1
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Palomero OE, Jones RA. Hyperbulky 1,1’-dicarbodiimidoferrocene proligand promotes an asymmetric guanidinate coordination in a Zr(IV) complex. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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2
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Wang C, Lai Z, Huang G, Pan H. Current State of [Fe]‐Hydrogenase and Its Biomimetic Models. Chemistry 2022; 28:e202201499. [DOI: 10.1002/chem.202201499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Wang
- Chemistry and Biomedicine Innovation Center (ChemBIC) State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue 210023 Nanjing P. R. China
| | - Zhenli Lai
- Key Laboratory of Development and Application of Rural Renewable Energy Biogas Institute of Ministry of Agriculture and Rural Affairs Section 4–13, Renmin South Road 610041 Chengdu P. R. China
| | - Gangfeng Huang
- Key Laboratory of Development and Application of Rural Renewable Energy Biogas Institute of Ministry of Agriculture and Rural Affairs Section 4–13, Renmin South Road 610041 Chengdu P. R. China
| | - Hui‐Jie Pan
- Chemistry and Biomedicine Innovation Center (ChemBIC) State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue 210023 Nanjing P. R. China
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3
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Song LC, Zhang ZQ, Liu BB, Wang YP, Chen S. Biomimetic models of [Fe]-hydrogenase featuring a 2-acylphenylthiomethyl-6-R-pyridine (R = H or OMe) ligand. Chem Commun (Camb) 2022; 58:12168-12171. [DOI: 10.1039/d2cc04523k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new flexible pyridine ligand (FPL)-based method is developed, by which two novel biomimetic models of [Fe]-H2ase are prepared and their enzyme-like H2/D2 activation functions are studied.
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Affiliation(s)
- Li-Cheng Song
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhen-Qing Zhang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Bei-Bei Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Yin-Peng Wang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Shuai Chen
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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4
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Goralski ST, Rose MJ. Emerging artificial metalloenzymes for asymmetric hydrogenation reactions. Curr Opin Chem Biol 2021; 66:102096. [PMID: 34879303 DOI: 10.1016/j.cbpa.2021.102096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/24/2021] [Accepted: 10/04/2021] [Indexed: 01/26/2023]
Abstract
Artificial metalloenzymes (ArMs) utilize the best properties of homogenous transition metal catalysts and naturally occurring proteins. While synthetic metal complexes offer high tunability and broad-scope reactivity with a variety of substrates, enzymes further endow these complexes with enhanced aqueous stability and stereoselectivity. For these reasons, dozens of ArMs have been designed to perform catalytic asymmetric hydrogenation reactions, and hydrogenase ArMs are, in fact, the oldest class of ArMs. Herein, we report recent advances in the design of hydrogenase ArMs, including (i) the modification of natural [Fe]-hydrogenase by insertion of artificial metallocofactors, (ii) design of a novel ArM system from the tractable and inexpensive protein β-lactoglobulin to afford a high-performing transfer hydrogenase, and (iii) the design of chimeric streptavidin scaffolds that drastically alter the secondary coordination sphere of previously reported streptavidin/biotin transfer hydrogenase ArMs.
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Affiliation(s)
- Sean T Goralski
- Department of Chemistry, University of Texas at Austin, 105 E. 24th St. Stop A5300, Austin, TX, 78712, USA
| | - Michael J Rose
- Department of Chemistry, University of Texas at Austin, 105 E. 24th St. Stop A5300, Austin, TX, 78712, USA.
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5
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Kerns SA, Seo J, Lynch VM, Shearer J, Goralski ST, Sullivan ER, Rose MJ. Scaffold-based [Fe]-hydrogenase model: H 2 activation initiates Fe(0)-hydride extrusion and non-biomimetic hydride transfer. Chem Sci 2021; 12:12838-12846. [PMID: 34703571 PMCID: PMC8494020 DOI: 10.1039/d0sc03154b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/01/2021] [Indexed: 11/21/2022] Open
Abstract
We report the synthesis and reactivity of a model of [Fe]-hydrogenase derived from an anthracene-based scaffold that includes the endogenous, organometallic acyl(methylene) donor. In comparison to other non-scaffolded acyl-containing complexes, the complex described herein retains molecularly well-defined chemistry upon addition of multiple equivalents of exogenous base. Clean deprotonation of the acyl(methylene) C–H bond with a phenolate base results in the formation of a dimeric motif that contains a new Fe–C(methine) bond resulting from coordination of the deprotonated methylene unit to an adjacent iron center. This effective second carbanion in the ligand framework was demonstrated to drive heterolytic H2 activation across the Fe(ii) center. However, this process results in reductive elimination and liberation of the ligand to extrude a lower-valent Fe–carbonyl complex. Through a series of isotopic labelling experiments, structural characterization (XRD, XAS), and spectroscopic characterization (IR, NMR, EXAFS), a mechanistic pathway is presented for H2/hydride-induced loss of the organometallic acyl unit (i.e. pyCH2–C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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O → pyCH3+C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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O). The known reduced hydride species [HFe(CO)4]− and [HFe3(CO)11]− have been observed as products by 1H/2H NMR and IR spectroscopies, as well as independent syntheses of PNP[HFe(CO)4]. The former species (i.e. [HFe(CO)4]−) is deduced to be the actual hydride transfer agent in the hydride transfer reaction (nominally catalyzed by the title compound) to a biomimetic substrate ([TolIm](BArF) = fluorinated imidazolium as hydride acceptor). This work provides mechanistic insight into the reasons for lack of functional biomimetic behavior (hydride transfer) in acyl(methylene)pyridine based mimics of [Fe]-hydrogenase. We report the synthesis and reactivity of a model of [Fe]-hydrogenase derived from an anthracene-based scaffold that includes the endogenous, organometallic acyl(methylene) donor.![]()
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Affiliation(s)
- Spencer A Kerns
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
| | - Junhyeok Seo
- Department of Chemistry, Gwangju Institute of Science and Technology Gwangju 61005 Republic of Korea
| | - Vincent M Lynch
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
| | - Jason Shearer
- Department of Chemistry, Trinity University One Trinity Place San Antonio Texas 78212 USA
| | - Sean T Goralski
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
| | - Eileen R Sullivan
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
| | - Michael J Rose
- Department of Chemistry, The University of Texas at Austin Austin Texas 78712 USA
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6
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Brief survey of diiron and monoiron carbonyl complexes and their potentials as CO-releasing molecules (CORMs). Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213634] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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7
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Abstract
The role of deuterium in disentangling key steps of the mechanisms of H2 activation by mimics of hydrogenases is presented. These studies have allowed to a better understanding of the mode of action of the natural enzymes and their mimics.
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Affiliation(s)
- Mar Gómez-Gallego
- Departamento de Química Orgánica I and Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Facultad de Química
- Universidad Complutense
- 28040-Madrid
- Spain
| | - Miguel A. Sierra
- Departamento de Química Orgánica I and Center for Innovation in Advanced Chemistry (ORFEO-CINQA). Facultad de Química
- Universidad Complutense
- 28040-Madrid
- Spain
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8
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Barik CK, Ganguly R, Kwan JM, Lam Z, Wong SY, Leong WK. Ruthenacyclic carbamoyl mimics of the [Fe]-hydrogenase active site: Derivatisation at the 4-position of the pyridinyl ring. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Kaim V, Kaur-Ghumaan S. Mononuclear Mn complexes featuring N,S-/N,N-donor and 1,3,5-triaza-7-phosphaadamantane ligands: synthesis and electrocatalytic properties. NEW J CHEM 2021. [DOI: 10.1039/d1nj02104d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mononuclear Mn(i) carbonyl complexes incorporating 2-mercaptobenzothiazole or 2-mercaptobenzimidazole and phosphaadamantane ligands were evaluated as electrocatalysts for the HER both in acetonitrile and acetonitrile/water.
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Affiliation(s)
- Vishakha Kaim
- Department of Chemistry, University of Delhi, Delhi 110007, India
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10
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Guo Z, Jin J, Xiao Z, Chen N, Jiang X, Liu X, Wu L, He Y, Zhang S. Four iron(II) carbonyl complexes containing both pyridyl and halide ligands: Their synthesis, characterization, stability, and anticancer activity. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zhuming Guo
- College of Chemistry and Bioengineering Guilin University of Technology Guilin 541006 China
- College of Biological, Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 China
| | - Jing Jin
- Department of Urology The Affiliated Hospital of Jiaxing University Jiaxing 314001 China
| | - Zhiyin Xiao
- College of Biological, Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 China
| | - Naiwen Chen
- Department of Urology The Affiliated Hospital of Jiaxing University Jiaxing 314001 China
| | - Xiujuan Jiang
- College of Biological, Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 China
| | - Xiaoming Liu
- College of Biological, Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 China
| | - Lingfeng Wu
- Department of Urology The Affiliated Hospital of Jiaxing University Jiaxing 314001 China
| | - Yi He
- Department of Urology The Affiliated Hospital of Jiaxing University Jiaxing 314001 China
| | - Shuhua Zhang
- College of Chemistry and Bioengineering Guilin University of Technology Guilin 541006 China
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11
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Crystal Structures of [Fe]-Hydrogenase from Methanolacinia paynteri Suggest a Path of the FeGP-Cofactor Incorporation Process. INORGANICS 2020. [DOI: 10.3390/inorganics8090050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
[Fe]-hydrogenase (Hmd) catalyzes the reversible heterolytic cleavage of H2, and hydride transfer to methenyl-tetrahydromethanopterin (methenyl-H4MPT+). The iron-guanylylpyridinol (FeGP) cofactor, the prosthetic group of Hmd, can be extracted from the holoenzyme and inserted back into the protein. Here, we report the crystal structure of an asymmetric homodimer of Hmd from Methanolacinia paynteri (pHmd), which was composed of one monomer in the open conformation with the FeGP cofactor (holo-form) and a second monomer in the closed conformation without the cofactor (apo-form). In addition, we report the symmetric pHmd-homodimer structure in complex with guanosine monophosphate (GMP) or guanylylpyridinol (GP), in which each ligand was bound to the protein, where the GMP moiety of the FeGP-cofactor is bound in the holo-form. Binding of GMP and GP modified the local protein structure but did not induce the open conformation. The amino-group of the Lys150 appears to interact with the 2-hydroxy group of pyridinol ring in the pHmd–GP complex, which is not the case in the structure of the pHmd–FeGP complex. Lys150Ala mutation decreased the reconstitution rate of the active enzyme with the FeGP cofactor at the physiological pH. These results suggest that Lys150 might be involved in the FeGP-cofactor incorporation into the Hmd protein in vivo.
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12
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Barik CK, Chan XQ, Huynh HV, Li Y, Ganguly R, Leong WK. Ruthenium‐Based Structural Mimics of the Cofactor of [Fe]‐Hydrogenase: Replacement of the Acyl Moiety with an N‐Heterocyclic Carbene. ChemistrySelect 2020. [DOI: 10.1002/slct.202002889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chandan Kr Barik
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link Singapore
| | - Xian Qi Chan
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link Singapore
| | - Han Vinh Huynh
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link Singapore
| | - Rakesh Ganguly
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link Singapore
- Shiv Nadar University NH-91 Tehsil Dadri Gautam Buddha Nagar Uttar Pradesh 201314 India
| | - Weng Kee Leong
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link Singapore
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13
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Kerns SA, Rose MJ. Scaffold-Based Functional Models of [Fe]-Hydrogenase (Hmd): Building the Bridge between Biological Structure and Molecular Function. Acc Chem Res 2020; 53:1637-1647. [PMID: 32786339 DOI: 10.1021/acs.accounts.0c00315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The well-known dinuclear [FeFe] and [NiFe] hydrogenase enzymes are redox-based proton reduction and H2 oxidation catalysts. In comparison, the structural and functional aspects of the mononuclear nonredox hydrogenase, known as [Fe]-hydrogenase or Hmd, have been less explored because of the relatively recent crystallographic elucidation of the enzyme active site. Additionally, the synthetic challenges posed by the highly substituted and asymmetric coordination environment of the iron guanylylpyridinol (FeGP) cofactor have hampered functional biomimetic modeling studies to a large extent. The active site contains an octahedral low-spin Fe(II) center with the following coordination motifs: a bidentate acyl-pyridone moiety (C,N) and cysteinyl-S in a facial arrangement; two cis carbonyl ligands; and a H2O/H2 binding site. In [Fe]-hydrogenase, heterolytic H2 activation putatively by the pendant pyridone/pyridonate-O base serving as a proton acceptor. Following H2 cleavage, an intermediate Fe-H species is thought to stereoselectively transfer a hydride to the substrate methenyl-H4MPT+, thus forming methylene-H4MPT. In the past decade, chemists, inspired by the elegant organometallic chemistry inherent to the FeGP cofactor, have synthesized a number of faithful structural models. However, functional systems are still relatively limited and often rely on abiological ligands or metal centers that obfuscate a direct correlation to nature's design.Our group has developed a bioinspired suite of synthetic analogues of Hmd to better understand the effects of structure on the stability and functionality of the Hmd active site, with a special emphasis on using a scaffold-based ligand design. This systematic approach has contributed to a deeper understanding of the unique ligand array of [Fe]-hydrogenase in nature and has ultimately resulted in the first functional synthetic models without the aid of abiological ligands. This Account reviews the reactivity of the functional anthracene-scaffolded synthetic models developed by our group in the context of current mechanistic understanding drawn from both protein crystallography and computational studies. Furthermore, we introduce a novel thermodynamic framework to place the reactivity of our model systems in context and provide an outlook on the future study of [Fe]-hydrogenase synthetic models through both a structural and functional lens.
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Affiliation(s)
- Spencer A. Kerns
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Michael J. Rose
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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14
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Song L, Liu B, Xu K. Synthetic and Structural Studies on a New Type of [Fe]‐Hydrogenase Mimics Each Containing One Hantzsch Ester Moiety. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Li‐Cheng Song
- Department of Chemistry State Key Laboratory of Elemento‐Organic Chemistry Nankai University 300071 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) 300072 Tianjin China
| | - Bei‐Bei Liu
- Department of Chemistry State Key Laboratory of Elemento‐Organic Chemistry Nankai University 300071 Tianjin China
| | - Kai‐Kai Xu
- Department of Chemistry State Key Laboratory of Elemento‐Organic Chemistry Nankai University 300071 Tianjin China
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15
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Pan HJ, Hu X. Biomimetic Hydrogenation Catalyzed by a Manganese Model of [Fe]-Hydrogenase. Angew Chem Int Ed Engl 2020; 59:4942-4946. [PMID: 31820844 DOI: 10.1002/anie.201914377] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Indexed: 12/16/2022]
Abstract
[Fe]-hydrogenase is an efficient biological hydrogenation catalyst. Despite intense research, Fe complexes mimicking the active site of [Fe]-hydrogenase have not achieved turnovers in hydrogenation reactions. Herein, we describe the design and development of a manganese(I) mimic of [Fe]-hydrogenase. This complex exhibits the highest activity and broadest scope in catalytic hydrogenation among known mimics. Thanks to its biomimetic nature, the complex exhibits unique activity in the hydrogenation of compounds analogous to methenyl-H4 MPT+ , the natural substrate of [Fe]-hydrogenase. This activity enables asymmetric relay hydrogenation of benzoxazinones and benzoxazines, involving the hydrogenation of a chiral hydride transfer agent using our catalyst coupled to Lewis acid-catalyzed hydride transfer from this agent to the substrates.
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Affiliation(s)
- Hui-Jie Pan
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305, Lausanne, 1015, Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, BCH 3305, Lausanne, 1015, Switzerland
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16
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Tang H, Brothers EN, Grapperhaus CA, Hall MB. Electrocatalytic Hydrogen Evolution and Oxidation with Rhenium Tris(thiolate) Complexes: A Competition between Rhenium and Sulfur for Electrons and Protons. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04579] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hao Tang
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
| | | | - Craig A. Grapperhaus
- Department of Chemistry, University of Louisville, 2320 South Brook Street, Louisville, Kentucky 40292, United States
| | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
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17
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Methanogenesis involves direct hydride transfer from H2 to an organic substrate. Nat Rev Chem 2020; 4:213-221. [PMID: 37128042 DOI: 10.1038/s41570-020-0167-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2020] [Indexed: 01/02/2023]
Abstract
Certain anaerobic microorganisms evolved a mechanism to use H2 as a reductant in their energy metabolisms. For these purposes, the microorganisms developed H2-activating enzymes, which are aspirational catalysts in a sustainable hydrogen economy. In the case of the hydrogenotrophic pathway performed by methanogenic archaea, 8e- are extracted from 4H2 and used as reducing equivalents to convert CO2 into CH4. Under standard cultivation conditions, these archaea express [NiFe]-hydrogenases, which are Ni-dependent and Fe-dependent enzymes and heterolytically cleave H2 into 2H+ and 2e-, the latter being supplied into the central metabolism. Under Ni-limiting conditions, F420-reducing [NiFe]-hydrogenases are downregulated and their functions are predominantly taken over by an upregulated [Fe]-hydrogenase. Unique in biology, this Fe-dependent hydrogenase cleaves H2 and directly transfers H- to an imidazolium-containing substrate. [Fe]-hydrogenase activates H2 at an Fe cofactor ligated by two CO molecules, an acyl group, a pyridinol N atom and a cysteine thiolate as the central constituent. This Fe centre has inspired chemists to not only design synthetic mimics to catalytically cleave H2 in solution but also for incorporation into apo-[Fe]-hydrogenase to give semi-synthetic proteins. This Perspective describes the enzymes involved in hydrogenotrophic methanogenesis, with a focus on those performing the reduction steps. Of these, we describe [Fe]-hydrogenases in detail and cover recent progress in their synthetic modelling.
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18
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Xie ZL, Chai W, Kerns SA, Henkelman GA, Rose MJ. Bioinspired CNP Iron(II) Pincers Relevant to [Fe]-Hydrogenase (Hmd): Effect of Dicarbonyl versus Monocarbonyl Motifs in H 2 Activation and Transfer Hydrogenation. Inorg Chem 2020; 59:2548-2561. [DOI: 10.1021/acs.inorgchem.9b03476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhu-Lin Xie
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Wenrui Chai
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Spencer A. Kerns
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Graeme A. Henkelman
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Michael J. Rose
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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19
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Pan H, Hu X. Biomimetic Hydrogenation Catalyzed by a Manganese Model of [Fe]‐Hydrogenase. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914377] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hui‐Jie Pan
- Laboratory of Inorganic Synthesis and CatalysisInstitute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI BCH 3305 Lausanne 1015 Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and CatalysisInstitute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI BCH 3305 Lausanne 1015 Switzerland
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20
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Tong L, Duan L, Zhou A, Thummel RP. First-row transition metal polypyridine complexes that catalyze proton to hydrogen reduction. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213079] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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21
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Song LC, Zhu L, Liu BB. A Biomimetic Model for the Active Site of [Fe]-H 2ase Featuring a 2-Methoxy-3,5-dimethyl-4-phosphato-6-acylmethylpyridine Ligand. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Cheng Song
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Liang Zhu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Bei-Bei Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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22
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Cho YI, Durgaprasad G, Rose MJ. CNS and CNP Iron(II) Mono-Iron Hydrogenase (Hmd) Mimics: Role of Deprotonated Methylene(acyl) and the trans-Acyl Site in H 2 Heterolysis. Inorg Chem 2019; 58:12689-12699. [PMID: 31497945 DOI: 10.1021/acs.inorgchem.9b01530] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report syntheses and H2 activation involving model complexes of mono-iron hydrogenase (Hmd) derived from acyl-containing pincer ligand precursors bearing thioether (CNSPre) or phosphine (CNPPre) donor sets. Both complexes feature pseudo-octahedral iron(II) dicarbonyl units. While the CNS pincer adopts the expected mer-CNS (pincer) geometry, the CNP ligand unexpectedly adopts the fac-CNP coordination geometry. Both complexes exhibit surprisingly acidic methylene C-H bond (reversibly de/protonated by a bulky phenolate), which affords a putative dearomatized pyridinate-bound intermediate. Such base treatment of Fe-CNS also results in deligation of the thioether sulfur donor, generating an open coordination site trans from the acyl unit. In contrast, Fe-CNP maintains a CO ligand trans from the acyl site both in the parent and dearomatized complexes (the -PPh2 donor is cis to acyl). The dearomatized mer-Fe-CNS was competent for H2 activation (5 atm D2(g) plus phenolate as base), which is attributed to both the basic site on the ligand framework and the open coordination site trans to the acyl donor. In contrast, the dearomatized fac-Fe-CNP was not competent for H2 activation, which is ascribed to the blocked coordination site trans from acyl (occupied by CO ligand). These results highlight the importance of both (i) the open coordination site trans to the organometallic acyl donor and (ii) a pendant base in the enzyme active site.
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Affiliation(s)
- Yae In Cho
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Gummadi Durgaprasad
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Michael J Rose
- Department of Chemistry , The University of Texas at Austin , Austin , Texas 78712 , United States
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23
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Barik CK, Ganguly R, Li Y, Leong WK. Very strong trans effect in ruthenacyclic carbamoyl complexes leads to ligand redistribution in phosphine derivatives. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Barik CK, Ganguly R, Li Y, Leong WK. Ruthenacyclic Carbamoyl Complexes: Highly Efficient Catalysts for Organosilane Hydrolysis. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chandan Kr Barik
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Rakesh Ganguly
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Weng Kee Leong
- Division of Chemistry & Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
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25
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Klug CM, Dougherty WG, Kassel WS, Wiedner ES. Electrocatalytic Hydrogen Production by a Nickel Complex Containing a Tetradentate Phosphine Ligand. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00548] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Christina M. Klug
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - William G. Dougherty
- Department of Chemistry, Villanova University, 800 East Lancaster Avenue, Villanova, Pennsylvania 19085, United States
| | - W. Scott Kassel
- Department of Chemistry, Villanova University, 800 East Lancaster Avenue, Villanova, Pennsylvania 19085, United States
| | - Eric S. Wiedner
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
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26
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Zhang X, Zhang T, Li Y, Li B, Jiang S, Zhang G, Hai L, Ma X, Wu W, Wang J. Catalytic property of [FeFe]-hydrogenase model complex: [(μ-dmedt)Fe2(CO)5](μ-DPPF-O) (DPPF = 1,1′-bis(diphenylphosph ino)ferrocene) for the selective phenol hydroxylation. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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27
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Barik CK, Ganguly R, Li Y, Przybylski C, Salmain M, Leong WK. Embedding a Ruthenium-Based Structural Mimic of the [Fe]-Hydrogenase Cofactor into Papain. Inorg Chem 2018; 57:12206-12212. [PMID: 30198260 DOI: 10.1021/acs.inorgchem.8b01835] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the synthesis of the ruthenacyclic carbamoyl complexes [Ru(2-NHC(O)C5H3NMe)(CO)2( o,o-Me2-C6H3S)(L)] (L = H2O or MeCN), which have a labile water or acetonitrile ligand at their sixth coordination sites. Steric bulk around the ruthenium center is essential in preventing isomerization and dimerization, and embedding within papain can be achieved via coordination of its sole free cysteine residue. The observed chemistry parallels that of the natural [Fe]-hydrogenase.
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Affiliation(s)
- Chandan Kr Barik
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Rakesh Ganguly
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
| | - Cédric Przybylski
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire (IPCM) , 4 place Jussieu , F-75005 Paris , France
| | - Michèle Salmain
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire (IPCM) , 4 place Jussieu , F-75005 Paris , France
| | - Weng Kee Leong
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore 637371 , Singapore
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28
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Chu KT, Liu YC, Chung MW, Poerwoprajitno AR, Lee GH, Chiang MH. Energy-Efficient Hydrogen Evolution by Fe-S Electrocatalysts: Mechanistic Investigations. Inorg Chem 2018; 57:7620-7630. [PMID: 29893554 DOI: 10.1021/acs.inorgchem.8b00543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The intrinsic catalytic property of a Fe-S complex toward H2 evolution was investigated in a wide range of acids. The title complex exhibited catalytic events at -1.16 and -1.57 V (vs Fc+/Fc) in the presence of trifluoromethanesulfonic acid (HOTf) and trifluoroacetic acid (TFA), respectively. The processes corresponded to the single reduction of the Fe-hydride-S-proton and Fe-hydride species, respectively. When anilinium acid was used, the catalysis occurred at -1.16 V, identical with the working potential of the HOTf catalysis, although the employment of anilinium acid was only capable of achieving the Fe-hydride state on the basis of the spectral and calculated results. The thermodynamics and kinetics of individual steps of the catalysis were analyzed by density functional theory (DFT) calculations and electroanalytical simulations. The stepwise CCE or CE (C, chemical; E, electrochemical) mechanism was operative from the HOTf or TFA source, respectively. In contrast, the involvement of anilinium acid most likely initiated a proton-coupled electron transfer (PCET) pathway that avoided the disfavored intermediate after the initial protonation. Via the PCET pathway, the heterogeneous electron transfer rate was increased and the overpotential was decreased by 0.4 V in comparison with the stepwise pathways. The results showed that the PCET-involved catalysis exhibited substantial kinetic and thermodynamic advantages in comparison to the stepwise pathway; thus, an efficient catalytic system for proton reduction was established.
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Affiliation(s)
- Kai-Ti Chu
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 115 , Taiwan
| | - Yu-Chiao Liu
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 115 , Taiwan
| | - Min-Wen Chung
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 115 , Taiwan
| | | | - Gene-Hsiang Lee
- Instrumentation Center , National Taiwan University , Taipei 106 , Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 115 , Taiwan
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29
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Barik CK, Ganguly R, Li Y, Leong WK. Structural Mimics of the [Fe]-Hydrogenase: A Complete Set for Group VIII Metals. Inorg Chem 2018; 57:7113-7120. [PMID: 29799728 DOI: 10.1021/acs.inorgchem.8b00838] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A set of structural mimics of the [Fe]-hydrogenase active site comprising all the group VIII metals, viz., [M(2-NHC(O)C5H4N)(CO)2(2-S-C5H4N)], has been synthesized. They exist as a mixture of isomers in solution, and the relative stability of the isomers depends on the nature of the metal and the substituent at the 6-position of the pyridine ligand.
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Affiliation(s)
- Chandan Kr Barik
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore , 637371
| | - Rakesh Ganguly
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore , 637371
| | - Yongxin Li
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore , 637371
| | - Weng Kee Leong
- Division of Chemistry & Biological Chemistry , Nanyang Technological University , 21 Nanyang Link , Singapore , 637371
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30
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Huang X, Xu Y, Fan K, Bao S, Kurmoo M, Zheng L. Reversible SC‐SC Transformation involving [4+4] Cycloaddition of Anthracene: A Single‐Ion to Single‐Molecule Magnet and Yellow‐Green to Blue‐White Emission. Angew Chem Int Ed Engl 2018; 57:8577-8581. [DOI: 10.1002/anie.201804102] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Xin‐Da Huang
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Yan Xu
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Kun Fan
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Song‐Song Bao
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Mohamedally Kurmoo
- Institut de Chimie Universite de Strasbourg, CNRS-UMR7177 4 rue Blaise Pascal Strasbourg Cedex 67007 France
| | - Li‐Min Zheng
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
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31
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Huang X, Xu Y, Fan K, Bao S, Kurmoo M, Zheng L. Reversible SC‐SC Transformation involving [4+4] Cycloaddition of Anthracene: A Single‐Ion to Single‐Molecule Magnet and Yellow‐Green to Blue‐White Emission. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xin‐Da Huang
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Yan Xu
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Kun Fan
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Song‐Song Bao
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
| | - Mohamedally Kurmoo
- Institut de Chimie Universite de Strasbourg, CNRS-UMR7177 4 rue Blaise Pascal Strasbourg Cedex 67007 France
| | - Li‐Min Zheng
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P. R. China
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32
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Kerns SA, Magtaan AC, Vong PR, Rose MJ. Functional Hydride Transfer by a Thiolate-Containing Model of Mono-Iron Hydrogenase featuring an Anthracene Scaffold. Angew Chem Int Ed Engl 2018; 57:2855-2858. [DOI: 10.1002/anie.201712948] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Spencer A. Kerns
- Department of Chemistry; The University of Texas at Austin; Austin TX 78712 USA
| | | | - Pisey R. Vong
- Department of Chemistry; The University of Texas at Austin; Austin TX 78712 USA
| | - Michael J. Rose
- Department of Chemistry; The University of Texas at Austin; Austin TX 78712 USA
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33
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Kerns SA, Magtaan AC, Vong PR, Rose MJ. Functional Hydride Transfer by a Thiolate-Containing Model of Mono-Iron Hydrogenase featuring an Anthracene Scaffold. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712948] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Spencer A. Kerns
- Department of Chemistry; The University of Texas at Austin; Austin TX 78712 USA
| | | | - Pisey R. Vong
- Department of Chemistry; The University of Texas at Austin; Austin TX 78712 USA
| | - Michael J. Rose
- Department of Chemistry; The University of Texas at Austin; Austin TX 78712 USA
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34
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Fukuzumi S, Lee YM, Nam W. Thermal and photocatalytic production of hydrogen with earth-abundant metal complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.07.014] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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35
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Tang H, Hall MB. Biomimetics of [NiFe]-Hydrogenase: Nickel- or Iron-Centered Proton Reduction Catalysis? J Am Chem Soc 2017; 139:18065-18070. [DOI: 10.1021/jacs.7b10425] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hao Tang
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
| | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
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36
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Rigid scaffolds for the design of molecular catalysts and biomimetic active sites: A case study of anthracene-based ligands for modeling mono-iron hydrogenase (Hmd). Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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37
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Song LC, Zhu L, Hu FQ, Wang YX. Studies on Chemical Reactivity and Electrocatalysis of Two Acylmethyl(hydroxymethyl)pyridine Ligand-Containing [Fe]-Hydrogenase Models (2-COCH2-6-HOCH2C5H3N)Fe(CO)2L (L = η1-SCOMe, η1-2-SC5H4N). Inorg Chem 2017; 56:15216-15230. [DOI: 10.1021/acs.inorgchem.7b02582] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li-Cheng Song
- Department
of Chemistry, State Key Laboratory of Elemento-Organic Chemistry,
College of Chemistry, and ‡Collaborative Innovation Center of Chemical Science
and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Liang Zhu
- Department
of Chemistry, State Key Laboratory of Elemento-Organic Chemistry,
College of Chemistry, and ‡Collaborative Innovation Center of Chemical Science
and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Fu-Qiang Hu
- Department
of Chemistry, State Key Laboratory of Elemento-Organic Chemistry,
College of Chemistry, and ‡Collaborative Innovation Center of Chemical Science
and Engineering (Tianjin), Nankai University, Tianjin 300071, China
| | - Yong-Xiang Wang
- Department
of Chemistry, State Key Laboratory of Elemento-Organic Chemistry,
College of Chemistry, and ‡Collaborative Innovation Center of Chemical Science
and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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38
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Shi J, Shang S, Hu B, Chen D. Ruthenium NNN complexes with a 2‐hydroxypyridylmethylene fragment for transfer hydrogenation of ketones. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4100] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jing Shi
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Shu Shang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Bowen Hu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
| | - Dafa Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 China
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39
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Hatazawa M, Yoshie N, Seino H. Reversible Hydride Transfer to N,N'-Diarylimidazolinium Cations from Hydrogen Catalyzed by Transition Metal Complexes Mimicking the Reaction of [Fe]-Hydrogenase. Inorg Chem 2017; 56:8087-8099. [PMID: 28654277 DOI: 10.1021/acs.inorgchem.7b00806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Fe]-hydrogenase is a key enzyme involved in methanogenesis and facilitates reversible hydride transfer from H2 to N5,N10-methenyltetrahydromethanopterin (CH-H4MPT+). In this study, a reaction system was developed to model the enzymatic function of [Fe]-hydrogenase by using N,N'-diphenylimidazolinium cation (1+) as a structurally related alternative to CH-H4MPT+. In connection with the enzymatic mechanism via heterolytic cleavage of H2 at the single metal active site, several transition metal complex catalysts capable of such activation were utilized in the model system. Reduction of 1[BF4] to N,N'-diphenylimidazolidine (2) was achieved under 1 atm H2 at ambient temperature in the presence of an equimolar amount of NEt3 as a proton acceptor. The proposed catalytic pathways involved the generation of active hydride complexes and subsequent intermolecular hydride transfer to 1+. The reverse reaction was accomplished by treatment of 2 with HNMe2Ph+ as the proton source, where [(η5-C5Me5)Ir{(p-MeC6H4SO2)NCHPhCHPhNH}] was found to catalyze the formation of 1+ and H2 with high efficiency. These results are consistent with the fact that use of 2,6-lutidine in the forward reaction or 2,6-lutidinium in the reverse reaction resulted in incomplete conversion. By combining these reactions using the above Ir amido catalyst, the reversible hydride transfer interconverting 1+/H2 and 2/H+ was performed successfully. This system demonstrated the hydride-accepting and hydride-donating modes of biologically relevant N-heterocycles coupled with proton concentration. The influence of substituents on the forward and reverse reactivities was examined for the derivatives of 1+ and 2 bearing one para-substituted N-phenyl group.
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Affiliation(s)
- Masahiro Hatazawa
- Institute of Industrial Science, The University of Tokyo , Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Naoko Yoshie
- Institute of Industrial Science, The University of Tokyo , Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Hidetake Seino
- Faculty of Education and Human Studies, Akita University , Tegata-Gakuenmachi, Akita 010-8502, Japan
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40
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Rasheed OK, McDouall JJW, Muryn CA, Raftery J, Vitorica-Yrezabal IJ, Quayle P. The assembly of “S3N”-ligands decorated with an azo-dye as potential sensors for heavy metal ions. Dalton Trans 2017; 46:5229-5239. [DOI: 10.1039/c7dt00569e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The synthesis and complexation of azo dye-S3N crown conjugates with Ag(i), Cu(ii) and Hg(ii) is described.
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Affiliation(s)
- O. K. Rasheed
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | | | - C. A. Muryn
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | - J. Raftery
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | | | - P. Quayle
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
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41
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Xie ZL, Durgaprasad G, Ali AK, Rose MJ. Substitution reactions of iron(ii) carbamoyl-thioether complexes related to mono-iron hydrogenase. Dalton Trans 2017; 46:10814-10829. [DOI: 10.1039/c7dt01696d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A C,N,S pincer complex has been synthesized for structural modeling of the organometallic active site of mono-[Fe] hydrogenase (HMD).
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Affiliation(s)
- Zhu-Lin Xie
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | | | - Azim K. Ali
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Michael J. Rose
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
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42
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Chen J, Zhang Z, Wang C, Gao Z, Gao Z, Wang F. Cooperative self-assembly and gelation of organogold(i) complexes via hydrogen bonding and aurophilic Au⋯Au interactions. Chem Commun (Camb) 2017; 53:11552-11555. [DOI: 10.1039/c7cc05613c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Organogold(i)-based fibers and gels have been successfully constructed, which involve Au⋯Au interactions in the self-assembled structures.
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Affiliation(s)
- Jiangjun Chen
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Zhongxin Zhang
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Chengming Wang
- Hefei National Laboratory for Physical Sciences at the Microscale
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Zhao Gao
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Zongchun Gao
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
| | - Feng Wang
- Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
- China
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