1
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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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2
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van Langevelde P, Engbers S, Buda F, Hetterscheid DGH. Elucidation of the Electrocatalytic Nitrite Reduction Mechanism by Bio-Inspired Copper Complexes. ACS Catal 2023; 13:10094-10103. [PMID: 37560187 PMCID: PMC10407843 DOI: 10.1021/acscatal.3c01989] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/26/2023] [Indexed: 08/11/2023]
Abstract
Mononuclear copper complexes relevant to the active site of copper nitrite reductases (CuNiRs) are known to be catalytically active for the reduction of nitrite. Yet, their catalytic mechanism has thus far not been resolved. Here, we provide a complete description of the electrocatalytic nitrite reduction mechanism of a bio-inspired CuNiR catalyst Cu(tmpa) (tmpa = tris(2-pyridylmethyl)amine) in aqueous solution. Through a combination of electrochemical studies, reaction kinetics, and density functional theory (DFT) computations, we show that the protonation steps take place in a stepwise manner and are decoupled from electron transfer. The rate-determining step is a general acid-catalyzed protonation of a copper-ligated nitrous acid (HNO2) species. In view of the growing urge to convert nitrogen-containing compounds, this work provides principal reaction parameters for efficient electrochemical nitrite reduction. This contributes to the investigation and development of nitrite reduction catalysts, which is crucial to restore the biogeochemical nitrogen cycle.
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Affiliation(s)
| | - Silène Engbers
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | - Francesco Buda
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
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3
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Mondal A, Reddy KP, Som S, Chopra D, Kundu S. Nitrate and Nitrite Reductions at Copper(II) Sites: Role of Noncovalent Interactions from Second-Coordination-Sphere. Inorg Chem 2022; 61:20337-20345. [DOI: 10.1021/acs.inorgchem.2c02775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Aditesh Mondal
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISERTVM), Thiruvananthapuram 695551, India
| | - Kiran P. Reddy
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISERTVM), Thiruvananthapuram 695551, India
| | - Shubham Som
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISERB), Bhopal Bypass Road, Bhauri, Bhopal 462066, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISERB), Bhopal Bypass Road, Bhauri, Bhopal 462066, India
| | - Subrata Kundu
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISERTVM), Thiruvananthapuram 695551, India
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4
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Gupta S, Arora S, Mondal A, Stieber SCE, Gupta P, Kundu S. A Copper(II)‐Nitrite Complex Hydrogen‐Bonded to a Protonated Amine in the Second‐Coordination‐Sphere. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200105] [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)
- Shourya Gupta
- IISER-TVM: Indian Institute of Science Education Research Thiruvananthapuram Chemistry INDIA
| | - Sumangla Arora
- IIT Roorkee: Indian Institute of Technology Roorkee Chemistry INDIA
| | - Aditesh Mondal
- IISER-TVM: Indian Institute of Science Education Research Thiruvananthapuram Chemistry INDIA
| | | | - Puneet Gupta
- IIT Roorkee: Indian Institute of Technology Roorkee Chemistry INDIA
| | - Subrata Kundu
- Indian Institute of Science Education and Research Thiruvananthapuram Chemistry Maruthamala POVithura 695551 Thiruvananthapuram INDIA
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5
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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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6
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Will J, Würtele C, Becker J, Walter O, Schindler S. Synthesis, crystal structures and reactivity towards dioxygen of copper(I) complexes with tripodal aliphatic amine ligands. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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7
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Maiti D, Islam ASM, Dutta A, Sasmal M, Prodhan C, Ali M. Dansyl-appended CuII-complex-based nitroxyl (HNO) sensing with living cell imaging application and DFT studies. Dalton Trans 2019; 48:2760-2771. [DOI: 10.1039/c8dt04564j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We introduce herein, a novel copper complex-based fluorescent probe[CuII(DQ468)Cl]+that exhibits a significant fluorescence turn-on response towards nitroxyl with high selectivity over other biological reactive oxygen, nitrogen and sulfur species, including nitric oxide.
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Affiliation(s)
- Debjani Maiti
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | | | - Ananya Dutta
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Mihir Sasmal
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Chandraday Prodhan
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Mahammad Ali
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
- Vice-Chancellor
- Aliah University
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8
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Deka H, Ghosh S, Gogoi K, Saha S, Mondal B. Nitric Oxide Reactivity of a Cu(II) Complex of an Imidazole-Based Ligand: Aromatic C-Nitrosation Followed by the Formation of N-Nitrosohydroxylaminato Complex. Inorg Chem 2017; 56:5034-5040. [PMID: 28387516 DOI: 10.1021/acs.inorgchem.7b00069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A binuclear Cu(II) complex, 1, [Cu2(L-)2(OAc)](OAc) of imidazole-based ligand LH {LH = 2-(bis(2-ethyl-5-methyl-1H-imidazol-4-yl)methyl)phenol} was synthesized and characterized spectroscopically and structurally. Addition of an equivalent amount of nitric oxide (NO) by a gastight syringe to the acetonitrile:methanol (5:1, v/v) solution of complex 1 at room temperature resulted in the reduction of Cu(II) center to Cu(I) with concomitant C-nitrosation of the ligand. Spectroscopic characterization of the resulting Cu(I) complex (1a) of the C-nitrosylated ligand, L' {L' = 2-(bis(2-ethyl-5-methyl-1H-imidazol-4-yl)methyl)-4-nitroso-phenol} has been done. The Cu(I) complex, 1a, further reacted with NO to result in the corresponding N-nitrosohydroxylaminato complex, 2, [Cu2(L-ONNO)2](OAc)2 through the formation of a Cu(I)-nitrosyl intermediate. A small fraction of the nitrosyl intermediate decomposed to the corresponding Cu(II) complex 3, [Cu(L')2], and N2O in a parallel reaction.
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Affiliation(s)
- Hemanta Deka
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Somnath Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Kuldeep Gogoi
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Soumen Saha
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
| | - Biplab Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati , North Guwahati, Assam 781039, India
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9
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10
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Massoud SS, Louka FR, Gazzaz MA, Henary MM, Fischer RC, Mautner FA. Polynuclear copper(II) complexes bridged by polycarboxylates of aromatic and N-heterocyclic compounds. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Deka H, Ghosh S, Saha S, Gogoi K, Mondal B. Effect of ligand denticity on the nitric oxide reactivity of cobalt(ii) complexes. Dalton Trans 2016; 45:10979-88. [DOI: 10.1039/c6dt01169a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NO reactivity of three Co(ii) complexes, 1, 2 and 3 have been studied in degassed methanol solution. The complexes differ from each other in terms of denticity and flexibility of the ligand fameworks. Complex 1 undergoes reductive nitrosylation of the metal ion; 2 results in corresponding [CoIII(NO−)] complex; whereas 3 does not react with NO.
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Affiliation(s)
- Hemanta Deka
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Somnath Ghosh
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Soumen Saha
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Kuldeep Gogoi
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Biplab Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
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12
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Moore CM, Szymczak NK. Nitrite reduction by copper through ligand-mediated proton and electron transfer. Chem Sci 2015; 6:3373-3377. [PMID: 28706701 PMCID: PMC5490426 DOI: 10.1039/c5sc00720h] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 04/02/2015] [Indexed: 11/25/2022] Open
Abstract
Nitrite reduction by a copper complex featuring a proton-responsive tripodal ligand is demonstrated. Gaseous nitric oxide was confirmed as the sole NO X by-product in quantitative yield. DFT calculations predict that nitrite reduction occurs via a proton and electron transfer process mediated by the ligand. The reported mechanism parallels nitrite reduction by copper nitrite reductase.
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Affiliation(s)
- Cameron M Moore
- Department of Chemistry , University of Michigan , 930 N. University Ave. , Ann Arbor , MI 48109 , USA .
| | - Nathaniel K Szymczak
- Department of Chemistry , University of Michigan , 930 N. University Ave. , Ann Arbor , MI 48109 , USA .
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13
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Kalita A, Kumar V, Mondal B. Nitric oxide reactivity of copper(II) complexes of bidentate amine ligands. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Nitric oxide reactivity of a manganese(II) complex leading to nitrosation of the ligand. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Abstract
Copper(II) complex of 4-amino-3-hydroxy-1-sulphonic acid was synthesized and characterized. Upon addition of nitric oxide, the copper(II) center of the complex in methanol was found to undergo reduction through an unstable copper(II)-nitrosyl intermediate. The formation of the intermediate was confirmed by UV-visible and FT-IR spectroscopy. The reduction of the copper(II) center was accompanied with a simultaneous C-nitrosation of the aromatic ring of the ligand. The C-nitrosation product was isolated and characterized by various spectroscopic analyses.
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Affiliation(s)
- Kanhu Charan Rout
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India.
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16
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Kumar V, Kalita A, Mondal B. Phenol ring nitration induced by the unprecedented reduction of the Cu(II) centre by nitrogen dioxide. Dalton Trans 2014; 42:16264-7. [PMID: 24100925 DOI: 10.1039/c3dt51642c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Nitrogen dioxide (˙NO2) induces tyrosine nitration through a radical mechanism in biological systems. Two copper(II) complexes, 1 and 2, with ligands L₁ and L₂ [L₁ = 2,4-di-tert-butyl-6-(((2-(dimethylamino)ethyl)(isopropyl)amino)methyl)phenol; L₂ = 6,6'-(((2-(dimethylamino)ethyl)azanediyl)bis(methylene))bis(2,4-di-tert-butylphenol)], respectively, have been made to react with ˙NO2. In both cases, the reduction of the copper(II) center was observed in the presence of ˙NO2 which induces phenol ring nitration through nitronium ion (NO2(+)) formation.
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17
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Yuan Z, Yang X, Wang L, Huang J, Wei G. Efficient synthesis of new asymmetric tripodal ligands using microwave irradiation, and their crystal structures. RSC Adv 2014. [DOI: 10.1039/c4ra07346k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient method for synthesis of asymmetric tripodal ligands was described by using microwave irradiation.
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Affiliation(s)
- Zeli Yuan
- College of Chemistry
- Fuzhou University
- Fuzhou 350108, P. R. China
- School of Pharmacy
- Zunyi Medical University
| | - Xiaoqing Yang
- College of Chemistry
- Fuzhou University
- Fuzhou 350108, P. R. China
| | - Lei Wang
- College of Chemistry
- Fuzhou University
- Fuzhou 350108, P. R. China
| | - Jiandong Huang
- College of Chemistry
- Fuzhou University
- Fuzhou 350108, P. R. China
| | - Gang Wei
- CSIRO Materials Science and Engineering
- Lindfield, Australia
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18
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Alam R, Mistri T, Mondal P, Das D, Mandal SK, Khuda-Bukhsh AR, Ali M. A novel copper(II) complex as a nitric oxide turn-on fluorosensor: intracellular applications and DFT calculation. Dalton Trans 2013; 43:2566-76. [PMID: 24316755 DOI: 10.1039/c3dt52521j] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report, herein, the development of an easily synthesizable novel dansyl-based turn-on NO sensor L2. The UV-Vis titration data of L2 with Cu(2+) display a gradual increase in absorbance at 418 nm with [Cu(2+)], which were analyzed by using a non-linear least-squares computer-fit program yielding K = (1.16 ± 0.36) × 10(6) M(-1) and n = (1.28 ± 0.03) indicating a 1 : 1 complexation. The ground state geometries of L2 as well as its complex [Cu(L2)Cl](+) (1) were optimized by DFT calculations which showed that in complex 1 the central metal ion is in distorted tetrahedral geometry with bond distances very close to those found in analogous Cu(2+) complexes. The fluorescence of L2 was dramatically quenched (∼60-fold) through complexation with paramagnetic Cu(2+) to form [Cu(L2)Cl](+) in MeCN-H2O (9 : 1, v/v) at pH 7.2 in HEPES buffer, which on further treatment with Angeli's salt (Na2N2O3) restores its fluorescence property by ∼15-fold due to the reduction of Cu(2+) to Cu(+) by NO generated in solution from Na2N2O3. The lifetime measurements displayed a substantial decrease in the lifetime of free ligand L2 (τ0 = 12 ns) on complexation with Cu(2+) (τ0 = 2.1 ns). The detection limit of NO calculated by the 3σ method gives a value of 1.6 nM. The NO induced fluorescence enhancement of [Cu(II)(L2)Cl](+) was due to the reduction of [Cu(II)(L2)Cl](+) (1) to [Cu(I)(L2)](+) (2) and is supported by the disappearance of the d-d transition band at 850 nm as well as the X-band EPR signal of 1. The selective "turn on" fluorogenic behavior of L2 was examined on HeLa cells of human cervical cancer origin by fluorescence microscopy which showed very intense intracellular fluorescence that was strongly suppressed by the addition of Cu(2+) but it regains its fluorescence property on further incubation with Angeli's salt (Na2N2O3). The existence of [Cu(II)(L2)Cl](+) and [Cu(I)(L2)](+) in solution was confirmed by ESI-MS(+) (m/z) analysis. The effect of different biologically relevant cations and anions on the fluorescence property of L2 indicates that it was only the [Cu(II)(L2)Cl](+) which displayed high selectivity for NO, indicating its suitability for intracellular application without much worry about its cytotoxicity in a specified dose.
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Affiliation(s)
- Rabiul Alam
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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19
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Zhang S, Çelebi-Ölçüm N, Melzer MM, Houk KN, Warren TH. Copper(I) nitrosyls from reaction of copper(II) thiolates with S-nitrosothiols: mechanism of NO release from RSNOs at Cu. J Am Chem Soc 2013; 135:16746-9. [PMID: 24111922 DOI: 10.1021/ja406476y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
S-nitrosothiols (RSNOs) serve as ready sources of biological nitric oxide activity, especially in conjunction with copper centers. We report a novel pathway for the generation of NO within the coordination sphere of copper model complexes from reaction of copper(II) thiolates with S-nitrosothiols. Reaction of tris(pyrazolyl)borate copper(II) thiolates (iPr2)TpCu-SR (R = C6F5 or CPh3) with (t)BuSNO leads to formation of (iPr2)TpCu(NO) and the unsymmetrical disulfide RS-S(t)Bu. Quantum mechanical investigations with B3LYP-D3/6-311G(d) suggest formation of a κ(1)-N-RSNO adduct (iPr2)TpCu(SR)(R'SNO) that precedes release of RSSR' to deliver (iPr2)TpCu(NO). This process is reversible; reaction of (iPr2)TpCu(NO) (but not (iPr2)TpCu(NCMe)) with C6F5S-SC6F5 forms (iPr2)TpCu-SC6F5. Coupled with the facile, reversible reaction between (iPr2)TpCu(NO) and C6F5SNO to give (iPr2)TpCu-SC6F5 and 2 equiv NO, we outline a new, detailed catalytic cycle for NO generation from RSNOs at Cu.
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Affiliation(s)
- Shiyu Zhang
- Department of Chemistry, Georgetown University , Box 571227-1227, Washington, DC 20057, United States
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20
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Maji RC, Barman SK, Roy S, Chatterjee SK, Bowles FL, Olmstead MM, Patra AK. Copper Complexes Relevant to the Catalytic Cycle of Copper Nitrite Reductase: Electrochemical Detection of NO(g) Evolution and Flipping of NO2 Binding Mode upon CuII → CuI Reduction. Inorg Chem 2013; 52:11084-95. [DOI: 10.1021/ic401295t] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ram Chandra Maji
- Department of Chemistry, National Institute of Technology−Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
| | - Suman Kumar Barman
- Department
of Chemistry, Indian Institute of Technology−Kanpur, Kanpur 208 016, India
| | - Suprakash Roy
- Department of Chemistry, National Institute of Technology−Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
| | - Sudip K. Chatterjee
- Department of Chemistry, National Institute of Technology−Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
| | - Faye L. Bowles
- Department of Chemistry, University of California-Davis, Davis, California 95616, United States
| | - Marilyn M. Olmstead
- Department of Chemistry, University of California-Davis, Davis, California 95616, United States
| | - Apurba K. Patra
- Department of Chemistry, National Institute of Technology−Durgapur, Mahatma Gandhi Avenue, Durgapur 713 209, India
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21
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Kalita A, Deka RC, Mondal B. Reaction of a Copper(II)–Nitrosyl Complex with Hydrogen Peroxide: Phenol Ring Nitration through a Putative Peroxynitrite Intermediate. Inorg Chem 2013; 52:10897-903. [DOI: 10.1021/ic400890f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Apurba Kalita
- Department
of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Ramesh C. Deka
- Department
of Chemical Sciences, Tezpur University, Napaam, Tezpur, Assam 784028, India
| | - Biplab Mondal
- Department
of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
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22
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Kumar P, Kalita A, Mondal B. Nitric oxide sensors based on copper(II) complexes of N-donor ligands. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Synthetic Models of Copper–Nitrosyl Species Proposed as Intermediates in Biological Denitrification. STRUCTURE AND BONDING 2013. [DOI: 10.1007/430_2013_93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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24
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Apfel UP, Buccella D, Wilson JJ, Lippard SJ. Detection of Nitric Oxide and Nitroxyl with Benzoresorufin-Based Fluorescent Sensors. Inorg Chem 2013; 52:3285-94. [DOI: 10.1021/ic302793w] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ulf-Peter Apfel
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Daniela Buccella
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemistry, New York University, New York, New York
10003, United States
| | - Justin J. Wilson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Stephen J. Lippard
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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25
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Kumar P, Kalita A, Mondal B. Nitric oxide reactivity of Cu(ii) complexes of tetra- and pentadentate ligands: structural influence in deciding the reduction pathway. Dalton Trans 2013; 42:5731-9. [DOI: 10.1039/c3dt32580f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Mechanisms of Nitric Oxide Reactions Mediated by Biologically Relevant Metal Centers. NITROSYL COMPLEXES IN INORGANIC CHEMISTRY, BIOCHEMISTRY AND MEDICINE II 2013. [DOI: 10.1007/430_2013_117] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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28
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Melzer MM, Mossin S, Cardenas AJP, Williams KD, Zhang S, Meyer K, Warren TH. A Copper(II) Thiolate from Reductive Cleavage of an S-Nitrosothiol. Inorg Chem 2012; 51:8658-60. [DOI: 10.1021/ic301356h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marie M. Melzer
- Department of Chemistry, Georgetown University, Box 571227-1227,
Washington, D.C. 20057, United States
| | - Susanne Mossin
- Department of Chemistry
and Pharmacy, Friedrich-Alexander-University, Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen,
Germany
| | - Allan Jay P. Cardenas
- Department of Chemistry, Georgetown University, Box 571227-1227,
Washington, D.C. 20057, United States
| | - Kamille D. Williams
- Department of Chemistry, Georgetown University, Box 571227-1227,
Washington, D.C. 20057, United States
| | - Shiyu Zhang
- Department of Chemistry, Georgetown University, Box 571227-1227,
Washington, D.C. 20057, United States
| | - Karsten Meyer
- Department of Chemistry
and Pharmacy, Friedrich-Alexander-University, Erlangen-Nuremberg, Egerlandstrasse 1, 91058 Erlangen,
Germany
| | - Timothy H. Warren
- Department of Chemistry, Georgetown University, Box 571227-1227,
Washington, D.C. 20057, United States
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29
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Kalita A, Kumar P, Mondal B. Reaction of a copper(II)-nitrosyl complex with hydrogen peroxide: putative formation of a copper(I)-peroxynitrite intermediate. Chem Commun (Camb) 2012; 48:4636-8. [PMID: 22466785 DOI: 10.1039/c2cc31117h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction of a Cu(II)-nitrosyl complex (1) with hydrogen peroxide at -20 °C in acetonitrile results in the formation of the corresponding Cu(I)-peroxynitrite intermediate. The reduction of the Cu(II) center was monitored by UV-visible spectroscopic studies. Formation of the peroxynitrite intermediate has been confirmed by its characteristic phenol ring nitration reaction as well as isolation of corresponding Cu(I)-nitrate (2). On air oxidation, 2 resulted in the corresponding Cu(II)-nitrate (3). Thus, these results demonstrate a possible decomposition pathway for H(2)O(2) and NO through the formation of a peroxynitrite intermediate in biological systems.
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Affiliation(s)
- Apurba Kalita
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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30
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Sarma M, Mondal B. Nitric oxide reactivity of copper(II) complexes of bidentate amine ligands: effect of substitution on ligand nitrosation. Dalton Trans 2012; 41:2927-34. [PMID: 22266544 DOI: 10.1039/c2dt11082b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three copper(ii) complexes with bidentate ligands L(1), L(2) and L(3) [L(1), N,N(/)-dimethylethylenediamine; L(2), N,N(/)-diethylethylenediamine and L(3), N,N(/)-diisobutylethylenediamine], respectively, were synthesized as their perchlorate salts. The single crystal structures for all the complexes were determined. The nitric oxide reactivity of the complexes was studied in acetonitrile solvent. The formation of thermally unstable [Cu(II)-NO] intermediate on reaction of the complexes with nitric oxide in acetonitrile solution was observed prior to the reduction of copper(II) centres to copper(I). The reduction was found to result with a simultaneous mono- and di-nitrosation at the secondary amine sites of the ligand. All the nitrosation products were isolated and characterized. The ratio of the yield of mono- and di-nitrosation product was found to be dependent on the N-substitution present in the ligand framework.
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Affiliation(s)
- Moushumi Sarma
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, India
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31
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Sarma M, Kumar V, Kalita A, Deka RC, Mondal B. Nitric oxide reactivity of copper(ii) complexes of bidentate amine ligands: effect of chelate ring size on the stability of a [CuII–NO] intermediate. Dalton Trans 2012; 41:9543-52. [DOI: 10.1039/c2dt30721a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Agarwal C, Prasad E. Detection of Cu(ii) and NO by ‘on–off’ aggregation in poly(aryl ether) dendron derivatives. NEW J CHEM 2012. [DOI: 10.1039/c2nj40272f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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33
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Merkle AC, Lehnert N. Binding and activation of nitrite and nitric oxide by copper nitrite reductase and corresponding model complexes. Dalton Trans 2012; 41:3355-68. [DOI: 10.1039/c1dt11049g] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Kumar P, Kalita A, Mondal B. Copper(ii) complexes as turn on fluorescent sensors for nitric oxide. Dalton Trans 2012; 41:10543-8. [DOI: 10.1039/c2dt31068f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Kalita A, Kumar P, Deka RC, Mondal B. Role of Ligand to Control the Mechanism of Nitric Oxide Reduction of Copper(II) Complexes and Ligand Nitrosation. Inorg Chem 2011; 50:11868-76. [DOI: 10.1021/ic201582w] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Apurba Kalita
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati,
Assam 781039, India
| | - Pankaj Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati,
Assam 781039, India
| | - Ramesh C. Deka
- Department
of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, Assam, India
| | - Biplab Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati,
Assam 781039, India
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36
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Sarma M, Mondal B. Nitric Oxide Reduction of Copper(II) Complexes: Spectroscopic Evidence of Copper(II)−Nitrosyl Intermediate. Inorg Chem 2011; 50:3206-12. [DOI: 10.1021/ic1011988] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Moushumi Sarma
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Biplab Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
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37
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Stasicka Z. Transition metal complexes as solar photocatalysts in the environment. ADVANCES IN INORGANIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385904-4.00004-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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38
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Mondal B, Kumar P, Ghosh P, Kalita A. Fluorescence-based detection of nitric oxide in aqueous and methanol media using a copper(ii) complex. Chem Commun (Camb) 2011; 47:2964-6. [DOI: 10.1039/c0cc04054a] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Kumar P, Kalita A, Mondal B. Reduction of copper(ii) complexes of tridentate ligands by nitric oxide and fluorescent detection of NO in methanol and water media. Dalton Trans 2011; 40:8656-63. [DOI: 10.1039/c1dt10773a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Basu A, Das G. Oxidative cyclization of thiosemicarbazone: an optical and turn-on fluorescent chemodosimeter for Cu(ii). Dalton Trans 2011; 40:2837-43. [DOI: 10.1039/c0dt01549k] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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41
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Lin YW, Yeung N, Gao YG, Miner KD, Lei L, Robinson H, Lu Y. Introducing a 2-His-1-Glu nonheme iron center into myoglobin confers nitric oxide reductase activity. J Am Chem Soc 2010; 132:9970-2. [PMID: 20586490 DOI: 10.1021/ja103516n] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A conserved 2-His-1-Glu metal center, as found in natural nonheme iron-containing enzymes, was engineered into sperm whale myoglobin by replacing Leu29 and Phe43 with Glu and His, respectively (swMb L29E, F43H, H64, called Fe(B)Mb(-His)). A high resolution (1.65 A) crystal structure of Cu(II)-CN(-)-Fe(B)Mb(-His) was determined, demonstrating that the unique 2-His-1-Glu metal center was successfully created within swMb. The Fe(B)Mb(-His) can bind Cu, Fe, or Zn ions, with both Cu(I)-Fe(B)Mb(-His) and Fe(II)-Fe(B)Mb(-His) exhibiting nitric oxide reductase (NOR) activities. Cu dependent NOR activity was significantly higher than that of Fe in the same metal binding site. EPR studies showed that the reduction of NO to N(2)O catalyzed by these two enzymes resulted in different intermediates; a five-coordinate heme-NO species was observed for Cu(I)-Fe(B)Mb(-His) due to the cleavage of the proximal heme Fe-His bond, while Fe(II)-Fe(B)Mb(-His) remained six-coordinate. Therefore, both the metal ligand, Glu29, and the metal itself, Cu or Fe, play crucial roles in NOR activity. This study presents a novel protein model of NOR and provides insights into a newly discovered member of the NOR family, gNOR.
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Affiliation(s)
- Ying-Wu Lin
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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42
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Wright AM, Wu G, Hayton TW. Structural Characterization of a Copper Nitrosyl Complex with a {CuNO}10 Configuration. J Am Chem Soc 2010; 132:14336-7. [DOI: 10.1021/ja105930b] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ashley M. Wright
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106
| | - Trevor W. Hayton
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106
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