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Ostermann N, Rotthowe N, Stückl AC, Siewert I. (Electro)chemical N 2 Splitting by a Molybdenum Complex with an Anionic PNP Pincer-Type Ligand. ACS ORGANIC & INORGANIC AU 2024; 4:329-337. [PMID: 38855335 PMCID: PMC11157508 DOI: 10.1021/acsorginorgau.3c00056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 06/11/2024]
Abstract
Molybdenum(III) complexes bearing pincer-type ligands are well-known catalysts for N2-to-NH3 reduction. We investigated herein the impact of an anionic PNP pincer-type ligand in a Mo(III) complex on the (electro)chemical N2 splitting ([LMoCl3]-, 1 -, LH = 2,6-bis((di-tert-butylphosphaneyl)methyl)-pyridin-4-one). The increased electron-donating properties of the anionic ligand should lead to a stronger degree of N2 activation. The catalyst is indeed active in N2-to-NH3 conversion utilizing the proton-coupled electron transfer reagent SmI2/ethylene glycol. The corresponding Mo(V) nitrido complex 2H exhibits similar catalytic activity as 1H and thus could represent a viable intermediate. The Mo(IV) nitrido complex 3 - is also accessible by electrochemical reduction of 1 - under a N2 atmosphere. IR- and UV/vis-SEC measurements suggest that N2 splitting occurs via formation of an "overreduced" but more stable [(L(N2)2Mo0)2μ-N2]2- dimer. In line with this, the yield in the nitrido complex increases with lower applied potentials.
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Affiliation(s)
- Nils Ostermann
- Georg-August-Universität
Göttingen, Institut für
Anorganische Chemie, Tammannstr.
4, Göttingen 37077, Germany
| | - Nils Rotthowe
- Georg-August-Universität
Göttingen, Institut für
Anorganische Chemie, Tammannstr.
4, Göttingen 37077, Germany
| | - A. Claudia Stückl
- Georg-August-Universität
Göttingen, Institut für
Anorganische Chemie, Tammannstr.
4, Göttingen 37077, Germany
| | - Inke Siewert
- Georg-August-Universität
Göttingen, Institut für
Anorganische Chemie, Tammannstr.
4, Göttingen 37077, Germany
- Georg-August-Universität
Göttingen, International Center
for Advanced Studies of Energy Conversion, Tammannstr. 6, Göttingen 37077, Germany
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2
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Sahoo SR, Bera D, Saha S, Goswami N. Switchable catalysis and CO 2 sensing by reduction resistant, luminescent copper-thiolate complexes. NANOSCALE 2022; 14:18051-18059. [PMID: 36448343 DOI: 10.1039/d2nr05396a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Metal-thiolate complexes have been the focus of research for several years because of their unique photophysical properties and their use as a precursor for synthesizing various well-defined metal nanoclusters. A rational understanding of their structure-property relationship is necessary to realize their full potential in practical applications. Herein, we demonstrate the synthesis of a unique copper-thiolate complex with reversibly switchable catalytic and photoluminescence (PL) properties. The as-synthesized complex at basic pH (Complex B) showed cyan PL with a strong peak at ∼488 nm (cyan) and a small shoulder peak at ∼528 nm (green). When the pH of the complex was changed to acidic (Complex A), the PL was switched to light green. Such pH-responsive PL properties were demonstrated to be useful for pH and CO2 sensing. The switchable properties originate from their two distinct structural states at two different pHs. We found that Complex A was resistant to high concentrations of a strong reducing agent, and had an intermediate oxidation state of copper (Cu+) with good thermodynamic stability. Furthermore, the switchable catalytic property was investigated with a 4-nitrophenol reduction and 3,3',5,5'-tetramethylbenzidine (TMB) oxidation reaction. The reduction kinetics followed pseudo-first-order, where the catalytic activity was enhanced by more than 103 times when Complex B was switched to Complex A. A similar trend was also observed for TMB oxidation. Our design strategy demonstrates that redox switchable metal-thiolate complexes could be a powerful candidate for a plethora of applications.
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Affiliation(s)
- Satya Ranjan Sahoo
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Debkumar Bera
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Sumit Saha
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Nirmal Goswami
- Materials Chemistry Department, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, Odisha 751013, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
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3
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Lee CH, Lin DJ, Pan HR, Wu J, Liu HK, Hsu HF. Reversible Conversion of Disulfide/Dithiolate Occurring at a Vanadium(IV) Center: A Biomimetic System for Redox Exchange in Vanabin. Inorg Chem 2022; 61:19882-19889. [PMID: 36441974 DOI: 10.1021/acs.inorgchem.2c03115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ascidians use a class of cysteine-rich proteins generally referred to as vanabins to reduce vanadium ions, one of the many biological processes that involve the redox conversion between disulfide and dithiolate mediated by transition-metal ions. To further understand the nature of disulfide/dithiolate exchange facilitated by a vanadium center, we report herein a six-coordinate non-oxido VIV complex containing an unbound disulfide moiety, [VIV(PS3″)(PS1″S-S)] (1) (PS3″ = [P(C6H3-3-Me3Si-2-S)3]3-, where PS1″S-S is a disulfide form of PS3″). Complex 1 is obtained from a reaction of previously reported [VV(PS3″)(PS2″SH)] (2) (PS2″SH = [P(C6H3-3-Me3Si-2-SH)(C6H3-3-Me3Si-2-S)2] with TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidin-1-yl)oxyl) via hydrogen atom transfer. Importantly, complex 1 can be reduced by two electrons to form an eight-coordinate VIV complex, [VIV(PS3″)2]2- (4). The reaction can be reversed through a two-electron oxidation process to regenerate complex 1. The redox pathways both proceed through a common intermediate, [V(PS3″)2]- (3), that has been previously reported as a resonance form of VV-dithiolate and a VIV-(thiolate)(thiyl-radical) species. This work demonstrates an unprecedented example of reversible disulfide/dithiolate interconversion mediated by a VIV center, as well as provides insights into understanding the function of VV reductases in vanabins.
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Affiliation(s)
- Cheng-Hsun Lee
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Ding-Jyun Lin
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hung-Ruei Pan
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - John Wu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hsin-Kuan Liu
- Core Facility Center, National Cheng Kung University, Tainan 701, Taiwan
| | - Hua-Fen Hsu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
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4
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Singh G, Pawan, Sharma S, Mohit, Satija P, Diksha, Priyanka, Thakur Y, Kaur A. Copper(II) Ion Promoted Reverse Solvatochromic Response of the Silatrane Probe to Spectral Shifts: Preferential Solvation and Computational Approach. Inorg Chem 2022; 61:12043-12061. [PMID: 35861652 DOI: 10.1021/acs.inorgchem.2c02184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The unique solvatochromic attitude of an analyte owing to its coordination with metal ions in solvents of different polarities is challenging. Herein, we introduce two new solvatochromic 4-(pentan-3-yl) benzaldehyde-based triazolyl silatrane probes (5 and 6). The solvatochromic behavior of both probes 5 and 6 was studied using Reichardt's E (30) and the Kamlet-Taft empirical scale by UV-visible spectra in 14 solvents (hydrogen-bond donor (HBD) and non-HBD), and the results show that probes 5 and 6 exhibit reverse solvatochromism. Probe 5 witnessed an enhancement in this behavior upon coordination with the Cu2+ ion in MeCN/MeOH solvents due to the intramolecular charge transfer (ICT) process. Interestingly, the binding of probe 5 with Cu2+ ions resulted in an instant color change in MeCN and MeOH from pale yellow to light blue and brown-red, respectively, which can be easily detected by the "naked eye". A solvatochromic study of the complex 5-Cu2+ in binary mixtures of polar aprotic and polar protic solvents (MeCN/MeOH) discloses that the latter are more preferred over polar aprotic solvents in the solvation microsphere. The entire metal coordination process of probe 5 toward the Cu2+ ion can be visualized and was further evaluated by UV-vis/fluorescence spectral titrations, Fourier transform infrared (FT-IR) spectroscopy, and theoretical calculations employing density functional theory (DFT) and time-dependent-DFT (TD-DFT). The proposed analytical approach is believed to play a crucial role in the solvatochromic study of higher coordinated silicon compounds, which may be utilized to develop a solvent-dependent sensor.
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Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Pawan
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Sanjay Sharma
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Mohit
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Pinky Satija
- School of Advanced Chemical Sciences, Shoolini University, Solan 173212, Himachal Pradesh, India
| | - Diksha
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Priyanka
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Yamini Thakur
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Amarjit Kaur
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
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5
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Reaction of N-Acetylcysteine with Cu 2+: Appearance of Intermediates with High Free Radical Scavenging Activity: Implications for Anti-/Pro-Oxidant Properties of Thiols. Int J Mol Sci 2022; 23:ijms23116199. [PMID: 35682881 PMCID: PMC9181168 DOI: 10.3390/ijms23116199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 11/16/2022] Open
Abstract
We studied the kinetics of the reaction of N-acetyl-l-cysteine (NAC or RSH) with cupric ions at an equimolar ratio of the reactants in aqueous acid solution (pH 1.4−2) using UV/Vis absorption and circular dichroism (CD) spectroscopies. Cu2+ showed a strong catalytic effect on the 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) radical (ABTSr) consumption and autoxidation of NAC. Difference spectra revealed the formation of intermediates with absorption maxima at 233 and 302 nm (ε302/Cu > 8 × 103 M−1 cm−1) and two positive Cotton effects centered at 284 and 302 nm. These intermediates accumulate during the first, O2-independent, phase of the NAC autoxidation. The autocatalytic production of another chiral intermediate, characterized by two positive Cotton effects at 280 and 333 nm and an intense negative one at 305 nm, was observed in the second reaction phase. The intermediates are rapidly oxidized by added ABTSr; otherwise, they are stable for hours in the reaction solution, undergoing a slow pH- and O2-dependent photosensitive decay. The kinetic and spectral data are consistent with proposed structures of the intermediates as disulfide-bridged dicopper(I) complexes of types cis-/trans-CuI2(RS)2(RSSR) and CuI2(RSSR)2. The electronic transitions observed in the UV/Vis and CD spectra are tentatively attributed to Cu(I) → disulfide charge transfer with an interaction of the transition dipole moments (exciton coupling). The catalytic activity of the intermediates as potential O2 activators via Cu(II) peroxo-complexes is discussed. A mechanism for autocatalytic oxidation of Cu(I)−thiolates promoted by a growing electronically coupled −[CuI2(RSSR)]n− polymer is suggested. The obtained results are in line with other reported observations regarding copper-catalyzed autoxidation of thiols and provide new insight into these complicated, not yet fully understood systems. The proposed hypotheses point to the importance of the Cu(I)−disulfide interaction, which may have a profound impact on biological systems.
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6
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Marvelous C, de Azevedo Santos L, Siegler MA, Fonseca Guerra C, Bouwman E. Probing the redox-conversion of Co(II)-disulfide to Co(III)-thiolate complexes: the effect of ligand-field strength. Dalton Trans 2022; 51:8046-8055. [PMID: 35551316 DOI: 10.1039/d2dt00356b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox-conversion reaction of cobalt(II)-disulfide to cobalt(III)-thiolate complexes triggered by addition of the bidentate ligand 2,2'-bipyridine has been investigated. Reaction of the cobalt(II)-disulfide complex [Co2(L1SSL1)(X)4] (L1SSL1 = di-2-(bis(2-pyridylmethyl)amino)-ethyldisulfide; X = Cl or Br) [1X] with 2,2'-bipyridine (bpy) resulted in the formation of two different products, namely the cobalt(III)-thiolate complex [Co(L1S)(bpy)]X2 and the unexpected side product [Co2(L1SSL1)(bpy)2(X)2]X2. Crystals of [Co2(L1SSL1)(bpy)2(Cl)2](BPh4)2 [2Cl](BPh4)2 obtained after anion exchange showed the cobalt(II) ions to be in octahedral geometries with the nitrogen donors of the disulfide ligand arranged in a facial conformation and the chloride ion trans to the tertiary amine nitrogen. Remarkably, this side product cannot be converted to the cobalt(III)-thiolate compound [Co(L1S)(bpy)](SbF6)2 [3](SbF6)2 by removal of the chloride ion with use of a silver salt, as this causes scrambling of the ligands, resulting in the formation of [Co(bpy)3]n+. [Co(L1S)(bpy)](SbF6)2 was obtained in a pure form by addition of bpy to a solution in acetonitrile of the compound [Co(L1S)(MeCN)2]2+ [4]2+. Addition of NEt4Cl to [3](SbF6)2 regenerates the cobalt(II)-disulfide complex [1Cl] as confirmed spectroscopically. DFT studies revealed that the conversion from [1Cl] to [3]2+ most likely occurs via the hypothetical intermediate species [2Cl]2+mer, in which the nitrogen atoms of the disulfide ligand are arranged in a meridional conformation. Interestingly, the estimated d-orbital splitting energy of [3]2+ is lower than that of [4]2+, indicating that the ligand-field strength of bpy is lower than anticipated, which hampers clean conversion in the redox-conversion reaction. This study shows that the redox-conversion reaction between cobalt(II)-disulfide and cobalt(III)-thiolate complexes is intricate rather than straightforward.
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Affiliation(s)
- Christian Marvelous
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
| | - Lucas de Azevedo Santos
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modelling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Maxime A Siegler
- Department of Chemistry, Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, USA
| | - Célia Fonseca Guerra
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modelling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Elisabeth Bouwman
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
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7
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Cobalt(II)-disulfide compounds with the unusual PF2O2– anion. ligand-dependent redox conversion to a cobalt(III)-thiolate complex. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.120880] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Marx M, Frauendorf H, Spannenberg A, Neumann H, Beller M. Revisiting Reduction of CO 2 to Oxalate with First-Row Transition Metals: Irreproducibility, Ambiguous Analysis, and Conflicting Reactivity. JACS AU 2022; 2:731-744. [PMID: 35373201 PMCID: PMC8970009 DOI: 10.1021/jacsau.2c00005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Indexed: 06/14/2023]
Abstract
Construction of higher C≥2 compounds from CO2 constitutes an attractive transformation inspired by nature's strategy to build carbohydrates. However, controlled C-C bond formation from carbon dioxide using environmentally benign reductants remains a major challenge. In this respect, reductive dimerization of CO2 to oxalate represents an important model reaction enabling investigations on the mechanism of this simplest CO2 coupling reaction. Herein, we present common pitfalls encountered in CO2 reduction, especially its reductive coupling, based on established protocols for the conversion of CO2 into oxalate. Moreover, we provide an example to systematically assess these reactions. Based on our work, we highlight the importance of utilizing suitable orthogonal analytical methods and raise awareness of oxidative reactions that can likewise result in the formation of oxalate without incorporation of CO2. These results allow for the determination of key parameters, which can be used for tailoring of prospective catalytic systems and will promote the advancement of the entire field.
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Affiliation(s)
- Maximilian Marx
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Holm Frauendorf
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Anke Spannenberg
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Helfried Neumann
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut
für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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9
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Maeda K, Kurahashi T, Matsubara S. Synthesis, Characterization and Chemical Behavior of Disulfide-bearing Mononuclear Transition Metal Complexes with the Rigid Structure. CHEM LETT 2021. [DOI: 10.1246/cl.210458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazuki Maeda
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Takuya Kurahashi
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
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10
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Hua SA, Paul LA, Oelschlegel M, Dechert S, Meyer F, Siewert I. A Bioinspired Disulfide/Dithiol Redox Switch in a Rhenium Complex as Proton, H Atom, and Hydride Transfer Reagent. J Am Chem Soc 2021; 143:6238-6247. [PMID: 33861085 DOI: 10.1021/jacs.1c01763] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The transfer of multiple electrons and protons is of crucial importance in many reactions relevant in biology and chemistry. Natural redox-active cofactors are capable of storing and releasing electrons and protons under relatively mild conditions and thus serve as blueprints for synthetic proton-coupled electron transfer (PCET) reagents. Inspired by the prominence of the 2e-/2H+ disulfide/dithiol couple in biology, we investigate herein the diverse PCET reactivity of a Re complex equipped with a bipyridine ligand featuring a unique SH···-S moiety in the backbone. The disulfide bond in fac-[Re(S-Sbpy)(CO)3Cl] (1, S-Sbpy = [1,2]dithiino[4,3-b:5,6-b']dipyridine) undergoes two successive reductions at equal potentials of -1.16 V vs Fc+|0 at room temperature forming [Re(S2bpy)(CO)3Cl]2- (12-, S2bpy = [2,2'-bipyridine]-3,3'-bis(thiolate)). 12- has two adjacent thiolate functions at the bpy periphery, which can be protonated forming the S-H···-S unit, 1H-. The disulfide/dithiol switch exhibits a rich PCET reactivity and can release a proton (ΔG°H+ = 34 kcal mol-1, pKa = 24.7), an H atom (ΔG°H• = 59 kcal mol-1), or a hydride ion (ΔG°H- = 60 kcal mol-1) as demonstrated in the reactivity with various organic test substrates.
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Affiliation(s)
- Shao-An Hua
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Lucas A Paul
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Manuel Oelschlegel
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Sebastian Dechert
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Franc Meyer
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany.,Universität Göttingen, International Center for Advanced Studies of Energy Conversion (ICASEC), Tammannstraße 6, D-37077 Göttingen, Germany
| | - Inke Siewert
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstraße 4, D-37077 Göttingen, Germany.,Universität Göttingen, International Center for Advanced Studies of Energy Conversion (ICASEC), Tammannstraße 6, D-37077 Göttingen, Germany
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11
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Mishra S, Bhandari A, Singh D, Gupta R, Olmstead MM, Patra AK. Bis(μ-thiolato)-dicopper Containing Fully Spin Delocalized Mixed Valence Copper-Sulfur Clusters and Their Electronic Structural Properties with Relevance to the Cu A Site. Inorg Chem 2021; 60:5779-5790. [PMID: 33829770 DOI: 10.1021/acs.inorgchem.1c00075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
With aromatic and aliphatic thiol-S donor Schiff base ligands, the copper-sulfur clusters, [(L1)8CuI6CuII2](ClO4)2·DMF·0.5CH3OH (1) and [(L2)12CuI5CuII11(μ4-S)(μ4-O)6](ClO4)·4H2O, respectively, have been reported ( Chem. Commun. 2017, 53, 3334); HL1/HL2 are 2-(((3-methylthiophen-2-yl)methylene)amino)benzene/ethanethiol). Complex 1 comprises a wheel shaped Cu8S8 framework, made up of interlinked Cu2{μ-S(R)}2 units. To understand the properties with relevance to the CuA site and to check whether self-assembly generates similar type clusters to 1, three complexes, [(L3)8CuI6CuII2](ClO4)2·(C2H5)2O·2.5H2O (2), [(L3Cl)8CuI6CuII2](ClO4)2·1.25(C2H5)2O·1.25CH3OH·2H2O (3), and [(L3CF3)8CuI6CuII2](ClO4)2·2(C2H5)2O·H2O (4) have been synthesized with supporting ligands HL3X (HL3 = 2-((furan-2-ylmethylene)amino)benzenethiol when X = -H; X = -Cl or -CF3 para to thiol-S are HL3Cl and HL3CF3 ligands, respectively). The X-ray structures of 3 and 4 feature a similar Cu8S8 architecture to 1. The spectroscopic properties and the X-ray structures revealed that 2-4 are fully spin delocalized mixed valence (MV) of class-III type clusters. The structural parameters of the N2Cu2{μ-S(R)}2 units of 3 and 4 closely resemble those of the MV binuclear CuA site. With the aid of UV-vis-NIR, EPR, and spectroelectrochemical studies, the electronic properties of these complexes have been described in comparison with the MV model complexes and CuA site.
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Affiliation(s)
- Saikat Mishra
- Department of Chemistry, National Institute of Technology Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
| | - Anirban Bhandari
- Department of Chemistry, National Institute of Technology Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
| | - Devender Singh
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Rajeev Gupta
- Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Marilyn M Olmstead
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Apurba K Patra
- Department of Chemistry, National Institute of Technology Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
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12
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Khamespanah F, Marx M, Crochet DB, Pokharel UR, Fronczek FR, Maverick AW, Beller M. Oxalate production via oxidation of ascorbate rather than reduction of carbon dioxide. Nat Commun 2021; 12:1997. [PMID: 33767134 PMCID: PMC7994792 DOI: 10.1038/s41467-021-21817-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 02/02/2021] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - Maximilian Marx
- Leibniz Institute for Catalysis at the University of Rostock, Rostock, Germany
| | - David B Crochet
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, USA
| | - Uttam R Pokharel
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, USA.,Department of Chemistry and Physical Sciences, Nicholls State University, Thibodaux, LA, USA
| | - Frank R Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, USA
| | - Andrew W Maverick
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, USA.
| | - Matthias Beller
- Leibniz Institute for Catalysis at the University of Rostock, Rostock, Germany.
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13
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Uraev AI, Nefedov SE, Lyssenko KA, Vlasenko VG, Ikorskii VN, Garnovskii DA, Makarova NI, Levchenkov SI, Shcherbakov IN, Milenković MR, Borodkin GS. Synthesis, structure, spectroscopic studies and magnetic properties of Cu2N2O4-, Cu2N2O2(S2)-, Cu2N2S4-chromophores based on aminomethylene derivatives of pyrazole-5-one(thione). Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Nickel(II)‐Mediated Reversible Thiolate/Disulfide Conversion as a Mimic for a Key Step of the Catalytic Cycle of Methyl‐Coenzyme M Reductase. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Wu T, Zhao F, Hu Q, Cui Y, Huang T, Zheng D, Liu Q, Lei Y, Jia L, Luo C. Structural characterization, DFT studied, luminescent properties of cationic/neutral three‐coordinated copper (I) complexes and application in warm‐white light‐emitting diode. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tian‐Cheng Wu
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Fang‐Zheng Zhao
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Qiao‐Long Hu
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Yi‐Shun Cui
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Ting‐Hong Huang
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
- School of Materials and Energy University of Electronic Science and Technology of China Chengdu 611731 China
| | - Dan Zheng
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Qiang Liu
- College of Chemistry and Environmental Protection Engineering Southwest University for Nationalities Chengdu 610041 China
| | - Ying Lei
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Lin Jia
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
| | - Cheng Luo
- School of Chemical Engineering Sichuan University of Science & Engineering Zigong 643000 China
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16
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Bhandari A, Mishra S, Maji RC, Kumar A, Olmstead MM, Patra AK. Nickel(II)‐Mediated Reversible Thiolate/Disulfide Conversion as a Mimic for a Key Step of the Catalytic Cycle of Methyl‐Coenzyme M Reductase. Angew Chem Int Ed Engl 2020; 59:9177-9185. [DOI: 10.1002/anie.202001363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Indexed: 01/22/2023]
Affiliation(s)
- Anirban Bhandari
- Department of Chemistry National Institute of Technology Durgapur Mahatma Gandhi Avenue Durgapur 713 209 (WB) India
| | - Saikat Mishra
- Department of Chemistry National Institute of Technology Durgapur Mahatma Gandhi Avenue Durgapur 713 209 (WB) India
| | - Ram Chandra Maji
- Department of Chemistry National Institute of Technology Durgapur Mahatma Gandhi Avenue Durgapur 713 209 (WB) India
| | - Akhilesh Kumar
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
| | | | - Apurba K. Patra
- Department of Chemistry National Institute of Technology Durgapur Mahatma Gandhi Avenue Durgapur 713 209 (WB) India
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17
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Alvarez S. Coordinating Ability of Anions, Solvents, Amino Acids, and Gases towards Alkaline and Alkaline-Earth Elements, Transition Metals, and Lanthanides. Chemistry 2020; 26:4350-4377. [PMID: 31910294 DOI: 10.1002/chem.201905453] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Indexed: 02/06/2023]
Abstract
After briefly reviewing the applications of the coordination ability indices proposed earlier for anions and solvents toward transition metals and lanthanides, a new analysis of crystal structures is applied now to a much larger number of coordinating species: anions (including those that are present in ionic solvents), solvents, amino acids, gases, and a sample of neutral ligands. The coordinating ability towards s-block elements is now also considered. The effect of several factors on the coordinating ability will be discussed: (a) the charge of an anion, (b) the chelating nature of anions and solvents, (c) the degree of protonation of oxo-anions, carboxylates and amino carboxylates, and (d) the substitution of hydrogen atoms by methyl groups in NH3 , ethylenediamine, benzene, ethylene, pyridine and aldehydes. Hit parades of solvents and anions most commonly used in the areas of transition metal, s-block and lanthanide chemistry are deduced from the statistics of their presence in crystal structures.
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Affiliation(s)
- Santiago Alvarez
- Department de Química Inorgànica i Orgànica, Secció de Química Inorgànica and, Institut de Química Teòrica i Computacional, Universitat de Barcelona, Martí i Franquès, 1-11, 08028, Barcelona, Spain
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18
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Abstract
Metal–ligand cooperative redox reactions and intramolecular group transfer of a P–P containing dicobalt(i) species are shown.
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Affiliation(s)
- Seji Kim
- Department of Chemistry
- KAIST
- Daejeon, 34141
- Republic of Korea
| | - Yunho Lee
- Department of Chemistry
- KAIST
- Daejeon, 34141
- Republic of Korea
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19
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Minami K, Kuwamura N, Yoshinari N, Konno T. Controlled Formation of Thiol-Thiolate Hydrogen versus Disulfide Bonds between Two Iridium(III) Centers. Chem Asian J 2019; 14:3291-3294. [PMID: 31478604 DOI: 10.1002/asia.201901032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/01/2019] [Indexed: 11/06/2022]
Abstract
Here, we report an iridium(III) coordination system with 2-aminoethanethiolate (aet), which shows the formation of S-H⋅⋅⋅S hydrogen and S-S disulfide bonds in a controlled manner. Treatment of fac-[Ir(aet)3 ] with aqueous HBF4 under aerobic conditions gave dinuclear [Ir2 (aet)4 (cysta)]2+ ([1]2+ ; cysta=cystamine) with a single S-S disulfide bond, while dimeric [Ir2 (aet)3 (Haet)3 ](BF4 )3 ([2](BF4 )3 ) with a triple S-H⋅⋅⋅S hydrogen bond was formed by similar treatment under anaerobic conditions. Upon exposure to air, [2]3+ was converted to dinuclear [Ir2 (aet)2 (Haet)2 (cysta)]4+ ([3]4+ ), in which two IrIII centers are spanned by a double S-H⋅⋅⋅S hydrogen bond and a single S-S disulfide bond. Complex [3]4+ was interconvertible with [1]2+ via the removal/addition of protons on S donors, accompanied by the intermolecular exchange of the fac-[Ir(aet)3 ] units. Complexes [1]2+ , [2]3+ , and [3]4+ , isolated as BF4 - salts, were fully characterized by single-crystal X-ray crystallography.
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Affiliation(s)
- Katsue Minami
- Osaka University, Department of Chemistry, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Naoto Kuwamura
- Osaka University, Department of Chemistry, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Nobuto Yoshinari
- Osaka University, Department of Chemistry, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Takumi Konno
- Osaka University, Department of Chemistry, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
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20
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Petrov AI, Dergachev VD. Palladium(II) Ion Mediated Disulfide/Thiolate Interconversion: Predicting the Disulfide Group State from First Principles. J Phys Chem A 2019; 123:4873-4882. [PMID: 31117586 DOI: 10.1021/acs.jpca.9b00740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Different reactivity of homologous disulfides toward Pd2+ was previously reported: stepwise complexation to Pd2+ for l-cystine and cystamine ligands, while for dl-homocystine and 3,3'-dithiodipropionic acid, disulfide's disproportionation toward thiolate and sulfinic acid complexes is observed. The disulfide/thiolate interconversion of four different disulfide ligands in the presence of nonredox metal cation Pd2+ in aqueous solution has been computationally investigated. We see this different reactivity in different capacities of considered homologous disulfides to stabilize forming S,S'-binuclear complexes, which are believed to be key intermediates toward interconversion products. We thus devise a theoretical model that rationalizes experimentally observed phenomenon of disulfides different reactivity toward nonredox transition metal cation Pd2+.
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Affiliation(s)
- Alexander I Petrov
- Institute of Chemistry and Chemical Technology SB RAS , Federal Research Center "Krasnoyarsk Science Center SB RAS" , Krasnoyarsk 660014 , Russian Federation
| | - Vsevolod D Dergachev
- Department of Chemistry , University of Nevada , Reno 89557 , United States.,Institute of Informatics and Telecommunications , Siberian State Aerospace University , Krasnoyarsk 660014 , Russian Federation
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21
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Xu L, Xu J, Zhu J, Yao Z, Yu N, Deng W, Wang Y, Lin B. Universal Anticancer Cu(DTC)
2
Discriminates between Thiols and Zinc(II) Thiolates Oxidatively. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luyan Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jialin Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Jingwei Zhu
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Zijian Yao
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Na Yu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Wei Deng
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Yu Wang
- Shanghai Synchrotron Radiation FacilityShanghai Advanced Research InstituteChinese Academy of Sciences 239 Zhangheng Road, Pudong New District Shanghai 201204 China
| | - Bo‐Lin Lin
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
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22
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Xu L, Xu J, Zhu J, Yao Z, Yu N, Deng W, Wang Y, Lin B. Universal Anticancer Cu(DTC)
2
Discriminates between Thiols and Zinc(II) Thiolates Oxidatively. Angew Chem Int Ed Engl 2019; 58:6070-6073. [DOI: 10.1002/anie.201814519] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Luyan Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jialin Xu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Jingwei Zhu
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Zijian Yao
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Na Yu
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
| | - Wei Deng
- School of Chemical and Environmental EngineeringShanghai Institute of Technology 100 Haiquan Road, Fengxian District Shanghai 201418 P. R. China
| | - Yu Wang
- Shanghai Synchrotron Radiation FacilityShanghai Advanced Research InstituteChinese Academy of Sciences 239 Zhangheng Road, Pudong New District Shanghai 201204 China
| | - Bo‐Lin Lin
- School of Physical Science and TechnologyShanghaiTech University 393 Middle Huaxia Road, Pudong new area Shanghai 201210 P. R. China
- Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
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23
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Understanding Factors that Control the Structural (Dis)Assembly of Sulphur-Bridged Bimetallic Sites. INORGANICS 2019. [DOI: 10.3390/inorganics7040042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Bimetallic structures of the general type [M2(µ-S)2] are omnipresent in nature, for biological function [M2(µ-S)2] sites interconvert between electronically distinct, but isostructural, forms. Different from structure-function relationships, the current understanding of the mechanism of formation and persistence of [M2(µ-S)2] sites is poorly developed. This work reports on bimetallic model compounds of nickel that interconvert between functional structures [Ni2(µ-S)2]+/2+ and isomeric congeners [2{κ-S–Ni}]2+/+, S = Aryl-S−, in which the nickel ions are geometrically independent. Interconversion of the two sets of structures was studied quantitatively by UV–VIS absorption spectroscopy and cyclic voltammetry. Assembly of the [Ni2(µ-S)2]+ core from [2{κ-S–Ni}]+ is thermodynamically and kinetically highly preferred over the disassembly of [Ni2(µ-S)2]2+ into [2{κ-S–Ni}]2+. Labile Ni-η2/3-bonding to aromatic π-systems of the primary thiophenol ligand is critical for modeling (dis)assembly processes. A phosphine coligand mimics the role of anionic donors present in natural sites that saturate metal coordination. Three parameters have been identified as critical for structure formation and persistence. These are, first, the stereoelectronic properties of the metals ions, second, the steric demand of the coligand, and, third, the properties of the dative bond between nickel and coligand. The energies of transition states connecting functional and precursor forms have been found to depend on these parameters.
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24
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Mehlmann P, Dielmann F. Switching the Electron-Donating Ability of Phosphines through Proton-Responsive Imidazolin-2-ylidenamino Substituents. Chemistry 2019; 25:2352-2357. [PMID: 30506604 DOI: 10.1002/chem.201805540] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 11/06/2022]
Abstract
Stimuli-responsive ancillary ligands are valuable tools to control the activity and selectivity of transition-metal catalysts. The synthesis and characterization of a series of metal complexes containing phosphines with proton-responsive imidazolin-2-ylidenamino substituents are reported. Determination of the ligand-donor properties revealed that protonation of each substituent increases the Tolman electronic parameter (TEP) of the phosphine by 22 cm-1 , hence allowing for switching of the electron-donor power of phosphine 2 within an unprecedented range (ΔTEP=43.4 cm-1 ).
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Affiliation(s)
- Paul Mehlmann
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstrasse 30, 48149, Münster, Germany
| | - Fabian Dielmann
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstrasse 30, 48149, Münster, Germany
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25
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Jiang F, Siegler MA, Bouwman E. Synthesis and characterization of a series of transition metal compounds of thioether and disulfide ligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Jiang F, Siegler MA, Bouwman E. The Reactivity of Fe
II
and Co
II
Disulfide Compounds with Dihydrogen Peroxide. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Jiang
- Leiden Institute of Chemistry Gorlaeus Laboratories Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Maxime A. Siegler
- Department of Chemistry Gorlaeus Laboratories Johns Hopkins University 3400 N. Charles Street 21218 Baltimore Maryland United States
| | - Elisabeth Bouwman
- Leiden Institute of Chemistry Gorlaeus Laboratories Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
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27
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Kokubo Y, Yamamoto C, Tsuzuki K, Nagai T, Katayama A, Ohta T, Ogura T, Wasada-Tsutsui Y, Kajita Y, Kugimiya S, Masuda H. Dinitrogen Fixation by Vanadium Complexes with a Triamidoamine Ligand. Inorg Chem 2018; 57:11884-11894. [DOI: 10.1021/acs.inorgchem.8b00982] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Yoshiaki Kokubo
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
| | - Chiaki Yamamoto
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
| | - Kazuki Tsuzuki
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
| | - Takuya Nagai
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Akira Katayama
- Department of Nanopharmaceutical Science, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Takehiro Ohta
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, RSC-UH LP Center, Hyogo 679-5148, Japan
| | - Takashi Ogura
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, RSC-UH LP Center, Hyogo 679-5148, Japan
| | - Yuko Wasada-Tsutsui
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Yuji Kajita
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
| | - Shinichi Kugimiya
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
| | - Hideki Masuda
- Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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28
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Jiang F, Siegler MA, Sun X, Jiang L, Fonseca Guerra C, Bouwman E. Redox Interconversion between Cobalt(III) Thiolate and Cobalt(II) Disulfide Compounds. Inorg Chem 2018; 57:8796-8805. [PMID: 30024150 PMCID: PMC6150680 DOI: 10.1021/acs.inorgchem.8b00549] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The redox interconversion
between Co(III) thiolate and Co(II) disulfide
compounds has been investigated experimentally and computationally.
Reactions of cobalt(II) salts with disulfide ligand L1SSL1 (L1SSL1 = di-2-(bis(2-pyridylmethyl)amino)-ethyl
disulfide) result in the formation of either the high-spin cobalt(II)
disulfide compound [CoII2(L1SSL1)Cl4] or a low-spin, octahedral cobalt(III) thiolate
compound, such as [CoIII(L1S)(MeCN)2](BF4)2. Addition of thiocyanate anions to
a solution containing the latter compound yielded crystals of [CoIII(L1S)(NCS)2]. The addition of chloride
ions to a solution of [CoIII(L1S)(MeCN)2](BF4)2 in acetonitrile results in conversion
of the cobalt(III) thiolate compound to the cobalt(II) disulfide compound
[CoII2(L1SSL1)Cl4], as monitored with UV–vis spectroscopy; subsequent addition
of AgBF4 regenerates the Co(III) compound. Computational
studies show that exchange by a chloride anion of the coordinated
acetonitrile molecule or thiocyanate anion in compounds [CoIII(L1S)(MeCN)2]2+ and [CoIII(L1S)(NCS)2] induces a change in the character
of the highest occupied molecular orbitals, showing a decrease of
the contribution of the p orbital on sulfur and an increase of the
d orbital on cobalt. As a comparison, the synthesis of iron compounds
was undertaken. X-ray crystallography revealed that structure of the
dinuclear iron(II) disulfide compound [FeII2(L1SSL1)Cl4] is different from that
of cobalt(II) compound [CoII2(L1SSL1)Cl4]. In contrast to cobalt, reaction of ligand
L1SSL1 with [Fe(MeCN)6](BF4)2 did not yield the expected Fe(III) thiolate compound.
This work is an unprecedented example of redox interconversion between
a high-spin Co(II) disulfide compound and a low-spin Co(III) thiolate
compound triggered by the nature of the anion. Low-spin
CoIII−thiolate compounds and
high-spin CoII and FeII disulfide compound have
been synthesized from reactions of a disulfide ligand with CoII and FeII salts. The redox interconversion between
the cobalt compounds has been investigated. It is shown that addition
of chloride ions to a solution of the CoIII−thiolate
compound results in the formation of the CoII-disulfide
compound, whereas removal of chloride anions from the CoII disulfide compound regenerates the CoIII−thiolate
complex.
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Affiliation(s)
- Feng Jiang
- Leiden Institute of Chemistry, Gorlaeus Laboratories , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands
| | - Maxime A Siegler
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States
| | - Xiaobo Sun
- Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) , Vrije Universiteit Amsterdam , De Boelelaan 1083 , 1081 HV Amsterdam , The Netherlands
| | - Lin Jiang
- Leiden Institute of Chemistry, Gorlaeus Laboratories , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands
| | - Célia Fonseca Guerra
- Leiden Institute of Chemistry, Gorlaeus Laboratories , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands.,Department of Theoretical Chemistry, Amsterdam Center for Multiscale Modeling (ACMM) , Vrije Universiteit Amsterdam , De Boelelaan 1083 , 1081 HV Amsterdam , The Netherlands
| | - Elisabeth Bouwman
- Leiden Institute of Chemistry, Gorlaeus Laboratories , Leiden University , P.O. Box 9502, 2300 RA Leiden , The Netherlands
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29
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Wang L, Cantú Reinhard FG, Philouze C, Demeshko S, de Visser SP, Meyer F, Gennari M, Duboc C. Solvent‐ and Halide‐Induced (Inter)conversion between Iron(II)‐Disulfide and Iron(III)‐Thiolate Complexes. Chemistry 2018; 24:11973-11982. [DOI: 10.1002/chem.201801377] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Indexed: 02/01/2023]
Affiliation(s)
- Lianke Wang
- Université Grenoble AlpesUMR CNRS 5250Département de Chimie Moléculaire 38000 Grenoble France
| | - Fabián G. Cantú Reinhard
- Manchester Institute of BiotechnologySchool of Chemical Engineering and Analytical ScienceThe University of Manchester 131 Princess Street Manchester M1 7DN United Kingdom
| | - Christian Philouze
- Université Grenoble AlpesUMR CNRS 5250Département de Chimie Moléculaire 38000 Grenoble France
| | - Serhiy Demeshko
- Institut für Anorganische ChemieUniversität Göttingen Tammannstrasse 4 D-37077 Göttingen Germany
| | - Sam P. de Visser
- Manchester Institute of BiotechnologySchool of Chemical Engineering and Analytical ScienceThe University of Manchester 131 Princess Street Manchester M1 7DN United Kingdom
| | - Franc Meyer
- Institut für Anorganische ChemieUniversität Göttingen Tammannstrasse 4 D-37077 Göttingen Germany
| | - Marcello Gennari
- Université Grenoble AlpesUMR CNRS 5250Département de Chimie Moléculaire 38000 Grenoble France
| | - Carole Duboc
- Université Grenoble AlpesUMR CNRS 5250Département de Chimie Moléculaire 38000 Grenoble France
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30
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Kroneck PMH. Walking the seven lines: binuclear copper A in cytochrome c oxidase and nitrous oxide reductase. J Biol Inorg Chem 2017; 23:27-39. [PMID: 29218634 DOI: 10.1007/s00775-017-1510-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 10/20/2017] [Indexed: 01/19/2023]
Abstract
The enzymes nitrous oxide reductase (N2OR) and cytochrome c oxidase (COX) are constituents of important biological processes. N2OR is the terminal reductase in a respiratory chain converting N2O to N2 in denitrifying bacteria; COX is the terminal oxidase of the aerobic respiratory chain of certain bacteria and eukaryotic organisms transforming O2 to H2O accompanied by proton pumping. Different spectroscopies including magnetic resonance techniques, were applied to show that N2OR has a mixed-valent Cys-bridged [Cu1.5+(CyS)2Cu1.5+] copper site, and that such a binuclear center, called CuA, does also exist in COX. A sequence motif shared between the CuA center of N2OR and the subunit II of COX raises the issue of a putative evolutionary relationship of the two enzymes. The suggestion of a binuclear CuA in COX, with one unpaired electron delocalized between two equivalent Cu nuclei, was difficult to accept originally, even though regarded as a clever solution to many experimental observations. This minireview in honor of Helmut Sigel traces several of the critical steps forward in understanding the nature of CuA in N2OR and COX, and discusses its unique electronic features to some extent including the contributions made by the development of methodology and the discovery of a novel multi-copper enzyme. Left: X-band (9.130 GHz) and C-band (4.530 GHz, 1st harmonic display of experimental spectrum) EPR spectra of bovine heart cytochrome c oxidase, recorded at 20K. Right: Ribbon presentation of the CuA domain in cytochrome c oxidase and nitrous oxide reductase.
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Affiliation(s)
- Peter M H Kroneck
- Department of Biology, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany.
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31
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Copper(II) complex derived from axial chiral heterocyclic spiro ligand: Crystal structure, characterization and SOD activity. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.10.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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Arnold PL, Turner ZR. Carbon oxygenate transformations by actinide compounds and catalysts. Nat Rev Chem 2017. [DOI: 10.1038/s41570-016-0002] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Nakajima T, Kawasaki Y, Kure B, Tanase T. Homo‐ and Heterodinuclear Rh and Ir Complexes Supported by SN
n
Mixed‐Donor Ligands (
n
= 2–4): Stereochemistry and Coordination‐Site‐Exchange Reactions of Cp*M (M = Rh, Ir) Units. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takayuki Nakajima
- Department of Chemistry Faculty of Science Nara Women's University Kitauoya‐nishi‐machi 630‐8506 Nara Japan
| | - Yuki Kawasaki
- Department of Chemistry Faculty of Science Nara Women's University Kitauoya‐nishi‐machi 630‐8506 Nara Japan
| | - Bunsho Kure
- Department of Chemistry Faculty of Science Nara Women's University Kitauoya‐nishi‐machi 630‐8506 Nara Japan
| | - Tomoaki Tanase
- Department of Chemistry Faculty of Science Nara Women's University Kitauoya‐nishi‐machi 630‐8506 Nara Japan
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Porter TR, Capitao D, Kaminsky W, Qian Z, Mayer JM. Synthesis, Radical Reactivity, and Thermochemistry of Monomeric Cu(II) Alkoxide Complexes Relevant to Cu/Radical Alcohol Oxidation Catalysis. Inorg Chem 2016; 55:5467-75. [PMID: 27171230 DOI: 10.1021/acs.inorgchem.6b00491] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Two new monomeric Cu(II) alkoxide complexes were prepared and fully characterized as models for intermediates in copper/radical mediated alcohol oxidation catalysis: Tp(tBuR)Cu(II)OCH2CF3 with Tp(tBu) = hydro-tris(3-tert-butyl-pyrazol-1-yl)borate 1 or Tp(tBuMe) = hydro-tris(3-tert-butyl-5-methyl-pyrazol-1-yl)borate 2. These complexes were made as models for potential intermediates in enzymatic and synthetic catalytic cycles for alcohol oxidation. However, the alkoxide ligands are not readily oxidized by loss of H; instead, these complexes were found to be hydrogen atom acceptors. They oxidize the hydroxylamine TEMPOH, 2,4,6-tri-t-butylphenol, and 1,4-cyclohexadiene to the nitroxyl radical, phenoxyl radical, and benzene, with formation of HOCH2CF3 (TFE) and the Cu(I) complexes Tp(tBuR)Cu(I)-MeCN in dichloromethane/1% MeCN or 1/2 [Tp(tBuR)Cu(I)]2 in toluene. On the basis of thermodynamics and kinetics arguments, these reactions likely proceed through concerted proton-electron transfer mechanisms. Thermochemical analyses give lower limits for the "effective bond dissociation free energies (BDFE)" of the O-H bonds in 1/2[Tp(tBuR)Cu(I)]2 + TFE and upper limits for the free energies associated with alkoxide oxidations via hydrogen atom transfer (effective alkoxide α-C-H BDFEs). These values are summations of the free energies of multiple chemical steps, which include the energetically favorable formation of 1/2[Tp(tBuR)Cu(I)]2. The effective alkoxide α-C-H bonds are very weak, BDFE ≤ 38 ± 4 kcal mol(-1) for 1 and ≤44 ± 5 kcal mol(-1) for 2 (gas-phase estimates), because C-H homolysis is thermodynamically coupled to one electron transfer to Cu(II) as well as the favorable formation of the 1/2[Tp(tBuR)Cu(I)]2 dimer. Treating 1 with the H atom acceptor (t)Bu3ArO(•) did not result in the expected alkoxide oxidation to an aldehyde, but rather net 2,2,2-trifluoroethoxyl radical transfer occurred to generate an unusual 2-substituted dienone-ether product. Treating 2 with (t)Bu3ArO(•) gives no reaction, despite evidence that overall ligand oxidation and formation of 1/2[Tp(tBuMe)Cu(I)]2 is significantly exoergic. The origin of this lack of reactivity may be due to insufficient weakening of the alcohol α-C-H bond upon complexation to copper.
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Affiliation(s)
- Thomas R Porter
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - Dany Capitao
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - Werner Kaminsky
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - Zhaoshen Qian
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
| | - James M Mayer
- Department of Chemistry, University of Washington , Box 351700, Seattle, Washington 98195, United States
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Mu J, Zhao X, Li J, Yang EC, Zhao XJ. Novel hierarchical NiO nanoflowers exhibiting intrinsic superoxide dismutase-like activity. J Mater Chem B 2016; 4:5217-5221. [DOI: 10.1039/c6tb01390b] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel hierarchical NiO nanoflowers assembled by ultrathin nanoflakes were found to exhibit intrinsic superoxide dismutase-like activity for the first time.
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Affiliation(s)
- Jianshuai Mu
- College of Chemistry
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - Xin Zhao
- College of Chemistry
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - Jie Li
- College of Chemistry
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - En-Cui Yang
- College of Chemistry
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
| | - Xiao-Jun Zhao
- College of Chemistry
- Key Laboratory of Inorganic–Organic Hybrid Functional Material Chemistry
- Ministry of Education
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- Tianjin Normal University
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Gennari M, Brazzolotto D, Yu S, Pécaut J, Philouze C, Rouzières M, Clérac R, Orio M, Duboc C. Effect of the Metal on Disulfide/Thiolate Interconversion: Manganese versus Cobalt. Chemistry 2015; 21:18770-8. [DOI: 10.1002/chem.201502996] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/02/2015] [Indexed: 11/05/2022]
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Ording-Wenker EC, Siegler MA, Bouwman E. Coordination of new disulfide ligands to CuI and CuII: Does a CuII μ-thiolate complex form? Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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39
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Zhou YH, Tao J, Lv QC, Jia WG, Yun RR, Cheng Y. Effect of the amide groups on superoxide dismutation catalyzed by copper(II) complexes of adamantane. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.11.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ording-Wenker ECM, Siegler MA, Lutz M, Bouwman E. Catalytic catechol oxidation by copper complexes: development of a structure–activity relationship. Dalton Trans 2015; 44:12196-209. [DOI: 10.1039/c5dt01041a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High activity for the catalytic oxidation of 3,5-di-tert-butylcatechol was achieved with complexes of ligands that stabilize the biomimetic CuII μ-thiolate complex, hinting at a similarity with the required Cu-oxo intermediates.
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Affiliation(s)
| | | | - Martin Lutz
- Bijvoet Center for Biomolecular Research
- Utrecht University
- 3584 CH Utrecht
- The Netherlands
| | - Elisabeth Bouwman
- Leiden Institute of Chemistry
- Gorlaeus Laboratories
- Leiden University
- 2300 RA Leiden
- The Netherlands
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41
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Ording-Wenker ECM, van der Plas M, Siegler MA, Fonseca Guerra C, Bouwman E. Protonation of a Biologically Relevant CuIIμ-Thiolate Complex: Ligand Dissociation or Formation of a Protonated CuIDisulfide Species? Chemistry 2014; 20:16913-21. [DOI: 10.1002/chem.201403918] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Indexed: 11/06/2022]
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42
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Ording-Wenker ECM, van der Plas M, Siegler MA, Bonnet S, Bickelhaupt FM, Fonseca Guerra C, Bouwman E. Thermodynamics of the Cu(II) μ-thiolate and Cu(I) disulfide equilibrium: a combined experimental and theoretical study. Inorg Chem 2014; 53:8494-504. [PMID: 25090284 DOI: 10.1021/ic501060w] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The redox equilibrium between dinuclear Cu(II) μ-thiolate and Cu(I) disulfide structures has been analyzed experimentally and via DFT calculations. Two new ligands, L(2)SSL(2) and L(4)SSL(4), and their Cu(II) μ-thiolate and Cu(I) disulfide complexes were synthesized. For L(2)SSL(2), these two redox-isomeric copper species are shown to be in equilibrium, which depends on both temperature and solvent. For L(4)SSL(4) the μ-thiolate species forms as the kinetic product and further evolves into the disulfide complex under thermodynamic control, which creates the unprecedented possibility to compare both species under the same reaction conditions. The energies of the μ-thiolate and disulfide complexes for two series of related ligands have been calculated with DFT; the results rationalize the experimentally observed structures, and emphasize the important role that steric requirements play in the formation of the Cu(II) thiolate structure.
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Affiliation(s)
- Erica C M Ording-Wenker
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
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Gennari M, Gerey B, Hall N, Pécaut J, Collomb MN, Rouzières M, Clérac R, Orio M, Duboc C. A Bio-Inspired Switch Based on Cobalt(II) Disulfide/Cobalt(III) Thiolate Interconversion. Angew Chem Int Ed Engl 2014; 53:5318-21. [DOI: 10.1002/anie.201402125] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Indexed: 11/08/2022]
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44
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Gennari M, Gerey B, Hall N, Pécaut J, Collomb MN, Rouzières M, Clérac R, Orio M, Duboc C. A Bio-Inspired Switch Based on Cobalt(II) Disulfide/Cobalt(III) Thiolate Interconversion. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402125] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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