, Konchenko SN. The First Lanthanide Complexes with a Redox-Active Sulfur Diimide Ligand: Synthesis and Characterization of [LnCp*2(RN=)2S], Ln=Sm, Eu, Yb; R=SiMe3. Chemistry 2016; 23:1278-1290. [DOI: 10.1002/chem.201604340] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 10/26/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Svetlana V. Klementyeva
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
- Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; 603137 Nizhny Novgorod Russia
| | - Nina P. Gritsan
- Department of Physics; Novosibirsk State University; 630090 Novosibirsk Russia
- Voevodsky Institute of Chemical Kinetics and Combustion; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy; Friedrich-Alexander-University Erlangen-Nürnberg (FAU); 91058 Erlangen Germany
| | - Alexander Witt
- Department of Chemistry and Pharmacy; Friedrich-Alexander-University Erlangen-Nürnberg (FAU); 91058 Erlangen Germany
| | - Alexey A. Dmitriev
- Department of Physics; Novosibirsk State University; 630090 Novosibirsk Russia
- Voevodsky Institute of Chemical Kinetics and Combustion; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
| | - Elizaveta A. Suturina
- Voevodsky Institute of Chemical Kinetics and Combustion; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
- Max Planck Institute for Chemical Energy Conversion; 45470 Mülheim an der Ruhr Germany
| | - Nathan D. D. Hill
- Department of Chemistry and Biochemistry; University of Lethbridge; Lethbridge Alberta T1K3M4 Canada
| | - Tracey L. Roemmele
- Department of Chemistry and Biochemistry; University of Lethbridge; Lethbridge Alberta T1K3M4 Canada
| | - Michael T. Gamer
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - René T. Boeré
- Department of Chemistry and Biochemistry; University of Lethbridge; Lethbridge Alberta T1K3M4 Canada
| | - Peter W. Roesky
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - Andrey V. Zibarev
- Department of Physics; Novosibirsk State University; 630090 Novosibirsk Russia
- Vorozhtsov Institute of Organic Chemistry; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
| | - Sergey N. Konchenko
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch Russian Academy of Sciences; 630090 Novosibirsk Russia
- Institute for Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
- Department of Natural Sciences; Novosibirsk State University; 630090 Novosibirsk Russia
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22
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Affiliation(s)
- Marat M. Khusniyarov
- Department of Chemistry and Pharmacy; Friedrich-Alexander University Erlangen-Nürnberg (FAU); Egerlandstr. 1 91058 Erlangen Germany
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23
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Pushkarevsky NA, Ogienko MA, Smolentsev AI, Novozhilov IN, Witt A, Khusniyarov MM, Cherkasov VK, Konchenko SN. Cooperative reduction by Ln2+ and Cp*− ions: synthesis and properties of Sm, Eu, and Yb complexes with 3,6-di-tert-butyl-o-benzoquinone. Dalton Trans 2016; 45:1269-78. [DOI: 10.1039/c5dt03573b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Reactions of lantanocenes LnCp2*(thf)n with the title o-quinone result in either dinuclear (Sm3+,Yb3+) or trinuclear mixed-valent (Eu2+/Eu3+) catecholates.
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Affiliation(s)
- Nikolay A. Pushkarevsky
- Nikolaev Institute of Inorganic Chemistry
- Siberian Division of RAS
- 630090 Novosibirsk
- Russia
- Department of Natural Sciences
| | - Mikhail A. Ogienko
- Nikolaev Institute of Inorganic Chemistry
- Siberian Division of RAS
- 630090 Novosibirsk
- Russia
| | - Anton I. Smolentsev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Division of RAS
- 630090 Novosibirsk
- Russia
| | - Igor N. Novozhilov
- Nikolaev Institute of Inorganic Chemistry
- Siberian Division of RAS
- 630090 Novosibirsk
- Russia
| | - Alexander Witt
- Department of Chemistry and Pharmacy
- Friedrich-Alexander-University of Erlangen-Nuremberg
- 91058 Erlangen
- Germany
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy
- Friedrich-Alexander-University of Erlangen-Nuremberg
- 91058 Erlangen
- Germany
| | - Vladimir K. Cherkasov
- G. A. Razuvaev Institute of Organometallic Chemistry of RAS
- 603950 Nizhny Novgorod
- Russia
- N. I. Lobachevsky Nizhny Novgorod State University
- Nizhny Novgorod
| | - Sergey N. Konchenko
- Nikolaev Institute of Inorganic Chemistry
- Siberian Division of RAS
- 630090 Novosibirsk
- Russia
- Department of Natural Sciences
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24
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Lichtenberg C, Viciu L, Vogt M, Rodríguez-Lugo RE, Adelhardt M, Sutter J, Khusniyarov MM, Meyer K, de Bruin B, Bill E, Grützmacher H. Low-valent iron: an Fe(I) ate compound as a building block for a linear trinuclear Fe cluster. Chem Commun (Camb) 2015. [PMID: 26221636 DOI: 10.1039/c5cc04908c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A low-valent trinuclear iron complex with an unusual linear Fe(I)-Fe(II)-Fe(I) unit is presented. It is accessed in a rational approach using a salt metathesis reaction between a new anionic Fe(I) containing heterocycle and FeCl2. Its electronic structure was studied by single crystal XRD analysis, EPR and Mössbauer spectroscopy, and magnetic susceptibility measurements.
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Affiliation(s)
- C Lichtenberg
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093, Switzerland.
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25
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Rösner B, Milek M, Witt A, Gobaut B, Torelli P, Fink RH, Khusniyarov MM. Reversible Photoswitching of a Spin‐Crossover Molecular Complex in the Solid State at Room Temperature. Angew Chem Int Ed Engl 2015; 54:12976-80. [DOI: 10.1002/anie.201504192] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 08/11/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Benedikt Rösner
- Department of Chemistry and Pharmacy, Friedrich‐Alexander University of Erlangen‐Nuremberg, Egerlandstrasse 1–3, 91058 Erlangen (Germany) http://chemie.fau.de/khusniyarov
| | - Magdalena Milek
- Department of Chemistry and Pharmacy, Friedrich‐Alexander University of Erlangen‐Nuremberg, Egerlandstrasse 1–3, 91058 Erlangen (Germany) http://chemie.fau.de/khusniyarov
| | - Alexander Witt
- Department of Chemistry and Pharmacy, Friedrich‐Alexander University of Erlangen‐Nuremberg, Egerlandstrasse 1–3, 91058 Erlangen (Germany) http://chemie.fau.de/khusniyarov
| | - Benoît Gobaut
- Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, Area Science Park, 34149 Trieste (Italy)
| | - Piero Torelli
- Laboratorio TASC, IOM‐CNR, S.S. 14 km 163.5, Basovizza, 34149 Trieste (Italy)
| | - Rainer H. Fink
- Department of Chemistry and Pharmacy, Friedrich‐Alexander University of Erlangen‐Nuremberg, Egerlandstrasse 1–3, 91058 Erlangen (Germany) http://chemie.fau.de/khusniyarov
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich‐Alexander University of Erlangen‐Nuremberg, Egerlandstrasse 1–3, 91058 Erlangen (Germany) http://chemie.fau.de/khusniyarov
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26
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Rösner B, Milek M, Witt A, Gobaut B, Torelli P, Fink RH, Khusniyarov MM. Reversible Photoswitching of a Spin-Crossover Molecular Complex in the Solid State at Room Temperature. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504192] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Witt A, Heinemann FW, Khusniyarov MM. Bidirectional photoswitching of magnetic properties at room temperature: ligand-driven light-induced valence tautomerism. Chem Sci 2015; 6:4599-4609. [PMID: 29568417 PMCID: PMC5851081 DOI: 10.1039/c5sc00130g] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 05/22/2015] [Indexed: 11/30/2022] Open
Abstract
Valence tautomeric (VT) metal complexes are highly promising bistable molecular compounds for applications as molecular switches in molecular electronics and spintronics. Although VT species can be switched with light, the photoswitching in all reported systems requires very low temperatures (usually below 20 K) because photoinduced states are highly unstable at room temperature. The thermal instability hinders any practical application of these complexes in genuine devices. In this report, for the first time we demonstrate photoswitching of VT species and associated magnetic properties at room temperature. The bidirectional photoswitching in solution is due to cis-trans photoisomerizable 4-styrylpyridine ligands deliberately integrated into cobalt dioxolene molecular complexes. The novel type of photoswitching has been coined Ligand-Driven Light-Induced Valence Tautomerism (LD-LIVT). The photoconversion of VT states of 28% has been achieved in solution at room temperature. The photoinduced states show extraordinary thermal stability for hours at room temperature, as compared to common nanoseconds reported previously. The switching proceeds at molecular level with the effective photoswitching rate of 3 × 1013 molecules per s under our conditions. Consequently, this work may open new horizons in applications of molecular switches based on VT metal complexes in molecular devices functioning at room temperature.
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Affiliation(s)
- Alexander Witt
- Friedrich-Alexander-University of Erlangen-Nuremberg , Department of Chemistry and Pharmacy , Egerlandstr. 1 , 91058 Erlangen , Germany . ; ; Tel: +49 9131 8527464
| | - Frank W Heinemann
- Friedrich-Alexander-University of Erlangen-Nuremberg , Department of Chemistry and Pharmacy , Egerlandstr. 1 , 91058 Erlangen , Germany . ; ; Tel: +49 9131 8527464
| | - Marat M Khusniyarov
- Friedrich-Alexander-University of Erlangen-Nuremberg , Department of Chemistry and Pharmacy , Egerlandstr. 1 , 91058 Erlangen , Germany . ; ; Tel: +49 9131 8527464
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Askevold B, Khusniyarov MM, Kroener W, Gieb K, Müller P, Herdtweck E, Heinemann FW, Diefenbach M, Holthausen MC, Vieru V, Chibotaru LF, Schneider S. Inside Cover: Square-Planar Ruthenium(II) Complexes: Control of Spin State by Pincer Ligand Functionalization (Chem. Eur. J. 2/2015). Chemistry 2015. [DOI: 10.1002/chem.201590001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Askevold B, Khusniyarov MM, Kroener W, Gieb K, Müller P, Herdtweck E, Heinemann FW, Diefenbach M, Holthausen MC, Vieru V, Chibotaru LF, Schneider S. Square-planar ruthenium(II) complexes: control of spin state by pincer ligand functionalization. Chemistry 2014; 21:579-89. [PMID: 25359612 DOI: 10.1002/chem.201404282] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Indexed: 11/07/2022]
Abstract
Functionalization of the PNP pincer ligand backbone allows for a comparison of the dialkyl amido, vinyl alkyl amido, and divinyl amido ruthenium(II) pincer complex series [RuCl{N(CH2 CH2 PtBu2 )2 }], [RuCl{N(CHCHPtBu2 )(CH2 CH2 PtBu2 )}], and [RuCl{N(CHCHPtBu2 )2 }], in which the ruthenium(II) ions are in the extremely rare square-planar coordination geometry. Whereas the dialkylamido complex adopts an electronic singlet (S=0) ground state and energetically low-lying triplet (S=1) state, the vinyl alkyl amido and the divinyl amido complexes exhibit unusual triplet (S=1) ground states as confirmed by experimental and computational examination. However, essentially non-magnetic ground states arise for the two intermediate-spin complexes owing to unusually large zero-field splitting (D>+200 cm(-1) ). The change in ground state electronic configuration is attributed to tailored pincer ligand-to-metal π-donation within the PNP ligand series.
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Affiliation(s)
- Bjorn Askevold
- Department Chemie und Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen (Germany)
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Searles K, Fortier S, Khusniyarov MM, Carroll PJ, Sutter J, Meyer K, Mindiola DJ, Caulton KG. A cis-divacant octahedral and mononuclear iron(IV) imide. Angew Chem Int Ed Engl 2014; 53:14139-43. [PMID: 25327475 DOI: 10.1002/anie.201407156] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 08/26/2014] [Indexed: 01/08/2023]
Abstract
A rare, low-spin Fe(IV) imide complex [(pyrr2py)Fe=NAd] (pyrr2 py(2-) = bis(pyrrolyl)pyridine; Ad = 1-adamantyl) confined to a cis-divacant octahedral geometry, was prepared by reduction of N3Ad by the Fe(II) precursor [(pyrr2py)Fe(OEt2)]. The imide complex is low-spin with temperature-independent paramagnetism. In comparison to an authentic Fe(III) complex, such as [(pyrr2py)FeCl], the pyrr2py(2-) ligand is virtually redox innocent.
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Affiliation(s)
- Keith Searles
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104 (USA)
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Searles K, Fortier S, Khusniyarov MM, Carroll PJ, Sutter J, Meyer K, Mindiola DJ, Caulton KG. Acis-Divacant Octahedral and Mononuclear Iron(IV) Imide. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407156] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Zolnhofer EM, Käß M, Khusniyarov MM, Heinemann FW, Maron L, van Gastel M, Bill E, Meyer K. An Intermediate Cobalt(IV) Nitrido Complex and its N-Migratory Insertion Product. J Am Chem Soc 2014; 136:15072-8. [DOI: 10.1021/ja508144j] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Eva M. Zolnhofer
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen - Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Martina Käß
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen - Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen - Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen - Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
| | - Laurent Maron
- Université de Toulouse et CNRS, NSA, UPS, CNRS, UMR 5215 LPCNO, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Maurice van Gastel
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34−36, 45470 Mülheim, Germany
| | - Eckhard Bill
- Max Planck Institute for Chemical Energy Conversion, Stiftstraße 34−36, 45470 Mülheim, Germany
| | - Karsten Meyer
- Department
of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen - Nürnberg (FAU), Egerlandstr. 1, 91058 Erlangen, Germany
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Witt A, Heinemann FW, Sproules S, Khusniyarov MM. Modulation of Magnetic Properties at Room Temperature: Coordination-Induced Valence Tautomerism in a Cobalt Dioxolene Complex. Chemistry 2014; 20:11149-62. [DOI: 10.1002/chem.201402129] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Indexed: 11/06/2022]
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Das HS, Schweinfurth D, Fiedler J, Khusniyarov MM, Mobin SM, Sarkar B. Tuning the Electronic Properties in Ruthenium-Quinone Complexes through Metal Coordination and Substitution at the Bridge. Chemistry 2014; 20:4334-46. [DOI: 10.1002/chem.201204379] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Revised: 01/08/2014] [Indexed: 11/06/2022]
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Klein JEMN, Miehlich B, Holzwarth MS, Bauer M, Milek M, Khusniyarov MM, Knizia G, Werner HJ, Plietker B. Der elektronische Grundzustand von [Fe(CO)3(NO)]−: eine spektroskopische und theoretische Studie. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309767] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Klein JEMN, Miehlich B, Holzwarth MS, Bauer M, Milek M, Khusniyarov MM, Knizia G, Werner HJ, Plietker B. The Electronic Ground State of [Fe(CO)3(NO)]−: A Spectroscopic and Theoretical Study. Angew Chem Int Ed Engl 2014; 53:1790-4. [DOI: 10.1002/anie.201309767] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Indexed: 01/19/2023]
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Milek M, Heinemann FW, Khusniyarov MM. Spin Crossover Meets Diarylethenes: Efficient Photoswitching of Magnetic Properties in Solution at Room Temperature. Inorg Chem 2013; 52:11585-92. [DOI: 10.1021/ic401960x] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Magdalena Milek
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen−Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen−Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen−Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany
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Schweinfurth D, Khusniyarov MM, Bubrin D, Hohloch S, Su CY, Sarkar B. Tuning spin-spin coupling in quinonoid-bridged dicopper(II) complexes through rational bridge variation. Inorg Chem 2013; 52:10332-9. [PMID: 24010410 DOI: 10.1021/ic400955c] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bridged metal complexes [{Cu(tmpa)}2(μ-L(1)-2H)](ClO4)2 (1), [{Cu(tmpa)}2(μ-L(2)-2H)](ClO4)2 (2), [{Cu(tmpa)}2(μ-L(3)-2H)](BPh4)2 (3), and [{Cu(tmpa)}2(μ-L(4)-2H)](ClO4)2 (4) (tmpa = tris(2-pyridylmethyl)amine, L(1) = chloranilic acid, L(2) = 2,5-dihydroxy-1,4-benzoquinone, L(3) = (2,5-di-[2-(methoxy)-anilino]-1,4-benzoquinone, L(4) = azophenine) were synthesized from copper(II) salts, tmpa, and the bridging quinonoid ligands in the presence of a base. X-ray structural characterization of the complexes showed a distorted octahedral environment around the copper(II) centers for the complexes 1-3, the donors being the nitrogen atoms of tmpa, and the nitrogen or oxygen donors of the bridging quinones. In contrast, the copper(II) centers in 4 display a distorted square-pyramidal coordination, where one of the pyridine arms of each tmpa remains uncoordinated. Bond-length analyses within the bridging ligand exhibit localization of the double bonds inside the bridge for 1-3. In contrast, complete delocalization of double bonds within the bridging ligand is observed for 4. Temperature-dependent magnetic susceptibility measurements on the complexes reveal an antiferromagnetic coupling between the copper(II) ions. The strength of antiferromagnetic coupling was observed to depend on the energy of the HOMO of the bridging quinone ligands, with exchange coupling constants J in the range between -23.2 and -0.6 cm(-1) and the strength of antiferromagnetic coupling of 4 > 3 > 2 > 1. Broken-symmetry density functional theory calculations (DFT) revealed that the orientation of magnetic orbitals in 1 and 2 is different than that in 3 and 4, and this results in two different exchange pathways. These results demonstrate how bridge-mediated spin-spin coupling in quinone-bridged metal complexes can be strongly tuned by a rational design of the bridging ligand employing the [O] for [NR] isoelectronic analogy.
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Affiliation(s)
- David Schweinfurth
- Institut für Chemie und Biochemie, Freie Universität Berlin , Fabeckstrasse 34-36, D-14195, Berlin, Germany
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Milek M, Witt A, Streb C, Heinemann FW, Khusniyarov MM. Tetraanionic N2O2-coordinating ligands as potential building blocks for supramolecular magnetic networks. Dalton Trans 2013; 42:5237-41. [PMID: 23455570 DOI: 10.1039/c3dt50177a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bisoxamate ligand containing three different types of coordination sites was designed and synthesized. The developed synthetic strategy was adopted to prepare a related 1,2-bis(2-hydroxybenzamido)benzene-derived ligand. Nickel(II) complexes of both the novel ligands were obtained and characterized by X-ray crystallography, NMR, electronic absorption spectroscopy, and theoretical calculations.
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Affiliation(s)
- Magdalena Milek
- Friedrich-Alexander-University Erlangen-Nürnberg, Department of Chemistry and Pharmacy, Egerlandstr. 1, 91058 Erlangen, Germany
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Lieb D, Friedel FC, Yawer M, Zahl A, Khusniyarov MM, Heinemann FW, Ivanović-Burmazović I. Dinuclear Seven-Coordinate Mn(II) Complexes: Effect of Manganese(II)-Hydroxo Species on Water Exchange and Superoxide Dismutase Activity. Inorg Chem 2012; 52:222-36. [DOI: 10.1021/ic301714d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dominik Lieb
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
| | - Felix C. Friedel
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
| | - Mirza Yawer
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
| | - Achim Zahl
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
| | - Ivana Ivanović-Burmazović
- Department
of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Egerlandstr.
1, 91058 Erlangen, Germany
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Kropp H, King AE, Khusniyarov MM, Heinemann FW, Lancaster KM, DeBeer S, Bill E, Meyer K. Manganese nitride complexes in oxidation states III, IV, and V: synthesis and electronic structure. J Am Chem Soc 2012; 134:15538-44. [PMID: 22920682 DOI: 10.1021/ja306647c] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The synthesis and characterization of a series of manganese nitrides in a tripodal chelating tris(carbene) ligand framework is described. Photolysis of [(TIMEN(xyl))Mn(N(3))](+) (where TIMEN(xyl) = tris[2-(3-xylylimidazol-2-ylidene)ethyl]amine) yields the isolable molecular Mn(IV) nitride, [(TIMEN(xyl))Mn(N)](+). Spectroscopic and DFT studies indicate that this Mn(IV) d(3) complex has a doublet electronic ground state. The metal-centered one-electron oxidation of this Mn(IV) species results in formation of the pentavalent Mn(V) nitride, [(TIMEN(xyl))Mn(N)](2+). Unlike previously reported, tetragonal Mn(V) nitrides with a d(2), nonmagnetic S = 0 ground state, this trigonal bipyramidal complex has a triplet ground state S = 1. One-electron reduction of [(TIMEN(xyl))Mn(N)](+) produces the neutral, nonmagnetic trivalent [(TIMEN(xyl))Mn(N)] species with a d(4) low-spin, S = 0, ground state.
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Affiliation(s)
- Henning Kropp
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University of Erlangen-Nuremberg, Egerlandstrasse 1, Erlangen, Germany
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Schweinfurth D, Demeshko S, Khusniyarov MM, Dechert S, Gurram V, Buchmeiser MR, Meyer F, Sarkar B. Capped-Tetrahedrally Coordinated Fe(II) and Co(II) Complexes Using a “Click”-Derived Tripodal Ligand: Geometric and Electronic Structures. Inorg Chem 2012; 51:7592-7. [DOI: 10.1021/ic300392e] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- David Schweinfurth
- Institut für
Anorganische
Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70550, Stuttgart, Germany
| | - Serhiy Demeshko
- Institut für Anorganische
Chemie, Georg-August Universität Göttingen, Tammanstrasse 4, D-37077, Göttingen, Germany
| | - Marat M. Khusniyarov
- Department Chemie und Pharmazie, Friedrich-Alexander Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058, Erlangen, Germany
| | - Sebastian Dechert
- Institut für Anorganische
Chemie, Georg-August Universität Göttingen, Tammanstrasse 4, D-37077, Göttingen, Germany
| | | | - Michael R. Buchmeiser
- Institut für Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550,
Stuttgart, Germany
| | - Franc Meyer
- Institut für Anorganische
Chemie, Georg-August Universität Göttingen, Tammanstrasse 4, D-37077, Göttingen, Germany
| | - Biprajit Sarkar
- Institut für
Anorganische
Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70550, Stuttgart, Germany
- Institut für Chemie und
Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, D-14195, Berlin, Germany
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Schnöckelborg EM, Khusniyarov MM, de Bruin B, Hartl F, Langer T, Eul M, Schulz S, Pöttgen R, Wolf R. Unraveling the electronic structures of low-valent naphthalene and anthracene iron complexes: X-ray, spectroscopic, and density functional theory studies. Inorg Chem 2012; 51:6719-30. [PMID: 22639983 DOI: 10.1021/ic300366m] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Naphthalene and anthracene transition metalates are potent reagents, but their electronic structures have remained poorly explored. A study of four Cp*-substituted iron complexes (Cp* = pentamethylcyclopentadienyl) now gives rare insight into the bonding features of such species. The highly oxygen- and water-sensitive compounds [K(18-crown-6){Cp*Fe(η(4)-C(10)H(8))}] (K1), [K(18-crown-6){Cp*Fe(η(4)-C(14)H(10))}] (K2), [Cp*Fe(η(4)-C(10)H(8))] (1), and [Cp*Fe(η(4)-C(14)H(10))] (2) were synthesized and characterized by NMR, UV-vis, and (57)Fe Mössbauer spectroscopy. The paramagnetic complexes 1 and 2 were additionally characterized by electron paramagnetic resonance (EPR) spectroscopy and magnetic susceptibility measurements. The molecular structures of complexes K1, K2, and 2 were determined by single-crystal X-ray crystallography. Cyclic voltammetry of 1 and 2 and spectroelectrochemical experiments revealed the redox properties of these complexes, which are reversibly reduced to the monoanions [Cp*Fe(η(4)-C(10)H(8))](-) (1(-)) and [Cp*Fe(η(4)-C(14)H(10))](-) (2(-)) and reversibly oxidized to the cations [Cp*Fe(η(6)-C(10)H(8))](+) (1(+)) and [Cp*Fe(η(6)-C(14)H(10))](+) (2(+)). Reduced orbital charges and spin densities of the naphthalene complexes 1(-/0/+) and the anthracene derivatives 2(-/0/+) were obtained by density functional theory (DFT) methods. Analysis of these data suggests that the electronic structures of the anions 1(-) and 2(-) are best represented by low-spin Fe(II) ions coordinated by anionic Cp* and dianionic naphthalene and anthracene ligands. The electronic structures of the neutral complexes 1 and 2 may be described by a superposition of two resonance configurations which, on the one hand, involve a low-spin Fe(I) ion coordinated by the neutral naphthalene or anthracene ligand L, and, on the other hand, a low-spin Fe(II) ion coordinated to a ligand radical L(•-). Our study thus reveals the redox noninnocent character of the naphthalene and anthracene ligands, which effectively stabilize the iron atoms in a low formal, but significantly higher spectroscopic oxidation state.
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Affiliation(s)
- Eva-Maria Schnöckelborg
- Institute of Inorganic and Analytical Chemistry, University of Münster, Corrensstrasse 30, 48149 Münster, Germany
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Tucher J, Wu Y, Nye LC, Ivanovic-Burmazovic I, Khusniyarov MM, Streb C. Metal substitution in a Lindqvist polyoxometalate leads to improved photocatalytic performance. Dalton Trans 2012; 41:9938-43. [DOI: 10.1039/c2dt30304c] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Meiners J, Scheibel MG, Lemée-Cailleau MH, Mason SA, Boeddinghaus MB, Fässler TF, Herdtweck E, Khusniyarov MM, Schneider S. Quadratisch-planare Iridium(II)- und Iridium(III)-Amidokomplexe mit einem PNP-Pinzettenliganden. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102795] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Meiners J, Scheibel MG, Lemée-Cailleau MH, Mason SA, Boeddinghaus MB, Fässler TF, Herdtweck E, Khusniyarov MM, Schneider S. Square-planar iridium(II) and iridium(III) amido complexes stabilized by a PNP pincer ligand. Angew Chem Int Ed Engl 2011; 50:8184-7. [PMID: 21744449 DOI: 10.1002/anie.201102795] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Indexed: 11/12/2022]
Abstract
Squaring the circle: the novel dienamido pincer ligand N(CHCHPtBu(2))(2)(-) affords the isolation of the unusual square-planar iridium(II) and iridium(III) amido complexes [IrCl{N(CHCHPtBu(2))(2)}](n) (n=0 (1), +1 (2)). In contrast, the corresponding iridium(I) complex of the redox series (n=-1) is surprisingly unstable. The diamagnetism of 2 is attributed to strong N→Ir π donation.
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Affiliation(s)
- Jenni Meiners
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität, Erlangen, Germany
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Askevold B, Khusniyarov MM, Herdtweck E, Meyer K, Schneider S. A square-planar ruthenium(II) complex with a low-spin configuration. Angew Chem Int Ed Engl 2011; 49:7566-9. [PMID: 20806300 DOI: 10.1002/anie.201002296] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bjorn Askevold
- Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching b. München, Germany
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Affiliation(s)
- Jeremiah J. Scepaniak
- Department of Chemistry and Biochemistry, MSC 3C, New Mexico State University, Las Cruces, NM 88003, USA
| | - Carola S. Vogel
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Marat M. Khusniyarov
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Frank W. Heinemann
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Karsten Meyer
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Jeremy M. Smith
- Department of Chemistry and Biochemistry, MSC 3C, New Mexico State University, Las Cruces, NM 88003, USA
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Khusniyarov MM, Bill E, Weyhermüller T, Bothe E, Wieghardt K. Hidden Noninnocence: Theoretical and Experimental Evidence for Redox Activity of a β-Diketiminate(1−) Ligand. Angew Chem Int Ed Engl 2011; 50:1652-5. [DOI: 10.1002/anie.201005953] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Indexed: 11/07/2022]
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Khusniyarov MM, Bill E, Weyhermüller T, Bothe E, Wieghardt K. Hidden Noninnocence: Theoretical and Experimental Evidence for Redox Activity of a β-Diketiminate(1−) Ligand. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005953] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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