1
|
Nithimethachoke T, Boonmak C, Morikawa M. A novel alkane monooxygenase evolved from a broken piece of ribonucleotide reductase in Geobacillus kaustophilus HTA426 isolated from Mariana Trench. Extremophiles 2024; 28:18. [PMID: 38353731 PMCID: PMC10867098 DOI: 10.1007/s00792-024-01332-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 12/30/2023] [Indexed: 02/16/2024]
Abstract
We have accidentally found that a thermophilic Geobacillus kaustophilus HTA426 is capable of degrading alkanes although it has no alkane oxygenating enzyme genes. Our experimental results revealed that a putative ribonucleotide reductase small subunit GkR2loxI (GK2771) gene encodes a novel heterodinuclear Mn-Fe alkane monooxygenase/hydroxylase. GkR2loxI protein can perform two-electron oxidations similar to homonuclear diiron bacterial multicomponent soluble methane monooxygenases. This finding not only answers a long-standing question about the substrate of the R2lox protein clade, but also expands our understanding of the vast diversity and new evolutionary lineage of the bacterial alkane monooxygenase/hydroxylase family.
Collapse
Affiliation(s)
- Tanasap Nithimethachoke
- Graduate School of Environmental Science, Hokkaido University, Kita-10 Nishi-5, Kita-ku, Sapporo, 060-0810, Japan
| | - Chanita Boonmak
- Department of Microbiology, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Rd., Lat Yao, Chatuchak, Bangkok, 10900, Thailand
| | - Masaaki Morikawa
- Graduate School of Environmental Science, Hokkaido University, Kita-10 Nishi-5, Kita-ku, Sapporo, 060-0810, Japan.
| |
Collapse
|
2
|
Kajita Y, Kubo M, Arii H, Ishikawa S, Saito Y, Wasada-Tsutsui Y, Funahashi Y, Ozawa T, Masuda H. Preparations of trans- and cis- μ-1,2-Peroxodiiron(III) Complexes. Molecules 2023; 29:205. [PMID: 38202788 PMCID: PMC10780643 DOI: 10.3390/molecules29010205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/20/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
The iron(II) complex with cis,cis-1,3,5-tris(benzylamino)cyclohexane (Bn3CY) (1) has been synthesized and characterized, which reacted with dioxygen to form the peroxo complex 2 in acetone at -60 °C. On the basis of spectroscopic measurements for 2, it was confirmed that the peroxo complex 2 has a trans-μ-1,2 fashion. Additionally, the peroxo complex 2 was reacted with benzoate anion as a bridging agent to give a peroxo complex 3. The results of resonance Raman and 1H-NMR studies supported that the peroxo complex 3 is a cis-μ-1,2-peroxodiiron(III) complex. These spectral features were interpreted by using DFT calculations.
Collapse
Affiliation(s)
- Yuji Kajita
- Department of Applied Chemistry, Graduate School of Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan;
| | - Masaki Kubo
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan; (M.K.); (Y.W.-T.); (T.O.)
| | - Hidekazu Arii
- Department of Education, Graduate School of Education, University of Miyazaki, Gakuenkibanadai-Nishi, Miyazaki 889-2192, Japan;
| | - Shinya Ishikawa
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan; (M.K.); (Y.W.-T.); (T.O.)
| | - Yamato Saito
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan; (M.K.); (Y.W.-T.); (T.O.)
| | - Yuko Wasada-Tsutsui
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan; (M.K.); (Y.W.-T.); (T.O.)
| | - Yasuhiro Funahashi
- Department of Chemistry, Graduate School of Science, Osaka University, 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; (M.K.); (Y.W.-T.); (T.O.)
| | - Hideki Masuda
- Department of Applied Chemistry, Graduate School 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, Showa, Nagoya 466-8555, Japan; (M.K.); (Y.W.-T.); (T.O.)
| |
Collapse
|
3
|
Ravel-Massol R, Munshi S, Pujol A, Garcia-Serres R, Saffon-Merceron N, Mézailles N, Fustier-Boutignon M. One Ligand to Bind them All: S~C~S 2- Carbon- and Sulfur-Based Gem-Dianion as Structuring Ligand for Iron Polymetallic Assemblies. Chemistry 2023; 29:e202302130. [PMID: 37681691 DOI: 10.1002/chem.202302130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Indexed: 09/09/2023]
Abstract
Numerous synthetic models of the FeMo-co cluster of nitrogenases have been proposed to find the simplest structure with relevant reactivity. Indeed, such structures are able to perform multi-electrons reduction processes, such as the conversion of N2 to ammonia, and of CO2 into methane and alkenes. The most challenging parameter to imitate is indeed the central carbide ligand, which is believed to maintain the integrity of iron sulfide assembly during the course of catalytic cycles. The study proposes the use of bis(diphenylthiophosphinoyl)methanediide (SCS)2- as an ideal platform for the synthesis of bi- and tetra-metallic iron complexes, in which the iron-carbon interaction is maintained upon structural diversification and redox state changes.
Collapse
Affiliation(s)
- Raphaël Ravel-Massol
- Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR CNRS 5069, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Sandip Munshi
- Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR CNRS 5069, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Anthony Pujol
- Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR CNRS 5069, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Ricardo Garcia-Serres
- Université Grenoble Alpes, CNRS, CEA, IRIG Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, 38000, Grenoble, France
| | - Nathalie Saffon-Merceron
- Institut de Chimie de Toulouse ICT-UAR2599, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Nicolas Mézailles
- Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR CNRS 5069, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| | - Marie Fustier-Boutignon
- Laboratoire Hétérochimie Fondamentale et Appliquée, LHFA UMR CNRS 5069, Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France
| |
Collapse
|
4
|
Ansari M, Rajaraman G. Comparative oxidative ability of mononuclear and dinuclear high-valent iron-oxo species towards the activation of methane: does the axial/bridge atom modulate the reactivity? Dalton Trans 2023; 52:308-325. [PMID: 36504243 DOI: 10.1039/d2dt02559k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Over the years, mononuclear FeIVO species have been extensively studied, but the presence of dinuclear FeIVO species in soluble methane monooxygenase (sMMO) has inspired the development of biomimic models that could activate inert substrates such as methane. There are some successful attempts; particularly the [(Por)(m-CBA) FeIV(μ-N)FeIV(O)(Por˙+)]- species has been reported to activate methane and yield decent catalytic turnover numbers and therefore regarded as the closest to the sMMO enzyme functional model, as no mononuclear FeIVO analogues could achieve this feat. In this work, we have studied a series of mono and dinuclear models using DFT and ab initio DLPNO-CCSD(T) calculations to probe the importance of nuclearity in enhancing the reactivity. We have probed the catalytic activities of four complexes: [(HO)FeIV(O)(Por)]- (1), [(HO)FeIV(O)(Por˙+)] (2), μ-oxo dinuclear iron species [(Por)(m-CBA)FeIV(μ-O)FeIV(O) (Por˙+)]- (3) and N-bridged dinuclear iron species [(Por)(m-CBA)FeIV(μ-N)FeIV(O)(Por˙+)]- (4) towards the activation of methane. Additionally, calculations were performed on the mononuclear models [(X)FeIV(O)(Por˙+)]n {X = N 4a (n = -2), NH 4b (n = -1) and NH24c (n = 0)} to understand the role of nuclearity in the reactivity. DFT calculations performed on species 1-4 suggest an interesting variation among them, with species 1-3 possessing an intermediate spin (S = 1) as a ground state and species 4 possessing a high-spin (S = 2) as a ground state. Furthermore, the two FeIV centres in species 3 and 4 are antiferromagnetically coupled, yielding a singlet state with a distinct difference in their electronic structure. On the other hand, species 2 exhibits a ferromagnetic coupling between the FeIV and the Por˙+ moiety. Our calculations suggest that the higher barriers for the C-H bond activation of methane and the rebound step for species 1 and 3 are very high in energy, rendering them unreactive towards methane, while species 2 and 4 have lower barriers, suggesting their reactivity towards methane. Studies on the system reveal that model 4a has multiple FeN bonds facilitating greater reactivity, whereas the other two models have longer Fe-N bonds and less radical character with steeper barriers. Strong electronic cooperativity is found to be facilitated by the bridging nitride atom, and this cooperativity is suppressed by substituents such as oxygen, rendering them inactive. Thus, our study unravels that apart from enhancing the nuclearity, bridging atoms that facilitate strong cooperation between the metals are required to activate very inert substrates such as methane, and our results are broadly in agreement with earlier experimental findings.
Collapse
Affiliation(s)
- Mursaleem Ansari
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| | - Gopalan Rajaraman
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| |
Collapse
|
5
|
Tang Y, Li Y, Feng Tao F. Activation and catalytic transformation of methane under mild conditions. Chem Soc Rev 2021; 51:376-423. [PMID: 34904592 DOI: 10.1039/d1cs00783a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the last few decades, worldwide scientists have been motivated by the promising production of chemicals from the widely existing methane (CH4) under mild conditions for both chemical synthesis with low energy consumption and climate remediation. To achieve this goal, a whole library of catalytic chemistries of transforming CH4 to various products under mild conditions is required to be developed. Worldwide scientists have made significant efforts to reach this goal. These significant efforts have demonstrated the feasibility of oxidation of CH4 to value-added intermediate compounds including but not limited to CH3OH, HCHO, HCOOH, and CH3COOH under mild conditions. The fundamental understanding of these chemical and catalytic transformations of CH4 under mild conditions have been achieved to some extent, although currently neither a catalyst nor a catalytic process can be used for chemical production under mild conditions at a large scale. In the academic community, over ten different reactions have been developed for converting CH4 to different types of oxygenates under mild conditions in terms of a relatively low activation or catalysis temperature. However, there is still a lack of a molecular-level understanding of the activation and catalysis processes performed in extremely complex reaction environments under mild conditions. This article reviewed the fundamental understanding of these activation and catalysis achieved so far. Different oxidative activations of CH4 or catalytic transformations toward chemical production under mild conditions were reviewed in parallel, by which the trend of developing catalysts for a specific reaction was identified and insights into the design of these catalysts were gained. As a whole, this review focused on discussing profound insights gained through endeavors of scientists in this field. It aimed to present a relatively complete picture for the activation and catalytic transformations of CH4 to chemicals under mild conditions. Finally, suggestions of potential explorations for the production of chemicals from CH4 under mild conditions were made. The facing challenges to achieve high yield of ideal products were highlighted and possible solutions to tackle them were briefly proposed.
Collapse
Affiliation(s)
- Yu Tang
- Institute of Molecular Catalysis and In situ/operando Studies, College of Chemistry, Fuzhou University, Fujian, 350000, China.
| | - Yuting Li
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
| | - Franklin Feng Tao
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
| |
Collapse
|
6
|
Enzyme-like mechanism of selective toluene oxidation to benzaldehyde over organophosphoric acid-bonded nano-oxides. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63758-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
7
|
Misawa-Suzuki T, Mafune S, Nagao H. Synthesis of Carbonato- and Doubly Oxido-Bridged Diruthenium(III,IV) Complex and Reactions with Cations. Inorg Chem 2021; 60:9996-10005. [PMID: 34152773 DOI: 10.1021/acs.inorgchem.1c01262] [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
Doubly oxido-bridged transition metal moieties, {M2(μ-O)2}, play important roles as oxidation reaction centers in nature. This work features a diruthenium(III,IV) complex with a doubly oxido-bridged core {Ru2III,IV(μ-O)2}3+ with a carbonato bridged between the two ruthenium centers, M[{RuIII,IV(ebpma)}2(μ-O)2(μ-O2CO)]2(PF6)3 (M[1CO3]2(PF6)3; Carbonato complex, ebpma; ethylbis(2-pyridymethyl)amine), and explores the interactions of this complex with cations (H+ and M+). M[1CO3]2(PF6)3 was formed via reactions of a singly oxido-bridged complex, [{RuIII,IVCl2(ebpma)}2(μ-O)]PF6·(CH3)2CO, with M2CO3 (M = K, Na) or with CO2(g), adjusted to around pH 12 with NaOH(aq.), in a water-acetone mixed solvent. The Carbonato complex was isolated as a powder in the form of M[1CO3]2(PF6)3 (M = K, Na), because of the interactions between the carbonato moiety and K+ or Na+ in the solid structure. In acidic aqueous solutions, unexpectedly, the carbonato ligand remained bound to the doubly bridged core, {Ru2III,IV(μ-O)2}3+ or {Ru2III,IV(μ-O)(μ-OH)}4+, without decarboxylation even under pH 1.0. Two-step one-protonation/deprotonation occurred reversibly between pH 1.0 and 13.2 to the bridging oxido and carbonato ligands. The structures of the corresponding one- and two-protonated complexes ([1CO3H]2+ and [1CO32H]3+) were successfully characterized.
Collapse
Affiliation(s)
- Tomoyo Misawa-Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554 Japan
| | - Sota Mafune
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554 Japan
| | - Hirotaka Nagao
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554 Japan
| |
Collapse
|
8
|
Miller KR, Biswas S, Jasniewski A, Follmer AH, Biswas A, Albert T, Sabuncu S, Bominaar EL, Hendrich MP, Moënne-Loccoz P, Borovik AS. Artificial Metalloproteins with Dinuclear Iron-Hydroxido Centers. J Am Chem Soc 2021; 143:2384-2393. [PMID: 33528256 DOI: 10.1021/jacs.0c12564] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Dinuclear iron centers with a bridging hydroxido or oxido ligand form active sites within a variety of metalloproteins. A key feature of these sites is the ability of the protein to control the structures around the Fe centers, which leads to entatic states that are essential for function. To simulate this controlled environment, artificial proteins have been engineered using biotin-streptavidin (Sav) technology in which Fe complexes from adjacent subunits can assemble to form [FeIII-(μ-OH)-FeIII] cores. The assembly process is promoted by the site-specific localization of the Fe complexes within a subunit through the designed mutation of a tyrosinate side chain to coordinate the Fe centers. An important outcome is that the Sav host can regulate the Fe···Fe separation, which is known to be important for function in natural metalloproteins. Spectroscopic and structural studies from X-ray diffraction methods revealed uncommonly long Fe···Fe separations that change by less than 0.3 Å upon the binding of additional bridging ligands. The structural constraints imposed by the protein host on the di-Fe cores are unique and create examples of active sites having entatic states within engineered artificial metalloproteins.
Collapse
Affiliation(s)
- Kelsey R Miller
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697, United States
| | - Saborni Biswas
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew Jasniewski
- Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697, United States
| | - Alec H Follmer
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697, United States
| | - Ankita Biswas
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697, United States
| | - Therese Albert
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Mail Code HRC3, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - Sinan Sabuncu
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Mail Code HRC3, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - Emile L Bominaar
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Michael P Hendrich
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Pierre Moënne-Loccoz
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Mail Code HRC3, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - A S Borovik
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697, United States
| |
Collapse
|
9
|
Chakraborty T, Mondal R, Ghanta R, Chakraborty A, Chattopadhyay T. Triton X‐100 functionalized Cu(II) dihydrazone based complex immobilized on Fe
3
O
4
@dopa: A highly efficient catalyst for oxidation of alcohols, alkanes, and sulfides and epoxidation of alkenes. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tonmoy Chakraborty
- Department of Chemistry University of Calcutta 92, A.P.C.Road Kolkata 700009 India
| | - Rimpa Mondal
- Department of Chemistry Diamond Harbour Women's University Diamond Harbour Road, Sarisha, South 24 Parganas (S) West Bengal 743368 India
| | - Rinku Ghanta
- Department of Chemistry Diamond Harbour Women's University Diamond Harbour Road, Sarisha, South 24 Parganas (S) West Bengal 743368 India
| | - Aratrika Chakraborty
- Department of Chemistry University of Calcutta 92, A.P.C.Road Kolkata 700009 India
| | - Tanmay Chattopadhyay
- Department of Chemistry Diamond Harbour Women's University Diamond Harbour Road, Sarisha, South 24 Parganas (S) West Bengal 743368 India
| |
Collapse
|
10
|
Walleck S, Glaser T. A Dinucleating Ligand System with Varying Terminal Donors to Mimic Diiron Active Sites. Isr J Chem 2020. [DOI: 10.1002/ijch.201900097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Stephan Walleck
- Lehrstuhl für Anorganische Chemie I, Fakultät für Chemie Universität Bielefeld Universitätsstrasse 25 D-33615 Bielefeld Germany
| | - Thorsten Glaser
- Lehrstuhl für Anorganische Chemie I, Fakultät für Chemie Universität Bielefeld Universitätsstrasse 25 D-33615 Bielefeld Germany
| |
Collapse
|
11
|
Will J, Schneider L, Becker J, Becker S, Miska A, Gawlig C, Schindler S. Synthesis and Reactivity of Iron(II) Complexes with a New Tripodal Imine Ligand. Isr J Chem 2020. [DOI: 10.1002/ijch.201900120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Janine Will
- Institute of Inorganic and Analytic Chemistry Justus-Liebig University of Gießen Heinrich-Buff Ring 17 D-35392 Gießen Germany
| | - Lars Schneider
- Institute of Inorganic and Analytic Chemistry Justus-Liebig University of Gießen Heinrich-Buff Ring 17 D-35392 Gießen Germany
| | - Jonathan Becker
- Institute of Inorganic and Analytic Chemistry Justus-Liebig University of Gießen Heinrich-Buff Ring 17 D-35392 Gießen Germany
| | - Sabine Becker
- Technische Universität Kaiserslautern Fachbereich Chemie Erwin-Schrödinger-Straße Gebäude 54/684 67663 Kaiserslautern Germany
| | - Andreas Miska
- Institute of Inorganic and Analytic Chemistry Justus-Liebig University of Gießen Heinrich-Buff Ring 17 D-35392 Gießen Germany
| | - Christopher Gawlig
- Institute of Inorganic and Analytic Chemistry Justus-Liebig University of Gießen Heinrich-Buff Ring 17 D-35392 Gießen Germany
| | - Siegfried Schindler
- Institute of Inorganic and Analytic Chemistry Justus-Liebig University of Gießen Heinrich-Buff Ring 17 D-35392 Gießen Germany
| |
Collapse
|
12
|
Bols ML, Rhoda HM, Snyder BER, Solomon EI, Pierloot K, Schoonheydt RA, Sels BF. Advances in the synthesis, characterisation, and mechanistic understanding of active sites in Fe-zeolites for redox catalysts. Dalton Trans 2020; 49:14749-14757. [PMID: 33140781 DOI: 10.1039/d0dt01857k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The recent research developments on the active sites in Fe-zeolites for redox catalysis are discussed. Building on the characterisation of the α-Fe/α-O active sites in the beta and chabazite zeolites, we demonstrate a bottom-up approach to successfully understand and develop Fe-zeolite catalysts. We use the room temperature benzene to phenol reaction as a relevant example. We then suggest how the spectroscopic identification of other monomeric and dimeric iron sites could be tackled. The challenges in the characterisation of active sites and intermediates in NOX selective catalytic reduction catalysts and further development of catalysts for mild partial methane oxidation are briefly discussed.
Collapse
Affiliation(s)
- Max L Bols
- Department of Microbial and Molecular Systems, KU Leuven, 3001 Heverlee, Belgium.
| | | | | | | | | | | | | |
Collapse
|
13
|
Dutta M, Bania KK, Pratihar S. Remote ‘Imidazole’ Based Ruthenium(II)
p
‐Cymene Precatalyst for Selective Oxidative Cleavage of C−C Multiple Bonds. ChemCatChem 2019. [DOI: 10.1002/cctc.201900242] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Manali Dutta
- Department of Chemical SciencesTezpur University, Napaam Assam-784028 India
| | - Kusum Kumar Bania
- Department of Chemical SciencesTezpur University, Napaam Assam-784028 India
| | - Sanjay Pratihar
- Department of Chemical SciencesTezpur University, Napaam Assam-784028 India
| |
Collapse
|
14
|
Lukov VV, Shcherbakov IN, Levchenkov SI, Tupolova YP, Popov LD, Pankov I, Posokhova SV. Controlled Molecular Magnetism of Bi- and Polynuclear Transition Metal Complexes Based on Hydrazones, Azomethines, and Their Analogs. RUSS J COORD CHEM+ 2019. [DOI: 10.1134/s1070328419030060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Saiz F, Bernasconi L. Electronic structure and reactivity of Fe(iv)oxo species in metal-organic frameworks. Phys Chem Chem Phys 2019; 21:4965-4974. [PMID: 30758369 DOI: 10.1039/c8cp07580h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We investigate the potential use of Fe(iv)oxo species supported on a metal-organic framework in the catalytic hydroxylation of methane to produce methanol. We use periodic density-functional theory calculations at the 6-31G**/B3LYP level of theory to study the electronic structure and chemical reactivity in the hydrogen abstraction reaction from methane in the presence of Fe(iv)O(oxo) supported on MOF-74. Our results indicate that the Fe(iv)O moiety in MOF-74 is characterised by a highly reactive (quintet) ground-state, with a distance between Fe(iv) and O(oxo) of 1.601 Å, consistent with other high-spin Fe(iv)O inorganic complexes in the gas phase and in aqueous solution. Similar to the latter systems, the highly electrophilic character (and thus the reactivity) of Fe(iv)O in MOF-74 is determined by the presence of a low-lying anti-bonding virtual orbital (3σ*), which acts as an electron acceptor in the early stages of the hydrogen atom abstraction from methane. We estimate an energy barrier for hydrogen abstraction of 50.77 kJ mol-1, which is comparable to the values estimated in other gas-phase and hydrated Fe(iv)O-based complexes with the ability to oxidise methane. Our findings therefore suggest that metal-organic frameworks can provide suitable supports to develop new solid-state catalysts for organic oxidation reactions.
Collapse
Affiliation(s)
- Fernan Saiz
- Institut de Ciència de Materials de Barcelona, Bellaterra, Barcelona, 08193, Spain.
| | - Leonardo Bernasconi
- Center for Research Computing, University of Pittsburgh, 312 Schenley Place, 4420 Bayard Street, Pittsburgh, PA 15260, USA.
| |
Collapse
|
16
|
Shaabani A, Mohammadian R, Farhid H, Karimi Alavijeh M, Amini MM. Iron-Decorated, Guanidine Functionalized Metal-Organic Framework as a Non-heme Iron-Based Enzyme Mimic System for Catalytic Oxidation of Organic Substrates. Catal Letters 2019. [DOI: 10.1007/s10562-019-02691-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
17
|
Glaser T. A dinucleating ligand system with varying terminal donor functions but without bridging donor functions: Design, synthesis, and applications for diiron complexes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Anitha N, Saravanan N, Ajaykamal T, Suresh E, Palaniandavar M. Catecholase activity of mononuclear copper(II) complexes of tridentate 3N ligands in aqueous and aqueous micellar media: Influence of stereoelectronic factors on catalytic activity. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
19
|
Aschenbrenner M, Stammler A, Bögge H, Glaser T. Synthesis and Characterization of a μ-Oxo-Bridged Diferric Complex: An Attempt to Influence the Configuration by Changing the Spacer. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Aschenbrenner
- Lehrstuhl für Anorganische Chemie I; Fakultät für Chemie; Universität Bielefeld; Universitätsstrasse 25 33615 Bielefeld Germany
| | - Anja Stammler
- Lehrstuhl für Anorganische Chemie I; Fakultät für Chemie; Universität Bielefeld; Universitätsstrasse 25 33615 Bielefeld Germany
| | - Hartmut Bögge
- Lehrstuhl für Anorganische Chemie I; Fakultät für Chemie; Universität Bielefeld; Universitätsstrasse 25 33615 Bielefeld Germany
| | - Thorsten Glaser
- Lehrstuhl für Anorganische Chemie I; Fakultät für Chemie; Universität Bielefeld; Universitätsstrasse 25 33615 Bielefeld Germany
| |
Collapse
|
20
|
Suseelan AS, Varghese B, Edamana P, Murthy NN. Reagent‐Regulated Oxidative
O
‐Demethylation of a Ferrous Complex Stabilized by a Tetradentate N Ligand with a Methoxyphenyl Substituent. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201700946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Babu Varghese
- Sophisticated Analytical Instruments Facility (SAIF) IIT Madras 600036 Chennai India
| | - Prasad Edamana
- Sophisticated Analytical Instruments Facility (SAIF) IIT Madras 600036 Chennai India
| | | |
Collapse
|
21
|
Zhang HX, Ke WS, Zhu CY, Wang JY, Sasaki Y, Chen ZN, Lin C, Wang Z, Liao S, Wu W. Synthesis, characterization and properties of oxo-bridged diruthenium(III) complexes with thiocyanato and cyanato ligands. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
22
|
Ma Z, Strickland KT, Cherne MD, Sehanobish E, Rohde KH, Self WT, Davidson VL. The Rv2633c protein of Mycobacterium tuberculosis is a non-heme di-iron catalase with a possible role in defenses against oxidative stress. J Biol Chem 2017; 293:1590-1595. [PMID: 29242190 DOI: 10.1074/jbc.ra117.000421] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/13/2017] [Indexed: 12/19/2022] Open
Abstract
The Rv2633c gene in Mycobacterium tuberculosis is rapidly up-regulated after macrophage infection, suggesting that Rv2633c is involved in M. tuberculosis pathogenesis. However, the activity and role of the Rv2633c protein in host colonization is unknown. Here, we analyzed the Rv2633c protein sequence, which revealed the presence of an HHE cation-binding domain common in hemerythrin-like proteins. Phylogenetic analysis indicated that Rv2633c is a member of a distinct subset of hemerythrin-like proteins exclusive to mycobacteria. The Rv2633c sequence was significantly similar to protein sequences from other pathogenic strains within that subset, suggesting that these proteins are involved in mycobacteria virulence. We expressed and purified the Rv2633c protein in Escherichia coli and found that it contains two iron atoms, but does not behave like a hemerythrin. It migrated as a dimeric protein during size-exclusion chromatography. It was not possible to reduce the protein or observe any evidence for its interaction with O2 However, Rv2633c did exhibit catalase activity with a kcat of 1475 s-1 and Km of 10.1 ± 1.7 mm Cyanide and azide inhibited the catalase activity with Ki values of 3.8 μm and 37.7 μm, respectively. Rv2633c's activity was consistent with a role in defenses against oxidative stress generated during host immune responses after M. tuberculosis infection of macrophages. We note that Rv2633c is the first example of a non-heme di-iron catalase, and conclude that it is a member of a subset of hemerythrin-like proteins exclusive to mycobacteria, with likely roles in protection against host defenses.
Collapse
Affiliation(s)
- Zhongxin Ma
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| | - Kyle T Strickland
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| | - Michelle D Cherne
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| | - Esha Sehanobish
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| | - Kyle H Rohde
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| | - William T Self
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| | - Victor L Davidson
- From the Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida 32827
| |
Collapse
|
23
|
Molecular magnetism, quo vadis? A historical perspective from a coordination chemist viewpoint☆. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.004] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
24
|
Liu Y, Wang C, Xue D, Xiao M, Li C, Xiao J. Reactions Catalysed by a Binuclear Copper Complex: Aerobic Cross Dehydrogenative Coupling of N
-Aryl Tetrahydroisoquinolines. Chemistry 2017; 23:3051-3061. [DOI: 10.1002/chem.201604749] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Yuxia Liu
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Dong Xue
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Miao Xiao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Chaoqun Li
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
| | - Jianliang Xiao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P. R. China
- Department of Chemistry; University of Liverpool; Liverpool L69 7ZD UK
| |
Collapse
|
25
|
Singh Y, Patel RN, Singh YP, Patel AK, Patel N, Singh R, Butcher RJ, Jasinski JP, Colacio E, Palacios MA. Unprecedented tetranuclear complexes with “weighing balance shaped” topology: single crystal structures, unusual EPR spectra, magnetic properties and antioxidant activity. Dalton Trans 2017; 46:11860-11874. [DOI: 10.1039/c7dt02595e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Two new copper(ii) complexes have been synthesized and characterized by single crystal X-ray diffraction.
Collapse
Affiliation(s)
- Yogendra Singh
- Department of Chemistry
- A.P.S. University
- Rewa (M.P.)
- India
| | - Ram N. Patel
- Department of Chemistry
- A.P.S. University
- Rewa (M.P.)
- India
| | | | - Abhay K. Patel
- Department of Chemistry
- A.P.S. University
- Rewa (M.P.)
- India
| | - Neetu Patel
- Department of Chemistry
- A.P.S. University
- Rewa (M.P.)
- India
| | - Rita Singh
- Department of Physics
- Govt. Model Science college
- Rewa (M.P.)
- India
| | - Raymond J. Butcher
- Department of Inorganic & Structural Chemistry
- Howard University
- Washington DC
- USA
| | | | - Enrique Colacio
- Departamento de QuimicaInorganica
- Universidad de Granada
- Granada
- Spain
| | | |
Collapse
|
26
|
Mitome H, Ishizuka T, Kotani H, Shiota Y, Yoshizawa K, Kojima T. Mechanistic Insights into C–H Oxidations by Ruthenium(III)-Pterin Complexes: Impact of Basicity of the Pterin Ligand and Electron Acceptability of the Metal Center on the Transition States. J Am Chem Soc 2016; 138:9508-20. [DOI: 10.1021/jacs.6b03785] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroumi Mitome
- Department
of Chemistry, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tomoya Ishizuka
- Department
of Chemistry, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
| | - Hiroaki Kotani
- Department
of Chemistry, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
| | - Yoshihito Shiota
- Institute
for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-Ku, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute
for Materials Chemistry and Engineering, Kyushu University, Motooka, Nishi-Ku, Fukuoka 819-0395, Japan
| | - Takahiko Kojima
- Department
of Chemistry, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
| |
Collapse
|
27
|
Zhang J, Wang Y, Luo N, Chen Z, Wu K, Yin G. Redox inactive metal ion triggered N-dealkylation by an iron catalyst with dioxygen activation: a lesson from lipoxygenases. Dalton Trans 2016; 44:9847-59. [PMID: 25939391 DOI: 10.1039/c5dt00804b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Utilization of dioxygen as the terminal oxidant at ambient temperature is always a challenge in redox chemistry, because it is hard to oxidize a stable redox metal ion like iron(III) to its high oxidation state to initialize the catalytic cycle. Inspired by the dioxygenation and co-oxidase activity of lipoxygenases, herein, we introduce an alternative protocol to activate the sluggish iron(III) species with non-redox metal ions, which can promote its oxidizing power to facilitate substrate oxidation with dioxygen, thus initializing the catalytic cycle. In oxidations of N,N-dimethylaniline and its analogues, adding Zn(OTf)2 to the [Fe(TPA)Cl2]Cl catalyst can trigger the amine oxidation with dioxygen, whereas [Fe(TPA)Cl2]Cl alone is very sluggish. In stoichiometric oxidations, it has also been confirmed that the presence of Zn(OTf)2 can apparently improve the electron transfer capability of the [Fe(TPA)Cl2]Cl complex. Experiments using different types of substrates as trapping reagents disclosed that the iron(IV) species does not occur in the catalytic cycle, suggesting that oxidation of amines is initialized by electron transfer rather than hydrogen abstraction. Combined experiments from UV-Vis, high resolution mass spectrometry, electrochemistry, EPR and oxidation kinetics support that the improved electron transfer ability of iron(III) species originates from its interaction with added Lewis acids like Zn(2+) through a plausible chloride or OTf(-) bridge, which has promoted the redox potential of iron(III) species. The amine oxidation mechanism was also discussed based on the available data, which resembles the co-oxidase activity of lipoxygenases in oxidative dealkylation of xenobiotic metabolisms where an external electron donor is not essential for dioxygen activation.
Collapse
Affiliation(s)
- Jisheng Zhang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, Luoyu Road 1037, Wuhan 430074, PR China.
| | | | | | | | | | | |
Collapse
|
28
|
Patel RN, Singh YP, Singh Y, Butcher RJ, Zeller M. Unprecedented copper(ii) mediated in situ formation of gem-diol binuclear complexes: a combined experimental and computational study. RSC Adv 2016. [DOI: 10.1039/c6ra20367a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The two alkoxo bridged complexes [Cu2(L1)2(HL2)2(H2O)](NO3)2·2H2O 1 and [Cu2(L1)2(HL2)2](NO3)2·H2O 2 have been synthesized by metal assisted hydrolysis with two Schiff bases, where L1 is 2-benzoylpyridine and HL2 is phenyl(pyridin-2-yl)methanediol.
Collapse
Affiliation(s)
- Ram N. Patel
- Department of Chemistry
- A. P. S. University
- Rewa
- India
| | | | | | - R. J. Butcher
- Department of Inorganic & Structural Chemistry
- Howard University
- Washington DC
- 22031 USA
| | | |
Collapse
|
29
|
Rettenmeier CA, Wadepohl H, Gade LH. Structural Characterization of a Hydroperoxo Nickel Complex and Its Autoxidation: Mechanism of Interconversion between Peroxo, Superoxo, and Hydroperoxo Species. Angew Chem Int Ed Engl 2015; 54:4880-4. [DOI: 10.1002/anie.201500141] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Indexed: 11/06/2022]
|
30
|
Rettenmeier CA, Wadepohl H, Gade LH. Structural Characterization of a Hydroperoxo Nickel Complex and Its Autoxidation: Mechanism of Interconversion between Peroxo, Superoxo, and Hydroperoxo Species. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500141] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
31
|
Kazaryan A, Baerends EJ. Ligand Field Effects and the High Spin–High Reactivity Correlation in the H Abstraction by Non-Heme Iron(IV)–Oxo Complexes: A DFT Frontier Orbital Perspective. ACS Catal 2015. [DOI: 10.1021/cs501721y] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Andranik Kazaryan
- VU University Amsterdam, Theoretical Chemistry,
FEW, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Evert Jan Baerends
- VU University Amsterdam, Theoretical Chemistry,
FEW, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| |
Collapse
|
32
|
Abstract
In order to address how diverse metalloprotein active sites, in particular those containing iron and copper, guide O₂binding and activation processes to perform diverse functions, studies of synthetic models of the active sites have been performed. These studies have led to deep, fundamental chemical insights into how O₂coordinates to mono- and multinuclear Fe and Cu centers and is reduced to superoxo, peroxo, hydroperoxo, and, after O-O bond scission, oxo species relevant to proposed intermediates in catalysis. Recent advances in understanding the various factors that influence the course of O₂activation by Fe and Cu complexes are surveyed, with an emphasis on evaluating the structure, bonding, and reactivity of intermediates involved. The discussion is guided by an overarching mechanistic paradigm, with differences in detail due to the involvement of disparate metal ions, nuclearities, geometries, and supporting ligands providing a rich tapestry of reaction pathways by which O₂is activated at Fe and Cu sites.
Collapse
|
33
|
Kärkäs MD, Verho O, Johnston EV, Åkermark B. Artificial Photosynthesis: Molecular Systems for Catalytic Water Oxidation. Chem Rev 2014; 114:11863-2001. [DOI: 10.1021/cr400572f] [Citation(s) in RCA: 1024] [Impact Index Per Article: 102.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Markus D. Kärkäs
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Oscar Verho
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Eric V. Johnston
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Björn Åkermark
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| |
Collapse
|
34
|
Zhang HX, Sasaki Y, Zhang Y, Ye S, Osawa M, Abe M, Uosaki K. Synthesis and properties of the cyano complex of oxo-centered triruthenium core [Ru3(μ3-O)(μ-CH3COO)6(pyridine)2(CN)]. Inorg Chem 2014; 53:1288-94. [PMID: 24304468 DOI: 10.1021/ic4012197] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The preparation and properties of a new cyano complex containing the Ru3(μ3-O) core, [Ru3(μ3-O)(μ-CH3COO)6(py)2(CN)] (1; py = pyridine), are reported. Complex 1 in CH2Cl2 showed intense absorption bands at 244, 334, and 662 nm, corresponding to a π-π* transition of the ligand, cluster-to-ligand charge transfer, and intracluster transitions, respectively. The cyclic voltammogram of 1 in 0.1 M (n-Bu)4NPF6-CH2Cl2 showed redox waves for the processes Ru3(II,II,III)/Ru3(II,III,III), Ru3(II,III,III)/Ru3(III,III,III), and Ru3(III,III,III)/Ru3(III,III,IV) at E1/2 = -1.49, -0.26, and +1.03 V vs Ag/AgCl, respectively. The first two redox potentials are more negative by ca. 0.2 V in comparison with the corresponding potentials of [Ru3(μ3-O)(μ-CH3COO)6(py)3](+). This is in sharp contrast to the positive shifts of the corresponding waves of [Ru3(II,III,III)(μ3-O)(μ-CH3COO)6(py)2(CO)]. Density functional theory (DFT) calculations of [Ru3(II,III,III)(μ3-O)(μ-CH3COO)6(py)3], [Ru3(II,III,III)(μ3-O)(μ-CH3COO)6(py)2(CN)](-), and [Ru3(II,III,III)(μ3-O)(μ-CH3COO)6(py)2(CO)] showed that the positive charge of the ruthenium is delocalized over the triruthenium cores of the first two and is localized as Ru(II)(CO){Ru(III)(py)}2 in the CO complex. The calculations explain the difference in the π interactions of the two ligands with the triruthenium cores.
Collapse
Affiliation(s)
- Hua-Xin Zhang
- Catalysis Research Center, Hokkaido University , Sapporo 001-0021, Japan
| | | | | | | | | | | | | |
Collapse
|
35
|
Vennampalli M, Liang G, Webster CE, Zhao X. Water Oxidation by Mononuclear Ruthenium Complex with a Pentadentate Isoquinoline-Bipyridyl Ligand. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301393] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
36
|
Majumdar A, Apfel UP, Jiang Y, Moënne-Loccoz P, Lippard SJ. Versatile reactivity of a solvent-coordinated diiron(II) compound: synthesis and dioxygen reactivity of a mixed-valent Fe(II)Fe(III) species. Inorg Chem 2014; 53:167-81. [PMID: 24359397 PMCID: PMC3915513 DOI: 10.1021/ic4019585] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new, DMF-coordinated, preorganized diiron compound [Fe2(N-Et-HPTB)(DMF)4](BF4)3 (1) was synthesized, avoiding the formation of [Fe(N-Et-HPTB)](BF4)2 (10) and [Fe2(N-Et-HPTB)(μ-MeCONH)](BF4)2 (11), where N-Et-HPTB is the anion of N,N,N',N'-tetrakis[2-(1-ethylbenzimidazolyl)]-2-hydroxy-1,3-diaminopropane. Compound 1 is a versatile reactant from which nine new compounds have been generated. Transformations include solvent exchange to yield [Fe2(N-Et-HPTB)(MeCN)4](BF4)3 (2), substitution to afford [Fe2(N-Et-HPTB)(μ-RCOO)](BF4)2 (3, R = Ph; 4, RCOO = 4-methyl-2,6-diphenyl benzoate]), one-electron oxidation by (Cp2Fe)(BF4) to yield a Robin-Day class II mixed-valent diiron(II,III) compound, [Fe2(N-Et-HPTB)(μ-PhCOO)(DMF)2](BF4)3 (5), two-electron oxidation with tris(4-bromophenyl)aminium hexachloroantimonate to generate [Fe2(N-Et-HPTB)Cl3(DMF)](BF4)2 (6), reaction with (2,2,6,6-tetramethylpiperidin-1-yl)oxyl to form [Fe5(N-Et-HPTB)2(μ-OH)4(μ-O)(DMF)2](BF4)4 (7), and reaction with dioxygen to yield an unstable peroxo compound that decomposes at room temperature to generate [Fe4(N-Et-HPTB)2(μ-O)3(H2O)2](BF4)·8DMF (8) and [Fe4(N-Et-HPTB)2(μ-O)4](BF4)2 (9). Compound 5 loses its bridging benzoate ligand upon further oxidation to form [Fe2(N-Et-HPTB)(OH)2(DMF)2](BF4)3 (12). Reaction of the diiron(II,III) compound 5 with dioxygen was studied in detail by spectroscopic methods. All compounds (1-12) were characterized by single-crystal X-ray structure determinations. Selected compounds and reaction intermediates were further examined by a combination of elemental analysis, electronic absorption spectroscopy, Mössbauer spectroscopy, EPR spectroscopy, resonance Raman spectroscopy, and cyclic voltammetry.
Collapse
Affiliation(s)
- Amit Majumdar
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Ulf-Peter Apfel
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Yunbo Jiang
- Division of Environmental and Biomolecular Systems, Institute of Environmental Health, Oregon Health and Science University, Portland, Oregon 97239
| | - Pierre Moënne-Loccoz
- Division of Environmental and Biomolecular Systems, Institute of Environmental Health, Oregon Health and Science University, Portland, Oregon 97239
| | - Stephen J. Lippard
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| |
Collapse
|
37
|
Xiao J, Deng L. Iron-mediated C-H bond amination by organic azides on a tripodal bis(anilido)iminophosphorane platform. Dalton Trans 2013; 42:5607-10. [PMID: 23478513 DOI: 10.1039/c3dt50518a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bis(anilido)iminophosphorane complex, abbreviated as [((Mes)N2N(Ad))Fe(THF)], can react with alkyl azides to yield ligand-based C-H bond amination products suggesting the high reactivity of iron(IV)-imido species supported by the tripodal bis(anilido)iminophosphorane ligand platform [(Mes)N2N(Ad)](2-).
Collapse
Affiliation(s)
- Jie Xiao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, People's Republic of China
| | | |
Collapse
|
38
|
Hintermair U, Sheehan SW, Parent AR, Ess DH, Richens DT, Vaccaro PH, Brudvig GW, Crabtree RH. Precursor Transformation during Molecular Oxidation Catalysis with Organometallic Iridium Complexes. J Am Chem Soc 2013; 135:10837-51. [DOI: 10.1021/ja4048762] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ulrich Hintermair
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Stafford W. Sheehan
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Alexander R. Parent
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Daniel H. Ess
- Department of Chemistry & Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - David T. Richens
- Department of Chemistry & Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, United States
| | - Patrick H. Vaccaro
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Gary W. Brudvig
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| | - Robert H. Crabtree
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United
States
| |
Collapse
|
39
|
Shiota Y, Juhász G, Yoshizawa K. Role of Tyrosine Residue in Methane Activation at the Dicopper Site of Particulate Methane Monooxygenase: A Density Functional Theory Study. Inorg Chem 2013; 52:7907-17. [DOI: 10.1021/ic400417d] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoshihito Shiota
- Institute for Materials
Chemistry and Engineering and International Research Center for Molecular
System, Kyushu University, Fukuoka 819-0395,
Japan
| | - Gergely Juhász
- Institute for Materials
Chemistry and Engineering and International Research Center for Molecular
System, Kyushu University, Fukuoka 819-0395,
Japan
| | - Kazunari Yoshizawa
- Institute for Materials
Chemistry and Engineering and International Research Center for Molecular
System, Kyushu University, Fukuoka 819-0395,
Japan
| |
Collapse
|
40
|
Unexpected weak magnetic exchange coupling between haem and non-haem iron in the catalytic site of nitric oxide reductase (NorBC) from Paracoccus denitrificans1. Biochem J 2013; 451:389-94. [DOI: 10.1042/bj20121406] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bacterial NOR (nitric oxide reductase) is a major source of the powerful greenhouse gas N2O. NorBC from Paracoccus denitrificans is a heterodimeric multi-haem transmembrane complex. The active site, in NorB, comprises high-spin haem b3 in close proximity with non-haem iron, FeB. In oxidized NorBC, the active site is EPR-silent owing to exchange coupling between FeIII haem b3 and FeBIII (both S=5/2). On the basis of resonance Raman studies [Moënne-Loccoz, Richter, Huang, Wasser, Ghiladi, Karlin and de Vries (2000) J. Am. Chem. Soc. 122, 9344–9345], it has been assumed that the coupling is mediated by an oxo-bridge and subsequent studies have been interpreted on the basis of this model. In the present study we report a VFVT (variable-field variable-temperature) MCD (magnetic circular dichroism) study that determines an isotropic value of J=−1.7 cm−1 for the coupling. This is two orders of magnitude smaller than that encountered for oxo-bridged diferric systems, thus ruling out this configuration. Instead, it is proposed that weak coupling is mediated by a conserved glutamate residue.
Collapse
|
41
|
Barros WP, Inglis R, Nichol GS, Rajeshkumar T, Rajaraman G, Piligkos S, Stumpf HO, Brechin EK. From antiferromagnetic to ferromagnetic exchange in a family of oxime-based MnIII dimers: a magneto-structural study. Dalton Trans 2013; 42:16510-7. [DOI: 10.1039/c3dt52009a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
42
|
Bigi JP, Harman WH, Lassalle-Kaiser B, Robles DM, Stich TA, Yano J, Britt RD, Chang CJ. A high-spin iron(IV)-oxo complex supported by a trigonal nonheme pyrrolide platform. J Am Chem Soc 2012; 134:1536-42. [PMID: 22214221 DOI: 10.1021/ja207048h] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the generation and characterization of a new high-spin iron(IV)-oxo complex supported by a trigonal nonheme pyrrolide platform. Oxygen-atom transfer to [(tpa(Mes))Fe(II)](-) (tpa(Ar) = tris(5-arylpyrrol-2-ylmethyl)amine) in acetonitrile solution affords the Fe(III)-alkoxide product [(tpa(Mes2MesO))Fe(III)](-) resulting from intramolecular C-H oxidation with no observable ferryl intermediates. In contrast, treatment of the phenyl derivative [(tpa(Ph))Fe(II)](-) with trimethylamine N-oxide in acetonitrile solution produces the iron(IV)-oxo complex [(tpa(Ph))Fe(IV)(O)](-) that has been characterized by a suite of techniques, including mass spectrometry as well as UV-vis, FTIR, Mössbauer, XAS, and parallel-mode EPR spectroscopies. Mass spectral, FTIR, and optical absorption studies provide signatures for the iron-oxo chromophore, and Mössbauer and XAS measurements establish the presence of an Fe(IV) center. Moreover, the Fe(IV)-oxo species gives parallel-mode EPR features indicative of a high-spin, S = 2 system. Preliminary reactivity studies show that the high-spin ferryl tpa(Ph) complex is capable of mediating intermolecular C-H oxidation as well as oxygen-atom transfer chemistry.
Collapse
Affiliation(s)
- Julian P Bigi
- Department of Chemistry, University of California Berkeley, Berkeley, California 94720, USA
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Sumida K, Rogow DL, Mason JA, McDonald TM, Bloch ED, Herm ZR, Bae TH, Long JR. Carbon dioxide capture in metal-organic frameworks. Chem Rev 2011; 112:724-81. [PMID: 22204561 DOI: 10.1021/cr2003272] [Citation(s) in RCA: 3796] [Impact Index Per Article: 292.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Kenji Sumida
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Chakravarty AR, Roy M. Photoactivated DNA Cleavage and Anticancer Activity of 3d Metal Complexes. PROGRESS IN INORGANIC CHEMISTRY 2011. [DOI: 10.1002/9781118148235.ch3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
45
|
Gopakumar G, Belanzoni P, Baerends EJ. Hydroxylation catalysis by mononuclear and dinuclear iron oxo catalysts: a methane monooxygenase model system versus the Fenton reagent Fe(IV)O(H2O)5(2+). Inorg Chem 2011; 51:63-75. [PMID: 22221279 DOI: 10.1021/ic200754w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydroxylation of aliphatic C-H bonds is a chemically and biologically important reaction, which is catalyzed by the oxidoiron group FeO(2+) in both mononuclear (heme and nonheme) and dinuclear complexes. We investigate the similarities and dissimilarities of the action of the FeO(2+) group in these two configurations, using the Fenton-type reagent [FeO(2+) in a water solution, FeO(H(2)O)(5)(2+)] and a model system for the methane monooxygenase (MMO) enzyme as representatives. The high-valent iron oxo intermediate MMOH(Q) (compound Q) is regarded as the active species in methane oxidation. We show that the electronic structure of compound Q can be understood as a dimer of two Fe(IV)O(2+) units. This implies that the insights from the past years in the oxidative action of this ubiquitous moiety in oxidation catalysis can be applied immediately to MMOH(Q). Electronically the dinuclear system is not fundamentally different from the mononuclear system. However, there is an important difference of MMOH(Q) from FeO(H(2)O)(5)(2+): the largest contribution to the transition state (TS) barrier in the case of MMOH(Q) is not the activation strain (which is in this case the energy for the C-H bond lengthening to the TS value), but it is the steric hindrance of the incoming CH(4) with the ligands representing glutamate residues. The importance of the steric factor in the dinuclear system suggests that it may be exploited, through variation in the ligand framework, to build a synthetic oxidation catalyst with the desired selectivity for the methane substrate.
Collapse
Affiliation(s)
- G Gopakumar
- Theoretische Chemie, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | | | | |
Collapse
|
46
|
Zhang HX, Tsuge K, Sasaki Y, Osawa M, Abe M. Cyano- and Aqua-Coordinated Diruthenium(III) Complexes with Oxo-Bis(acetato) Bridge: Preparation and Steric and Electronic Structures. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100724] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
47
|
Radaram B, Ivie JA, Singh WM, Grudzien RM, Reibenspies JH, Webster CE, Zhao X. Water Oxidation by Mononuclear Ruthenium Complexes with TPA-Based Ligands. Inorg Chem 2011; 50:10564-71. [DOI: 10.1021/ic200050g] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Bhasker Radaram
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Jeffrey A. Ivie
- Department of Chemistry, Physics, and Astronomy, Georgia College & State University, Milledgeville, Georgia 31061, United States
| | | | - Rafal M. Grudzien
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Joseph H. Reibenspies
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Charles Edwin Webster
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Xuan Zhao
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| |
Collapse
|
48
|
Bloch ED, Murray LJ, Queen WL, Chavan S, Maximoff SN, Bigi JP, Krishna R, Peterson VK, Grandjean F, Long GJ, Smit B, Bordiga S, Brown CM, Long JR. Selective Binding of O2 over N2 in a Redox–Active Metal–Organic Framework with Open Iron(II) Coordination Sites. J Am Chem Soc 2011; 133:14814-22. [DOI: 10.1021/ja205976v] [Citation(s) in RCA: 403] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Leslie J. Murray
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Wendy L. Queen
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Sachin Chavan
- Department of Inorganic, Physical, and Materials Chemistry, NIS Centre of Excellence and INSTM Centre of Reference, University of Turin, Via Quarello 11, I-10135 Torino, Italy
| | | | | | - Rajamani Krishna
- Van’t Hoff Institute for Molecular Sciences, Univeristy of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Vanessa K. Peterson
- The Bragg Institute, Australian Nuclear Science and Technology Organisation, PMB1, Menai, NSW, Australia
| | | | - Gary J. Long
- Department of Chemistry, Missouri University of Science and Technology, University of Missouri, Rolla, Missouri 65409-0010, United States
| | | | - Silvia Bordiga
- Department of Inorganic, Physical, and Materials Chemistry, NIS Centre of Excellence and INSTM Centre of Reference, University of Turin, Via Quarello 11, I-10135 Torino, Italy
| | - Craig M. Brown
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- The Bragg Institute, Australian Nuclear Science and Technology Organisation, PMB1, Menai, NSW, Australia
| | | |
Collapse
|
49
|
Strautmann JBH, Freiherr von Richthofen CG, Heinze-Brückner G, DeBeer S, Bothe E, Bill E, Weyhermüller T, Stammler A, Bögge H, Glaser T. Molecular and Electronic Structures of Dinuclear Iron Complexes Incorporating Strongly Electron-Donating Ligands: Implications for the Generation of the One- and Two-Electron Oxidized Forms. Inorg Chem 2010; 50:155-71. [DOI: 10.1021/ic101535y] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julia B. H. Strautmann
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | | | | | - Serena DeBeer
- Cornell University, Department of Chemistry and Chemical Biology, Ithaca, New York 14853, United States
| | - Eberhard Bothe
- Max-Planck-Institut für Bioanorganische Chemie, Stiftsstrasse 34-36, D-45470 Mülheim, Germany
| | - Eckhard Bill
- Max-Planck-Institut für Bioanorganische Chemie, Stiftsstrasse 34-36, D-45470 Mülheim, Germany
| | - Thomas Weyhermüller
- Max-Planck-Institut für Bioanorganische Chemie, Stiftsstrasse 34-36, D-45470 Mülheim, Germany
| | - Anja Stammler
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Hartmut Bögge
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| | - Thorsten Glaser
- Fakultät für Chemie, Universität Bielefeld, Universitätsstrasse 25, D-33615 Bielefeld, Germany
| |
Collapse
|
50
|
Lehmann U, Klingele J, Lozan V, Steinfeld G, Klingele MH, Käss S, Rodenstein A, Kersting B. Dependence of the Chemical Properties of Macrocyclic [NiII2L(μ-O2CR)]+Complexes on the Basicity of the Carboxylato Coligands (L2−= macrocyclic N6S2ligand). Inorg Chem 2010; 49:11018-29. [DOI: 10.1021/ic101574a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ulrike Lehmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Julia Klingele
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | - Vasile Lozan
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Gunther Steinfeld
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | - Marco H. Klingele
- Institut für Anorganische und Analytische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, D-79104 Freiburg, Germany
| | - Steffen Käss
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Axel Rodenstein
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Berthold Kersting
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| |
Collapse
|