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Das S, Kumar P. Exploring the carbonic anhydrase-mimetic [(PMDTA) 2ZnII2(OH -) 2] 2+ for nitric oxide monooxygenation. Dalton Trans 2024; 53:6173-6177. [PMID: 38501600 DOI: 10.1039/d4dt00407h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
In biology, nitrite (NO2-) serves as a storage pool of nitric oxide (NO); however, the formation of NO2- from NO is still under investigation. Here, we report the NO monooxygenation (NOM) reaction of a ZnII-hydroxide complex (1), producing a ZnII-nitrito complex {2, (ZnII-NO2-)} + H2.
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Affiliation(s)
- Sandip Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
| | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
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2
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Anju BS, Nair NR, Kundu S. Nitrite and Nitric Oxide Interconversion at Mononuclear Copper(II): Insight into the Role of the Red Copper Site in Denitrification. Angew Chem Int Ed Engl 2023; 62:e202311523. [PMID: 37800603 DOI: 10.1002/anie.202311523] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/07/2023]
Abstract
Nitrite (NO2 - ) and nitric oxide (NO) interconversion is crucial for maintaining optimum NO flux in mammalian physiology. Herein we demonstrate that [L2 CuII (nitrite)]+ moieties (in 2 a and 2 b; where, L = Me2 PzPy and Me2 PzQu) with distorted octahedral geometry undergo facile reduction to provide tetrahedral [L2 CuI ]+ (in 3 a and 3 b) and NO in the presence of biologically relevant reductants, such as 4-methoxy-2,6-di-tert-butylphenol (4-MeO-2,6-DTBP, a tyrosine model) and N-benzyl-1,4-dihydronicotinamide (BNAH, a NAD(P)H model). Interestingly, the reaction of excess NO gas with [L2 CuII (MeCN)2 ]2+ (in 1 a) provides a putative {CuNO}10 species, which is effective in mediating the nitrosation of various nucleophiles, such as thiol and amine. Generation of the transient {CuNO}10 species in wet acetonitrile leads to NO2 - as assessed by Griess assay and 14 N/15 N-FTIR analyses. A detailed study reveals that the bidirectional NOx -reactivity, namely, nitrite reductase (NIR) and NO oxidase (NOO), at a common CuII site, is governed by the geometric-preference-driven facile CuII /CuI redox process. Of broader interest, this study not only highlights potential strategies for the design of copper-based catalysts for nitrite reduction, but also strengthens the previous postulates regarding the involvement of red copper proteins in denitrification.
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Affiliation(s)
- Balakrishnan S Anju
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-Tvm) Thiruvananthapuram, 695551, Kerala, India
| | - Neeraja R Nair
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-Tvm) Thiruvananthapuram, 695551, Kerala, India
| | - Subrata Kundu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-Tvm) Thiruvananthapuram, 695551, Kerala, India
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3
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C S AK, Das S, Kulbir, Bhardwaj P, Sk MP, Kumar P. Mechanistic insights into nitric oxide oxygenation (NOO) reactions of {CrNO} 5 and {CoNO} 8. Dalton Trans 2023; 52:16492-16499. [PMID: 37874255 DOI: 10.1039/d3dt03177b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Here, we report the nitric oxide oxygenation (NOO) reactions of two distinct metal nitrosyls {Co-nitrosyl (S = 0) vs. Cr-nitrosyl (S = 1/2)}. In this regard, we synthesized and characterized [(BPMEN)Co(NO)]2+ ({CoNO}8, 1) to compare its NOO reaction with that of [(BPMEN)Cr(NO)(Cl-)]+ ({CrNO}5, 2), having a similar ligand framework. Kinetic measurements showed that {CrNO}5 is thermally more stable than {CoNO}8. Complexes 1 and 2, upon reaction with the superoxide anion (O2˙-), generate [(BPMEN)CoII(NO2-)2] (CoII-NO2-, 3) and [(BPMEN)CrIII(NO2-)Cl-]+ (CrIII-NO2-, 4), respectively, with O2 evolution. Furthermore, analysis of these NOO reactions and tracking of the N-atom using 15N-labeled NO (15NO) revealed that the N-atoms of 3 (CoII-15NO2-) and 4 (CrIII-15NO2-) derive from the nitrosyl (15NO) moieties of 1 and 2, respectively. This work represents a comparative study of oxidation reactions of {CoNO}8vs. {CrNO}5, showing different rates of the NOO reactions due to different thermal stability. To complete the NOM cycle, we reacted 3 and 4 with NO, and surprisingly, only 3 generated {CoNO}8 species, while 4 was unreactive towards NO. Furthermore, the phenol ring nitration test, performed using 2,4-di-tert-butylphenol (2,4-DTBP), suggested the presence of a proposed peroxynitrite (PN) intermediate in the NOO reactions of 1 and 2.
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Affiliation(s)
- Akshaya Keerthi C S
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
| | - Sandip Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
| | - Kulbir
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
| | - Prabhakar Bhardwaj
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
| | - Md Palashuddin Sk
- Department of Chemistry, Aligarh Muslim University (AMU) Aligarh, Uttar Pradesh 202001, India
| | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India.
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4
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Kolliyedath G, Chattopadhyay T, Mondal A, Panangattu A, Muralikrishnan G, Kundu S. Modeling Reactivity of Nitrite and Nitrous Acid at a Phenolate Bridged Dizinc(II) Site: Insights into NO Signaling at Zinc. Chemistry 2023; 29:e202301409. [PMID: 37492966 DOI: 10.1002/chem.202301409] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 07/27/2023]
Abstract
Although nitrite-to-NO transformation at various transition metals including Fe and Cu are relatively well explored, examples of such a reaction at the redox-inactive zinc(II) site are limited. The present report aims to gain insights into the reactivity of nitrite anions, nitrous acid (HONO), and organonitrite (RONO) at a dizinc(II) site. A phenolate-bridged dizinc(II)-aqua complex [LH ZnII (OH2 )]2 (ClO4 )2 (1H -Aq, where LH =tridentate N,N,O-donor monoanionic ligand) is illustrated to react with t BuONO to provide a metastable arene-nitrosonium charge-transfer complex 2H . UV-vis, FTIR, multinuclear NMR, and elemental analyses suggests the presence of a 2 : 1 arene-nitrosonium moiety. Furthermore, the reactivity of a structurally characterized zinc(II)-nitrite complex [LH ZnII (ONO)]2 (1H -ONO) with a proton-source demonstrates HONO reactivity at the dizinc(II) site. Reactivity of both RONO (R=alkyl/H) at the phenolate-bridged dizinc(II) site provides NO+ charge-transfer complex 2H . Subsequently, the reactions of 2H with exogenous reductants (such as ferrocene, thiol, phenol, and catechol) have been illustrated to generate NO. In addition, NO yielding reactivity of [LH ZnII (ONO)]2 (1H -ONO) in the presence of the above-mentioned reductants have been compared with the reactions of complex 2H . Thus, this report sheds light on the transformations of NO2 - /RONO (R=alkyl/H) to NO/NO+ at the redox-inactive zinc(II) coordination motif.
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Affiliation(s)
- Gayathri Kolliyedath
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), Thiruvananthapuram, 695551, India
| | - Taraknath Chattopadhyay
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), Thiruvananthapuram, 695551, India
| | - Aditesh Mondal
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), Thiruvananthapuram, 695551, India
| | - Aiswarya Panangattu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), Thiruvananthapuram, 695551, India
| | - Girish Muralikrishnan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), Thiruvananthapuram, 695551, India
| | - Subrata Kundu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER-TVM), Thiruvananthapuram, 695551, India
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5
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Sahana T, Valappil AK, Amma ASPR, Kundu S. NO Generation from Nitrite at Zinc(II): Role of Thiol Persulfidation in the Presence of Sulfane Sulfur. ACS ORGANIC & INORGANIC AU 2023; 3:246-253. [PMID: 37810413 PMCID: PMC10557059 DOI: 10.1021/acsorginorgau.3c00004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 10/10/2023]
Abstract
Nitrite-to-NO transformation is of prime importance due to its relevance in mammalian physiology. Although such a one-electron reductive transformation at various redox-active metal sites (e.g., Cu and Fe) has been illustrated previously, the reaction at the [ZnII] site in the presence of a sacrificial reductant like thiol has been reported to be sluggish and poorly understood. Reactivity of [(Bn3Tren)ZnII-ONO](ClO4) (1), a nitrite-bound model of the tripodal active site of carbonic anhydrase (CA), toward various organic probes, such as 4-tert-butylbenzylthiol (tBuBnSH), 2,4-di-tert-butylphenol (2,4-DTBP), and 1-fluoro-2,4-dinitrobenzene (F-DNB), reveals that the ONO-moiety in the [ZnII]-nitrite coordination motif of complex 1 acts as a mild electrophile. tBuBnSH reacts mildly with nitrite at a [ZnII] site to provide S-nitrosothiol tBuBnSNO prior to the release of NO in 10% yield, whereas the phenolic substrate 2,4-DTBP does not yield the analogous O-nitrite compound (ArONO). The presence of sulfane sulfur (S0) species such as elemental sulfur (S8) and organic polysulfides (tBuBnSnBntBu) during the reaction of tBuBnSH and [ZnII]-nitrite (1) assists the nitrite-to-NO conversion to provide NO yields of 65% (for S8) and 76% (for tBuBnSnBntBu). High-resolution mass spectrometry (HRMS) analyses on the reaction of [ZnII]-nitrite (1), tBuBnSH, and S8 depict the formation of zinc(II)-persulfide species [(Bn3Tren)ZnII-Sn-BntBu]+ (where n = 2, 3, 4, 5, and 6). Trapping of the persulfide species (tBuBnSS-) with 1-fluoro-2,4-dinitrobenzene (F-DNB) confirms its intermediacy. The significantly higher nucleophilicity of persulfide species (relative to thiol/thiolate) is proposed to facilitate the reaction with the mildly electrophilic [ZnII]-nitrite (1) complex. Complementary analyses, including multinuclear NMR, electrospray ionization-MS, UV-vis, and trapping of reactive S-species, provide mechanistic insights into the sulfane sulfur-assisted reactions between thiol and nitrite at the tripodal [ZnII]-site. These findings suggest the critical influential roles of various reactive sulfur species, such as sulfane sulfur and persulfides, in the nitrite-to-NO conversion.
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Affiliation(s)
- Tuhin Sahana
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
| | - Adwaith K. Valappil
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
| | - Anaswar S. P. R. Amma
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
| | - Subrata Kundu
- School of Chemistry, Indian
Institute of Science Education and Research Thiruvananthapuram
(IISER-TVM), Thiruvananthapuram 695551, India
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6
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Liao CJ, Tseng YT, Cheng YA, Dayao LA, Iffland-Mühlhaus L, Gee LB, Ribson RD, Chan TS, Apfel UP, Lu TT. Ligand Control of Dinitrosyl Iron Complexes for Selective Superoxide-Mediated Nitric Oxide Monooxygenation and Superoxide-Dioxygen Interconversion. J Am Chem Soc 2023; 145:20389-20402. [PMID: 37683125 DOI: 10.1021/jacs.3c05577] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
Through nitrosylation of [Fe-S] proteins, or the chelatable iron pool, a dinitrosyl iron unit (DNIU) [Fe(NO)2] embedded in the form of low-molecular-weight/protein-bound dinitrosyl iron complexes (DNICs) was discovered as a metallocofactor assembled under inflammatory conditions with elevated levels of nitric oxide (NO) and superoxide (O2-). In an attempt to gain biomimetic insights into the unexplored transformations of the DNIU under inflammation, we investigated the reactivity toward O2- by a series of DNICs [(NO)2Fe(μ-MePyr)2Fe(NO)2] (1) and [(NO)2Fe(μ-SEt)2Fe(NO)2] (3). During the superoxide-induced conversion of DNIC 1 into DNIC [(K-18-crown-6-ether)2(NO2)][Fe(μ-MePyr)4(μ-O)2(Fe(NO)2)4] (2-K-crown) and a [Fe3+(MePyr)x(NO2)y(O)z]n adduct, stoichiometric NO monooxygenation yielding NO2- occurs without the transient formation of peroxynitrite-derived •OH/•NO2 species. To study the isoelectronic reaction of O2(g) and one-electron-reduced DNIC 1, a DNIC featuring an electronically localized {Fe(NO)2}9-{Fe(NO)2}10 electronic structure, [K-18-crown-6-ether][(NO)2Fe(μ-MePyr)2Fe(NO)2] (1-red), was successfully synthesized and characterized. Oxygenation of DNIC 1-red leads to the similar assembly of DNIC 2-K-crown, of which the electronic structure is best described as paramagnetic with weak antiferromagnetic coupling among the four S = 1/2 {FeIII(NO-)2}9 units and S = 5/2 Fe3+ center. In contrast to DNICs 1 and 1-red, DNICs 3 and [K-18-crown-6-ether][(NO)2Fe(μ-SEt)2Fe(NO)2] (3-red) display a reversible equilibrium of "3 + O2- ⇋ 3-red + O2(g)", which is ascribed to the covalent [Fe(μ-SEt)2Fe] core and redox-active [Fe(NO)2] unit. Based on this study, the supporting/bridging ligands in dinuclear DNIC 1/3 (or 1-red/3-red) control the selective monooxygenation of NO and redox interconversion between O2- and O2 during reaction with O2- (or O2).
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Affiliation(s)
- Cheng-Jhe Liao
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Ting Tseng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-An Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Loise Ann Dayao
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Linda Iffland-Mühlhaus
- Department of Chemistry and Biochemistry, Inorganic Chemistry I, Ruhr-Universität Bochum, 44801 Bochum, Germany
| | - Leland B Gee
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Ryan D Ribson
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Ting-Shan Chan
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Ulf-Peter Apfel
- Department of Chemistry and Biochemistry, Inorganic Chemistry I, Ruhr-Universität Bochum, 44801 Bochum, Germany
- Department of Electrosynthesis, Fraunhofer UMSICHT, 46047 Oberhausen, Germany
| | - Tsai-Te Lu
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Chemistry, Chung Yuan Christian University, Taoyuan 32023, Taiwan
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7
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Keerthi C S A, Beegam S, Das S, Bhardwaj P, Ansari M, Singh K, Kumar P. Nitric Oxide Oxygenation Reactions of Cobalt-Peroxo and Cobalt-Nitrosyl Complexes. Inorg Chem 2023; 62:7385-7392. [PMID: 37126425 DOI: 10.1021/acs.inorgchem.3c00639] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Here, we report a comparative study of nitric oxide oxidation (NOO) reactions of CoIII-peroxo (CoIII-O22-) and Co-nitrosyl ({CoNO}8) complexes bearing the same N4-donor ligand (HMTETA) framework. In this regard, we prepared and characterized two new [(HMTETA)CoIII(O22-)]+ (2, S = 2) and [(HMTETA)Co(NO)]2+ (3, S = 1) complexes from [(HMTETA)CoII(CH3CN)2]2+ (1). Both complexes (2 and 3) are characterized by different spectroscopic measurements, including their DFT-optimized structures. Complex 2 produces CoII-nitrato [(HMTETA)CoII(NO3-)]+ (CoII-NO3-, 4) complex in the presence of NO. In contrast, when 3 reacted with a superoxide (O2•-) anion, it generated CoII-nitrito [(HMTETA)CoII(NO2-)]+ (CoII-NO2-, 5) with O2 evolution. Experiments performed using 18/16O-labeled superoxide (18O2•-/16O2•-) showed that O2 originated from the O2•- anion. Both the NOO reactions are believed to proceed via a presumed peroxynitrite (PN) intermediate. Although we did not get direct spectral evidence for the proposed PN species, the mechanistic investigation using 2,4-di-tert-butylphenol indirectly suggests the formation of a PN intermediate. Furthermore, tracking the source of the N-atom in the above NOO reactions using 15N-labeled nitrogen (15NO) revealed N-atoms in 4 (CoII-15NO3-) and 5 (CoII-15NO2-) derived from the 15NO moiety.
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Affiliation(s)
- Akshaya Keerthi C S
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India
| | - Sulthana Beegam
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India
| | - Sandip Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India
| | - Prabhakar Bhardwaj
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India
| | - Mursaleem Ansari
- Department of Chemistry, Indian Institute of Technology (IIT), Bombay 400076, India
| | - Kuldeep Singh
- Department of Applied Chemistry, Amity University, Gwalior 474005, India
| | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Tirupati 517507, India
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8
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Jeong D, Selverstone Valentine J, Cho J. Bio-inspired mononuclear nonheme metal peroxo complexes: Synthesis, structures and mechanistic studies toward understanding enzymatic reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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9
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Kulbir, Das S, Devi T, Goswami M, Yenuganti M, Bhardwaj P, Ghosh S, Chandra Sahoo S, Kumar P. Oxygen atom transfer promoted nitrate to nitric oxide transformation: a step-wise reduction of nitrate → nitrite → nitric oxide. Chem Sci 2021; 12:10605-10612. [PMID: 35003574 PMCID: PMC8666158 DOI: 10.1039/d1sc00803j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 07/01/2021] [Indexed: 12/22/2022] Open
Abstract
Nitrate reductases (NRs) are molybdoenzymes that reduce nitrate (NO3−) to nitrite (NO2−) in both mammals and plants. In mammals, the salival microbes take part in the generation of the NO2− from NO3−, which further produces nitric oxide (NO) either in acid-induced NO2− reduction or in the presence of nitrite reductases (NiRs). Here, we report a new approach of VCl3 (V3+ ion source) induced step-wise reduction of NO3− in a CoII-nitrato complex, [(12-TMC)CoII(NO3−)]+ (2,{CoII–NO3−}), to a CoIII–nitrosyl complex, [(12-TMC)CoIII(NO)]2+ (4,{CoNO}8), bearing an N-tetramethylated cyclam (TMC) ligand. The VCl3 inspired reduction of NO3− to NO is believed to occur in two consecutive oxygen atom transfer (OAT) reactions, i.e., OAT-1 = NO3− → NO2− (r1) and OAT-2 = NO2− → NO (r2). In these OAT reactions, VCl3 functions as an O-atom abstracting species, and the reaction of 2 with VCl3 produces a CoIII-nitrosyl ({CoNO}8) with VV-Oxo ({VV
Created by potrace 1.16, written by Peter Selinger 2001-2019
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O}3+) species, via a proposed CoII-nitrito (3, {CoII–NO2−}) intermediate species. Further, in a separate experiment, we explored the reaction of isolated complex 3 with VCl3, which showed the generation of 4 with VV-Oxo, validating our proposed reaction sequences of OAT reactions. We ensured and characterized 3 using VCl3 as a limiting reagent, as the second-order rate constant of OAT-2 (k2/) is found to be ∼1420 times faster than that of the OAT-1 (k2) reaction. Binding constant (Kb) calculations also support our proposition of NO3− to NO transformation in two successive OAT reactions, as Kb(CoII–NO2−) is higher than Kb(CoII–NO3−), hence the reaction moves in the forward direction (OAT-1). However, Kb(CoII–NO2−) is comparable to Kb{CoNO}8, and therefore sequenced the second OAT reaction (OAT-2). Mechanistic investigations of these reactions using 15N-labeled-15NO3− and 15NO2− revealed that the N-atom in the {CoNO}8 is derived from NO3− ligand. This work highlights the first-ever report of VCl3 induced step-wise NO3− reduction (NRs activity) followed by the OAT induced NO2− reduction and then the generation of Co-nitrosyl species {CoNO}8. Single metal-induced reduction of NO3− → {NO2−} → NO via oxygen atom transfer reaction.![]()
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Affiliation(s)
- Kulbir
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Sandip Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Tarali Devi
- Humboldt-Universität zu Berlin, Institut für Chemie Brook-Taylor-Straße 2 D-12489 Berlin Germany
| | - Mrigaraj Goswami
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Mahesh Yenuganti
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Prabhakar Bhardwaj
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Somnath Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | | | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
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10
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Kurtikyan TS, Hayrapetyan VA, Hovhannisyan AA, Martirosyan GG, Hovhannisyan GS, Iretskii AV, Ford PC. Nitric Oxide Dioxygenation by O 2 Adducts of Manganese Porphyrins. Inorg Chem 2020; 59:17224-17233. [PMID: 33180482 DOI: 10.1021/acs.inorgchem.0c02464] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe here nitric oxide dioxygenation (NOD) by the dioxygen manganese porphyrin adducts Mn(Por)(η2-O2) (Por2- = the meso-tetra-phenyl or meso-tetra-p-tolylporphyrinato dianions, TPP2- and TTP2-). The Mn(Por)(η2-O2) was assembled by adding O2 to sublimed layers of MnII(Por). When NO was introduced and the temperature was slowly raised from 80 to 120 K, new IR bands with correlated intensities grew concomitant with depletion of the υ(O2) band. Isotope labeling experiments with 18O2, 15NO, and N18O combined with DFT calculations provide the basis for identifying the initial intermediates as the six-coordinate peroxynitrito complexes (ON)Mn(Por)(η1-OONO). Further warming to room temperature led to formation of the nitrato complexes Mn(Por)(η1-ONO2), thereby demonstrating the ability of these metal centers to promote NOD. However, comparable quantities of the nitrito complexes Mn(Por)(η1-ONO) are also formed. In contrast, when the analogous reactions were initiated with the weak σ-donor ligand tetrahydrofuran or dimethyl sulfide present in the layers, formation of Mn(Por)(η1-ONO2) is strongly favored (∼90%). The latter are formed via a 6-coordinate intermediate (L)Mn(Por)(η1-ONO2) (L = THF or DMS) that loses L upon warming. These reaction patterns are compared to those observed previously with analogous iron and cobalt porphyrin complexes.
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Affiliation(s)
- Tigran S Kurtikyan
- Molecule Structure Research Centre (MSRC) of the Scientific and Technological Centre of Organic and Pharmaceutical Chemistry NAS, 0014, Yerevan, Armenia
| | - Vardan A Hayrapetyan
- Molecule Structure Research Centre (MSRC) of the Scientific and Technological Centre of Organic and Pharmaceutical Chemistry NAS, 0014, Yerevan, Armenia
| | - Astghik A Hovhannisyan
- Molecule Structure Research Centre (MSRC) of the Scientific and Technological Centre of Organic and Pharmaceutical Chemistry NAS, 0014, Yerevan, Armenia
| | - Garik G Martirosyan
- Molecule Structure Research Centre (MSRC) of the Scientific and Technological Centre of Organic and Pharmaceutical Chemistry NAS, 0014, Yerevan, Armenia
| | - Gohar Sh Hovhannisyan
- Molecule Structure Research Centre (MSRC) of the Scientific and Technological Centre of Organic and Pharmaceutical Chemistry NAS, 0014, Yerevan, Armenia
| | - Alexei V Iretskii
- Department of Chemistry, Lake Superior State University, Sault Sainte Marie, Michigan 49783, United States
| | - Peter C Ford
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106-9510, United States
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11
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Lu S, Chiou TW, Li WL, Wang CC, Wang YM, Lee WZ, Lu TT, Liaw WF. Dinitrosyliron Complex [(PMDTA)Fe(NO)2]: Intermediate for Nitric Oxide Monooxygenation Activity in Nonheme Iron Complex. Inorg Chem 2020; 59:8308-8319. [DOI: 10.1021/acs.inorgchem.0c00691] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shan Lu
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Tzung-Wen Chiou
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Chemistry, Tunghai University, Taichung 40704, Taiwan
| | - Wei-Liang Li
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chun-Chieh Wang
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Yun-Ming Wang
- Department of Biological Science and Technology, Institute of Molecular Medicine and Bioengineering, Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Way-Zen Lee
- Department of Chemistry, National Taiwan Normal University, Taipei 11677, Taiwan
| | - Tsai-Te Lu
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Wen-Feng Liaw
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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12
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Das S, Kulbir, Ghosh S, Chandra Sahoo S, Kumar P. Nitric oxide monooxygenation (NOM) reaction of cobalt-nitrosyl {Co(NO)} 8 to Co II-nitrito {Co II(NO 2 -)}: base induced hydrogen gas (H 2) evolution. Chem Sci 2020; 11:5037-5042. [PMID: 34122960 PMCID: PMC8159239 DOI: 10.1039/d0sc01572e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 04/24/2020] [Indexed: 12/21/2022] Open
Abstract
Here, we report the nitric oxide monooxygenation (NOM) reactions of a CoIII-nitrosyl complex (1, {Co-NO}8) in the presence of mono-oxygen reactive species, i.e., a base (OH-, tetrabutylammonium hydroxide (TBAOH) or NaOH/15-crown-5), an oxide (O2- or Na2O/15-crown-5) and water (H2O). The reaction of 1 with OH- produces a CoII-nitrito complex {3, (CoII-NO2 -)} and hydrogen gas (H2), via the formation of a putative N-bound Co-nitrous acid intermediate (2, {Co-NOOH}+). The homolytic cleavage of the O-H bond of proposed [Co-NOOH]+ releases H2 via a presumed CoIII-H intermediate. In another reaction, 1 generates CoII-NO2 - when reacted with O2- via an expected CoI-nitro (4) intermediate. However, complex 1 is found to be unreactive towards H2O. Mechanistic investigations using 15N-labeled-15NO and 2H-labeled-NaO2H (NaOD) evidently revealed that the N-atom in CoII-NO2 - and the H-atom in H2 gas are derived from the nitrosyl ligand and OH- moiety, respectively.
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Affiliation(s)
- Sandip Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Kulbir
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | - Somnath Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
| | | | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Tirupati 517507 India
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13
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Yenuganti M, Das S, Kulbir, Ghosh S, Bhardwaj P, Pawar SS, Sahoo SC, Kumar P. Nitric oxide dioxygenation (NOD) reactions of CoIII-peroxo and NiIII-peroxo complexes: NODversusNO activation. Inorg Chem Front 2020. [DOI: 10.1039/d0qi01023e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A comparative study of “nitric oxide dioxygenationversusdioxygen or nitric oxide activation”.
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Affiliation(s)
- Mahesh Yenuganti
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
| | - Sandip Das
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
| | - Kulbir
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
| | - Somnath Ghosh
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
| | - Prabhakar Bhardwaj
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
| | - Sonali Shivaji Pawar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
| | | | - Pankaj Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Tirupati 517507
- India
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14
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Liu JJ, Siegler MA, Karlin KD, Moënne‐Loccoz P. Direct Resonance Raman Characterization of a Peroxynitrito Copper Complex Generated from O
2
and NO and Mechanistic Insights into Metal‐Mediated Peroxynitrite Decomposition. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jeffrey J. Liu
- Department of ChemistryJohns Hopkins University Baltimore MD 21218 USA
| | - Maxime A. Siegler
- Department of ChemistryJohns Hopkins University Baltimore MD 21218 USA
| | - Kenneth D. Karlin
- Department of ChemistryJohns Hopkins University Baltimore MD 21218 USA
| | - Pierre Moënne‐Loccoz
- Department of Biochemistry and Molecular BiologyOregon Health & Science University Portland OR 97239 USA
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15
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Liu JJ, Siegler MA, Karlin KD, Moënne-Loccoz P. Direct Resonance Raman Characterization of a Peroxynitrito Copper Complex Generated from O 2 and NO and Mechanistic Insights into Metal-Mediated Peroxynitrite Decomposition. Angew Chem Int Ed Engl 2019; 58:10936-10940. [PMID: 31158311 DOI: 10.1002/anie.201904672] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/29/2019] [Indexed: 12/26/2022]
Abstract
We report the formation of a new copper peroxynitrite (PN) complex [CuII (TMG3 tren)(κ1 -OONO)]+ (PN1) from the reaction of [CuII (TMG3 tren)(O2 .- )]+ (1) with NO. (g) at -125 °C. The first resonance Raman spectroscopic characterization of such a metal-bound PN moiety supports a cis κ1 -(- OONO) geometry. PN1 transforms thermally into an isomeric form (PN2) with κ2 -O,O'-(- OONO) coordination, which undergoes O-O bond homolysis to generate a putative cupryl (LCuII -O. ) intermediate and NO2 . . These transient species do not recombine to give a nitrato (NO3 - ) product but instead proceed to effect oxidative chemistry and formation of a CuII -nitrito (NO2 - ) complex (2).
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Affiliation(s)
- Jeffrey J Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Maxime A Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Kenneth D Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Pierre Moënne-Loccoz
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, OR, 97239, USA
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16
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Kim KS, Hong Y, Kim HC, Choi SI, Hong JW. Ultrathin-Polyaniline-Coated Pt-Ni Alloy Nanooctahedra for the Electrochemical Methanol Oxidation Reaction. Chemistry 2019; 25:7185-7190. [PMID: 30916839 DOI: 10.1002/chem.201900238] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Indexed: 01/24/2023]
Abstract
Controlling the morphology and composition of nanocatalysts constructed from metals and conductive polymers has attracted attention owing to their great potential for the development of high-efficiency catalysts for various catalytic applications. Herein, a facile synthetic approach for ultrathin-polyaniline-coated Pt-Ni nanooctahedra (Pt-Ni@PANI hybrids) with controllable PANI shell thicknesses is presented. Pt-Ni nanooctahedra/C catalysts enclosed by PANI shells with thicknesses from 0.6 to 2.4 nm were obtained by fine control over the amount of aniline. The various Pt-Ni@PANI hybrids exhibited electrocatalytic activity toward the methanol oxidation reaction that is highly dependent on the thickness of the PANI shell. Pt-Ni@PANI hybrids with the thinnest PANI shells (0.6 nm) showed markedly improved electrocatalytic performance for the methanol oxidation reaction compared with Pt-Ni@PANI hybrids with thicker PANI shells, Pt-Ni nanooctahedra/C, and commercial Pt/C due to synergistic benefits of ultrathin PANI shells and Pt-Ni alloy.
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Affiliation(s)
- Kyung Soo Kim
- Department of Chemistry, University of Ulsan, Ulsan, 44776, Korea
| | - Youngmin Hong
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu, 41566, Korea
| | - Heon Chul Kim
- Department of Chemistry, University of Ulsan, Ulsan, 44776, Korea
| | - Sang-Il Choi
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu, 41566, Korea
| | - Jong Wook Hong
- Department of Chemistry, University of Ulsan, Ulsan, 44776, Korea
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17
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Noh H, Cho J. Synthesis, characterization and reactivity of non-heme 1st row transition metal-superoxo intermediates. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.12.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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18
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Fukuzumi S, Lee YM, Nam W. Structure and reactivity of the first-row d-block metal-superoxo complexes. Dalton Trans 2019; 48:9469-9489. [DOI: 10.1039/c9dt01402k] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review discusses the structure and reactivity of metal-superoxo complexes covering all ten first-row d-block metals from Sc to Zn.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 03760
- Korea
- Graduate School of Science and Technology
| | - Yong-Min Lee
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 03760
- Korea
- Research Institute for Basic Sciences
| | - Wonwoo Nam
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 03760
- Korea
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
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19
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Kumar R, Ansari A, Rajaraman G. Axial vs. Equatorial Ligand Rivalry in Controlling the Reactivity of Iron(IV)-Oxo Species: Single-State vs. Two-State Reactivity. Chemistry 2018; 24:6818-6827. [DOI: 10.1002/chem.201800380] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Ravi Kumar
- Department of Chemistry; Indian Institute of Technology Bombay; Powai, Mumbai 400076 India
| | - Azaj Ansari
- Department of Chemistry; Central University of Haryana; Haryana 123031 India
| | - Gopalan Rajaraman
- Department of Chemistry; Indian Institute of Technology Bombay; Powai, Mumbai 400076 India
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20
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Ahn HM, Bae JM, Kim MJ, Bok KH, Jeong HY, Lee SJ, Kim C. Synthesis, Characterization, and Efficient Catalytic Activities of a Nickel(II) Porphyrin: Remarkable Solvent and Substrate Effects on Participation of Multiple Active Oxidants. Chemistry 2017; 23:11969-11976. [PMID: 28731593 DOI: 10.1002/chem.201702750] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Indexed: 12/13/2022]
Abstract
A new nickel(II) porphyrin complex, [NiII (porp)] (1), has been synthesized and characterized by 1 H NMR, 13 C NMR and mass spectrometry analysis. This NiII porphyrin complex 1 quantitatively catalyzed the epoxidation reaction of a wide range of olefins with meta-chloroperoxybenzoic acid (m-CPBA) under mild conditions. Reactivity and Hammett studies, H218 O-exchange experiments, and the use of PPAA (peroxyphenylacetic acid) as a mechanistic probe suggested that participation of multiple active oxidants NiII -OOC(O)R 2, NiIV -Oxo 3, and NiIII -Oxo 4 within olefin epoxidation reactions by the nickel porphyrin complex is markedly affected by solvent polarity, concentration, and type of substrate. In aprotic solvent systems, such as toluene, CH2 Cl2 , and CH3 CN, multiple oxidants, NiII -(O)R 2, NiIV -Oxo 3, and NiIII -Oxo 4, operate simultaneously as the key active intermediates responsible for epoxidation reactions of easy-to-oxidize substrate cyclohexene, whereas NiIV -Oxo 3 and NiIII -Oxo 4 species become the common reactive oxidant for the difficult-to-oxidize substrate 1-octene. In a protic solvent system, a mixture of CH3 CN and H2 O (95:5), the NiII -OOC(O)R 2 undergoes heterolytic or homolytic O-O bond cleavage to afford NiIV -Oxo 3 and NiIII -Oxo 4 species by general acid catalysis prior to direct interaction between 2 and olefin, regardless of the type of substrate. In this case, only NiIV -Oxo 3 and NiIII -Oxo 4 species were the common reactive oxidant responsible for olefin epoxidation reactions.
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Affiliation(s)
- Hye Mi Ahn
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, 139-743, Korea
| | - Jeong Mi Bae
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, 139-743, Korea
| | - Min Jeong Kim
- Department of Chemistry, Korea University, Seoul, 136-701, Korea
| | - Kwon Hee Bok
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, 139-743, Korea
| | - Ha Young Jeong
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, 139-743, Korea
| | - Suk Joong Lee
- Department of Chemistry, Korea University, Seoul, 136-701, Korea
| | - Cheal Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, 139-743, Korea
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