1
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Bauer N, Yuan Z, Yang X, Wang B. Plight of CORMs: The unreliability of four commercially available CO-releasing molecules, CORM-2, CORM-3, CORM-A1, and CORM-401, in studying CO biology. Biochem Pharmacol 2023; 214:115642. [PMID: 37321416 PMCID: PMC10529722 DOI: 10.1016/j.bcp.2023.115642] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Abstract
Carbon monoxide (CO) is an endogenously produced gaseous signaling molecule with demonstrated pharmacological effects. In studying CO biology, three delivery forms have been used: CO gas, CO in solution, and CO donors of various types. Among the CO donors, four carbonyl complexes with either a transition metal ion or borane (BH3) (termed CO-releasing molecules or CORMs) have played the most prominent roles appearing in over 650 publications. These are CORM-2, CORM-3, CORM-A1, and CORM-401. Intriguingly, there have been unique biology findings that were only observed with these CORMs, but not CO gas; yet these properties were often attributed to CO, raising puzzling questions as to why CO source would make such a fundamental difference in terms of CO biology. Recent years have seen a large number of reports of chemical reactivity (e.g., catalase-like activity, reaction with thiol, and reduction of NAD(P)+) and demonstrated CO-independent biological activity for these four CORMs. Further, CORM-A1 releases CO in an idiosyncratic fashion; CO release from CORM-401 is strongly influenced or even dependent on reaction with an oxidant and/or a nucleophile; CORM-2 mostly releases CO2, not CO, after a water-gas shift reaction except in the presence of a strong nucleophile; and CORM-3 does not release CO except in the presence of a strong nucleophile. All these beg the question as to what constitutes an appropriate CO donor for studying CO biology. This review critically summarizes literature findings related to these aspects, with the aim of helping result interpretation when using these CORMs and development of essential criteria for an appropriate donor for studying CO biology.
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Affiliation(s)
- Nicola Bauer
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Zhengnan Yuan
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
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2
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Luo J, Liang Y, Montag M, Diskin-Posner Y, Avram L, Milstein D. Controlled Selectivity through Reversible Inhibition of the Catalyst: Stereodivergent Semihydrogenation of Alkynes. J Am Chem Soc 2022; 144:13266-13275. [PMID: 35839274 PMCID: PMC9374179 DOI: 10.1021/jacs.2c04233] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Catalytic semihydrogenation of internal alkynes using H2 is an attractive atom-economical route to various alkenes, and its stereocontrol has received widespread attention, both in homogeneous and heterogeneous catalyses. Herein, a novel strategy is introduced, whereby a poisoning catalytic thiol is employed as a reversible inhibitor of a ruthenium catalyst, resulting in a controllable H2-based semihydrogenation of internal alkynes. Both (E)- and (Z)-alkenes were obtained efficiently and highly selectively, under very mild conditions, using a single homogeneous acridine-based ruthenium pincer catalyst. Mechanistic studies indicate that the (Z)-alkene is the reaction intermediate leading to the (E)-alkene and that the addition of a catalytic amount of bidentate thiol impedes the Z/E isomerization step by forming stable ruthenium thiol(ate) complexes, while still allowing the main hydrogenation reaction to proceed. Thus, the absence or presence of catalytic thiol controls the stereoselectivity of this alkyne semihydrogenation, affording either the (E)-isomer as the final product or halting the reaction at the (Z)-intermediate. The developed system, which is also applied to the controllable isomerization of a terminal alkene, demonstrates how metal catalysis with switchable selectivity can be achieved by reversible inhibition of the catalyst with a simple auxiliary additive.
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Affiliation(s)
- Jie Luo
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yaoyu Liang
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Michael Montag
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yael Diskin-Posner
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Liat Avram
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - David Milstein
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 76100, Israel
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3
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Stoffel JT, Riordan KT, Tsui EY. Accelerated reduction and solubilization of elemental sulfur by 1,2-aminothiols. Chem Commun (Camb) 2021; 57:12488-12491. [PMID: 34747957 DOI: 10.1039/d1cc05242j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Nucleophilic 1,2-aminothiol compounds readily reduce typically-insoluble elemental sulfur to polysulfides in both water and nonpolar organic solvents. The resulting anionic polysulfide species are stabilized through hydrogen-bonding interactions with the proximal amine moieties. These interactions can facilitate sulfur transfer to alkenes.
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Affiliation(s)
- Jonathan T Stoffel
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA.
| | - Kimberly T Riordan
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA.
| | - Emily Y Tsui
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA.
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4
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Raynaud C, Norbert-Agaisse E, James BR, Eisenstein O. 31P Chemical Shifts in Ru(II) Phosphine Complexes. A Computational Study of the Influence of the Coordination Sphere. Inorg Chem 2020; 59:17038-17048. [PMID: 33156986 DOI: 10.1021/acs.inorgchem.0c02256] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The NMR chemical shift has been the most versatile marker of chemical structures, by reflecting global and local electronic structures, and is very sensitive to any change within the chemical species. In this work, Ru(II) complexes with the same five ligands and a variable sixth ligand L (none, H2O, H2S, CH3SH, H2, N2, N2O, NO+, C═CHPh, and CO) are studied by using as the NMR reporter the phosphorus PA of a coordinated bidentate PA-N ligand (PA-N = o-diphenylphosphino-N,N'-dimethylaniline). The chemical shift of PA in RuCl2(PA-N)(PR3)(L) (R = phenyl, p-tolyl, or p-FC6H4) was shown to increase as the Ru-PA bond distance decreases, an observation that was not rationalized. This work, using density functional theory (DFT) calculations, reproduces reasonably well the observed 31P chemical shifts for these complexes and the correlation between the shifts and the Ru-PA bond distance as L varies. An interpretation of this correlation is proposed by using a natural chemical shift (NCS) analysis based on the natural bonding orbital (NBO) method. This analysis of the principal components of the chemical shift tensors shows how the σ-donating properties of L have a particularly high influence on the phosphine chemical shifts.
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Affiliation(s)
| | | | - Brian R James
- Department of Chemistry, University of Vancouver, Vancouver, BC V6T 1Z1, Canada
| | - Odile Eisenstein
- ICGM, Université de Montpellier, CNRS, ENSCM, Montpellier 34095, France.,Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, Oslo 0315, Norway
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5
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Wang L, Gennari M, Cantú Reinhard FG, Gutiérrez J, Morozan A, Philouze C, Demeshko S, Artero V, Meyer F, de Visser SP, Duboc C. A Non-Heme Diiron Complex for (Electro)catalytic Reduction of Dioxygen: Tuning the Selectivity through Electron Delivery. J Am Chem Soc 2019; 141:8244-8253. [DOI: 10.1021/jacs.9b02011] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Lianke Wang
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Marcello Gennari
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Fabián G. Cantú Reinhard
- Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Javier Gutiérrez
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Adina Morozan
- Université Grenoble Alpes, CNRS, CEA, Laboratoire de Chimie et
Biologie des Métaux, F-38000 Grenoble, France
| | | | - Serhiy Demeshko
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Vincent Artero
- Université Grenoble Alpes, CNRS, CEA, Laboratoire de Chimie et
Biologie des Métaux, F-38000 Grenoble, France
| | - Franc Meyer
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sam P. de Visser
- Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Carole Duboc
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
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6
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Dance I. How feasible is the reversible S-dissociation mechanism for the activation of FeMo-co, the catalytic site of nitrogenase? Dalton Trans 2019; 48:1251-1262. [PMID: 30607401 DOI: 10.1039/c8dt04531c] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The active site of the enzyme nitrogenase (N2→ NH3) is a Fe7MoS9C cluster that contains three doubly-bridging μ-S atoms around a central belt. A vanadium nitrogenase variant has a slightly different cluster, containing two μ-S atoms. Recent crystal structures have revealed substitution of one μ-S (S2B, bridging Fe2 and Fe6), by CO in Mo-nitrogenase and an uncertain light atom in V-nitrogenase. These systems retained catalytic activity, and were able to recover the lost μ-S atom. Electron density attributed to the dissociated S is displaced by 7 Å in the crystal structure of the non-standard V-protein. The hypothesis arising from these observations is that the chemical mechanism of nitrogenase involves reversible dissociation of S2B, leaving Fe2 and Fe6 seriously under-coordinated and reactive in trapping N2 and binding reaction intermediates. Accumulated experimental evidence points to the Fe2-S2B-Fe6 domain as the centre of catalytic hydrogenation of N2. Using DFT simulations of a large model (>488 atoms) containing all relevant surrounding protein residues, I have investigated the chemical steps that could allow dissociation of S2B. The participation of H atoms is crucial, as is involvement of the nearby side chain of His195 that can function as proton donor to S2B and hydrogen-bonding supporter of displaced S2B. A significant result is that after ingress and binding of N2 at Fe2 the breaking of the Fe2-S2B bond can be strongly exergonic with negligible kinetic barrier. Subsequent extension of the Fe6-S2B bond and dissociation as H2S (or SH-) is endergonic by 20-25 kcal mol-1, partly because the separating H2S is restricted by surrounding amino-acids. I present a number of reaction sequences and energy landscapes, and derive thirteen chemical principles relevant to the postulated S-dissociation mechanism. A key conclusion is that unhooking of S2BH or S2BH2 from Fe2 is favourable, likely, and propitious for subsequent H transfer to bound N2 or reaction intermediates. The space between Fe2 and Fe6 supports two bridging ligands, and another H atom on Fe6 can move without kinetic barrier to occupy the bridging position vacated by S2B.
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Affiliation(s)
- Ian Dance
- School of Chemistry, UNSW Sydney, Sydney 2000, Australia.
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7
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Weak coordination of H2S to the solid-state ferrous porphyrin complexes with diatomic molecules. Characterization of 6-coordinate adducts at low temperature. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Anding BJ, Dairo TO, Woo LK. Reactivity Comparison of Primary Aromatic Amines and Thiols in E–H Insertion Reactions with Diazoacetates Catalyzed by Iridium(III) Tetratolylporphyrin. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00185] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bernie J. Anding
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011-1021, United States
| | - Taiwo O. Dairo
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011-1021, United States
| | - L. Keith Woo
- Department of Chemistry, Iowa State University, 1605 Gilman Hall, 2415 Osborn Drive, Ames, Iowa 50011-1021, United States
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9
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da Silva JP, Fagundes FD, Back DF, Ellena J, James BR, de Araujo MP. Studies on the Ru(II) monocationic complexes [RuCl2(NO)(P–N)(PR3)]PF6, where P–N =o-diphenylphosphino-N,N-dimethylaniline, and R = Ph and p-X-C6H4 (X = OMe, Me, F). Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2015.11.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Meininger DJ, Chee-Garza M, Arman HD, Tonzetich ZJ. Gallium(III) Tetraphenylporphyrinates Containing Hydrosulfide and Thiolate Ligands: Structural Models for Sulfur-Bound Iron(III) Hemes. Inorg Chem 2016; 55:2421-6. [DOI: 10.1021/acs.inorgchem.5b02822] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Daniel J. Meininger
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio Texas 78249, United States
| | - Max Chee-Garza
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio Texas 78249, United States
| | - Hadi D. Arman
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio Texas 78249, United States
| | - Zachary J. Tonzetich
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio Texas 78249, United States
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11
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Seixas JD, Chaves-Ferreira M, Montes-Grajales D, Gonçalves AM, Marques AR, Saraiva LM, Olivero-Verbel J, Romão CC, Bernardes GJL. An N-Acetyl Cysteine Ruthenium Tricarbonyl Conjugate Enables Simultaneous Release of CO and Ablation of Reactive Oxygen Species. Chemistry 2015; 21:14708-12. [PMID: 26316066 PMCID: PMC4641457 DOI: 10.1002/chem.201502474] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Indexed: 12/27/2022]
Abstract
We have designed and synthesised a [Ru(CO)3 Cl2 (NAC)] pro-drug that features an N-acetyl cysteine (NAC) ligand. This NAC carbon monoxide releasing molecule (CORM) conjugate is able to simultaneously release biologically active CO and to ablate the concurrent formation of reactive oxygen species (ROS). Complexes of the general formulae [Ru(CO)3 (L)3 ](2+) , including [Ru(CO)3 Cl(glycinate)] (CORM-3), have been shown to produce ROS through a water-gas shift reaction, which contributes significantly, for example, to their antibacterial activity. In contrast, NAC-CORM conjugates do not produce ROS or possess antibacterial activity. In addition, we demonstrate the synergistic effect of CO and NAC both for the inhibition of nitric oxide (formation) and in the expression of tumour-necrosis factor (TNF)-α. This work highlights the advantages of combining a CO-releasing scaffold with the anti-oxidant and anti-inflammatory drug NAC in a unique pro-drug.
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Affiliation(s)
- João D Seixas
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa (Portugal) www.gbernardes-lab.com.,Instituto de Tecnologia Química e Biológica-António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157 Oeiras (Portugal).,Alfama Ltd., Instituto de Biologia Experimental e Tecnológica, IBET, Av. da República, EAN, 2780-157 Oeiras (Portugal)
| | - Miguel Chaves-Ferreira
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa (Portugal) www.gbernardes-lab.com
| | - Diana Montes-Grajales
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge (UK).,School of Pharmaceutical Sciences, University of Cartagena, Campus of Zaragocilla, Cartagena, Bolivar 130015 (Colombia)
| | - Ana M Gonçalves
- Alfama Ltd., Instituto de Biologia Experimental e Tecnológica, IBET, Av. da República, EAN, 2780-157 Oeiras (Portugal)
| | - Ana R Marques
- Alfama Ltd., Instituto de Biologia Experimental e Tecnológica, IBET, Av. da República, EAN, 2780-157 Oeiras (Portugal)
| | - Lígia M Saraiva
- Instituto de Tecnologia Química e Biológica-António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157 Oeiras (Portugal)
| | - Jesus Olivero-Verbel
- School of Pharmaceutical Sciences, University of Cartagena, Campus of Zaragocilla, Cartagena, Bolivar 130015 (Colombia)
| | - Carlos C Romão
- Instituto de Tecnologia Química e Biológica-António Xavier, Universidade Nova de Lisboa, Av da República, 2780-157 Oeiras (Portugal).,Alfama Ltd., Instituto de Biologia Experimental e Tecnológica, IBET, Av. da República, EAN, 2780-157 Oeiras (Portugal)
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisboa (Portugal) www.gbernardes-lab.com. , .,Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge (UK). ,
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12
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Mudalige DC, Ma ES, Rettig SJ, Patrick BO, James BR. Ruthenium(III) complexes containing bi- and tridentate phosphorus−nitrogen ligands. CAN J CHEM 2014. [DOI: 10.1139/cjc-2013-0539] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Air-stable RuIII complexes containing a bidentate aminophosphine ligand (PN) of the type mer-RuCl3(PN)(PR3) are made from the precursors RuCl3(PR3)2(DMA)·DMA (PN = o-diphenylphosphino-N,N′-dimethylaniline (P−N) and (R)-N,N′-dimethyl-1-[o-diphenylphosphinophenyl]ethylamine ((R)-AMPHOS); R = Ph, p-tolyl; DMA = N,N′-dimethylacetamide). With the tridentate bis[o-(N,N′-dimethylamino)phenyl]phenylphosphine (BNP), the product is mer-RuCl3(BNP) (3), while tris[o-(N,N′-dimethylaminophenyl)phosphine (TNP) is unreactive toward the precursor. Crystal structures of mer-RuCl3(PN)(PPh3), where PN is P−N (2a), (R)-AMPHOS (4a), and 3·CHCl3 are reported as well as those of (R)-AMPHOS, BNP, and TNP. The RuIII−aminophosphine complexes are the first monomeric RuIII species to be formed via the useful, easily synthesized, air-stable RuIII precursors RuCl3(PR3)2(DMA)·DMA (1a and 1b); complex 2a is formed also via reaction of HCl with trans-RuCl2(P−N)(PPh3). A crystal structure of mer,cis-RuCl3(DMA)2(PPh3)·DMA (1c), a side-product from the synthesis of the RuIII precursor, is also presented and is the first-reported complex of DMA with RuIII. Preliminary data show that the RuIII−aminophosphine complexes in DMA (a proton-accepting solvent) are reduced by H2 to RuII species that can react further to form an η2-H2 adduct and then a RuII-hydridochloro species.
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Affiliation(s)
- Dona C. Mudalige
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Erin S.F. Ma
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Steven J. Rettig
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Brian O. Patrick
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Brian R. James
- Department of Chemistry, The University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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13
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Tsou CC, Chiu WC, Ke CH, Tsai JC, Wang YM, Chiang MH, Liaw WF. Iron(III) Bound by Hydrosulfide Anion Ligands: NO-Promoted Stabilization of the [FeIII–SH] Motif. J Am Chem Soc 2014; 136:9424-33. [DOI: 10.1021/ja503683y] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chih-Chin Tsou
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Wei-Chun Chiu
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chun-Hung Ke
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jia-Chun Tsai
- Department
of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Yun-Ming Wang
- Department
of Biological Science and Technology, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Ming-Hsi Chiang
- Institute
of Chemistry, Academia Sinica, Nankang, Taipei 115, Taiwan
| | - Wen-Feng Liaw
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
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14
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Hartle MD, Sommer SK, Dietrich SR, Pluth MD. Chemically reversible reactions of hydrogen sulfide with metal phthalocyanines. Inorg Chem 2014; 53:7800-2. [PMID: 24785654 PMCID: PMC4123935 DOI: 10.1021/ic500664c] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
![]()
Hydrogen sulfide (H2S)
is an important signaling molecule that exerts action on various bioinorganic
targets. Despite this importance, few studies have investigated the
differential reactivity of the physiologically relevant H2S and HS– protonation states with metal complexes.
Here we report the distinct reactivity of H2S and HS– with zinc(II) and cobalt(II) phthalocyanine (Pc) complexes
and highlight the chemical reversibility and cyclability of each metal.
ZnPc reacts with HS–, but not H2S, to
generate [ZnPc-SH]−, which can be converted back
to ZnPc by protonation. CoPc reacts with HS–, but
not H2S, to form [CoIPc]−,
which can be reoxidized to CoPc by air. Taken together, these results
demonstrate the chemically reversible reaction of HS– with metal phthalocyanine complexes and highlight the importance
of H2S protonation state in understanding the reactivity
profile of H2S with biologically relevant metal scaffolds. The protonation state of H2S influences
its reactivity with different metal phthalocyanine (Pc) complexes.
Both ZnPc and CoPc react with H2S in a chemically reversible
manner, with redox-inactive ZnPc binding HS− and
redox-active CoPc undergoing reduction. The [ZnPc-SH]− product can be reverted to ZnPc by protonation, and [CoIPc]− can be redoxidized to CoPc with air.
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Affiliation(s)
- Matthew D Hartle
- Department of Chemistry and Biochemistry, Materials Science Institute, University of Oregon , Eugene, Oregon 97403-1253, United States
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15
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Dance I, Henderson RA. Large structural changes upon protonation of Fe4S4 clusters: the consequences for reactivity. Dalton Trans 2014; 43:16213-26. [DOI: 10.1039/c4dt01687d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recognition that protonation of μ3-S in [Fe4S4X4]2− clusters causes breaking of an S–Fe bond provides a kinetically consistent general mechanism for the acid-catalysed substitution reactions of [Fe4S4X4]2− clusters.
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Affiliation(s)
- Ian Dance
- School of Chemistry
- University of New South Wales
- Sydney 2052, Australia
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16
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Ma ES, Patrick BO, James BR. Reactions of phenylacetylene and p-tolylacetylene with a five-coordinate RuII complex. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Meininger DJ, Caranto JD, Arman HD, Tonzetich ZJ. Studies of iron(III) porphyrinates containing silanethiolate ligands. Inorg Chem 2013; 52:12468-76. [PMID: 24138018 DOI: 10.1021/ic401467k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The chemistry of several iron(III) porphyrinates containing silanethiolate ligands is described. The complexes are prepared by protonolysis reactions of silanethiols with the iron(III) precursors, [Fe(OMe)(TPP)] and [Fe(OH)(H2O)(TMP)] (TPP = dianion of meso-tetraphenylporphine; TMP = dianion of meso-tetramesitylporphine). Each of the compounds has been fully characterized in solution and the solid state. The stability of the silanethiolate complexes versus other iron(III) porphyrinate complexes containing sulfur-based ligands allows for an examination of their reactivity with several biologically relevant small molecules including H2S, NO, and 1-methylimidazole. Electrochemically, the silanethiolate complexes display a quasi-reversible one-electron oxidation event at potentials higher than that observed for an analogous arenethiolate complex. The behavior of these complexes versus other sulfur-ligated iron(III) porphyrinates is discussed.
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Affiliation(s)
- Daniel J Meininger
- Department of Chemistry, University of Texas at San Antonio (UTSA) , San Antonio, Texas 78249, United States
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Ma ESF, Mudalige DC, Patrick BO, James BR. Comparative properties of coordinated H2 and H2S at a ruthenium(II) centre. Dalton Trans 2013; 42:7614-21. [PMID: 23536116 DOI: 10.1039/c3dt50314c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Thermodynamic data for the reversible formation of cis-RuCl2(P-N)(PPh3)(η(2)-H2) () from trans-RuCl2(P-N)(PPh3) in C6D6 are determined by variable temperature (31)P{(1)H} and (1)H NMR spectroscopy; P-N = o-diphenylphosphino-N,N'-dimethylaniline. Values of ΔH° = -26 ± 4 kJ mol(-1), ΔS° = -40 ± 15 J mol(-1) K(-1), and ΔG° (at 25 °C) = -13.8 ± 0.2 kJ mol(-1) are compared with recently reported data for the corresponding H2S adduct (4a), where the exothermicity is greater by ~20 kJ mol(-1), but this is counteracted by a more unfavourable entropy change, and overall the K and ΔG° values at 25 °C are close. For loss of H2 from 2a in the solid state, whose X-ray structure is presented, ΔH° is 50 ± 3 kJ mol(-1) as measured by Differential Scanning Calorimetry. The pKa values of the coordinated H2 (~11) and H2S (~14) are estimated by reactions of 2a and 4a with proton sponge (1,8-bis(dimethylamino)naphthalene) in CD2Cl2 at 20 °C; the mono-hydrido and -mercapto products are identified in situ. A corresponding H2O adduct is not deprotonated under the same conditions. Related dihydrido, mercapto and hydroxy species are formed by in situ reactions of 1a with NaH, NaSH, and NaOH, respectively.
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Affiliation(s)
- Erin S F Ma
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z
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Ma ESF, Patrick BO, James BR. Reversible binding of water, methanol, and ethanol to a five-coordinate ruthenium(II) complex. Dalton Trans 2013; 42:4291-8. [PMID: 23344393 DOI: 10.1039/c3dt32909g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The known green, five-coordinate, square-pyramidal trans-RuCl(2)(P-N)(PPh(3)) complex reversibly binds water, MeOH and EtOH in the vacant coordination site in the solid state and in CH(2)Cl(2) solution to give pink adducts (P-N = o-diphenylphosphino-N,N'-dimethylaniline). The adducts are well characterized, including X-ray analysis of the aqua complex, trans-RuCl(2)(P-N)(PPh(3))(H(2)O), which crystallizes in two different benzene-solvated forms. Comparison of the structural data with those determined previously for the binding of H(2)S, thiols, and H(2), which form cis-RuX(2)(P-N)(PPh(3))L products (X = Cl, Br; L = a S-ligand or H(2)) reveals the trans-influence trend P > H(2)S ~ thiols > H(2) > Cl ~ Br > H(2)O. Thermodynamic data for the binding of water were estimated in solution by UV-Vis spectroscopy, and ΔH(o) data for the aqua and alcohol adducts in the solid state were obtained by differential scanning calorimetry. Inclusion of published data for the S-ligand adducts reveals the thermal stability trend of the solid complexes as MeSH > MeOH > H(2)S > H(2)O > EtSH > EtOH.
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Affiliation(s)
- Erin S F Ma
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
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Ma ESF, Mudalige DC, James BR. Binding of CO and NH3 at a five-coordinate Ru(ii) centre in the solid state and in solution. Dalton Trans 2013; 42:13628-34. [DOI: 10.1039/c3dt51625c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Galardon E, Roger T, Deschamps P, Roussel P, Tomas A, Artaud I. Synthesis of a FeIISH Complex Stabilized by an Intramolecular N–H···S Hydrogen Bond, Which Acts as a H2S Donor. Inorg Chem 2012; 51:10068-70. [DOI: 10.1021/ic300952d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Erwan Galardon
- Laboratoire de Chimie et Biochimie
Pharmacologique et Toxicologique, UMR 8601 CNRS, Université Paris Descartes, PRES
Paris cité, 45 rue des Saints Pères, 75270 Paris Cedex
06, France
| | - Thomas Roger
- Laboratoire de Chimie et Biochimie
Pharmacologique et Toxicologique, UMR 8601 CNRS, Université Paris Descartes, PRES
Paris cité, 45 rue des Saints Pères, 75270 Paris Cedex
06, France
| | - Patrick Deschamps
- Laboratoire
de Crystallographie
et RMN Biologiques, UMR 8015 CNRS, Université Paris Descartes, PRES Paris cité, 4 avenue de
l’Observatoire, 75270 Paris Cedex 06, France
| | - Pascal Roussel
- Unité de Catalyse et Chimie
du Solide (UCCS), UMR 8012 CNRS, École Nationale Supérieure de Chimie de Lille, BP 90108, 59652
Villeneuve d’Ascq Cedex, France
| | - Alain Tomas
- Laboratoire
de Crystallographie
et RMN Biologiques, UMR 8015 CNRS, Université Paris Descartes, PRES Paris cité, 4 avenue de
l’Observatoire, 75270 Paris Cedex 06, France
| | - Isabelle Artaud
- Laboratoire de Chimie et Biochimie
Pharmacologique et Toxicologique, UMR 8601 CNRS, Université Paris Descartes, PRES
Paris cité, 45 rue des Saints Pères, 75270 Paris Cedex
06, France
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