1
|
Elvers BJ, Krewald V, Schulzke C, Fischer C. Reduction induced S-nucleophilicity in mono-dithiolene molybdenum complexes - in situ generation of sulfonium ligands. Chem Commun (Camb) 2021; 57:12615-12618. [PMID: 34755726 DOI: 10.1039/d1cc05335c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction of a molybdenum monodithiolene complex, [Mo(CO)2(dt)(dppe)], in the presence of dichloromethane leads to the transfer of CH2 to sulfur and respective sulfonium species. Detailed analytical and mechanistical spectroscopic and electrochemical studies reveal the reasons for the unexpected formation and composition of the very unusual resultant complexes to be electronic-energetic in nature.
Collapse
Affiliation(s)
- Benedict J Elvers
- Universität Greifswald, Institut für Biochemie, Felix-Hausdorff-Str. 4, Greifswald, Germany.
| | - Vera Krewald
- Technische Universität Darmstadt, Fachbereich Chemie, Theoretische Chemie, Alarich-Weiss-Str. 4, 64287 Darmstadt, Germany.
| | - Carola Schulzke
- Universität Greifswald, Institut für Biochemie, Felix-Hausdorff-Str. 4, Greifswald, Germany.
| | - Christian Fischer
- Universität Greifswald, Institut für Biochemie, Felix-Hausdorff-Str. 4, Greifswald, Germany.
| |
Collapse
|
2
|
Börner M, Fuhrmann D, Klose J, Krautscheid H, Kersting B. Ethereal Hydroperoxides: Powerful Reagents for S-Oxygenation of Bridging Thiophenolate Functions. Inorg Chem 2021; 60:13517-13527. [PMID: 34415154 DOI: 10.1021/acs.inorgchem.1c01854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
S-Oxygenation of thiophenolate bridges by ethereal hydroperoxides was studied. [NiII2LS(PhCO2)]+ (1), where LS = macrocyclic aminethiolate supporting ligand, is S-oxygenated readily in a mixed methanol/acetonitrile solution with ether/dioxygen at room temperature in the presence of daylight. The reactions were found to depend strongly on the choice of the ether. Uptake of two O atoms occurs in dioxane to give a mixed thiolate/sulfinate complex [NiII2LSO2(PhCO2)]+ (2) containing the rare five-membered Ni(μ1,1-S)(μ1,2-OS)Ni core. In tetrahydrofuran, four O atoms are taken up by 1 to generate the bis(sulfinate) species [NiII2LSO4(PhCO2)]+ (3). A mono-S-oxygenated sulfenate intermediate can be detected by electrospray ionization mass spectrometry. The oxygenation reactions proceed in high yields without complex disintegration and invariably provide μ1,2-bridging sulfinates as established by spectroscopy (IR and UV/vis), X-ray crystallography, and accompanying density functional theory calculations. The oxygenation of the S atoms has a strong impact on the electronic structures of the nickel complexes. The monosulfinate complex 2 has an S = 2 ground state resulting from moderate ferromagnetic exchange coupling interactions (J = +15.7 cm-1; H = -2JS1S2), while an antiferromagnetic exchange interaction in 3 shows the presence of a ground state with spin S = 0 (J = -0.56 cm-1).
Collapse
Affiliation(s)
- Martin Börner
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany.,Leibniz-Institut für Oberflächenmodifizierung, Abteilung Funktionale Oberflächen, Permoserstrasse 15, D-04318 Leipzig, Germany
| | - Daniel Fuhrmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Jennifer Klose
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Harald Krautscheid
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| |
Collapse
|
3
|
Monsour CG, Decosto CM, Tafolla-Aguirre BJ, Morales LA, Selke M. Singlet Oxygen Generation, Quenching, and Reactivity with Metal Thiolates. Photochem Photobiol 2021; 97:1219-1240. [PMID: 34242405 DOI: 10.1111/php.13487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/08/2021] [Indexed: 11/28/2022]
Abstract
Metal thiolate complexes can act as photosensitizers for the generation of singlet oxygen, quenchers of singlet oxygen, and they may undergo chemical reactions with singlet oxygen leading to oxidized thiolate ligands. This review covers all of the chemical reactions of thiolate ligands with singlet oxygen (through early 2021). Since some of these reactions are self-sensitized photooxidations, singlet oxygen generation by metal complexes is also discussed. Mechanistic features such as the effects of protic vs. aprotic conditions are presented and compared with the comparatively well-understood photooxidation of organic sulfides. In general, the total rate of singlet oxygen removal correlates with the nucleophilicity of the thiolate ligand which in turn can be influenced by the metal. Some interesting patterns of reactivity have been noted as a result of this survey: Metal thiolate complexes bearing arylthiolate ligands appear to exclusively produce sulfinate (metal-bound sulfone) products upon reaction with singlet oxygen. In contrast, metal thiolate complexes bearing alkylthiolate ligands may produce sulfinate and/or sulfenate (metal-bound sulfoxide) products. Several mechanistic pathways have been proposed for these reactions, but the exact nature of any intermediates remains unknown at this time.
Collapse
Affiliation(s)
- Charlotte G Monsour
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| | - Cassandra M Decosto
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| | | | - Luis A Morales
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| | - Matthias Selke
- Department of Chemistry and Biochemistry, California State University, Los Angeles
| |
Collapse
|
4
|
Wu YY, Hong JC, Tsai RF, Pan HR, Huang BH, Chiang YW, Lee GH, Cheng MJ, Hsu HF. Ligand-Based Reactivity of Oxygenation and Alkylation in Cobalt Complexes Binding with (Thiolato)phosphine Derivatives. Inorg Chem 2020; 59:4650-4660. [PMID: 32186861 DOI: 10.1021/acs.inorgchem.9b03740] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In our efforts to understand the nature of metal thiolates, we have explored the chemistry of cobalt ion supported by (thiolato)phosphine ligand derivatives. Herein, we synthesized and characterized a square-planar CoII complex binding with a bidentate (thiolato)phosphine ligand, Co(PS1″)2 (1) ([PS1″]- = [P(Ph)2(C6H3-3-SiMe3-2-S)]-). The complex activates O2 to form a ligand-based oxygenation product, Co(OPS1″)2 (2) ([OPS1″]- = [PO(Ph)2(C6H3-3-SiMe3-2-S)]-). In addition, an octahedral CoIII complex with a tridentate bis(thiolato)phosphine ligand, [NEt4][Co(PS2*)2] (3) ([PS2*]2- = [P(Ph)(C6H3-3-Ph-2-S)2]2-), was obtained. Compound 3 cleaves the C-Cl bond in dichloromethane via an S-based nucleophilic attack to generate a chloromethyl thioether group. Two isomeric products, [Co(PS2*)(PSSCH2Cl*)] (4 and 4') ([PSSCH2Cl*]- = [P(Ph)(C6H3-3-Ph-2-S)(C6H3-3-Ph-2-SCH2Cl)]-), were isolated and fully characterized. Both transformations, oxygenation of a CoII-bound phosphine donor in 1 and alkylation of a CoIII-bound thiolate in 3, were monitored by spectroscopic methods. These reaction products were isolated and fully characterized. Density functional theory (DFT, the B3LYP functional) calculations were performed to understand the electronic structure of 1 as well as the pathway of its transformation to 2.
Collapse
Affiliation(s)
- Yi-Ying Wu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Jia-Cheng Hong
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Ruei-Fong Tsai
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hung-Ruei Pan
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Bo-Hua Huang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Yun-Wei Chiang
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hua-Fen Hsu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| |
Collapse
|
5
|
Fayaz bakhsh N, Soltanian Fard MJ, Hayati P, Masoudiasl A, Janczak J. A facile route for the synthesis of new 1D copper(II) coordination polymer as precursors for preparation of nano structures: Crystallography and Hirshfeld surface analysis. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
6
|
Yan ZH, Ma B, Li SR, Liu J, Chen R, Du MH, Jin S, Zhuang GL, Long LS, Kong XJ, Zheng LS. Encapsulating a Ni(II) molecular catalyst in photoactive metal-organic framework for highly efficient photoreduction of CO 2. Sci Bull (Beijing) 2019; 64:976-985. [PMID: 36659809 DOI: 10.1016/j.scib.2019.05.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/20/2019] [Accepted: 05/16/2019] [Indexed: 01/21/2023]
Abstract
Photocatalytic reduction of CO2 to CO is a promising strategy for reducing atmospheric CO2 levels and storing solar radiation as chemical energy. Here, we demonstrate that a molecular catalyst [NiII(bpet)(H2O)2] successfully encapsulated into a highly robust and visible-light responsive metal-organic framework (Ru-UiO-67) to fabricate composite catalysts for photocatalytic CO2 reduction. The composite Ni@Ru-UiO-67 photocatalysts show efficient visible-light-driven CO2 reduction to CO with a TON of 581 and a selectivity of 99% after 20-h illumination, because of the facile electron transfer from Ru-photosensitizer to Ni(II) active sites in Ni@Ru-UiO-67 system. The mechanistic insights into photoreduction of CO2 have been studied based on thermodynamical, electrochemical, and spectroscopic investigation, together with density functional theory (DFT) calculations. This work shows that encapsulating molecular catalyst into photoactive MOF highlights opportunities for designing efficient, stable and recyclable photocatalysts.
Collapse
Affiliation(s)
- Zhi-Hao Yan
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Bo Ma
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Shu-Rong Li
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Junxue Liu
- State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Rong Chen
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ming-Hao Du
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Shengye Jin
- State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Gui-Lin Zhuang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xiang-Jian Kong
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| |
Collapse
|
7
|
Gao Y, Yip JHK. Selective Hypochlorous Acid Detection by Electronic Tuning of Platinum–4,5-bis(diphenylphosphino)acridine–Thiolate Complexes. Inorg Chem 2019; 58:9290-9302. [DOI: 10.1021/acs.inorgchem.9b01009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yifei Gao
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - John H. K. Yip
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| |
Collapse
|
8
|
Tietze D, Sartorius J, Koley Seth B, Herr K, Heimer P, Imhof D, Mollenhauer D, Buntkowsky G. New insights into the mechanism of nickel superoxide degradation from studies of model peptides. Sci Rep 2017; 7:17194. [PMID: 29222438 PMCID: PMC5722923 DOI: 10.1038/s41598-017-17446-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 11/27/2017] [Indexed: 12/27/2022] Open
Abstract
A series of small, catalytically active metallopeptides, which were derived from the nickel superoxide dismutase (NiSOD) active site were employed to study the mechanism of superoxide degradation especially focusing on the role of the axial imidazole ligand. In the literature, there are contradicting propositions about the catalytic importance of the N-terminal histidine. Therefore, we studied the stability and activity of a set of eight NiSOD model peptides, which represent the major model systems discussed in the literature to date, yet differing in their length and their Ni-coordination. UV-Vis-coupled stopped-flow kinetic measurements and mass spectrometry analysis unveiled their high oxidation sensitivity in the presence of oxygen and superoxide resulting into a much faster Ni(II)-peptide degradation for the amine/amide Ni(II) coordination than for the catalytically inactive bis-amidate Ni(II) coordination. With respect to these results we determined the catalytic activities for all NiSOD mimics studied herein, which turned out to be in almost the same range of about 2 × 106 M-1 s-1. From these experiments, we concluded that the amine/amide Ni(II) coordination is clearly the key factor for catalytic activity. Finally, we were able to clarify the role of the N-terminal histidine and to resolve the contradictory literature propositions, reported in previous studies.
Collapse
Affiliation(s)
- Daniel Tietze
- Eduard-Zintl Institute for Physical and Inorganic Chemistry, Darmstadt University of Technology, Alarich-Weiss-Str. 8, 64287, Darmstadt, Germany.
| | - Jana Sartorius
- Eduard-Zintl Institute for Physical and Inorganic Chemistry, Darmstadt University of Technology, Alarich-Weiss-Str. 8, 64287, Darmstadt, Germany
| | - Banabithi Koley Seth
- Eduard-Zintl Institute for Physical and Inorganic Chemistry, Darmstadt University of Technology, Alarich-Weiss-Str. 8, 64287, Darmstadt, Germany
| | - Kevin Herr
- Eduard-Zintl Institute for Physical and Inorganic Chemistry, Darmstadt University of Technology, Alarich-Weiss-Str. 8, 64287, Darmstadt, Germany
| | - Pascal Heimer
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53119, Bonn, Germany
| | - Diana Imhof
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53119, Bonn, Germany
| | - Doreen Mollenhauer
- Institute of Physical Chemistry, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, D-35392, Giessen, Germany
| | - Gerd Buntkowsky
- Eduard-Zintl Institute for Physical and Inorganic Chemistry, Darmstadt University of Technology, Alarich-Weiss-Str. 8, 64287, Darmstadt, Germany.
| |
Collapse
|
9
|
Uzelac EJ, Rasmussen SC. Thiophene‐Extended Nickel Thiazoledithiolene: π‐Extended Fused‐Ring Metal Dithiolenes with Stabilized Frontier Orbitals. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700702] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eric J. Uzelac
- Department of Chemistry and Biochemistry North Dakota State University NDSU Dept. 2735 P. O. Box 6050 58108‐6050 Fargo ND USA
| | - Seth C. Rasmussen
- Department of Chemistry and Biochemistry North Dakota State University NDSU Dept. 2735 P. O. Box 6050 58108‐6050 Fargo ND USA
| |
Collapse
|
10
|
Lindenmaier NJ, Wahlefeld S, Bill E, Szilvási T, Eberle C, Yao S, Hildebrandt P, Horch M, Zebger I, Driess M. An S-Oxygenated [NiFe] Complex Modelling Sulfenate Intermediates of an O2
-Tolerant Hydrogenase. Angew Chem Int Ed Engl 2017; 56:2208-2211. [DOI: 10.1002/anie.201611069] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Nils J. Lindenmaier
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Stefan Wahlefeld
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Eckhard Bill
- Abteilung Molekulare Theorie und Spektroskopie; Max-Planck-Institut für Chemische Energiekonversion; Mülheim a. d. Ruhr Germany
| | - Tibor Szilvási
- Department of Chemical and Biological Engineering; University of Wisconsin, Madison; USA
| | - Christopher Eberle
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Shenglai Yao
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Peter Hildebrandt
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Marius Horch
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Ingo Zebger
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| | - Matthias Driess
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Strasse des 17. Juni 135 10623 Berlin Germany
| |
Collapse
|
11
|
Lindenmaier NJ, Wahlefeld S, Bill E, Szilvási T, Eberle C, Yao S, Hildebrandt P, Horch M, Zebger I, Driess M. Ein S-oxygenierter [NiFe]-Komplex als Modell für Sulfenat- intermediate einer O 2
-toleranten Hydrogenase. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Nils J. Lindenmaier
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Stefan Wahlefeld
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Eckhard Bill
- Abteilung Molekulare Theorie und Spektroskopie; Max-Planck-Institut für Chemische Energiekonversion; Mülheim a. d. Ruhr Deutschland
| | - Tibor Szilvási
- Department of Chemical and Biological Engineering; University of Wisconsin, Madison; USA
| | - Christopher Eberle
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Shenglai Yao
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Peter Hildebrandt
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Marius Horch
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Ingo Zebger
- Institut für Chemie: Physikalische Chemie/Biophysikalische Chemie, Sekr. PC14; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| | - Matthias Driess
- Institut für Chemie: Metallorganik und Anorganische Materialien, Sekr. C2; Technische Universität Berlin; Straße des 17. Juni 135 10623 Berlin Deutschland
| |
Collapse
|
12
|
Luo GG, Wang YH, Wang JH, Wu JH, Wu RB. A square-planar nickel dithiolate complex as an efficient molecular catalyst for the electro- and photoreduction of protons. Chem Commun (Camb) 2017; 53:7007-7010. [DOI: 10.1039/c7cc01942d] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A square-planar nickel cis-dithiolate complex is shown to be an active catalyst for both electro- and photoreduction of protons.
Collapse
Affiliation(s)
- Geng-Geng Luo
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Yong-Heng Wang
- School of Pharmaceutical Sciences
- East Campus
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Jiang-Hai Wang
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Ji-Huai Wu
- College of Materials Science and Engineering
- Huaqiao University
- Xiamen 361021
- P. R. China
| | - Rui-Bo Wu
- School of Pharmaceutical Sciences
- East Campus
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| |
Collapse
|
13
|
Ferrara SJ, Wang B, Donahue JP. An S4-symmetric mixed-valent decacopper cage comprised of [CuII(L-S2N2)] complexes bridged by CuI(MeCN)n (n = 1 or 2) cations. Dalton Trans 2016; 45:2997-3002. [DOI: 10.1039/c5dt04359j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oxidative addition of 1,2,11,12-tetrathia-5,8,15,19-tetra(N-methylamino)cycloicosane to [Cu(MeCN)4][BF4] yields an S4-symmetric decacopper cage compound with four cupric ions in distorted square planar bis(amino) bis(thiolato) ligand environments bridged by six cuprous ions with MeCN ligands.
Collapse
Affiliation(s)
| | - Bo Wang
- Department of Chemistry
- Tulane University
- New Orleans
- USA
| | | |
Collapse
|
14
|
Denny JA, Darensbourg MY. Metallodithiolates as ligands in coordination, bioinorganic, and organometallic chemistry. Chem Rev 2015; 115:5248-73. [PMID: 25948147 DOI: 10.1021/cr500659u] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
15
|
|
16
|
Das U, Ghorui T, Adhikari B, Roy S, Pramanik S, Pramanik K. Iridium-mediated C–S bond activation and transformation: organoiridium(iii) thioether, thiolato, sulfinato and thiyl radical compounds. Synthesis, mechanistic, spectral, electrochemical and theoretical aspects. Dalton Trans 2015; 44:8625-39. [DOI: 10.1039/c5dt00448a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The iridium-mediated C–S bond scission by an uncommon SET reductive process: exploration of S-centered reactivity of iridium(iii) thiolato complex.
Collapse
Affiliation(s)
- Ujjwal Das
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Basab Adhikari
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| |
Collapse
|
17
|
Nguyen VH, Chew HQ, Su B, Yip JHK. Synthesis and Spectroscopy of Anionic Cyclometalated Iridium(III)-Dithiolate and -Sulfinates—Effect of Sulfur Dioxygenation on Electronic Structure and Luminescence. Inorg Chem 2014; 53:9739-50. [DOI: 10.1021/ic501278n] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Van Ha Nguyen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Hui Qi Chew
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Bochao Su
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - John H. K. Yip
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| |
Collapse
|
18
|
Shearer J. Insight into the structure and mechanism of nickel-containing superoxide dismutase derived from peptide-based mimics. Acc Chem Res 2014; 47:2332-41. [PMID: 24825124 DOI: 10.1021/ar500060s] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nickel superoxide dismutase (NiSOD) is a nickel-containing metalloenzyme that catalyzes the disproportionation of superoxide through a ping-pong mechanism that relies on accessing reduced Ni(II) and oxidized Ni(III) oxidation states. NiSOD is the most recently discovered SOD. Unlike the other known SODs (MnSOD, FeSOD, and (CuZn)SOD), which utilize "typical" biological nitrogen and oxygen donors, NiSOD utilizes a rather unexpected ligand set. In the reduced Ni(II) oxidation state, NiSOD utilizes nitrogen ligands derived from the N-terminal amine and an amidate along with two cysteinates sulfur donors. These are unusual biological ligands, especially for an SOD: amine and amidate donors are underrepresented as biological ligands, whereas cysteinates are highly susceptible to oxidative damage. An axial histidine imidazole binds to nickel upon oxidation to Ni(III). This bond is long (2.3-2.6 Å) owing to a tight hydrogen-bonding network. All of the ligating residues to Ni(II) and Ni(III) are found within the first 6 residues from the NiSOD N-terminus. Thus, small nickel-containing metallopeptides derived from the first 6-12 residues of the NiSOD sequence can reproduce many of the properties of NiSOD itself. Using these nickel-containing metallopeptide-based NiSOD mimics, we have shown that the minimal sequence needed for nickel binding and reproduction of the structural, spectroscopic, and functional properties of NiSOD is H2N-HCXXPC. Insight into how NiSOD avoids oxidative damage has also been gained. Using small NiN2S2 complexes and metallopeptide-based mimics, it was shown that the unusual nitrogen donor atoms protect the cysteinates from oxidative damage (both one-electron oxidation and oxygen atom insertion reactions) by fine-tuning the electronic structure of the nickel center. Changing the nitrogen donor set to a bis-amidate or bis-amine nitrogen donor led to catalytically nonviable species owing to nickel-cysteinate bond oxidative damage. Only the amine/amidate nitrogen donor atoms within the NiSOD ligand set produce a catalytically viable species. These metallopeptide-based mimics have also hinted at the detailed mechanism of SOD catalysis by NiSOD. One such aspect is that the axial imidazole likely remains ligated to the Ni center under rapid catalytic conditions (i.e., high superoxide loads). This reduces the degree of structural rearrangement about the nickel center, leading to higher catalytic rates. Metallopeptide-based mimics have also shown that, although an axial ligand to Ni(III) is required for catalysis, the rates are highest when this is a weak interaction, suggesting a reason for the long axial His-Ni(III) bond found in NiSOD. These mimics have also suggested a surprising mechanistic insight: O2(-) reduction via a "H(•)" tunneling event from a R-S(H(+))-Ni(II) moiety to O2(-) is possible. The importance of this mechanism in NiSOD has not been verified.
Collapse
Affiliation(s)
- Jason Shearer
- Department
of Chemistry, University of Nevada, Reno, Reno, Nevada 89557, United States
| |
Collapse
|
19
|
Kure B, Sano M, Nakajima T, Tanase T. Systematic Heterodinuclear Complexes with MM′(μ-meppp) Centers That Tune the Properties of a Nesting Hydride (M = Ni, Pd, Pt; M′ = Rh, Ir; H2meppp = meso-1,3-Bis[(mercaptoethyl)phenylphosphino]propane). Organometallics 2014. [DOI: 10.1021/om500410f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Bunsho Kure
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Mikie Sano
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Takayuki Nakajima
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Tomoaki Tanase
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| |
Collapse
|
20
|
Nakane D, Wasada-Tsutsui Y, Funahashi Y, Hatanaka T, Ozawa T, Masuda H. A Novel Square-Planar Ni(II) Complex with an Amino—Carboxamido—Dithiolato-Type Ligand as an Active-Site Model of NiSOD. Inorg Chem 2014; 53:6512-23. [DOI: 10.1021/ic402574d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Daisuke Nakane
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan
| | - Yuko Wasada-Tsutsui
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan
| | - Yasuhiro Funahashi
- Department
of Chemistry, Graduate School of Science, Osaka University, 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Tsubasa Hatanaka
- Department
of Chemistry, Graduate School of Science, Osaka University, 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Tomohiro Ozawa
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan
| | - Hideki Masuda
- Department
of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan
| |
Collapse
|
21
|
Chiang C, Chu Y, Chen H, Kuo T, Lee W. Synthesis and Characterization of Ni
III
N3S2 Complexes as Active Site Models for the Oxidized Form of Nickel Superoxide Dismutase. Chemistry 2014; 20:6283-6. [PMID: 24737622 DOI: 10.1002/chem.201304543] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 03/19/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Chien‐Wei Chiang
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Ting‐Chow Rd., 11677 Taipei (Taiwan)
| | - Yun‐Li Chu
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Ting‐Chow Rd., 11677 Taipei (Taiwan)
| | - Hong‐Ling Chen
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Ting‐Chow Rd., 11677 Taipei (Taiwan)
| | - Ting‐Shen Kuo
- Instrumentation Center, Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting‐Chow Rd., Taipei 11677, Taiwan (R.O.C.)
| | - Way‐Zen Lee
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Ting‐Chow Rd., 11677 Taipei (Taiwan)
| |
Collapse
|
22
|
Chambers GM, Angamuthu R, Gray DL, Rauchfuss TB. Organo Ruthenium–Nickel Dithiolates with Redox-Responsive Nickel Sites. Organometallics 2013. [DOI: 10.1021/om4006824] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Geoffrey M. Chambers
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| | - Raja Angamuthu
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| | - Danielle L. Gray
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| | - Thomas B. Rauchfuss
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
| |
Collapse
|
23
|
Krause ME, Glass AM, Jackson TA, Laurence JS. Embedding the Ni-SOD mimetic Ni-NCC within a polypeptide sequence alters the specificity of the reaction pathway. Inorg Chem 2012; 52:77-83. [PMID: 23214928 DOI: 10.1021/ic301175f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The unique metal abstracting peptide asparagine-cysteine-cysteine (NCC) binds nickel in a square planar 2N:2S geometry and acts as a mimic of the enzyme nickel superoxide dismutase (Ni-SOD). The Ni-NCC tripeptide complex undergoes rapid, site-specific chiral inversion to dld-NCC in the presence of oxygen. Superoxide scavenging activity increases proportionally with the degree of chiral inversion. Characterization of the NCC sequence within longer peptides with absorption, circular dichroism (CD), and magnetic CD (MCD) spectroscopies and mass spectrometry (MS) shows that the geometry of metal coordination is maintained, though the electronic properties of the complex are varied to a small extent because of bis-amide, rather than amine/amide, coordination. In addition, both Ni-tripeptide and Ni-pentapeptide complexes have charges of -2. This study demonstrates that the chiral inversion chemistry does not occur when NCC is embedded in a longer polypeptide sequence. Nonetheless, the superoxide scavenging reactivity of the embedded Ni-NCC module is similar to that of the chirally inverted tripeptide complex, which is consistent with a minor change in the reduction potential for the Ni-pentapeptide complex. Together, this suggests that the charge of the complex could affect the SOD activity as much as a change in the primary coordination sphere. In Ni-NCC and other Ni-SOD mimics, changes in chirality, superoxide scavenging activity, and oxidation of the peptide itself all depend on the presence of dioxygen or its reduced derivatives (e.g., superoxide), and the extent to which each of these distinct reactions occurs is ruled by electronic and steric effects that emenate from the organization of ligands around the metal center.
Collapse
Affiliation(s)
- Mary E Krause
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, Kansas 66047, United States
| | | | | | | |
Collapse
|
24
|
Kure B, Taniguchi A, Nakajima T, Tanase T. Hydride-Bridged NiRh Complexes with Tunable N3S2 Dithiolato Ligands and Their Utilization as Catalysts for Hydrogenation of Aldehydes and CO2 in Aqueous Media. Organometallics 2012. [DOI: 10.1021/om300350u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bunsho Kure
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi,
Nara, 630-8506, Japan
| | - Ayami Taniguchi
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi,
Nara, 630-8506, Japan
| | - Takayuki Nakajima
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi,
Nara, 630-8506, Japan
| | - Tomoaki Tanase
- Department of Chemistry,
Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi,
Nara, 630-8506, Japan
| |
Collapse
|
25
|
Hosler ER, Herbst RW, Maroney MJ, Chohan BS. Exhaustive oxidation of a nickel dithiolate complex: some mechanistic insights en route to sulfate formation. Dalton Trans 2012; 41:804-16. [DOI: 10.1039/c1dt11032b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
26
|
Herdt DR, Grapperhaus CA. Kinetic study of nickel-thiolate oxygenation by hydrogen peroxide. Implications for nickel-containing superoxide dismutase. Dalton Trans 2012; 41:364-6. [DOI: 10.1039/c1dt11300c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
27
|
Gennari M, Retegan M, DeBeer S, Pécaut J, Neese F, Collomb MN, Duboc C. Experimental and Computational Investigation of Thiolate Alkylation in NiII and ZnII Complexes: Role of the Metal on the Sulfur Nucleophilicity. Inorg Chem 2011; 50:10047-55. [DOI: 10.1021/ic200899w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Marcello Gennari
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR, CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| | - Marius Retegan
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR, CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| | - Serena DeBeer
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Jacques Pécaut
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique, UMR E-3 CEA/UJF, CNRS, CEA-Grenoble, INAC, 17 Rue des Martyrs 38054 Grenoble Cedex 9, France
| | - Frank Neese
- Institute for Physical and Theoretical Chemistry, Universität Bonn, Wegelerstrasse 12, D-53113 Bonn, Germany
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Marie-Noëlle Collomb
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR, CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| | - Carole Duboc
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR, CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| |
Collapse
|
28
|
Ouch K, Mashuta MS, Grapperhaus CA. Metal-Stabilized Thiyl Radicals as Scaffolds for Reversible Alkene Addition via C–S Bond Formation/Cleavage. Inorg Chem 2011; 50:9904-14. [DOI: 10.1021/ic200416y] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kagna Ouch
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Mark S. Mashuta
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Craig A. Grapperhaus
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| |
Collapse
|
29
|
Gennari M, Orio M, Pécaut J, Bothe E, Neese F, Collomb MN, Duboc C. Influence of Mixed Thiolate/Thioether versus Dithiolate Coordination on the Accessibility of the Uncommon +I and +III Oxidation States for the Nickel Ion: An Experimental and Computational Study. Inorg Chem 2011; 50:3707-16. [DOI: 10.1021/ic200063d] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marcello Gennari
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR-CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| | - Maylis Orio
- Institute for Physical and Theoretical Chemistry Universität Bonn, Wegelerstrasse 12, D-53113 Bonn, Germany
| | - Jacques Pécaut
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique, (UMR E-3 CEA/UJF, FRE3200 CNRS), CEA-Grenoble, INAC, 17 rue des Martyrs 38054, Grenoble cedex 9, France
| | - Eberhard Bothe
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstr. 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Frank Neese
- Institute for Physical and Theoretical Chemistry Universität Bonn, Wegelerstrasse 12, D-53113 Bonn, Germany
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstr. 34-36, D-45470 Mülheim an der Ruhr, Germany
| | - Marie-Noëlle Collomb
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR-CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| | - Carole Duboc
- Université Joseph Fourier Grenoble 1/CNRS, Département de Chimie Moléculaire, UMR-5250, Laboratoire de Chimie Inorganique Redox, Institut de Chimie Moléculaire de Grenoble FR-CNRS-2607, BP-53, 38041 Grenoble Cedex 9, France
| |
Collapse
|
30
|
García-Gallego S, Serramía MJ, Arnaiz E, Díaz L, Muñoz-Fernández MA, Gómez-Sal P, Ottaviani MF, Gómez R, de la Mata FJ. Transition-Metal Complexes Based on a Sulfonate-Containing N-Donor Ligand and Their Use as HIV Antiviral Agents. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001121] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
31
|
Masitas CA, Kumar M, Mashuta MS, Kozlowski PM, Grapperhaus CA. Controlled sulfur oxygenation of the ruthenium dithiolate (4,7-bis-(2'-methyl-2'-mercaptopropyl)-1-thia-4,7-diazacyclononane)RuPPh(3) under limiting O(2) conditions yields thiolato/sulfinato, sulfenato/sulfinato, and bis-sulfinato derivatives. Inorg Chem 2010; 49:10875-81. [PMID: 20973591 DOI: 10.1021/ic101221z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ruthenium(II) dithiolate complex (bmmp-TASN)RuPPh(3) (1) reacts with O(2) under limiting conditions to yield isolable sulfur oxygenated derivatives as a function of reaction time. With this approach, a family of sulfur-oxygenates has been prepared and isolated without the need for O-atom transfer agents or column chromatography. Addition of 5 equiv of O(2) to 1 yields the thiolato/sulfinato complex (bmmp-O(2)-TASN)RuPPh(3) (2) in 70% yield within 5 min. Increasing the reaction time to 12 h yields the sulfenato/sulfinato derivative (bmmp-O(3)-TASN)RuPPh(3) (3) in 82% yield. Longer reaction times and/or additional O(2) exposure yield the bis-sulfinato complex (bmmp-O(4)-TASN)RuPPh(3) (4). All products remain in the Ru(II) oxidation state under the conditions employed. Stoichiometric hydrolysis of acetonitrile to acetamide by 2 and 3 is observed in mixed acetonitrile, methanol, PIPES buffer (pH = 7.0) mixtures. The Ru(III)/(II) reduction potential of -0.85 V (versus ferrocenium/ferrocene) for 1 shifts to -0.39 and -0.26 V for 2 and 3, respectively, because of the decreased donor ability of sulfur upon oxygenation. X-ray diffraction studies reveal a decrease in Ru-S bond distances upon oxygenation by 0.045(1) and 0.158(1) Å for the sulfenato and sulfinato donors, respectively. Conversely, sulfur-oxygenation increases the Ru-P bond distance by 0.061(1) Å from 1 to 2 and an additional 0.027(1) Å from 2 to 3. Density functional theory investigations using the BP86 and B3LYP functionals with a LANL2DZ basis set for Ru and the 6-31G(d) basis set for all other atoms reveal a direct correlation between the oxygenation level and the Ru-P distance with an increase of 0.031 Å per O-atom.
Collapse
Affiliation(s)
- César A Masitas
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | | | | | | | | |
Collapse
|
32
|
Gale EM, Patra AK, Harrop TC. Versatile methodology toward NiN(2)S(2) complexes as nickel superoxide dismutase models: structure and proton affinity. Inorg Chem 2010; 48:5620-2. [PMID: 20507097 DOI: 10.1021/ic9009042] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Structural features of the reduced form of the nickel superoxide dismutase (Ni-SOD) active site have been modeled with asymmetric NiN(2)S(2) complexes (Et(4)N)[Ni(nmp)(SR)] (R = C(6)H(4)-p-Cl (2) and (S(t)Bu) (3)) obtained via S,S-bridge splitting of the dimeric metallosynthon, [Ni(2)(nmp)(2)] (1). Complexes 2 and 3 are irreversibly oxidized at potentials within the window needed for SOD activity, 236 and 75 mV versus Ag/AgCl, respectively. The exogenous thiolato-S in 2 and 3 serves as a proton acceptor, suggesting potential involvement of Cys6 in Ni-SOD for H(+) storage between SOD half reactions.
Collapse
Affiliation(s)
- Eric M Gale
- Department of Chemistry, University of Georgia, 1001 Cedar St, Athens, Georgia 30602, USA
| | | | | |
Collapse
|
33
|
Gale EM, Narendrapurapu BS, Simmonett AC, Schaefer HF, Harrop TC. Exploring the Effects of H-Bonding in Synthetic Analogues of Nickel Superoxide Dismutase (Ni-SOD): Experimental and Theoretical Implications for Protection of the Ni−SCys Bond. Inorg Chem 2010; 49:7080-96. [DOI: 10.1021/ic1009187] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Eric M. Gale
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, 1001 Cedar Street, Athens, Georgia 30602
| | - Beulah S. Narendrapurapu
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, 1001 Cedar Street, Athens, Georgia 30602
| | - Andrew C. Simmonett
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, 1001 Cedar Street, Athens, Georgia 30602
| | - Henry F. Schaefer
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, 1001 Cedar Street, Athens, Georgia 30602
| | - Todd C. Harrop
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, 1001 Cedar Street, Athens, Georgia 30602
| |
Collapse
|
34
|
Mathrubootham V, Thomas J, Staples R, McCraken J, Shearer J, Hegg EL. Bisamidate and mixed amine/amidate NiN2S2 complexes as models for nickel-containing acetyl coenzyme A synthase and superoxide dismutase: an experimental and computational study. Inorg Chem 2010; 49:5393-406. [PMID: 20507077 PMCID: PMC2898278 DOI: 10.1021/ic9023053] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The distal nickel site of acetyl-CoA synthase (Ni(d)-ACS) and reduced nickel superoxide dismutase (Ni-SOD) display similar square-planar Ni(II)N(2)S(2) coordination environments. One difference between these two sites, however, is that the nickel ion in Ni-SOD contains a mixed amine/amidate coordination motif while the Ni(d) site in Ni-ACS contains a bisamidate coordination motif. To provide insight into the consequences of the different coordination environments on the properties of the Ni ions, we systematically examined two square-planar Ni(II)N(2)S(2) complexes, one with bisthiolate-bisamidate ligation (Et(4)N)(2)(Ni(L1)).2H(2)O (2) [H(4)L1 = N-(2-mercaptoacetyl)-N'-(2-mercaptoethyl)glycinamide] and another with bisthiolate-amine/amidate ligation K(Ni(HL2)) (3) [H(4)L2 = N-(2''-mercaptoethyl)-2-((2'-mercaptoethyl)amino)acetamide]. Although these two complexes differ only by a single amine versus amidate ligand, their chemical properties are quite different. The stronger in-plane ligand field in the bisamidate complex (Ni(II)(L1))(2-) (2) results in an increase in the energies of the d --> d transitions and a considerably more negative oxidation potential. Furthermore, while the bisamidate complex (Ni(II)(L1))(2-) (2) readily forms a trinuclear species (Et(4)N)(2)({Ni(L1)}(2)Ni).H(2)O (1) and reacts rapidly with O(2), presumably via sulfoxidation, the mixed amine/amidate complex (Ni(II)(HL2))(-) (3) remains monomeric and is stable for days in air. Interestingly, the Ni(III) species of the bisamidate complex formed by chemical oxidation with I(2) can be detected by electron paramagnetic resonance (EPR) spectroscopy while the mixed amine/amidate complex immediately decomposes upon oxidation. To explain these experimentally observed properties, we performed S K-edge X-ray absorption spectroscopy and low-temperature (77 K) electronic absorption measurements as well as both hybrid density functional theory (hybrid-DFT) and spectroscopy oriented configuration interaction (SORCI) calculations. These studies demonstrate that the highest occupied molecular orbital (HOMO) of the bisamidate complex (Ni(II)(L1))(2-) (2) has more Ni character and is significantly destabilized relative to the mixed amine/amidate complex (Ni(II)(HL2))(-) (3) by approximately 6.2 kcal mol(-1). The consequence of this destabilization is manifested in the nucleophilic activation of the doubly filled HOMO, which makes (Ni(II)(L1))(2-) (2) significantly more reactive toward electrophiles such as O(2).
Collapse
Affiliation(s)
| | - Jason Thomas
- Department of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI 48824
| | - Richard Staples
- Department of Chemistry, Michigan State University, East Lansing, MI 48824
| | - John McCraken
- Department of Chemistry, Michigan State University, East Lansing, MI 48824
| | - Jason Shearer
- Department of Chemistry, University of Nevada, Reno, NV 89557
| | - Eric L. Hegg
- Department of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI 48824
| |
Collapse
|
35
|
Johnson OE, Ryan KC, Maroney MJ, Brunold TC. Spectroscopic and computational investigation of three Cys-to-Ser mutants of nickel superoxide dismutase: insight into the roles played by the Cys2 and Cys6 active-site residues. J Biol Inorg Chem 2010; 15:777-93. [PMID: 20333422 PMCID: PMC2997571 DOI: 10.1007/s00775-010-0641-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Accepted: 02/24/2010] [Indexed: 10/19/2022]
Abstract
Nickel-dependent superoxide dismutase (NiSOD) is a member of a class of metalloenzymes that protect aerobic organisms from the damaging superoxide radical (O(2) (.-)). A distinctive and fascinating feature of NiSOD is the presence of active-site nickel-thiolate interactions involving the Cys2 and Cys6 residues. Mutation of one or both Cys residues to Ser prevents catalysis of O(2) (.-), demonstrating that both residues are necessary to support proper enzymatic activity (Ryan et al., J Biol Inorg Chem, 2010). In this study, we have employed a combined spectroscopic and computational approach to characterize three Cys-to-Ser (Cys --> Ser) mutants (C2S, C6S, and C2S/C6S NiSOD). Similar electronic absorption and magnetic circular dichroism spectra are observed for these mutants, indicating that they possess nearly identical active-site geometric and electronic structures. These spectroscopic data also reveal that the Ni(2+) ion in each mutant adopts a high-spin (S = 1) configuration, characteristic of a five- or six-coordinate ligand environment, as opposed to the low-spin (S = 0) configuration observed for the four-coordinate Ni(2+) center in the native enzyme. An analysis of the electronic absorption and magnetic circular dichroism data within the framework of density functional theory computations performed on a series of five- and six-coordinate C2S/C6S NiSOD models reveals that the active site of each Cys --> Ser mutant possesses an essentially six-coordinate Ni(2+) center with a rather weak axial bonding interaction. Factors contributing to the lack of catalytic activity displayed by the Cys --> Ser NiSOD mutants are explored.
Collapse
Affiliation(s)
- Olivia E. Johnson
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Kelly C. Ryan
- Department of Chemistry, University of Massachusetts at Amherst, 104 Lederle Graduate Research Tower A, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Michael J. Maroney
- Department of Chemistry, University of Massachusetts at Amherst, 104 Lederle Graduate Research Tower A, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Thomas C. Brunold
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| |
Collapse
|
36
|
Masitas CA, Mashuta MS, Grapperhaus CA. Asymmetric Oxygenation of a Ruthenium Dithiolate Mimics the Mixed Sulfenato/Sulfinato Donor Sets of Nitrile Hydratase and Thiocyanate Hydrolase. Inorg Chem 2010; 49:5344-6. [DOI: 10.1021/ic100414c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- César A. Masitas
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Mark S. Mashuta
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | | |
Collapse
|
37
|
Nakane D, Funahashi Y, Ozawa T, Masuda H. A Square-planar Ni(II) Complex with an Asymmetric N2S2Donor Set as a Model for the Active Site of Nickel-containing SOD: Structural Conversion Driven by Addition of a Strong Donor Ligand in the High Oxidation State. CHEM LETT 2010. [DOI: 10.1246/cl.2010.344] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
38
|
Nakane D, Kuwasako SI, Tsuge M, Kubo M, Funahashi Y, Ozawa T, Ogura T, Masuda H. A square-planar Ni(ii) complex with an N2S2 donor set similar to the active centre of nickel-containing superoxide dismutase and its reaction with superoxide. Chem Commun (Camb) 2010; 46:2142-4. [DOI: 10.1039/b925755a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
39
|
Mullins CS, Grapperhaus CA, Frye BC, Wood LH, Hay AJ, Buchanan RM, Mashuta MS. Synthesis and Sulfur Oxygenation of a (N3S)Ni Complex Related to Nickel-Containing Superoxide Dismutase. Inorg Chem 2009; 48:9974-6. [DOI: 10.1021/ic901246w] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | - Brian C. Frye
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Larry H. Wood
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Amy J. Hay
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Robert M. Buchanan
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Mark S. Mashuta
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| |
Collapse
|
40
|
Sriskandakumar T, Petzold H, Bruijnincx PCA, Habtemariam A, Sadler PJ, Kennepohl P. Influence of Oxygenation on the Reactivity of Ruthenium−Thiolato Bonds in Arene Anticancer Complexes: Insights from XAS and DFT. J Am Chem Soc 2009; 131:13355-61. [DOI: 10.1021/ja903405z] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thamayanthy Sriskandakumar
- The University of British Columbia, Department of Chemistry, Vancouver BC V6T 1Z1, Canada, University of Warwick, Department of Chemistry, Coventry CV4 7AL, United Kingdom, and University of Edinburgh, School of Chemistry, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Holm Petzold
- The University of British Columbia, Department of Chemistry, Vancouver BC V6T 1Z1, Canada, University of Warwick, Department of Chemistry, Coventry CV4 7AL, United Kingdom, and University of Edinburgh, School of Chemistry, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Pieter C. A. Bruijnincx
- The University of British Columbia, Department of Chemistry, Vancouver BC V6T 1Z1, Canada, University of Warwick, Department of Chemistry, Coventry CV4 7AL, United Kingdom, and University of Edinburgh, School of Chemistry, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Abraha Habtemariam
- The University of British Columbia, Department of Chemistry, Vancouver BC V6T 1Z1, Canada, University of Warwick, Department of Chemistry, Coventry CV4 7AL, United Kingdom, and University of Edinburgh, School of Chemistry, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Peter J. Sadler
- The University of British Columbia, Department of Chemistry, Vancouver BC V6T 1Z1, Canada, University of Warwick, Department of Chemistry, Coventry CV4 7AL, United Kingdom, and University of Edinburgh, School of Chemistry, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Pierre Kennepohl
- The University of British Columbia, Department of Chemistry, Vancouver BC V6T 1Z1, Canada, University of Warwick, Department of Chemistry, Coventry CV4 7AL, United Kingdom, and University of Edinburgh, School of Chemistry, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| |
Collapse
|
41
|
Jenkins RM, Singleton ML, Almaraz E, Reibenspies JH, Darensbourg MY. Imidazole-containing (N3S)-Ni(II) complexes relating to nickel containing biomolecules. Inorg Chem 2009; 48:7280-93. [PMID: 19572492 PMCID: PMC2908898 DOI: 10.1021/ic900778k] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dimeric (N(2)S)Ni complexes and the monomeric N(2)S(2) bismercaptodiazacycloheptane nickel complex, (bme-dach)Ni, serve as precursors to two N(2)-, N'-/ S- complexes where N(2) = diazacycloheptane, N' = imidazole and S = thiolate. As rare examples of nickel complexes containing a mixed thiolate/imidazole ligand set, these complexes are characterized by X-ray diffraction, UV/vis, and variable temperature (1)H NMR spectroscopies, and electrochemistry. Density functional theory computations relate the orientation of the imidazole with respect to the N(2)N'SNi square plane to the VT NMR observed fluxionality and activation parameters. The superoxide dismutase activity of the imidazole complexes was investigated by the nitroblue tetrazolium assay.
Collapse
Affiliation(s)
- Roxanne M. Jenkins
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
| | | | - Elky Almaraz
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
| | | | | |
Collapse
|
42
|
O'Toole MG, Kreso M, Kozlowski PM, Mashuta MS, Grapperhaus CA. Spin-state-dependent oxygen sensitivity of iron dithiolates: sulfur oxygenation or disulfide formation. J Biol Inorg Chem 2008; 13:1219-30. [PMID: 18633652 DOI: 10.1007/s00775-008-0405-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Accepted: 06/25/2008] [Indexed: 10/21/2022]
Abstract
The oxygen sensitivity of two related iron(III) dithiolate complexes of the ligand [4,7-bis-(2'-methyl-2'-mercatopropyl)-1-thia-4,7-diazacyclononane], (bmmp-TASN)FeCN (1) and (bmmp-TASN)FeCl (2), has been examined. Oxygen exposure of the low-spin complex 1 yields the disulfonate complex (bmmp-O6-TASN)FeCN (3) as an olive-green solid with characteristic peaks in the IR spectrum at 1262, 1221, 1111, 1021, 947, 800, and 477 cm(-1). The corresponding nickel dithiolate, (bmmp-TASN)Ni (4), yields the related disulfonato derivative, (bmmp-O6-TASN)Ni (5) upon addition of H2O2 (IR bands at 1258, 1143, 1106, 1012, 800, and 694 cm(-1). Oxygen exposure of the high-spin complex 2 results in disulfide formation and decomplexation of the metal with subsequent iron-oxo cluster formation. Complexes 1 and 2 were examined using density functional theory calculations. A natural bond order/natural localized molecular orbital covalency analysis reveals that the low-spin complex 1 contains Fe-Sthiolate bonds with calculated covalencies of 75 and 86%, while the high-spin complex 2 contains Fe-Sthiolate bonds with calculated covalencies of 11 and 40%. The results indicate the degree of covalency of the Fe-S bonds plays a major role in determining the reaction pathway associated with oxygen exposure of iron thiolates. The X-ray structures of 1, 4, and 5 are reported.
Collapse
Affiliation(s)
- Martin G O'Toole
- Department of Chemistry, University of Louisville, Louisville, KY 40292, USA
| | | | | | | | | |
Collapse
|
43
|
Almaraz E, de Paula QA, Liu Q, Reibenspies JH, Darensbourg MY, Farrell NP. Thiolate Bridging and Metal Exchange in Adducts of a Zinc Finger Model and PtII Complexes: Biomimetic Studies of Protein/Pt/DNA Interactions. J Am Chem Soc 2008; 130:6272-80. [DOI: 10.1021/ja711254q] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elky Almaraz
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Queite A. de Paula
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Qin Liu
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Joseph H. Reibenspies
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Marcetta Y. Darensbourg
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| | - Nicholas P. Farrell
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, and Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia, 23284-2006
| |
Collapse
|
44
|
Shearer J, Dehestani A, Abanda F. Probing Variable Amine/Amide Ligation in NiIIN2S2 Complexes Using Sulfur K-Edge and Nickel L-Edge X-ray Absorption Spectroscopies: Implications for the Active Site of Nickel Superoxide Dismutase. Inorg Chem 2008; 47:2649-60. [DOI: 10.1021/ic7019878] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jason Shearer
- Department of Chemistry, University of Nevada, Reno, Nevada 89557
| | - Ahmad Dehestani
- Department of Chemistry, University of Nevada, Reno, Nevada 89557
| | - Franklin Abanda
- Department of Chemistry, University of Nevada, Reno, Nevada 89557
| |
Collapse
|
45
|
Sarkar B, Liaw BJ, Fang CS, Liu CW. Phosphonate- and Ester-Substituted 2-Cyanoethylene-1,1-Dithiolate Clusters of Zinc: Aerial CO2 Fixation and Unusual Binding Patterns. Inorg Chem 2008; 47:2777-85. [DOI: 10.1021/ic702126k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bijay Sarkar
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
| | - Ben-Jie Liaw
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
| | - Ching-Shiang Fang
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
| | - C. W. Liu
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
| |
Collapse
|
46
|
Ishii A, Ohishi M, Nakata N. Preparation of 3,3-Di-tert-butylthiiranetrans-1,2-Dioxide and Its Reaction with a Platinum(0) Complex To Give a (Disulfenato)platinum(II) Complex: Regioselectivity of the Oxidation of a Related (Sulfenato–thiolato)platinum(II) Complex. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700824] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
47
|
Lee Y, Lee DH, Sarjeant AAN, Karlin KD. Thiol-copper(I) and disulfide–dicopper(I) complex O2-reactivity leading to sulfonate–copper(II) complex or the formation of a cross-linked thioether–phenol product with phenol addition. J Inorg Biochem 2007; 101:1845-58. [PMID: 17651805 DOI: 10.1016/j.jinorgbio.2007.06.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 05/14/2007] [Accepted: 06/16/2007] [Indexed: 11/15/2022]
Abstract
In order to better understand copper mediated oxidative chemistry via ligand-Cu(I)/O(2) reactivity employing S-donor ligands for copper, O(2)-reactivity studies of the copper(I) complexes (1 and 2, Chart 2) have been carried out with a tridentate N(2)S thiol ligand (1-(N-methyl-N-(2-(pyridin-2-yl)ethyl)amino)propane-2-thiol; L(SH)) or its oxidized disulfide form (L(SS)). Reactions of [L(SH)Cu(I)](+) (1) and [L(SS)(Cu(I))(2)(X)(2)](2+) (2) with O(2) give approximately 90% and approximately 70% yields of [L(SO3)Cu(II)(MeOH)(2)](+) (3), respectively, where L(SO3) is S-oxygenated sulfonate; 3 was characterized by electrospray ionization (ESI) mass spectrometry and X-ray crystallography. Mimicking TyrCys galactose oxidase cofactor biogenesis, a new C-S bond is formed (within new thioether moiety L(SPhOH)) from cuprous complex (both 1 and 2) dioxygen reactivity in the presence of 2,4-tBu(2)-phenolate. In addition, the disulfide ligand (L(SS)) reacts with 2equiv. cupric ion salts and the phenolate to efficiently give the cross-linked product L(SPhOH) in high yield (>90%) under anaerobic conditions. Separately, complex [L(SPhO)Cu(II)(ClO(4))] (4), possessing the cross-linked L(SPhOH), was characterized by ESI mass spectrometry and X-ray crystallography.
Collapse
Affiliation(s)
- Yunho Lee
- Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
| | | | | | | |
Collapse
|
48
|
Grapperhaus CA, Kozlowski PM, Kumar D, Frye HN, Venna KB, Poturovic S. Singlet Diradical Character of an Oxidized Ruthenium Trithiolate: Electronic Structure and Reactivity. Angew Chem Int Ed Engl 2007; 46:4085-8. [PMID: 17450515 DOI: 10.1002/anie.200700297] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Craig A Grapperhaus
- Department of Chemistry, University of Louisville, Louisville, KY 40292, USA.
| | | | | | | | | | | |
Collapse
|
49
|
Grapperhaus C, Kozlowski P, Kumar D, Frye H, Venna K, Poturovic S. Singlet Diradical Character of an Oxidized Ruthenium Trithiolate: Electronic Structure and Reactivity. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700297] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
50
|
Ishii A, Kashiura S, Hayashi Y, Weigand W. Rearrangement of a (Dithiolato)platinum(II) Complex Formed by Reaction of Cyclic Disulfide 7,8-Dithiabicyclo[4.2.1]nona-2,4-diene with a Platinum(0) Complex: Oxidation of the Rearranged (Dithiolato)platinum(II) Complex. Chemistry 2007; 13:4326-33. [PMID: 17323393 DOI: 10.1002/chem.200601681] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Reaction of the title bicyclic disulfide 16 with [(Ph3P)2Pt(eta2-C2H4)] (2) yielded the corresponding (dithiolato)platinum(II) complex 17 by oxidative addition. The initial product 17 isomerized at room temperature in a [1,5]-sulfur rearrangement to give another (dithiolato)platinum(II) complex 18 in high isolated yield. Oxidation reactions of 18 with dimethyldioxirane (DMD) provided (sulfenato-thiolato)platinum(II) 23, (sulfinato-thiolato)platinum(II) 24, (sulfenato-sulfinato)platinum(II) 25, and (disulfinato)platinum(II) 26 complexes, the structures of which were elucidated by NMR spectroscopy and X-ray crystallography. The oxidation process took place regioselectively in the first step and chemoselectively in the second. The selectivities are discussed.
Collapse
Affiliation(s)
- Akihiko Ishii
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Saitama, Saitama 338-8570, Japan.
| | | | | | | |
Collapse
|