1
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Xu Y, Cheng C, Zhu J, Zhang B, Wang Y, Yu Y. Sulphur-Boosted Active Hydrogen on Copper for Enhanced Electrocatalytic Nitrate-to-Ammonia Selectivity. Angew Chem Int Ed Engl 2024; 63:e202400289. [PMID: 38372474 DOI: 10.1002/anie.202400289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 02/20/2024]
Abstract
Electrocatalytic nitrate reduction to ammonia is a promising approach in term of pollutant appreciation. Cu-based catalysts performs a leading-edge advantage for nitrate reduction due to its favorable adsorption with *NO3. However, the formation of active hydrogen (*H) on Cu surface is difficult and insufficient, leading to the significant generation of by-product NO2 -. Herein, sulphur doped Cu (Cu-S) is prepared via an electrochemical conversion strategy and used for nitrate electroreduction. The high Faradaic efficiency (FE) of ammonia (~98.3 %) and an extremely low FE of nitrite (~1.4 %) are achieved on Cu-S, obviously superior to its counterpart of Cu (FENH3: 70.4 %, FENO2 -: 18.8 %). Electrochemical in situ characterizations and theoretical calculations indicate that a small amount of S doping on Cu surface can promote the kinetics of H2O dissociation to active hydrogen. The optimized hydrogen affinity validly decreases the hydrogenation kinetic energy barrier of *NO2, leading to an enhanced NH3 selectivity.
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Affiliation(s)
- Yue Xu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Chuanqi Cheng
- Department of Chemistry, Institute of Molecular Plus, School of Science, Tianjin University, Tianjin, 300350, China
| | - Jiewei Zhu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Bin Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- Department of Chemistry, Institute of Molecular Plus, School of Science, Tianjin University, Tianjin, 300350, China
| | - Yuting Wang
- Department of Chemistry, Institute of Molecular Plus, School of Science, Tianjin University, Tianjin, 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
| | - Yifu Yu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- Department of Chemistry, Institute of Molecular Plus, School of Science, Tianjin University, Tianjin, 300350, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
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2
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Bhowmik R, Roy M. Recent advances on the development of NO-releasing molecules (NORMs) for biomedical applications. Eur J Med Chem 2024; 268:116217. [PMID: 38367491 DOI: 10.1016/j.ejmech.2024.116217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/19/2024]
Abstract
Nitric oxide (NO) is an important biological messenger as well as a signaling molecule that participates in a broad range of physiological events and therapeutic applications in biological systems. However, due to its very short half-life in physiological conditions, its therapeutic applications are restricted. Efforts have been made to develop an enormous number of NO-releasing molecules (NORMs) and motifs for NO delivery to the target tissues. These NORMs involve organic nitrate, nitrite, nitro compounds, transition metal nitrosyls, and several nanomaterials. The controlled release of NO from these NORMs to the specific site requires several external stimuli like light, sound, pH, heat, enzyme, etc. Herein, we have provided a comprehensive review of the biochemistry of nitric oxide, recent advancements in NO-releasing materials with the appropriate stimuli of NO release, and their biomedical applications in cancer and other disease control.
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Affiliation(s)
- Rintu Bhowmik
- Department of Chemistry, National Institute of Technology Manipur, Langol, 795004, Imphal West, Manipur, India
| | - Mithun Roy
- Department of Chemistry, National Institute of Technology Manipur, Langol, 795004, Imphal West, Manipur, India.
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3
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Takeyama T, Shimazaki Y. Diversity of oxidation state in copper complexes with phenolate ligands. Dalton Trans 2024; 53:3911-3929. [PMID: 38319292 DOI: 10.1039/d3dt04230h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
The phenoxyl radical binding copper complexes have been widely developed and their detailed geometric and electronic structures have been clarified. While many one-electron oxidized CuII-phenolate complexes have been reported previously, recent studies of the Cu-phenolate complexes proceed toward elucidation of the complexes with other oxidation states, such as the phenoxyl radical binding CuI complexes and CuIV-phenolate complexes in the formal oxidation state. This Perspective focuses on new aspects of the properties and reactivities of various Cu-phenolate and Cu-phenoxyl radical complexes with emphasis on the relationship between geometric and electronic structures.
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Affiliation(s)
- Tomoyuki Takeyama
- Department of Applied Chemistry, Sanyo-Onoda City University, 1-1-1, Daigakudori, Sanyo-Onoda, 756-0884 Yamaguchi, Japan.
| | - Yuichi Shimazaki
- College of Science, Ibaraki University, Bunkyo, Mito 310-8512, Japan.
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4
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Sinclair MG, Roig N, Gyton MR, Tsoureas N, Cloke FGN, Alonso M, Chaplin AB. T-Shaped Palladium and Platinum {MNO} 10 Nitrosyl Complexes. Inorg Chem 2024; 63:1709-1713. [PMID: 38207212 PMCID: PMC10828984 DOI: 10.1021/acs.inorgchem.3c03434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/13/2024]
Abstract
The synthesis and characterization of a homologous series of T-shaped {MNO}10 nitrosyl complexes of the form [M(PR3)2(NO)]+ (M = Pd, Pt; R = tBu, Ad) are reported. These diamagnetic nitrosyls are obtained from monovalent or zerovalent precursors by treatment with NO and NO+, respectively, and are notable for distinctly bent M-NO angles of ∼123° in the solid state. Adoption of this coordination mode in solution is also supported by the analysis of isotopically enriched samples by 15N NMR spectroscopy. Effective oxidation states of M0/NO+ are calculated, and metal-nitrosyl bonding has been interrogated using DFT-based energy decomposition analysis techniques. While a linear nitrosyl coordination mode was found to be electronically preferred, the M-NO and P-M-P angles are inversely correlated to the extent that binding in this manner is prevented by steric repulsion between the bulky ancillary phosphine ligands.
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Affiliation(s)
- Matthew
J. G. Sinclair
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Nil Roig
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
- Eenheid
Algemene Chemie (ALGC), Vrije Universiteit
Brussel (VUB), 1050 Brussels, Belgium
| | - Matthew R. Gyton
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
| | - Nikolaos Tsoureas
- Department
of Chemistry, University of Sussex, Falmer, Brighton BN1 9QR, U.K.
| | | | - Mercedes Alonso
- Eenheid
Algemene Chemie (ALGC), Vrije Universiteit
Brussel (VUB), 1050 Brussels, Belgium
| | - Adrian B. Chaplin
- Department
of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, U.K.
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5
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Kim M, Park S, Song D, You Y, Lim M, Lee HI. Effect of Electron-donating Group on NO Photolysis of {RuNO} 6 Ruthenium Nitrosyl Complexes with N 2 O 2 Lgands Bearing π-Extended Rings. Chem Asian J 2024; 19:e202300908. [PMID: 37969065 DOI: 10.1002/asia.202300908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 11/17/2023]
Abstract
In this study, we introduced the electron-donating group (-OH) to the aromatic rings of Ru(salophen)(NO)Cl (0) (salophenH2 =N,N'-(1,2-phenylene)bis(salicylideneimine)) to investigate the influence of the substitution on NO photolysis and NO-releasing dynamics. Three derivative complexes, Ru((o-OH)2 -salophen)(NO)Cl (1), Ru((m-OH)2 -salophen)(NO)Cl (2), and Ru((p-OH)2 -salophen)(NO)Cl (3) were developed and their NO photolysis was monitored by using UV/Vis, EPR, NMR, and IR spectroscopies under white room light. Spectroscopic results indicated that the complexes were diamagnetic Ru(II)-NO+ species which were converted to low-spin Ru(III) species (d5 , S=1/2) and released NO radicals by photons. The conversion was also confirmed by determining the single-crystal structure of the photoproduct of 1. The photochemical quantum yields (ΦNO s) of the photolysis were determined to be 0>1, 2, 3 at both the visible and UV excitations. Femtosecond (fs) time-resolved mid-IR spectroscopy was employed for studying NO-releasing dynamics. The geminate rebinding (GR) rates of the photoreleased NO to the photolyzed complexes were estimated to be 0≃1, 2, 3. DFT and TDDFT computations found that the introduction of the hydroxyl groups elevated the ligand π-bonding orbitals (π (salophen)), resulting in decrease of the HOMO-LUMO gaps in 1-3. The theoretical calculations suggested that the Ru-NNO bond dissociations of the complexes were mostly initiated by the ligand-to-ligand charge transfer (LLCT) of π(salophen)→π*(Ru-NO) with both the visible and UV excitations and the decreasing ΦNO s could be explained by the changes of the electronic structures in which the photoactivable bands of 1-3 have relatively less contribution of transitions related with Ru-NO bond than those of 0.
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Affiliation(s)
- Minyoung Kim
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Seongchul Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | - Dayoon Song
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Youngmin You
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Manho Lim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Republic of Korea
| | - Hong-In Lee
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
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6
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Ismail TM, Patkar D, Sajith PK, Deshmukh MM. Interplay of Hydrogen, Pnicogen, and Chalcogen Bonding in X(H 2O) n=1-5 (X = NO, NO +, and NO -) Complexes: Energetics Insights via a Molecular Tailoring Approach. J Phys Chem A 2023. [PMID: 38029408 DOI: 10.1021/acs.jpca.3c04181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Nitric oxide (NO) and its redox congeners (NO+ and NO-), designated as X, play vital roles in various atmospheric and biological events. Understanding the interaction between X and water is inevitable to explain the different reactions that occur during these events. The present study is a unified attempt to explore the noncovalent interactions in microhydrated networks of X using the MP2/aug-cc-pVTZ//MP2/6-311++G(d,p) level of theory. The interactions between X and water have been probed by the molecular electrostatic potential (MESP) by exploiting the features of the most positive (Vmax) and most negative potential (Vmin) sites. The individual energy and cooperativity contributions of various types of noncovalent interactions present in X(H2O)n=1-5 complexes are estimated with the help of a molecular tailoring-based approach (MTA-based). The MTA-based analysis reveals that among various possible interactions in NO(H2O)n complexes, the water···water hydrogen bonds (HBs) are the strongest. Neutral NO can form hydrogen and pnicogen bonds (PBs) with water depending on the orientation; however, such HBs and PBs are the weakest. On the other hand, in the NO+(H2O)n complexes, the NO+···water interactions that occur through PBs are the strongest; the next one is the chalcogen bonding (CB), and the water···water HBs are the weakest. In the case of the NO-(H2O)n complexes, the HB interactions via both N and O atoms of NO- and water molecules are the strongest ones. The strength of water···water HB interactions is also seen to increase with the increase in the number of water molecules in NO-(H2O)n. The present study exemplifies the applicability of MTA-based calculations for quantifying various types of individual noncovalent interactions and their interplay in microhydrated networks of NO and its related ions.
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Affiliation(s)
- Thufail M Ismail
- Department of Chemistry, Farook College, Kozhikode, Kerala 673632, India
| | - Deepak Patkar
- Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar 470003, India
| | - Pookkottu K Sajith
- Department of Chemistry, Farook College, Kozhikode, Kerala 673632, India
| | - Milind M Deshmukh
- Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar 470003, India
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7
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Park J, Kim J, Jeong GY, Kim Y, Lee E. Uncovering Nitrosyl Reactivity at N-Heterocyclic Carbene Center. Angew Chem Int Ed Engl 2023:e202314978. [PMID: 37917039 DOI: 10.1002/anie.202314978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/03/2023]
Abstract
N-heterocyclic carbenes (NHCs) have garnered much attention due to their unique properties, such as strong σ-donating and π-accepting abilities, as well as their transition-metal-like reactivity toward small molecules. In 2015, we discovered that NHCs can react with nitric oxide (NO) gas to form radical adducts that resemble transition metal nitrosyl complexes. To elucidate the analogy between NHC and transition metal NO adducts, here we have undertaken a systematic investigation of the electron- and proton-transfer chemistry of [NHC-NO]⋅ (N-heterocyclic carbene nitric oxide radical) compounds. We have accessed a suite of compounds, comprised of [NHC-NO]+ , [NHC-NO]- , [NHC-NOH]0 , and [NHC-NHOH]+ species. In particular, [NHC-NO]- was isolated as potassium and lithium ion adducts. Most interestingly, a monomeric potassium [NHC-NO]- compound was isolated with the assistance of 18-crown-6, which is the first instance of a monomeric alkali N-oxyl compound to the best of our knowledge. Our results demonstrate that [NHC-NO]⋅ exhibits redox behavior broadly similar to metal nitrosyl complexes, which opens up more possibilities for utilizing NHCs to build on the known reactivity of metal complexes.
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Affiliation(s)
- Junbeom Park
- Department of Chemistry, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Jaelim Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Gu Yoon Jeong
- Department of Chemistry, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Youngsuk Kim
- Department of Chemistry, Pusan National University, Busan, 46241, Republic of Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
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8
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Saha S, Maity S, Mazumdar R, Samanta B, Ghosh R, Guha AK, Mondal B. Sixth Ligand Induced HNO/NO - Release by a Five-Coordinated Cobalt(II) Nitrosyl Complex Having a {CoNO} 8 Configuration. Inorg Chem 2023; 62:17074-17082. [PMID: 37811901 DOI: 10.1021/acs.inorgchem.3c01124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Nitroxyl (HNO) and nitroxide (NO-) anion, the one-electron-reduced form of nitric oxide (NO), have been shown to have distinct advantages over NO from pharmacological and therapeutic points of view. However, the role of nitroxyl in chemical biology has not yet been studied as extensively as that of NO. Consequently, only a few examples of HNO donors such as Angeli's salt, Piloty's acid, or acyl- and acyloxynitroso derivatives are known. However, the intrinsic limitations of all of these hinder their widespread utility. Metal nitrosyl complexes, although few examples, could serve as an efficient HNO donor. Here, a cobalt nitrosyl complex of the {CoNO}8 (1) configuration has been reported. This complex in the presence of a sixth ligand [BF4-, DTC- (diethyldithiocarbamate anion), or imidazole] releases/donates HNO/NO-. This has been confirmed using well-known HNO/NO- acceptors like [Fe(TPP)Cl] and [Fe(DTC)3]. The HNO release has been authenticated further by the detection and estimation of N2O using gas chromatography-mass spectroscopy as well as its reaction with PPh3.
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Affiliation(s)
- Shankhadeep Saha
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam 781039, India
| | - Sayani Maity
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam 781039, India
| | - Rakesh Mazumdar
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam 781039, India
| | - Bapan Samanta
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam 781039, India
| | - Riya Ghosh
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam 781039, India
| | - Ankur K Guha
- Advanced Computational Chemistry Center, Department of Chemistry, Cotton University, Guwahati, Assam781001, India
| | - Biplab Mondal
- Department of Chemistry, Indian Institute of Technology (IIT) Guwahati, Guwahati, Assam 781039, India
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9
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Gee LB, Lim J, Kroll T, Sokaras D, Alonso-Mori R, Lee CM. Unraveling Metal-Ligand Bonding in an HNO-Evolving {FeNO} 6 Complex with a Combined X-ray Spectroscopic Approach. J Am Chem Soc 2023; 145:20733-20738. [PMID: 37610249 PMCID: PMC10876219 DOI: 10.1021/jacs.3c04479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Photolytic delivery of nitric oxide and nitroxide has substantial biomedical and phototherapeutic applications. Here, we utilized hard X-ray spectroscopic methods to identify key geometric and electronic structural features of two photolabile {FeNO}6 complexes where the compounds differ in the presence of a pendant thiol in [Fe(NO)(TMSPS2)(TMSPS2H)] and thioether in [Fe(NO)(TMSPS2)(TMSPS2CH3)] with the former complex being the only transition metal system to photolytically generate HNO. Fe Kβ XES identifies the photoreactant systems as essentially Fe(II)-NO+, while valence-to-core XES extracts a NO oxidation state of +0.5. Finally, the pre-edge of the Fe high-energy-resolution fluorescence detected (HERFD) XAS spectra is shown to be acutely sensitive to perturbation of the Fe-NO covalency enhanced by the 3d-4p orbital mixing dipole intensity contribution. Collectively, this X-ray spectroscopic approach enables future time-resolved insights in these systems and extensions to other challenging redox noninnocent {FeNO}x systems.
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Affiliation(s)
- Leland B. Gee
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Jinkyu Lim
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Thomas Kroll
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Dimosthenis Sokaras
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Roberto Alonso-Mori
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Chien-Ming Lee
- Department of Applied Science, National Taitung University, Taitung 950, Taiwan
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10
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Chen H, Lee G, Chien S, Lee C. Light‐induced
NO
release from iron‐nitrosyl‐thiolato complex: The role of noncovalent thiol/thioether. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202300002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Affiliation(s)
- Huai‐Cheng Chen
- Department of Applied Science National Taitung University Taitung Taiwan
| | - Gene‐Hsiang Lee
- Instrumentation Center National Taiwan University Taipei Taiwan
| | - Su‐Ying Chien
- Instrumentation Center National Taiwan University Taipei Taiwan
| | - Chien‐Ming Lee
- Department of Applied Science National Taitung University Taitung Taiwan
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11
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Pokidova OV, Novikova VO, Emel'yanova NS, Kormukhina AY, Kulikov AV, Utenyshev AN, Lazarenko VA, Ovanesyan NS, Starostina AA, Sanina NA. A nitrosyl iron complex with 3.4-dichlorothiophenolyl ligands: synthesis, structures and its reactions with targets - carriers of nitrogen oxide (NO) in vivo. Dalton Trans 2023; 52:2641-2662. [PMID: 36744818 DOI: 10.1039/d2dt04047f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this work, a new binuclear nitrosyl complex with 3.4-dichlorothiophenolyl ligands [Fe2(SC6H3Cl2)2(NO)4] has been synthesized. Nitrosyl iron complexes (NICs) are systems for the storage and delivery of NO in the body. There is a dynamic equilibrium between dinitrosyl iron units bound to low molecular weight ligands and high molecular weight (protein) ligands in vivo. From this point of view, the transformation of the studied complex in DMSO and buffer, as well as in biological systems, has been analyzed. In DMSO, it decomposes into mononuclear NICs, which quickly decay in buffer solutions with NO release. The high molecular weight product is formed as a result of the binding of the complex to bovine serum albumin (the Stern-Volmer constant is 2.1 × 105 M-1). In this case, the complex becomes a prolonged NO-donor. Such a long-term effect has been observed for the first time. Similarly, in a system with oxyhemoglobin, NO generation is slower; the UV-vis spectra show a gradual formation of methemoglobin. On the other hand, reduced glutathione has little effect on the NO-donor properties of the complex despite the fact that ligand substitution is observed in the system and a binuclear product is formed. Mucin binds the complex, and the decomposition mechanism is different from that for buffer solutions. Thus, these proteins and glutathione are able to participate in the transformation of the complex and modulate its properties as a potential drug.
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Affiliation(s)
- Olesya V Pokidova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Veronika O Novikova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Nina S Emel'yanova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Alexandra Yu Kormukhina
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation
| | - Alexander V Kulikov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation
| | - Andrey N Utenyshev
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Vladimir A Lazarenko
- National Research Center 'Kurchatov Institute', pl. Academician Kurchatov, 1, 123182, Moscow, Russian Federation
| | - Nikolai S Ovanesyan
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Arina A Starostina
- Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation
| | - Natalya A Sanina
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation.,Scientific and Educational Center "Medical Chemistry", Moscow State Regional Pedagogical University, st. Vera Voloshina, 24, 141014 Mytishchi, Moscow Region, Russian Federation
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12
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Sharma N, Kumar V, Jose DA. A ruthenium nitrosyl complex-based highly selective colorimetric sensor for biological H 2S and H 2S-NO cross-talk regulated release of NO. Dalton Trans 2023; 52:675-682. [PMID: 36537888 DOI: 10.1039/d2dt03108f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A ruthenium nitrosyl complex (1·NO) and 1·NO incorporated phospholipid-based liposomes (Lip-1·NO) were reported for highly selective colorimetric detection of H2S. The probe 1·NO "cross-talks" with H2S and releases nitric oxide (NO) in the process. The detection limit for H2S was found to be 0.31 μM and 0.45 μM in the cases of 1·NO and Lip-1·NO, respectively. The DAF-FM DA assay has been performed to confirm the H2S-induced NO release from 1·NO and Lip-1·NO. The sensing of H2S was also verified by ESI-MS and FT-IR spectroscopy. It was also observed that external stimuli, H2S and light worked in an almost similar way to release NO as observed by UV-Vis spectroscopy. A molecular logic gate operation "OR" was applied to the probe 1·NO in combination with inputs 'light' and 'H2S' to give the output 'NO release'. Hence, the probe 1·NO performs the dual work of sensing H2S with a colorimetric response, releasing NO upon cross-talk between NO and H2S.
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Affiliation(s)
- Nancy Sharma
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India.
| | - Vinod Kumar
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India.
| | - D Amilan Jose
- Department of Chemistry, National Institute of Technology (NIT) Kurukshetra, Kurukshetra-136119, Haryana, India.
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13
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Meizyte G, Pearcy PAJ, Watson PD, Brewer EI, Green AE, Doll M, Duda OA, Mackenzie SR. An Infrared Study of Gas-Phase Metal Nitrosyl Ion-Molecule Complexes. J Phys Chem A 2022; 126:9414-9422. [PMID: 36480929 PMCID: PMC9791661 DOI: 10.1021/acs.jpca.2c07228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We present a combined experimental and quantum chemical study of gas-phase group 9 metal nitrosyl complexes, M(NO)n+ (M = Co, Rh, Ir). Experimental infrared photodissociation spectra of mass-selected ion-molecule complexes are presented in the region 1600 cm-1 to 2000 cm-1 which includes the NO stretch. These are interpreted by comparison with the simulated spectra of energetically low-lying structures calculated using density functional theory. A mix of linear and nonlinear ligand binding is observed, often within the same complex, and clear evidence of coordination shell closing is observed at n = 4 for Co(NO)n+ and Ir(NO)n+. Calculations of Rh(NO)n+ complexes suggest additional low-lying five-coordinate structures. In all cases, once a second coordination shell is occupied, new spectral features appear which are assigned to (NO)2 dimer moieties. Further evidence of such motifs comes from differences in the spectra recorded in the dissociation channels corresponding to single and double ligand loss.
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14
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Chiang CK, Liu YC, Chu KT, Chen JT, Tsai CY, Lee GH, Chiang MH, Lee CM. Stable Bimetallic Fe II/{Fe(NO) 2} 9 Moiety Derived from Reductive Transformations of a Diferrous-dinitrosyl Species. Inorg Chem 2022; 61:16325-16332. [PMID: 36198195 DOI: 10.1021/acs.inorgchem.2c02319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A dimeric dithiolate-bridged species, [Fe(NO)(PS2)]2 (1) containing two {FeNO}7 units, can be isolated by treating [Fe(CO)2(NO)2] with PS2H2 (PS2H2 = bis(2-dimercaptophenyl)phenylphosphine). Crystallographic studies reveal the syn-configuration of NO units and the bridging thiolates in the butterfly shape of the 2Fe2S core. Addition of PPh3 to the solution of dinuclear 1 leads to the formation of mononuclear {FeNO}7 [Fe(NO)(PS2)(PPh3)] (2) that shows electrochemical responses similar to those of 1. One-electron reduction of 1 with Cp*2Co or KC8 results in the isolation of thiolate-bridged bimetallic DNIC, [(PS2)Fe(μ-PS2)Fe(NO)2]- ([3]-), confirmed by several spectroscopies including single-crystal X-ray diffraction studies. The bimetallic DNIC [3]- is a rare example obtained from the one-electron reduction of a dinuclear Fe-NO {FeNO}7 model complex. With the assistance of redox behaviors of 2, electrochemical studies imply that the reduction of 1 leads to the formation of a mononuclear {FeNO}8 [Fe(NO)(PS2)(THF)]- intermediate, which involves disproportionation or NO- transfer to yield [3]-. Based on IR data and magnetic properties, the electronic structure of [3]- can be described as a FeII/{Fe(NO)2}9 state. Isolation of the {Fe(NO)2}9 moiety coordinated by the Fe ancillary complex lends strong support to the NO scrambling behavior in the effectiveness of the activity of flavodiiron nitric oxide reductases (FNORs).
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Affiliation(s)
- Chuan-Kuei Chiang
- Department of Applied Science, National Taitung University, Taitung950, Taiwan.,Institute of Chemistry, Academia Sinica, Taipei115, Taiwan
| | - Yu-Chiao Liu
- Institute of Chemistry, Academia Sinica, Taipei115, Taiwan
| | - Kai-Ti Chu
- Institute of Chemistry, Academia Sinica, Taipei115, Taiwan
| | - Jing-Ting Chen
- Institute of Chemistry, Academia Sinica, Taipei115, Taiwan
| | - Cheng-Yeh Tsai
- Institute of Chemistry, Academia Sinica, Taipei115, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei106, Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Taipei115, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung807, Taiwan
| | - Chien-Ming Lee
- Department of Applied Science, National Taitung University, Taitung950, Taiwan
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15
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Kumbhakar S, Gupta P, Giri B, Muley A, Karumban KS, Misra A, Maji S. Photolability of NO in ruthenium nitrosyls with pentadentate ligand induces exceptional cytotoxicity towards VCaP, 22Rv1 and A549 cancer cells under therapeutic condition. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Singh S, Navale GR, Mahale M, Chaudhary VK, Kodam K, Ghosh K. Photodissociation of nitric oxide from designed ruthenium nitrosyl complex: Studies on wound healing and antibacterial activity. Nitric Oxide 2022; 129:30-40. [PMID: 36179984 DOI: 10.1016/j.niox.2022.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/08/2022] [Accepted: 09/21/2022] [Indexed: 10/14/2022]
Abstract
A photoactivable NO releasing complex [Ru(L1-2)(PPh3)(NO)Cl2](PF6)(1a) have been synthesized by complex [RuL1-2(PPh3)2Cl2](1). Newly designed bidentate ligands, i.e., 4-methoxy-N'-phenyl-N'-(pyridin-2-ylmethyl)benzohydrazide(L1) and 4-nitro-N'-phenyl-N'-(pyridin-2-ylmethyl)benzohydrazide (L2) were utilized to synthesize complex (1). Complex (1) was characterized by ESI-MS, and the solid structure of the complex [1a](PF6) was acquired by X-ray crystallography. Different spectroscopic techniques were employed for the identification of ligands (L1 and L2) and complexes (1 and [1a](PF6)). Calculations employing DFT and TD-DFT were made better to understand the electronic properties of the complex [1a](PF6). The photo liberation experiments were screened in the presence of visible light lamp. Griess assay experiment was used to quantify the photo released amount to NO. The photo liberated NO was successfully transferred to reduced myoglobin (Mb). The complex [1a](PF6) at 50 μg/mL concentration was used for wound healing and antimicrobial activity on B16F1 mouse skin cells and Escherichia coli bacteria, respectively. In results, we observed a considerable wound healing activity of [1a](PF6) complex after 36 h of incubation in the light-treated cells compared to the control medium, and also it shows more than 99% inhibition of bacterial cells after 1.5 h of treatment in the presence of light. These study suggested that this complex 1a](PF6) could be utilized for topical delivery of NO for combating several dermatological infections.
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Affiliation(s)
- Sain Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Govinda R Navale
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Mithil Mahale
- Department of Biochemistry, Savitribai Phule University of Pune, India
| | - Virendra Kumar Chaudhary
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Kisan Kodam
- Department of Biochemistry, Savitribai Phule University of Pune, India
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India; Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
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17
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Albert T, Moënne-Loccoz P. Spectroscopic Characterization of a Diferric Mycobacterial Hemerythrin-Like Protein with Unprecedented Reactivity toward Nitric Oxide. J Am Chem Soc 2022; 144:17611-17621. [PMID: 36099449 DOI: 10.1021/jacs.2c07113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hemerythrin-like proteins (HLPs) are broadly distributed across taxonomic groups and appear to play highly diverse functional roles in prokaryotes. Mycobacterial HLPs contribute to the survival of these pathogenic bacteria in mammalian macrophages, but their modes of action remain unclear. A recent crystallographic characterization of Mycobacterium kansasii HLP (Mka-HLP) revealed the unexpected presence of a tyrosine sidechain (Tyr54) near the coordination sphere of one of the two iron centers. Here, we show that Tyr54 is a true ligand to the Fe2(III) ion which, in conjunction with the presence of a μ-oxo group bridging the two iron(III), brings unique reactivity toward nitric oxide (NO). Monitoring the titration of Mka-HLP with NO by Fourier-transform infrared and electron paramagnetic resonance spectroscopies shows that both diferric and diferrous forms of Mka-HLP accumulate an uncoupled high-spin and low-spin {FeNO}7 pair. We assign the reactivity of the diferric protein to an initial radical reaction between NO and the μ-oxo bridge to form nitrite and a mixed-valent diiron center that can react further with NO. Amperometric measurements of NO consumption by Mka-HLP confirm that this reactivity can proceed at low micromolar concentrations of NO, before additional NO consumption, supporting a NO scavenging role for mycobacterial HLPs.
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Affiliation(s)
- Therese Albert
- Department of Chemical Physiology and Biochemistry, School of Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
| | - Pierre Moënne-Loccoz
- Department of Chemical Physiology and Biochemistry, School of Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, United States
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18
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Braley SE, Kwon HY, Xu S, Dalton EZ, Jakubikova E, Smith JM. Buffer Assists Electrocatalytic Nitrite Reduction by a Cobalt Macrocycle Complex. Inorg Chem 2022; 61:12998-13006. [PMID: 35948065 DOI: 10.1021/acs.inorgchem.2c00909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work reports a combined experimental and computational study of the activation of an otherwise catalytically inactive cobalt complex, [Co(TIM)Br2]+, for aqueous nitrite reduction. The presence of phosphate buffer leads to efficient electrocatalysis, with rapid reduction to ammonium occurring close to the thermodynamic potential and with high Faradaic efficiency. At neutral pH, increasing buffer concentrations increase catalytic current while simultaneously decreasing overpotential, although high concentrations have an inhibitory effect. Controlled potential electrolysis and rotating ring-disk electrode experiments indicate that ammonium is directly produced from nitrite by [Co(TIM)Br2]+, along with hydroxylamine. Mechanistic investigations implicate a vital role for the phosphate buffer, specifically as a proton shuttle, although high buffer concentrations inhibit catalysis. These results indicate a role for buffer in the design of electrocatalysts for nitrogen oxide conversion.
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Affiliation(s)
- Sarah E Braley
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Hyuk-Yong Kwon
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Song Xu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Evan Z Dalton
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Elena Jakubikova
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Jeremy M Smith
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
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19
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Kim M, Park S, Song D, Moon D, You Y, Lim M, Lee HI. Visible-light NO photolysis of ruthenium nitrosyl complexes with N 2O 2 ligands bearing π-extended rings and their photorelease dynamics. Dalton Trans 2022; 51:11404-11415. [PMID: 35822310 DOI: 10.1039/d2dt01019d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NO photorelease and its dynamics for two {RuNO}6 complexes, Ru(salophen)(NO)Cl (1) and Ru(naphophen)(NO)Cl (2), with salen-type ligands bearing π-extended systems (salophenH2 = N,N'-(1,2-phenylene)-bis(salicylideneimine) and naphophenH2 = N,N'-1,2-phenylene-bis(2-hydroxy-1-naphthylmethyleneimine)) were investigated. NO photolysis was performed under white room light and monitored by UV/Vis, EPR, and NMR spectroscopies. NO photolysis was also performed under 459 and 489 nm irradiation for 1 and 2, respectively. The photochemical quantum yields of the NO photolysis (ΦNO) of both 1 and 2 were determined to be 9% at the irradiation wavelengths. The structural and spectroscopic characteristics of the complexes before and after the photolysis confirmed the conversion of diamagnetic Ru(II)(L)(Cl)-NO+ to paramagnetic S = ½ Ru(III)(L)(Cl)-solvent by photons (L = salophen2- and naphophen2-). The photoreleased NO radicals were detected by spin-trapping EPR. DFT and TDDFT calculations found that the photoactive bands are configured as mostly the ligand-to-ligand charge transfer (LLCT) of π(L) → π*(Ru-NO), suggesting that the NO photorelease was initiated by the LLCT. Dynamics of NO photorelease from the complexes in DMSO under 320 nm excitation were investigated by femtosecond (fs) time-resolved mid-IR spectroscopy. The primary photorelease of NO occurred for less than 0.32 ps after the excitation. The rate constants (k-1) of the geminate rebinding of NO to the photolyzed 1 and 2 were determined to be (15 ps)-1 and (13 ps)-1, respectively. The photochemical quantum yields of NO photolysis (ΦNO, λ = 320 nm) were estimated to be no higher than 14% for 1 and 11% for 2, based on the analysis of the fs time-resolved IR data. The results of fs time-resolved IR spectroscopy and theoretical calculations provided some insight into the overall kinetic reaction pathway, localized electron pathway or resonance pathway, of the NO photolysis of 1 and 2. Overall, our study found that the investigated {RuNO}6 complexes, 1 and 2, with planar N2O2 ligands bearing π-extended rings effectively released NO under visible light.
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Affiliation(s)
- Minyoung Kim
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu 41566, Republic of Korea.
| | - Seongchul Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.
| | - Dayoon Song
- Division of Chemical Engineering and Materials Science, and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Dohyun Moon
- Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science, and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Manho Lim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.
| | - Hong-In Lee
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu 41566, Republic of Korea.
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20
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Arikawa Y, Yamada M, Otsubo Y, Takeuchi Y, Ikeda A, Horiuchi S, Sakuda E, Umakoshi K. Characterization of a half-bent RuNO mode on a dinuclear ruthenium complex through reduction reaction. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yasuhiro Arikawa
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Motoki Yamada
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Yuji Otsubo
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Yuki Takeuchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Ayumi Ikeda
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Shinnosuke Horiuchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan
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21
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Liu S, Sun Y, Zhang T, Cao L, Zhong Z, Cheng H, Wang Q, Qiu Z, Zhou W, Wang X. Upconversion nanoparticles regulated drug & gas dual-effective nanoplatform for the targeting cooperated therapy of thrombus and anticoagulation. Bioact Mater 2022; 18:91-103. [PMID: 35387173 PMCID: PMC8961464 DOI: 10.1016/j.bioactmat.2022.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 12/12/2022] Open
Abstract
Thromboembolism is the leading cause of cardiovascular mortality. Currently, for the lack of targeting, short half-life, low bioavailability and high bleeding risk of the classical thrombolytic drugs, pharmacological thrombolysis is usually a slow process based on micro-pumping. In addition, frequently monitoring and regulating coagulation functions are also required during (and after) the process of thrombolysis. To address these issues, a targeted thrombolytic and anticoagulation nanoplatform (UCATS-UK) is developed based on upconversion nanoparticles (UCNPs) that can convert 808 or 980 nm near-infrared (NIR) light into UV/blue light. This nanoplatform can target and enrich in the thrombus site. Synergistic thrombolysis and anticoagulation therapy thus could be realized through the controlled release of urokinase (UK) and nitric oxide (NO). Both in vitro and in vivo experiments have confirmed the excellent thrombolytic and anticoagulative capabilities of this multifunctional nanoplatform. Combined with the unique fluorescent imaging capability of UCNPs, this work is expected to contribute to the development of clinical thrombolysis therapy towards an integrated system of imaging, diagnosis and treatment. This work is not only the first application of UCNPs in the thrombolysis therapy, but also the first attempt to develop a dual effective drug & gas nanoplatform for thrombolytic & anticoagulation therapy. Besides conventional in vitro and animal experiments, a 3D printed vascular model is also constructed to further verify the feasibility of UCATS-UK. Through surface chemical modification, the nanoplatform possesses the capabilities of targeting thrombus, as well as light-controlled NO release for drug-free anticoagulation therapy.
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22
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Biophysicochemical studies of a ruthenium (II) nitrosyl thioether‐thiolate complex binding to BSA: Mechanistic information, molecular docking, and relationship to antibacterial and cytotoxic activities. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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23
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Bélanger-Desmarais N, Gavriluta A, Tommasino JB, Reber C, Luneau D. Characteristic vibrational frequencies of osmium( ii) nitrosyl complexes probed by Raman spectroscopy and DFT calculations. NEW J CHEM 2022. [DOI: 10.1039/d2nj01713j] [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
Raman spectroscopy at variable temperature provides experimental frequencies for osmium(ii) nitrosyl complexes. Vibrational transitions are assigned using DFT calculations.
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Affiliation(s)
| | - Anatolie Gavriluta
- Université Claude Bernard Lyon 1, Laboratoire des Multimatériaux et Interfaces (UMR 5615), Campus de La Doua, 69622, Villeurbanne Cedex, France
| | - Jean Bernard Tommasino
- Université Claude Bernard Lyon 1, Laboratoire des Multimatériaux et Interfaces (UMR 5615), Campus de La Doua, 69622, Villeurbanne Cedex, France
| | - Christian Reber
- Département de chimie, Université de Montréal, Montréal, H3C 3J7, Québec, Canada
| | - Dominique Luneau
- Université Claude Bernard Lyon 1, Laboratoire des Multimatériaux et Interfaces (UMR 5615), Campus de La Doua, 69622, Villeurbanne Cedex, France
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24
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Parkin G. Impact of the coordination of multiple Lewis acid functions on the electronic structure and v n configuration of a metal center. Dalton Trans 2021; 51:411-427. [PMID: 34931650 DOI: 10.1039/d1dt02921e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The covalent bond classification (CBC) method represents a molecule as MLlXxZz by evaluating the total number of L, X and Z functions interacting with M. The CBC method is a simplistic approach that is based on the notion that the bonding of a ligating atom (or group of atoms) can be expressed in terms of the number of electrons it contributes to a 2-electron bond. In many cases, the bonding in a molecule of interest can be described in terms of a 2-center 2-electron bonding model and the MLlXxZz classification can be derived straightforwardly by considering each ligand independently. However, the bonding within a molecule cannot always be described satisfactorily by using a 2-center 2-electron model and, in such situations, the MLlXxZz classification requires a more detailed consideration than one in which each ligand is treated in an independent manner. The purpose of this article is to provide examples of how the MLlXxZz classification is obtained in the presence of multicenter bonding interactions. Specific emphasis is given to the treatment of multiple π-acceptor ligands and the impact on the vn configuration, i.e. the number of formally nonbonding electrons on an element of interest.
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Affiliation(s)
- Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, USA.
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25
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Cho JH, Kim M, You Y, Lee HI. A new photoactivable NO-releasing {Ru-NO} 6 ruthenium nitrosyl complex with a tetradentate ligand containing aniline and pyridine moieties. Chem Asian J 2021; 17:e202101244. [PMID: 34921511 DOI: 10.1002/asia.202101244] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/25/2021] [Indexed: 11/12/2022]
Abstract
A new type of photoactivable NO-releasing ruthenium nitrosyl complex, [Ru(EPBP)Cl(NO)], with a tetradentate ligand, N,N'-(ethane-1,2-diyldi-o-phenylene)-bis(pyridine-2-carboxamide) (= H2 EPBP) was synthesized. Single crystal X-ray crystallography revealed that the complex has a distorted octahedral coordination geometry and NO is positioned at cis to Cl- ion. NO-photolysis was observed under a white room light. The photodissociation of Ru-NO bond was identified by various techniques including X-ray crystallography, IR, UV/Vis absorption, electron paramagnetic resonance (EPR), and NMR spectroscopies. Quantum yields for the NO-photolysis of the complex in CH3 OH, CHCl3 , DMSO, CH3 CN, and CH3 NO2 were measured to be 0.19-0.36 with 400 (±5) nm excitation. Density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations were performed to understand the details of the photodissociation of the complex. The calculations suggest that the NO photolysis is most likely initiated by the electronic transition from the aniline moiety π MOs (π (aniline)) of the EPBP2- chelating ligand to the π-antibonding MO of Ru-NO (π*(Ru-NO)). Experimental and theoretical investigations indicate that the EPBP2- ligand provides an effective platform forming ruthenium nitrosyl complexes useful for NO-photoreleasing.
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Affiliation(s)
- Jang-Hoon Cho
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Minyoung Kim
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science and Graduated Program in System Health Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Hong-In Lee
- Department of Chemistry and Green-Nano Research Center, Kyungpook National University, Daegu, 41566, Republic of Korea
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26
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Oktawiec J, Jiang HZH, Turkiewicz AB, Long JR. Influence of the primary and secondary coordination spheres on nitric oxide adsorption and reactivity in cobalt(ii)-triazolate frameworks. Chem Sci 2021; 12:14590-14598. [PMID: 34881011 PMCID: PMC8580060 DOI: 10.1039/d1sc03994f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/19/2021] [Indexed: 12/28/2022] Open
Abstract
Nitric oxide (NO) is an important signaling molecule in biological systems, and as such, the ability of porous materials to reversibly adsorb NO is of interest for potential medical applications. Although certain metal-organic frameworks are known to bind NO reversibly at coordinatively unsaturated metal sites, the influence of the metal coordination environment on NO adsorption has not been studied in detail. Here, we examine NO adsorption in the frameworks Co2Cl2(bbta) (H2bbta = 1H,5H-benzo(1,2-d:4,5-d')bistriazole) and Co2(OH)2(bbta) using gas adsorption, infrared spectroscopy, powder X-ray diffraction, and magnetometry. At room temperature, NO adsorbs reversibly in Co2Cl2(bbta) without electron transfer, with low temperature data supporting spin-crossover of the NO-bound cobalt(ii) centers of the material. In contrast, adsorption of low pressures of NO in Co2(OH)2(bbta) is accompanied by charge transfer from the cobalt(ii) centers to form a cobalt(iii)-NO- adduct, as supported by diffraction and infrared spectroscopy data. At higher pressures of NO, characterization data indicate additional uptake of the gas and disproportionation of the bound NO to form a cobalt(iii)-nitro (NO2 -) species and N2O gas, a transformation that appears to be facilitated by secondary sphere hydrogen bonding interactions between the bound NO2 - and framework hydroxo groups. These results provide a rare example of reductive NO binding in a cobalt-based metal-organic framework, and they demonstrate that NO uptake can be tuned by changing the primary and secondary coordination environment of the framework metal centers.
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Affiliation(s)
- Julia Oktawiec
- Department of Chemistry, University of California Berkeley California 94720 USA
| | - Henry Z H Jiang
- Department of Chemistry, University of California Berkeley California 94720 USA
| | - Ari B Turkiewicz
- Department of Chemistry, University of California Berkeley California 94720 USA
| | - Jeffrey R Long
- Department of Chemistry, University of California Berkeley California 94720 USA
- Department of Chemical and Biomolecular Engineering, University of California Berkeley California 94720 USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory Berkeley California 94720 USA
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27
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Gessner N, Bäck AK, Knorr J, Nagel C, Marquetand P, Schatzschneider U, González L, Nuernberger P. Ultrafast photochemistry of a molybdenum carbonyl-nitrosyl complex with a triazacyclononane coligand. Phys Chem Chem Phys 2021; 23:24187-24199. [PMID: 34679150 DOI: 10.1039/d1cp03514b] [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
Transition metal complexes capable of releasing small molecules such as carbon monoxide and nitric oxide upon photoactivation are versatile tools in various fields of chemistry and biology. In this work, we report on the ultrafast photochemistry of [Mo(CO)2(NO)(iPr3tacn)]PF6 (iPr3tacn = 1,4,7-triisopropyl-1,4,7-triazacyclononane), which was characterized under continuous illumination and with femtosecond UV-pump/UV-probe and UV-pump/MIR-probe spectroscopy, as well as with stationary calculations. The experimental and theoretical results demonstrate that while the photodissociation of one of the two CO ligands upon UV excitation can be inferred both on an ultrafast timescale as well as under exposure times of several minutes, no evidence of NO release is observed under the same conditions. The binding mode of the diatomic ligands is impacted by the electronic excitation, and transient intermediates are observed on a timescale of tens of picoseconds before CO is released from the coordination sphere. Furthermore, based on calculated potential energy scans, we suggest that photolysis of NO could be possible after a subsequent excitation of an electronically excited state with a second laser pulse, or by accessing low-lying excited states that otherwise cannot be directly excited by light.
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Affiliation(s)
- Niklas Gessner
- a Physikalische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum, Germany; Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany.
| | - Anna K Bäck
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, A-1090 Wien, Austria
| | - Johannes Knorr
- Physikalische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum, Germany; Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander University Erlangen-Nürnberg (FAU), Paul-Gordan-Straße 6, 91052 Erlangen, Germany
| | - Christoph Nagel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Philipp Marquetand
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, A-1090 Wien, Austria
| | - Ulrich Schatzschneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Leticia González
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 17, A-1090 Wien, Austria
| | - Patrick Nuernberger
- a Physikalische Chemie II, Ruhr-Universität Bochum, Universitätsstraße 150, D-44801 Bochum, Germany; Institut für Physikalische und Theoretische Chemie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany.
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28
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Neuman NI, Venâncio MF, Rocha WR, Bikiel DE, Suárez SA, Doctorovich F. Nitric Oxide Reacts Very Fast with Hydrogen Sulfide, Alcohols, and Thiols to Produce HNO: Revised Rate Constants. Inorg Chem 2021; 60:15997-16007. [PMID: 34450017 DOI: 10.1021/acs.inorgchem.1c01061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The chemical reactivity of NO and its role in several biological processes seem well established. Despite this, the chemical reduction of •NO toward HNO has been historically discarded, mainly because of the negative reduction potential of NO. However, this value and its implications are nowadays under revision. The last reported redox potential, E'(NO,H+/HNO), at micromolar and picomolar concentrations of •NO and HNO, respectively, is between -0.3 and 0 V at pH 7.4. This potential implies that the one-electron-reduction process for NO is feasible under biological conditions and could be promoted by well-known biological reductants with reduction potentials of around -0.3 to -0.5 V. Moreover, the biologically compatible chemical reduction of •NO (nonenzymatic), like direct routes to HNO by alkylamines, aromatic and pseudoaromatic alcohols, thiols, and hydrogen sulfide, has been extensively explored by our group during the past decade. The aim of this work is to use a kinetic modeling approach to analyze electrochemical HNO measurements and to report for the first-time direct reaction rate constants between •NO and moderate reducing agents, producing HNO. These values are between 5 and 30 times higher than the previously reported keff values. On the other hand, we also showed that reaction through successive attack by two NO molecules to biologically compatible compounds could produce HNO. After over 3 decades of intense research, the •NO chemistry is still there, ready to be discovered.
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Affiliation(s)
- Nicolas I Neuman
- Instituto de Desarrollo Tecnológico para la Industria Química, INTEC, UNL-CONICET, Paraje El Pozo, Santa Fe 3000, Argentina.,Institut für Anorganische Chemie, Universität Stuttgart, Stuttgart D-70569, Germany
| | - Mateus F Venâncio
- Departamento de Físico-Química, Instituto de Química, Universidade Federal da Bahia, Salvador, Bahia 40170-110, Brazil
| | - Willian R Rocha
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Damian E Bikiel
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1053, Argentina.,INQUIMAE-CONICET, Ciudad Universitaria, Buenos Aires C1428EHA, Argentina
| | - Sebastián A Suárez
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1053, Argentina.,INQUIMAE-CONICET, Ciudad Universitaria, Buenos Aires C1428EHA, Argentina
| | - Fabio Doctorovich
- Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1053, Argentina.,INQUIMAE-CONICET, Ciudad Universitaria, Buenos Aires C1428EHA, Argentina
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29
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Gonzaga de França Lopes L, Gouveia Júnior FS, Karine Medeiros Holanda A, Maria Moreira de Carvalho I, Longhinotti E, Paulo TF, Abreu DS, Bernhardt PV, Gilles-Gonzalez MA, Cirino Nogueira Diógenes I, Henrique Silva Sousa E. Bioinorganic systems responsive to the diatomic gases O2, NO, and CO: From biological sensors to therapy. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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30
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The Relationship of Glutathione- S-Transferase and Multi-Drug Resistance-Related Protein 1 in Nitric Oxide (NO) Transport and Storage. Molecules 2021; 26:molecules26195784. [PMID: 34641326 PMCID: PMC8510172 DOI: 10.3390/molecules26195784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/21/2021] [Accepted: 09/21/2021] [Indexed: 12/18/2022] Open
Abstract
Nitric oxide is a diatomic gas that has traditionally been viewed, particularly in the context of chemical fields, as a toxic, pungent gas that is the product of ammonia oxidation. However, nitric oxide has been associated with many biological roles including cell signaling, macrophage cytotoxicity, and vasodilation. More recently, a model for nitric oxide trafficking has been proposed where nitric oxide is regulated in the form of dinitrosyl-dithiol-iron-complexes, which are much less toxic and have a significantly greater half-life than free nitric oxide. Our laboratory has previously examined this hypothesis in tumor cells and has demonstrated that dinitrosyl-dithiol-iron-complexes are transported and stored by multi-drug resistance-related protein 1 and glutathione-S-transferase P1. A crystal structure of a dinitrosyl-dithiol-iron complex with glutathione-S-transferase P1 has been solved that demonstrates that a tyrosine residue in glutathione-S-transferase P1 is responsible for binding dinitrosyl-dithiol-iron-complexes. Considering the roles of nitric oxide in vasodilation and many other processes, a physiological model of nitric oxide transport and storage would be valuable in understanding nitric oxide physiology and pathophysiology.
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31
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Cai Z, Tao W, Moore CE, Zhang S, Wade CR. Direct NO Reduction by a Biomimetic Iron(II) Pyrazolate MOF. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhongzheng Cai
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Wenjie Tao
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Shiyu Zhang
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
| | - Casey R. Wade
- Department of Chemistry and Biochemistry The Ohio State University 100 West 18th Ave Columbus OH 43210 USA
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32
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Rice AM, Faig A, Wolff DE, King SB. Sodium borohydride and thiol mediated nitrite release from nitroaromatic antibiotics. Bioorg Med Chem Lett 2021; 48:128245. [PMID: 34242759 DOI: 10.1016/j.bmcl.2021.128245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/24/2021] [Accepted: 06/30/2021] [Indexed: 01/08/2023]
Abstract
Nitroaromatic antibiotics are used to treat a variety of bacterial and parasitic infections. These prodrugs require reductive bioactivation for activity, which provides a pathway for the release of nitrogen oxide species such as nitric oxide, nitrite, and/or nitroxyl. Using sodium borohydride and 2-aminoethanol as model reductants, this work examines release of nitrogen oxide species from various nitroaromatic compounds through several characterization methods. Specifically, 4- and 5-nitroimidazoles reproducibly generate higher amounts of nitrite (not nitric oxide or nitroxyl) than 2-nitroimidazoles during the reaction of model hydride donors or thiols. Mass spectrometric analysis shows clean formation of products resulting from nucleophile addition and nitro group loss. 2-Nitrofurans generate nitrite upon addition of sodium borohydride or 2-aminoethanethiol, but these complex reactions do not produce clean organic products. A mechanism that includes nucleophile addition to the carbon βto the nitro group to generate a nitronate anion followed by protonation and nitrous acid elimination explains the observed products and labeling studies. These systematic studies give a better understanding of the release mechanisms of nitrogen oxide species from these compounds allowing for the design of more efficient therapeutics.
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Affiliation(s)
- Allison M Rice
- Wake Forest University, Department of Chemistry, Winston-Salem, NC 27101, United States of America
| | - Allison Faig
- Wake Forest University, Department of Chemistry, Winston-Salem, NC 27101, United States of America
| | - David E Wolff
- Wake Forest University, Department of Chemistry, Winston-Salem, NC 27101, United States of America
| | - S Bruce King
- Wake Forest University, Department of Chemistry, Winston-Salem, NC 27101, United States of America.
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33
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Pokidova OV, Kormukhina AY, Kotelnikov AI, Rudneva TN, Lyssenko KA, Sanina NA. Features of the decomposition of cationic nitrosyl iron complexes with N-ethylthiourea and penicillamine ligands in the presence of albumin. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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34
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Cai Z, Tao W, Moore CE, Zhang S, Wade CR. Direct NO Reduction by a Biomimetic Iron(II) Pyrazolate MOF. Angew Chem Int Ed Engl 2021; 60:21221-21225. [PMID: 34342117 DOI: 10.1002/anie.202108095] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Indexed: 11/11/2022]
Abstract
A novel metal-organic framework (MOF) containing one-dimensional, Fe2+ chains bridged by dipyrazolate linkers and N,N-dimethylformamide (DMF) ligands has been synthesized. The unusual chain-type metal nodes feature accessible coordination sites on adjacent metal centers, resulting in motifs that are reminiscent of the active sites in non-heme diiron enzymes. The MOF facilitates direct reduction of nitric oxide (NO), producing nearly quantitative yields of nitrous oxide (N2 O) and emulating the reactivity of flavodiiron nitric oxide reductases (FNORs). The ferrous form of the MOF can be regenerated via a synthetic cycle involving reduction with cobaltocene (CoCp2 ) followed by reaction with trimethylsilyl triflate (TMSOTf).
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Affiliation(s)
- Zhongzheng Cai
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Wenjie Tao
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Shiyu Zhang
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
| | - Casey R Wade
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Ave, Columbus, OH, 43210, USA
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35
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Investigation of the interaction of the cationic nitrosyl iron complex [Fe(SC(NH2)2)2(NO)2]+ with molecular oxygen. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120361] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Nowaczyk A, Kowalska M, Nowaczyk J, Grześk G. Carbon Monoxide and Nitric Oxide as Examples of the Youngest Class of Transmitters. Int J Mol Sci 2021; 22:ijms22116029. [PMID: 34199647 PMCID: PMC8199767 DOI: 10.3390/ijms22116029] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/29/2021] [Accepted: 05/31/2021] [Indexed: 12/27/2022] Open
Abstract
The year 2021 is the 100th anniversary of the confirmation of the neurotransmission phenomenon by Otto Loewi. Over the course of the hundred years, about 100 neurotransmitters belonging to many chemical groups have been discovered. In order to celebrate the 100th anniversary of the confirmation of neurotransmitters, we present an overview of the first two endogenous gaseous transmitters i.e., nitric oxide, and carbon monoxide, which are often termed as gasotransmitters.
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Affiliation(s)
- Alicja Nowaczyk
- Department of Organic Chemistry, Faculty of Pharmacy, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 2 dr. A. Jurasza St., 85-094 Bydgoszcz, Poland;
- Correspondence: ; Tel.: +48-52-585-3904
| | - Magdalena Kowalska
- Department of Organic Chemistry, Faculty of Pharmacy, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 2 dr. A. Jurasza St., 85-094 Bydgoszcz, Poland;
| | - Jacek Nowaczyk
- Department of Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarina St., 87-100 Toruń, Poland;
| | - Grzegorz Grześk
- Department of Cardiology and Clinical Pharmacology, Faculty of Health Sciences, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 75 Ujejskiego St., 85-168 Bydgoszcz, Poland;
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37
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Parvin N, Sen N, Muhasina PV, Tothadi S, Parameswaran P, Khan S. The diverse reactivity of NOBF 4 towards silylene, disilene, germylene and stannylene. Chem Commun (Camb) 2021; 57:5008-5011. [PMID: 33949489 DOI: 10.1039/d1cc01034d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The reactivity of NOBF4 towards silylene, disilene, germylene, stannylenes has been described. Smooth syntheses of compounds of composition [PhC(NtBu)2E(= O → BF3)N(SiMe3)2, E = Si (3) and Ge (4)] were accomplished from the corresponding tetrylenes. An unusual heterocycle (10) featuring B, Sn, N, P, and O atoms was obtained from the reaction with a stannylene, while a 1,2-vicinal anti addition of fluoride was observed with a disilene (12).
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Affiliation(s)
- Nasrina Parvin
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune-411008, India.
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38
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Liu J, Xu Y. NO x absorption and conversion by ionic liquids. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124503. [PMID: 33218907 DOI: 10.1016/j.jhazmat.2020.124503] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/02/2020] [Accepted: 11/05/2020] [Indexed: 06/11/2023]
Abstract
Ionic liquids (ILs) can be used as absorbents and catalysts for NOx absorption and conversion due to their low toxicity, low energy consumption and excellent reusability. The capacity and absorption mechanism of NOx absorption by ILs are presented in this paper. Generally, NOx are physically absorbed by conventional ILs such as imidazolium-based ILs. The absorption capacity is as follows: NO2>NO>N2O, which is in good agreement with the binding energy between NOx and ILs. Furthermore, low temperature, high pressure and large cation volume are favorable for NOx absorption. The strategies of enhancing NOx capacity through functionalized ILs with metal-containing anions (e.g. [FeCl4]2-), amine groups, sulfonate and carboxylate anions are also concluded. Active N or O sites in functionalized ILs can react with the dimer of NO (N2O2), resulting in high capacity. Moreover, introducing electron-withdrawing substituents such as chlorine and bromine into carboxylate or sulfonate anions reduces desorption residue. Besides NOx absorption, ILs with [NO3]- can activate NO and efficiently catalyze its conversion into HNO3 in the presence of O2 and H2O, and have better performance than ILs with [Cl]-, [Ac]- and [CF3SO3]-, which is attributed to the strong oxidization capability of [NO3]-. In addition, low temperature and high O2 content can further improve NO conversion.
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Affiliation(s)
- Jiajia Liu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Yingjie Xu
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China.
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39
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Scherer TM, Hartenbach I, Lissner F, Schwederski B, Hübner R, Fiedler J, Záliš S, Sarkar B, Kaim W. Analysis of Multiple Redox Sites in Complexes [M(C
5
Me
5
)(Q)(NO)]
n
, M=Ru or Os, Q=
o
‐Quinones. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thomas M. Scherer
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
| | - Ingo Hartenbach
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
| | - Falk Lissner
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
| | - Brigitte Schwederski
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
| | - Ralph Hübner
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
| | - Jan Fiedler
- The Czech Academy of Sciences J. Heyrovský Institute of Physical Chemistry Dolejškova 3 18223 Prague Czech Republic
| | - Stanislav Záliš
- The Czech Academy of Sciences J. Heyrovský Institute of Physical Chemistry Dolejškova 3 18223 Prague Czech Republic
| | - Biprajit Sarkar
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
| | - Wolfgang Kaim
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55 D-70550 Stuttgart Germany
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40
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Beckmann F, Kass D, Keck M, Yelin S, Hoof S, Cula B, Herwig C, Krause KB, Ar D, Limberg C. High‐spin square planar iron(II) alkali metal siloxide complexes – influence of the alkali metal and reactivity towards O
2
and NO. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fabian Beckmann
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Dustin Kass
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Matthias Keck
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Stefan Yelin
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Santina Hoof
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Beatrice Cula
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Christian Herwig
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Konstantin B. Krause
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Deniz Ar
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Christian Limberg
- Institut für Chemie Humboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
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41
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Sanina N, Kozub G, Kondrat’eva T, Stupina T, Balakina A, Terent’ev A, Sulimenkov I, Ovanesyan N, Dorovatovskii P, Khrustalev V, Aldoshin S. Structure, nitric oxide (NO) generation and antitumor activity of binuclear tetranitrosyl iron complex with 4-aminothiophenolyl as nitrosyl ferredoxins mimic. J COORD CHEM 2021. [DOI: 10.1080/00958972.2020.1869222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- N.A. Sanina
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
- Faculty of Fundamental Physicochemical Engineering, Moscow State University, Moscow, Russia
- Scientific and Educational Center “Medical Chemistry”, Moscow State Regional University, Mytishchi, Moscow Region, Russia
| | - G.I. Kozub
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - T.A. Kondrat’eva
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - T.S. Stupina
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
- Scientific and Educational Center “Medical Chemistry”, Moscow State Regional University, Mytishchi, Moscow Region, Russia
| | - A.A. Balakina
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
- Scientific and Educational Center “Medical Chemistry”, Moscow State Regional University, Mytishchi, Moscow Region, Russia
| | - A.A. Terent’ev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
- Faculty of Fundamental Physicochemical Engineering, Moscow State University, Moscow, Russia
- Scientific and Educational Center “Medical Chemistry”, Moscow State Regional University, Mytishchi, Moscow Region, Russia
| | - I.V. Sulimenkov
- Chernogolovka Branch of the N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Chernogolovkа, Russia
| | - N.S. Ovanesyan
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | | | - V.N. Khrustalev
- National Research Center “Kurchatov Institute”, Moscow, Russia
- Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - S.M. Aldoshin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
- Faculty of Fundamental Physicochemical Engineering, Moscow State University, Moscow, Russia
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42
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Phu PN, Gutierrez CE, Kundu S, Sokaras D, Kroll T, Warren TH, Stieber SCE. Quantification of Ni-N-O Bond Angles and NO Activation by X-ray Emission Spectroscopy. Inorg Chem 2021; 60:736-744. [PMID: 33373520 DOI: 10.1021/acs.inorgchem.0c02724] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of β-diketiminate Ni-NO complexes with a range of NO binding modes and oxidation states were studied by X-ray emission spectroscopy (XES). The results demonstrate that XES can directly probe and distinguish end-on vs side-on NO coordination modes as well as one-electron NO reduction. Density functional theory (DFT) calculations show that the transition from the NO 2s2s σ* orbital has higher intensity for end-on NO coordination than for side-on NO coordination, whereas the 2s2s σ orbital has lower intensity. XES calculations in which the Ni-N-O bond angle was fixed over the range from 80° to 176° suggest that differences in NO coordination angles of ∼10° could be experimentally distinguished. Calculations of Cu nitrite reductase (NiR) demonstrate the utility of XES for characterizing NO intermediates in metalloenzymes. This work shows the capability of XES to distinguish NO coordination modes and oxidation states at Ni and highlights applications in quantifying small molecule activation in enzymes.
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Affiliation(s)
- Phan N Phu
- Department of Chemistry & Biochemistry, California State Polytechnic University, Pomona, California 91768, United States
| | - Carlos E Gutierrez
- Department of Chemistry & Biochemistry, California State Polytechnic University, Pomona, California 91768, United States
| | - Subrata Kundu
- Department of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057, United States.,School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Thomas Kroll
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Timothy H Warren
- Department of Chemistry, Georgetown University, Box 571227, Washington, D.C. 20057, United States
| | - S Chantal E Stieber
- Department of Chemistry & Biochemistry, California State Polytechnic University, Pomona, California 91768, United States
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43
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Updating NO •/HNO interconversion under physiological conditions: A biological implication overview. J Inorg Biochem 2020; 216:111333. [PMID: 33385637 DOI: 10.1016/j.jinorgbio.2020.111333] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/13/2020] [Accepted: 12/05/2020] [Indexed: 12/12/2022]
Abstract
Azanone (HNO/NO-), also called nitroxyl, is a highly reactive compound whose biological role is still a matter of debate. A key issue that remains to be clarified regarding HNO and its biological activity is that of its endogenous formation. Given the overlap of the molecular targets and reactivity of nitric oxide (NO•) and HNO, its chemical biology was perceived to be similar to that of NO• as a biological signaling agent. However, despite their closely related reactivity, NO• and HNO's biochemical pathways are quite different. Moreover, the reduction of nitric oxide to azanone is possible but necessarily coupled to other reactions, which drive the reaction forward, overcoming the unfavorable thermodynamic barrier. The mechanism of this NO•/HNO interplay and its downstream effects in different contexts were studied recently, showing that more than fifteen moderate reducing agents react with NO• producing HNO. Particularly, it is known that the reaction between nitric oxide and hydrogen sulfide (H2S) produces HNO. However, this rate constant was not reported yet. In this work, firstly the NO•/H2S effective rate constant was measured as a function of the pH. Then, the implications of these chemical (non-enzymatic), biologically compatible, routes to endogenous HNO formation was discussed. There is no doubt that HNO could be (is?) a new endogenously produced messenger that mediates specific physiological responses, many of which were attributed yet to direct NO• effects.
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44
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Wang Y, Wang Z, Yang J, Li X. Precise Spin Manipulation of Single Molecule Positioning on Graphene by Coordination Chemistry. J Phys Chem Lett 2020; 11:9819-9827. [PMID: 33156628 DOI: 10.1021/acs.jpclett.0c03026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Precise spin manipulation of single molecules is crucial for future molecular spintronics. However, it has been a formidable challenge due to the complexities of the strong molecule-substrate coupling as well as the response of the molecule to external stimulus. Here we demonstrate by density functional theory calculations that precise spin manipulation can be achieved by extra CO and NO molecules coordination to transition metal phthalocyanine (TMPc) (TM = Co, Fe, Mn) molecules deposited on metal-supported graphene; the spins of TMPc molecules are switched from S to S - 1/2 (|S - 1|) after NO (CO) coordination. With the aid of a combination of molecular orbitals (MO) theory and recently developed principal interacting spin-orbital (PISO) analysis, the impacts of NO and CO coordinations on both adsorption configuration and spin polarization of TMPc are well elucidated. We reveal the different coordination geometries that CO always coordinates axially to the TM center with a linear geometry, while NO prefers a bent geometry, which can be attributed to the competition between the σ- and π-type interactions according to the PISO analysis. Particularly, the NO-MnPc complex adopts a bent geometry deviating from the prediction by the existing Enemark-Feltham formalism. In addition, MO analysis suggests that during the CO coordination, the simultaneous existence of σ-donation and π-back-donation promotes electrons flowing from the dz2 to partially occupied dπ (dxz and dxz) orbitals with subsequent reordering of the TM d-orbitals, resulting in the spin transition of S → |S - 1|. In comparison, given that NO is regarded as NO- when it adopts a bent geometry coordinating to the TM center, the complete (CoPc) or partial (FePc and MnPc) quenching of the molecular spins caused by NO coordination is attributed to the electron transfer from TM to NO. These theoretical findings provide important insights into relevant experiments and offer an effective design strategy to realize underlying single-molecular spintronics devices integrated with two-dimensional materials.
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Affiliation(s)
- Yu Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Zheng Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
| | - Jinlong Yang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
| | - Xiaoguang Li
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China
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45
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Gimferrer M, Van der Mynsbrugge J, Bell AT, Salvador P, Head-Gordon M. Facing the Challenges of Borderline Oxidation State Assignments Using State-of-the-Art Computational Methods. Inorg Chem 2020; 59:15410-15420. [DOI: 10.1021/acs.inorgchem.0c02405] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martí Gimferrer
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Jeroen Van der Mynsbrugge
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Alexis T. Bell
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Pedro Salvador
- Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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46
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Alday J, Mazzeo A, Suarez S. Selective detection of gasotransmitters using fluorescent probes based on transition metal complexes. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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47
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Giri B, Saini T, Kumbhakar S, Selvan K K, Muley A, Misra A, Maji S. Near-IR light-induced photorelease of nitric oxide (NO) on ruthenium nitrosyl complexes: formation, reactivity, and biological effects. Dalton Trans 2020; 49:10772-10785. [PMID: 32706352 DOI: 10.1039/d0dt01788d] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polypyridyl backbone nitrosyl complexes of ruthenium with the molecular framework [RuII(antpy)(bpy)NO+/˙]n+ [4](PF6)3 (n = 3), [4](PF6)2 (n = 2), where antpy = 4'-(anthracene-9-yl)-2,2':6',2''-terpyridine and bpy = 2,2'-bipyridine, were synthesized via a stepwise synthetic route from the chloro precursor [RuII(antpy)(bpy)(Cl)](PF6) [1](PF6) and [RuII(antpy)(bpy)(CH3CN)](PF6)2 [2](PF6)2 and [RuII(antpy)(bpy)(NO2)](PF6) [3](PF6). After column chromatographic purification, all the synthesized complexes were fully characterized using different spectroscopic and analytical techniques including mass spectroscopy, 1H NMR, FT-IR and UV-vis spectrophotometry. The Ru-NO stretching frequency of [4](PF6)3 was observed at 1941 cm-1, which suggests moderately strong Ru-NO bonding. A massive shift in the νNO frequency occurred at Δν = 329 cm-1 (solid) upon reducing [4](PF6)3 to [4](PF6)2. To understand the molecular integrity of the complexes, the structure of [3](PF6) was successfully determined by X-ray crystallography. The redox properties of [4](PF6)3 were thoroughly investigated together with the other precursor complexes. The rate constants for the first-order photo-release of NO from [4](PF6)3 and [4](PF6)2 were determined to be 8.01 × 10-3 min-1 (t1/2 ∼ 86 min) and 3.27 × 10-2 min-1 (t1/2 ∼ 21 min), respectively, when exposed to a 200 W Xenon light. Additionally, the photo-cleavage of Ru-NO occurred within ∼2 h when [4](PF6)3 was irradiated with an IR light source (>700 nm) at room temperature. The first-order rate constant of 9.4 × 10-3 min-1 (t1/2 ∼ 73 min) shows the efficacy of the system and its capability to release NO in the photo-therapeutic window. The released NO triggered by light was trapped by reduced myoglobin, a biologically relevant target protein. The one-electron reduction of [4](PF6)3 to [4](PF6)2 was systematically carried out chemically (hydrazine hydrate), electrochemically and biologically. In the biological reduction, it was found that the reduction is much slower with double-stranded DNA compared to a single-stranded oligonucleotide (CAAGGCCAACCGCGAGAAGATGAC). Moreover, [4](PF6)3 exhibited significant photo-toxicity to the VCaP prostate cancer cell line upon irradiation with a visible light source (IC50 ∼ 8.97 μM).
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Affiliation(s)
- Bishnubasu Giri
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
| | - Taruna Saini
- Department of Biotechnology, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Sadananda Kumbhakar
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
| | - Kalai Selvan K
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
| | - Arabinda Muley
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
| | - Ashish Misra
- Department of Biotechnology, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Somnath Maji
- Department of Chemistry, Indian Institute of Technology, Hyderabad, Kandi, Sangareddy 502285, Telangana, India.
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48
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Jiang D, Cheng L, Xue Y, Chen C, Wang C, Yang G, Xu A, Yang Y, Gao Y, Zhang W. Modulation of the lifespan of C. elegans by the controlled release of nitric oxide. Chem Sci 2020; 11:8785-8792. [PMID: 34123131 PMCID: PMC8163451 DOI: 10.1039/c9sc06072c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The frontier of nitric oxide biology has gradually shifted from mechanism elucidation to biomanipulation, e.g. cell-proliferation promotion, cell-apoptosis induction, and lifespan modulation. This warrants biocompatible nitric oxide (NO) donating materials, whose NO release is not only controlled by a bioorthogonal trigger, but also self-calibrated allowing real-time monitoring and hence an onset/offset of the NO release. Additionally, the dose of NO release should be facilely adjusted in a large dynamic range; flux and the dose are critical to the biological outcome of NO treatment. Via self-assembly of a PEGylated small-molecule NO donor, we developed novel NO-donating nanoparticles (PEG-NORM), which meet all the aforementioned criteria. We showcased that a low flux of NO induced cell proliferation, while a high flux induced cell oxidative stress and, ultimately, death. Notably, PEG-NORM was capable of efficiently modulating the lifespan of C. elegans. The average lifespan of C. elegans could be fine-tuned to be as short as 15.87 ± 0.29 days with a high dose of NO, or as long as 21.13 ± 0.41 days with a low dose of NO, compared to an average life-span of 18.87 ± 0.46 days. Thus, PEG-NORM has broad potential in cell manipulation and life-span modulation and could drive the advancement of NO biology and medicine.
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Affiliation(s)
- Dawei Jiang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering Shanghai China
| | - Lei Cheng
- School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China Hefei Anhui 230026 China
| | - Yudong Xue
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering Shanghai China
| | - Chao Chen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Chaochao Wang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering Shanghai China
| | - Guoliang Yang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering Shanghai China
| | - An Xu
- School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China Hefei Anhui 230026 China
| | - Youjun Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Yun Gao
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering Shanghai China
| | - Weian Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering Shanghai China
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49
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Pecak J, Eder W, Stöger B, Realista S, Martinho PN, Calhorda MJ, Linert W, Kirchner K. Synthesis, Characterization, and Catalytic Reactivity of {CoNO} 8 PCP Pincer Complexes. Organometallics 2020; 39:2594-2601. [PMID: 32742055 PMCID: PMC7388324 DOI: 10.1021/acs.organomet.0c00167] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Indexed: 11/28/2022]
Abstract
![]()
The reaction of coordinatively
unsaturated Co(II) PCP pincer complexes
with nitric oxide leads to the formation of new, air-stable, diamagnetic mono nitrosyl compounds. The synthesis
and characterization of five- and four-coordinate Co(III) and Co(I)
nitrosyl pincer complexes based on three different ligand scaffolds
is described. Passing NO through a solution of [Co(PCPNMe-iPr)Cl], [Co(PCPO-iPr)Cl] or [Co(PCPCH2-iPr)Br] led to the
formation of the low-spin complex [Co(PCP-iPr)(NO)X]
with a strongly bent NO ligand. Treatment of the latter species with
(X = Cl, Br) AgBF4 led to chloride abstraction and formation
of cationic square-planar Co(I) complexes of the type [Co(PCP-iPr)(NO)]+ featuring a linear NO group. This
reaction could be viewed as a formal two electron reduction of the
metal center by the NO radical from Co(III) to Co(I), if NO is counted
as NO+. Hence, these systems can be described as {CoNO}8 according to the Enemark–Feltham convention. X-ray
structures, spectroscopic and electrochemical data of all nitrosyl
complexes are presented. Preliminary studies show that [Co(PCPNMe-iPr)(NO)]+ catalyzes efficiently
the reductive hydroboration of nitriles with pinacolborane (HBpin)
forming an intermediate {CoNO}8 hydride species.
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Affiliation(s)
- Jan Pecak
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Wolfgang Eder
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Berthold Stöger
- X-Ray Center, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Sara Realista
- Instituto de Tecnologia Química e Biológica António Xavier, ITQB NOVA, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Paulo N Martinho
- BioISI - Biosystems and Integrative Sciences Institute, DQB, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Maria José Calhorda
- BioISI - Biosystems and Integrative Sciences Institute, DQB, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Wolfgang Linert
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
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50
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Ampßler T, Monsch G, Popp J, Riggenmann T, Salvador P, Schröder D, Klüfers P. Not Guilty on Every Count: The "Non-Innocent" Nitrosyl Ligand in the Framework of IUPAC's Oxidation-State Formalism. Angew Chem Int Ed Engl 2020; 59:12381-12386. [PMID: 32339395 PMCID: PMC7384168 DOI: 10.1002/anie.202003122] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Indexed: 12/22/2022]
Abstract
Nitrosyl-metal bonding relies on the two interactions between the pair of N-O-π* and two of the metal's d orbitals. These (back)bonds are largely covalent, which makes their allocation in the course of an oxidation-state determination ambiguous. However, apart from M-N-O-angle or net-charge considerations, IUPAC's "ionic approximation" is a useful tool to reliably classify nitrosyl metal complexes in an orbital-centered approach.
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Affiliation(s)
- Torsten Ampßler
- Department Chemie der Ludwigs-Maximilians-UniversitätButenandtstraße 5–1381377MünchenGermany
| | - Georg Monsch
- Department Chemie der Ludwigs-Maximilians-UniversitätButenandtstraße 5–1381377MünchenGermany
| | - Jens Popp
- Department Chemie der Ludwigs-Maximilians-UniversitätButenandtstraße 5–1381377MünchenGermany
| | - Tobias Riggenmann
- Department Chemie der Ludwigs-Maximilians-UniversitätButenandtstraße 5–1381377MünchenGermany
| | - Pedro Salvador
- Institut de Química Computacional i Catàlisi i Departament de QuímicaUniversitat de GironaMaria Aurèlia Capmany 6917003GironaSpain
| | - Daniel Schröder
- Department Chemie der Ludwigs-Maximilians-UniversitätButenandtstraße 5–1381377MünchenGermany
| | - Peter Klüfers
- Department Chemie der Ludwigs-Maximilians-UniversitätButenandtstraße 5–1381377MünchenGermany
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