1
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Baeza Cinco MÁ, Chakraborty A, Guzman CF, Kräh S, Wu G, Hayton TW. NO and N 2O Release from the Trityl Diazeniumdiolate Complexes [M(O 2N 2CPh 3) 3] - (M = Fe, Co). Inorg Chem 2023; 62:4847-4852. [PMID: 36913615 DOI: 10.1021/acs.inorgchem.2c04088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Reaction of MBr2 with 3 equiv of [K(18-crown-6)][O2N2CPh3] generates the trityl diazeniumdiolate complexes [K(18-crown-6)][M(O2N2CPh3)3] (M = Co, 2; Fe, 3) in good yields. Irradiation of 2 and 3 using 371 nm light led to NO formation in 10 and 1% yields (calculated assuming a maximum of 6 equiv of NO produced per complex), respectively. N2O was also formed during the photolysis of 2, in 63% yield, whereas photolysis of 3 led to the formation of N2O, as well as Ph3CN(H)OCPh3, in 37 and 5% yields, respectively. These products are indicative of diazeniumdiolate fragmentation via both C-N and N-N bond cleavage pathways. In contrast, oxidation of complexes 2 and 3 with 1.2 equiv of [Ag(MeCN)4][PF6] led to N2O formation but no NO formation, suggesting that diazeniumdiolate fragmentation occurs exclusively via C-N bond cleavage under these conditions. While the photolytic yields of NO are modest, they represent a 10- to 100-fold increase compared to the previously reported Zn congener, suggesting that the presence of a redox-active metal center favors NO formation upon trityl diazeniumdiolate fragmentation.
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Affiliation(s)
- Miguel Á Baeza Cinco
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Arunavo Chakraborty
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Camilo F Guzman
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Sabrina Kräh
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Guang Wu
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | - Trevor W Hayton
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, California 93106, United States
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2
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White CJ, Lengel MO, Bracken AJ, Kampf JW, Speelman AL, Alp EE, Hu MY, Zhao J, Lehnert N. Distortion of the [FeNO] 2 Core in Flavodiiron Nitric Oxide Reductase Models Inhibits N-N Bond Formation and Promotes Formation of Unusual Dinitrosyl Iron Complexes: Implications for Catalysis and Reactivity. J Am Chem Soc 2022; 144:3804-3820. [PMID: 35212523 DOI: 10.1021/jacs.1c10388] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Flavodiiron nitric oxide reductases (FNORs) carry out the reduction of nitric oxide (NO) to nitrous oxide (N2O), allowing infectious pathogens to mitigate toxic levels of NO generated in the human immune response. We previously reported the model complex [Fe2(BPMP)(OPr)(NO)2](OTf)2 (1, OPr- = propionate) that contains two coplanar NO ligands and that is capable of quantitative NO reduction to N2O [White et al. J. Am. Chem. Soc. 2018, 140, 2562-2574]. Here we investigate, for the first time, how a distortion of the active site affects the ability of the diiron core to mediate N2O formation. For this purpose, we prepared several analogues of 1 that contain two monodentate ligands in place of the bridging carboxylate, [Fe2(BPMP)(X)2(NO)2]3+/1+ (2-X; X = triflate, 1-methylimidazole, or methanol). Structural data of 2-X show that without the bridging carboxylate, the diiron core expands, leading to elongated (O)N-N(O) distances (from 2.80 Å in 1 to 3.00-3.96 Å in 2-X) and distorted (O)N-Fe-Fe-N(O) dihedral angles (from coplanarity (5.9°) in 1 to 52.9-85.1° in 2-X). Whereas 1 produces quantitative amounts of N2O upon one-electron reduction, N2O production is substantially impeded in 2-X, to an initial 5-10% N2O yield. The main products after reduction are unprecedented hs-FeII/{Fe(NO)2}9/10 dinitrosyl iron complexes (DNICs). Even though mononuclear DNICs are stable and do not show N-N coupling (since it is a spin-forbidden process), the hs-FeII/{Fe(NO)2}9/10 DNICs obtained from 2-X show unexpected reactivity and produce up to quantitative N2O yields after 2 h. The implications of these results for the active site structure of FNORs are discussed.
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Affiliation(s)
- Corey J White
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Michael O Lengel
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Abigail J Bracken
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Jeff W Kampf
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Amy L Speelman
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - E Ercan Alp
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Michael Y Hu
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Jiyong Zhao
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Nicolai Lehnert
- Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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3
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Lehnert N, Kim E, Dong HT, Harland JB, Hunt AP, Manickas EC, Oakley KM, Pham J, Reed GC, Alfaro VS. The Biologically Relevant Coordination Chemistry of Iron and Nitric Oxide: Electronic Structure and Reactivity. Chem Rev 2021; 121:14682-14905. [PMID: 34902255 DOI: 10.1021/acs.chemrev.1c00253] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Nitric oxide (NO) is an important signaling molecule that is involved in a wide range of physiological and pathological events in biology. Metal coordination chemistry, especially with iron, is at the heart of many biological transformations involving NO. A series of heme proteins, nitric oxide synthases (NOS), soluble guanylate cyclase (sGC), and nitrophorins, are responsible for the biosynthesis, sensing, and transport of NO. Alternatively, NO can be generated from nitrite by heme- and copper-containing nitrite reductases (NIRs). The NO-bearing small molecules such as nitrosothiols and dinitrosyl iron complexes (DNICs) can serve as an alternative vehicle for NO storage and transport. Once NO is formed, the rich reaction chemistry of NO leads to a wide variety of biological activities including reduction of NO by heme or non-heme iron-containing NO reductases and protein post-translational modifications by DNICs. Much of our understanding of the reactivity of metal sites in biology with NO and the mechanisms of these transformations has come from the elucidation of the geometric and electronic structures and chemical reactivity of synthetic model systems, in synergy with biochemical and biophysical studies on the relevant proteins themselves. This review focuses on recent advancements from studies on proteins and model complexes that not only have improved our understanding of the biological roles of NO but also have provided foundations for biomedical research and for bio-inspired catalyst design in energy science.
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Affiliation(s)
- Nicolai Lehnert
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Eunsuk Kim
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Hai T Dong
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Jill B Harland
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Andrew P Hunt
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Elizabeth C Manickas
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Kady M Oakley
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - John Pham
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Garrett C Reed
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Victor Sosa Alfaro
- Department of Chemistry and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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4
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Sanina NA, Isaeva YA, Utenyshev AN, Dorovatovskii PV, Ovanesyan NS, Emel'yanova NS, Pokidova OV, Tat'yanenko LV, Sulimenkov IV, Kotel'nikov AI, Aldoshin SM. Synthesis, structure, and PDE inhibiting activity of the anionic DNIC with 5-(3-pyridyl)-4H-1,2,4-triazole-3-thiolyl, the nitric oxide donor. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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5
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Structures and Properties of Dinitrosyl Iron and Cobalt Complexes Ligated by Bis(3,5-diisopropyl-1-pyrazolyl)methane. INORGANICS 2019. [DOI: 10.3390/inorganics7100116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two dinitrosyl iron and cobalt complexes [Fe(NO)2(L1”)](BF4) and [Co(NO)2(L1”)](BF4) are synthesized and characterized, supported by a less hindered bidentate nitrogen ligand bis(3,5-diisopropyl-1-pyrazolyl)methane (denoted as L1”), are surprisingly stable under argon atmosphere. X-ray structural analysis shows a distorted tetrahedral geometry. Spectroscopic and structural parameters of the dinitrosyl iron and cobalt complexes are consistent with the previous reported {Fe(NO)2}9 and {Co(NO)2}10. Two N–O and M–N(O) stretching frequencies and their magnetic properties are also consistent with the above electronic structural assignments. We explored the dioxygen reactivities of the obtained dinitrosyl complexes. Moreover, the related [FeCl2(L1”)], [Co(NO3)2(L1”)], and [Co(NO2)2(L1”)] complexes are also characterized in detail.
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6
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Cho SL, Liao CJ, Lu TT. Synthetic methodology for preparation of dinitrosyl iron complexes. J Biol Inorg Chem 2019; 24:495-515. [DOI: 10.1007/s00775-019-01668-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 05/15/2019] [Indexed: 12/29/2022]
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7
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Shmatko NY, Korchagin DV, Shilov GV, Ovanesyan NS, Kulikov AV, Sanina NA, Aldoshin SM. The cationic dinitrosyl iron complexes family with thiocarbamide derivatives: Synthesis, structure and properties in the solid state. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.08.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Speelman AL, Zhang B, Silakov A, Skodje KM, Alp EE, Zhao J, Hu MY, Kim E, Krebs C, Lehnert N. Unusual Synthetic Pathway for an {Fe(NO)2}9 Dinitrosyl Iron Complex (DNIC) and Insight into DNIC Electronic Structure via Nuclear Resonance Vibrational Spectroscopy. Inorg Chem 2016; 55:5485-501. [DOI: 10.1021/acs.inorgchem.6b00510] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amy L. Speelman
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Bo Zhang
- Department of Chemistry and Department of Biochemistry and Molecular
Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Alexey Silakov
- Department of Chemistry and Department of Biochemistry and Molecular
Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kelsey M. Skodje
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - E. Ercan Alp
- Advanced
Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Jiyong Zhao
- Advanced
Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Michael Y. Hu
- Advanced
Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Eunsuk Kim
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Carsten Krebs
- Department of Chemistry and Department of Biochemistry and Molecular
Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Nicolai Lehnert
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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9
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Wittkamp F, Nagel C, Lauterjung P, Mallick B, Schatzschneider U, Apfel UP. Phosphine-ligated dinitrosyl iron complexes for redox-controlled NO release. Dalton Trans 2016; 45:10271-9. [DOI: 10.1039/c6dt01209d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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10
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Luo L, Chen S, Luo Y, Qu J. A theoretical study on single-electron reduction of a thiolate-bridged diiron diazene complex. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.09.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Synthesis and characterization of iron(II) and iron(III) complexes with a tridentate O,N,O′-ligand. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2014.12.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Monomeric Dinitrosyl Iron Complexes: Synthesis and Reactivity. PROGRESS IN INORGANIC CHEMISTRY: VOLUME 59 2014. [DOI: 10.1002/9781118869994.ch05] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Synthesis, characterization, and fiber-optic infrared reflectance spectroelectrochemical studies of some dinitrosyl iron diphosphine complexes Fe(NO)2L2 (L = P(C6H4X)3). J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.12.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Pulukkody R, Kyran SJ, Drummond MJ, Hsieh CH, Darensbourg DJ, Darensbourg MY. Hammett correlations as test of mechanism of CO-induced disulfide elimination from dinitrosyl iron complexes. Chem Sci 2014. [DOI: 10.1039/c4sc01523a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The use of Hammett correlations provide experimental evidence for an unusual role of the frontier molecular orbitals of an iron dinitrosyl unit in CO induced reductive elimination of disulfide.
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Affiliation(s)
| | - Samuel J. Kyran
- Department of Chemistry
- Texas A & M University
- College Station
- , USA
| | | | - Chung-Hung Hsieh
- Department of Chemistry
- Texas A & M University
- College Station
- , USA
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15
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Holloway LR, Li L. The Preparation, Structural Characteristics, and Physical Chemical Properties of Metal-Nitrosyl Complexes. STRUCTURE AND BONDING 2013; 154:53-98. [PMID: 29398732 PMCID: PMC5792085 DOI: 10.1007/430_2013_101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The preparation and characterization of a representative group of novel non-heme metal nitrosyl complexes that have been synthesized over the last decade are discussed here. Their structures are examined and classified based on metal type, the number of metal centers present, and the type of ligand that is coordinated with the metal. The ligands can be phosphorus, nitrogen, or sulfur based (with a few exceptions) and can vary depending on the presence of chelation, intermolecular forces, or the presence of other ligands. Structural and bonding characteristics are summarized and examples of reactivity regarding nitrosyl ligands are given. Some of the relevant physical chemical properties of these complexes, including IR, EPR, NMR, UV-vis, cyclic voltammetry, and X-ray crystallography are examined.
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Affiliation(s)
- Lauren R Holloway
- Department of Chemistry and Biochemistry, California State University, 1250 Bellflower Boulevard, Long Beach, CA 90840, USA
| | - Lijuan Li
- Department of Chemistry and Biochemistry, California State University, 1250 Bellflower Boulevard, Long Beach, CA 90840, USA
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16
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Pulukkody R, Kyran SJ, Bethel RD, Hsieh CH, Hall MB, Darensbourg DJ, Darensbourg MY. Carbon Monoxide Induced Reductive Elimination of Disulfide in an N-Heterocyclic Carbene (NHC)/ Thiolate Dinitrosyl Iron Complex (DNIC). J Am Chem Soc 2013; 135:8423-30. [DOI: 10.1021/ja403916v] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Randara Pulukkody
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
| | - Samuel J. Kyran
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
| | - Ryan D. Bethel
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
| | - Chung-Hung Hsieh
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
| | - Michael B. Hall
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
| | - Donald J. Darensbourg
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
| | - Marcetta Y. Darensbourg
- Department of Chemistry, Texas A & M University, College Station, Texas 77843, United States
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17
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Leeladee P, Jameson GNL, Siegler MA, Kumar D, de Visser SP, Goldberg DP. Generation of a high-valent iron imido corrolazine complex and NR group transfer reactivity. Inorg Chem 2013; 52:4668-82. [PMID: 23527920 DOI: 10.1021/ic400280x] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The generation of a new high-valent iron terminal imido complex prepared with a corrolazine macrocycle is reported. The reaction of [Fe(III)(TBP8Cz)] (TBP8Cz = octakis(4-tert-butylphenyl)corrolazinato) with the commercially available chloramine-T (Na(+)TsNCl(-)) leads to oxidative N-tosyl transfer to afford [Fe(IV)(TBP8Cz(+•))(NTs)] in dichloromethane/acetonitrile at room temperature. This complex was characterized by UV-vis, Mössbauer (δ = -0.05 mm s(-1), ΔE(Q) = 2.94 mm s(-1)), and EPR (X-band (15 K), g = 2.10, 2.00) spectroscopies, and together with reactivity patterns and DFT calculations has been established as an iron(IV) species antiferromagnetically coupled with a Cz-π-cation-radical (S(total) = 1/2 ground state). Reactivity studies with triphenylphosphine as substrate show that [Fe(IV)(TBP8Cz(+•))(NTs)] is an efficient NTs transfer agent, affording the phospharane product Ph3P═NTs under both stoichiometric and catalytic conditions. Kinetic analysis of this reaction supports a bimolecular NTs transfer mechanism with rate constant of 70(15) M(-1) s(-1). These data indicate that [Fe(IV)(TBP8Cz(+•))(NTs)] reacts about 100 times faster than analogous Mn terminal arylimido corrole analogues. It was found that two products crystallize from the same reaction mixture of Fe(III)(TBP8Cz) + chloramine-T + PPh3, [Fe(IV)(TBP8Cz)(NPPh3)] and [Fe(III)(TBP8Cz)(OPPh3)], which were definitively characterized by X-ray crystallography. The sequential production of Ph3P═NTs, Ph3P═NH, and Ph3P═O was observed by (31)P NMR spectroscopy and led to a proposed mechanism that accounts for all of the observed products. The latter Fe(III) complex was then rationally synthesized and structurally characterized from Fe(III)(TBP8Cz) and OPPh3, providing an important benchmark compound for spectroscopic studies. A combination of Mössbauer and EPR spectroscopies led to the characterization of both intermediate spin (S = 3/2 and low spin (S = 1/2) Fe(III) corrolazines, as well as a formally Fe(IV) corrolazine which may also be described by its valence tautomer Fe(III)(Cz(+•)).
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Affiliation(s)
- Pannee Leeladee
- Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
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18
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Tsou CC, Tsai FT, Chen HY, Hsu IJ, Liaw WF. Insight into One-Electron Oxidation of the {Fe(NO)2}9 Dinitrosyl Iron Complex (DNIC): Aminyl Radical Stabilized by [Fe(NO)2] Motif. Inorg Chem 2013; 52:1631-9. [DOI: 10.1021/ic302537d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chih-Chin Tsou
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Fu-Te Tsai
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Huang-Yeh Chen
- Department of Molecular Science
and Engineering, National Taipei University of Technology, Taipei 10608 Taiwan
| | - I-Jui Hsu
- Department of Molecular Science
and Engineering, National Taipei University of Technology, Taipei 10608 Taiwan
| | - Wen-Feng Liaw
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
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19
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Jones MW, Powell DR, Richter-Addo GB. Dinitro-sylbis[tris-(4-methyl-phen-yl)phosphane]iron. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m331. [PMID: 21522262 PMCID: PMC3052133 DOI: 10.1107/s160053681100465x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 02/07/2011] [Indexed: 11/17/2022]
Abstract
The title compound, [Fe(NO)2(C21H21P)2], belongs to the family of metal dinitrosyl compounds with the general formula Fe(NO)2(L)x, referred to collectively as ‘dinitrosyl iron compounds’ (DNICs). Herein we report the structure of a dinitrosyl iron diphosphane complex, [Fe(NO)2L2], with L = P(C6H4-p-CH3)3. There are two crystallographically independent but chemically equal molecules per asymmetric unit. The iron atom in each molecule is tetrahedrally coordinated by two phosphane ligands and two NO groups, with Fe—N—O angles in the range 173.84 (15)–179.31 (16)°.
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Affiliation(s)
- Myron W Jones
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019-5251, USA
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20
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Jones MW, Powell DR, Richter-Addo GB. Dinitro-sylbis[tris-(4-fluoro-phen-yl)phosphane]iron chloro-form monosolvate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m332. [PMID: 21522263 PMCID: PMC3051982 DOI: 10.1107/s1600536811004673] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 02/07/2011] [Indexed: 11/10/2022]
Abstract
The title compound, [Fe(NO)(2)(C(18)H(12)F(3)P)(2)]·CHCl(3), belongs to the family of metal dinitrosyl compounds with the general formula Fe(NO)(2)(L)(x), referred to collectively as 'dinitrosyl iron compounds' (DNICs). Herein we report the structure of a dinitrosyl iron diphosphane complex, (Fe(NO)(2)L(2), with L = P(C(6)H(4)-p-F)(3). The structure includes one metal complex mol-ecule and one chloro-form solvent mol-ecule. The iron atom is tetra-hedrally coordinated with two phosphane ligands and with two NO groups with Fe-N-O angles of 178.1 (2) and 177.0 (2)°.
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Affiliation(s)
- Myron W Jones
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019-5251, USA
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21
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Tonzetich ZJ, Héroguel F, Do LH, Lippard SJ. Chemistry of nitrosyliron complexes supported by a β-diketiminate ligand. Inorg Chem 2011; 50:1570-9. [PMID: 21244036 DOI: 10.1021/ic102300d] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Several nitrosyl complexes of Fe and Co have been prepared using the sterically hindered Ar-nacnac ligand (Ar-nacnac = anion of [(2,6-diisopropylphenyl)NC(Me)](2)CH). The dinitrosyliron complexes [Fe(NO)(2)(Ar-nacnac)] (1) and (Bu(4)N)[Fe(NO)(2)(Ar-nacnac)] (2) react with [Fe(III)(TPP)Cl] (TPP = tetraphenylporphine dianion) to generate [Fe(II)(NO)(TPP)] and the corresponding mononitrosyliron complexes. The factors governing NO transfer with dinitrosyliron complexes (DNICs) 1 and 2 are evaluated, together with the chemistry of the related mononitrosyliron complex, [Fe(NO)Br(Ar-nacnac)] (4). The synthesis and properties of the related cobalt dinitrosyl [Co(NO)(2)(Ar-nacnac)] (3) is also discussed for comparison to DNICs 1 and 2. The solid-state structures of several of these compounds as determined by X-ray crystallography are reported.
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Affiliation(s)
- Zachary J Tonzetich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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De La Cruz C, Sheppard N. A structure-based analysis of the vibrational spectra of nitrosyl ligands in transition-metal coordination complexes and clusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:7-28. [PMID: 21123107 DOI: 10.1016/j.saa.2010.08.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 07/17/2010] [Accepted: 08/02/2010] [Indexed: 05/30/2023]
Abstract
The vibrational spectra of nitrogen monoxide or nitric oxide (NO) bonded to one or to several transition-metal (M) atom(s) in coordination and cluster compounds are analyzed in relation to the various types of such structures identified by diffraction methods. These structures are classified in: (a) terminal (linear and bent) nitrosyls, [M(σ-NO)] or [M(NO)]; (b) twofold nitrosyl bridges, [M2(μ2-NO)]; (c) threefold nitrosyl bridges, [M3(μ3-NO)]; (d) σ/π-dihaptonitrosyls or "side-on" nitrosyls; and (e) isonitrosyls (oxygen-bonded nitrosyls). Typical ranges for the values of internuclear N-O and M-N bond-distances and M-N-O bond-angles for linear nitrosyls are: 1.14-1.20 Å/1.60-1.90 Å/180-160° and for bent nitrosyls are 1.16-1.22 Å/1.80-2.00 Å/140-110°. The [M2(μ2-NO)] bridges have been divided into those that contain one or several metal-metal bonds and those without a formal metal/metal bond (M⋯M). Typical ranges for the M-M, N-O, M-N bond distances and M-N-M bond angles for the normal twofold NO bridges are: 2.30-3.00 Å/1.18-1.22 Å/1.80-2.00 Å/90-70°, whereas for the analogous ranges of the long twofold NO bridges these are 3.10-3.40 Å/1.20-1.24 Å/1.90-2.10 Å/130-110°. In both situations the N-O vector is approximately at right angle to the M-M (or M⋯M) vector within the experimental error; i.e. the NO group is symmetrical bonded to the two metal atoms. In contrast the threefold NO bridges can be symmetrically or unsymmetrically bonded to an M3-plane of a cluster compound. Characteristic values for the N-O and M-N bond-distances of these NO bridges are: 1.24-1.28 Å/1.80-1.90 Å, respectively. As few dihaptonitrosyl and isonitrosyl complexes are known, the structural features of these are discussed on an individual basis. The very extensive vibrational spectroscopy literature considered gives emphasis to the data from linearly bonded NO ligands in stable closed-shell metal complexes; i.e. those which are consistent with the "effective atomic number (EAN)" or "18-electron" rule. In the paucity of enough vibrational spectroscopic data from complexes with only nitrosyl ligands, it turned out to be very advantageous to use wavenumbers from the spectra of uncharged and saturated nitrosyl/carbonyl metal complexes as references, because the presence of a carbonyl ligand was found to be neutral in its effect on the ν(NO)-values. The wide wavenumber range found for the ν(NO) values of linear MNO complexes are then presented in terms of the estimated effects of net ionic charges, or of electron-withdrawing or electron-donating ligands bonded to the same metal atom. Using this approach we have found that: (a) the effect for a unit positive charge is [plus 100 cm(-1)] whereas for a unit negative charge it is [minus 145 cm(-1)]. (b) For electron-withdrawing co-ligands the estimated effects are: terminal CN [plus 50 cm(-1)]; terminal halogens [plus 30 cm(-1)]; bridging or quasi-bridging halogens [plus 15 cm(-1)]. (c) For electro donating co-ligands they are: PF3 [plus 10 cm(-1)]; P(OPh)3 [-30 cm(-1)]; P(OR)3 (R=alkyl group) [-40 cm(-1)]; PPh3 [-55 cm(-1)]; PR3 (R=alkyl group) [-70 cm(-1)]; and η5-C5H5 [-60 cm(-1)]; η5-C5H4Me [-70 cm(-1)]; η5-C5Me5 [-80 cm(-1)]. These values were mostly derived from the spectra of nitrosyl complexes that have been corrected for the presence of only a single electronically-active co-ligand. After making allowance for ionic charges or strongly-perturbing ligands on the same metal atom, the adjusted 'neutral-co-ligand' ν(NO)*-values (in cm(-1)) are for linear nitrosyl complexes with transition metals of Period 4 of the Periodic Table, i.e. those with atomic orbitals (…4s3d4p): [ca. 1750, Cr(NO)]; [1775,Mn(NO)]; [1796,Fe(NO)]; [1817,Co(NO)]; [ca. 1840, Ni(NO)]. Period 5 (…5s4d5p): [1730 Mo(NO)]; [-, Tc(NO)]; [1745,Ru(NO)]; [1790,Rh(NO)]; [ca. 1845, Pd(NO)]. Period 6 (…6s4f5d6p), [1720,W(NO)]; [1730,Re(NO)]; [1738,Os(NO)]; [1760,Ir(NO)]; [-, Pt] respectively. Environmental differences to these values, e.g. data taken in polar solutions or in the crystalline state, can cause ν(NO)* variations (mostly reductions) of up to ca. 30 cm(-1). Three spectroscopic criteria are used to distinguish between linear and bent NO groups. These are: (i) the values of ν(14NO) themselves, and (ii) the isotopic band shift--(IBS)--parameter which is defined as [ν(14NO)-ν(15NO)], and, (iii) the isotopic band ratio--(IBR)--given by [ν(15NO/ν14NO)]. The former is illustrated with the ν(14NO)-data from trigonal bipyramidal (TBP) and tetragonal pyramidal (TP) structures of [M(NO(L)4] complexes (where M=Fe, Co, Ru, Rh, Os, Ir and L=ligand). These values indicate that linear (180-170°) and strongly bent (130-120°) NO groups in these compounds absorb over the 1862-1690 cm(-1) and 1720-1525 cm(-1)-regions, respectively. As was explicitly demonstrated for the linear nitrosyls, these extensive regions reflect the presence in different complexes of a very wide range of co-ligands or ionic charges associated with the metal atom of the nitrosyl group. A plot of the IBS parameter against M-N-O bond-angle for compounds with general formulae [M(NO)(L)y] (y=4, 5, 6) reveals that the IBS-values are clustered between 45 and 30 cm(-1) or between 37 and 25 cm(-1) for linear or bent NO groups, respectively. A plot of IBR shows a less well defined pattern. Overall it is suggested that bent nitrosyls absorb ca. 60-100 cm(-1) below, and have smaller co-ligand band-shifts, than their linear counterparts. Spectroscopic ν(NO) data of the bridging or other types of NO ligands are comparatively few and therefore it has not been possible to give other than general ranges for 'neutral co-ligand' values. Moreover the bridging species data often depend on corrections for the effects of electronically-active co-ligands such as cyclopentadienyl-like groups. The derived neutral co-ligand estimates, ν(NO)*, are: (a) twofold bridged nitrosyls with a metal-metal bond order of one, or greater than one, absorb at ca. 1610-1490 cm(-1); (b) twofold bridged nitrosyl ligands with a longer non-bonding M⋯M distance, ca. 1520-1490 cm(-1); (c) threefold bridged nitrosyls, ca. 1470-1410 cm(-1); (d) σ/π dihaptonitrosyl, [M(η2-NO)], where M=Cr, Mn and Ni; ca. 1490-1440 cm(-1). Isonitrosyls, from few examples, appear to absorb below ca. 1100 cm(-1). To be published DFT calculations of the infrared and Raman spectra of complexes with formulae [M(NO)4-n(CO)n] (M=Cr, Mn, Fe, Co, Ni, and n=0, 1, 2, 3, 4, respectively) are used as models for the assignments of the ν(MN) and δ(MNO) bands from more complex metal nitrosyls.
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Affiliation(s)
- Carlos De La Cruz
- Laboratorio de Espectroscopía Molecular y Atómica, Departamento de Química, Facultad Experimental de Ciencias, La Universidad del Zulia, Maracaibo, Estado Zulia, República Bolivariana de Venezuela
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Hsieh CH, Chupik RB, Brothers SM, Hall MB, Darensbourg MY. cis-Dithiolatonickel as metalloligand to dinitrosyl iron units: the di-metallic structure of Ni(μ-SR)[Fe(NO)2] and an unexpected, abbreviated metalloadamantyl cluster, Ni2(μ-SR)4[Fe(NO)2]3. Dalton Trans 2011; 40:6047-53. [DOI: 10.1039/c1dt10438a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hsieh CH, Darensbourg MY. A {Fe(NO)3}10 Trinitrosyliron Complex Stabilized by an N-Heterocyclic Carbene and the Cationic and Neutral {Fe(NO)2}9/10 Products of Its NO Release. J Am Chem Soc 2010; 132:14118-25. [DOI: 10.1021/ja104135x] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Chung-Hung Hsieh
- Department of Chemistry, Texas A&M University, College Station, Texas 77843
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Wang JH, Chen CH. New Members of the {Fe(NO)2}10 Dinitrosyliron Complexes Bound with [Thiolate, Thiolate] and [Amide, Amide] Ligations. Inorg Chem 2010; 49:7644-6. [DOI: 10.1021/ic101126v] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jheng-Hong Wang
- School of Applied Chemistry, Chung Shan Medical University, Taichung City 40201, Taiwan
| | - Chien-Hong Chen
- School of Applied Chemistry, Chung Shan Medical University, Taichung City 40201, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung City, Taiwan
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Ye S, Neese F. The Unusual Electronic Structure of Dinitrosyl Iron Complexes. J Am Chem Soc 2010; 132:3646-7. [DOI: 10.1021/ja9091616] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shengfa Ye
- Lehrstuhl für Theoretische Chemie, Universität Bonn, Bonn D-53115, Germany
| | - Frank Neese
- Lehrstuhl für Theoretische Chemie, Universität Bonn, Bonn D-53115, Germany
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Tsai MC, Tsai FT, Lu TT, Tsai ML, Wei YC, Hsu IJ, Lee JF, Liaw WF. Relative Binding Affinity of Thiolate, Imidazolate, Phenoxide, and Nitrite Toward the {Fe(NO)2} Motif of Dinitrosyl Iron Complexes (DNICs): The Characteristic Pre-Edge Energy of {Fe(NO)2}9 DNICs. Inorg Chem 2009; 48:9579-91. [DOI: 10.1021/ic901675p] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ming-Che Tsai
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Fu-Te Tsai
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Tsai-Te Lu
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Ming-Li Tsai
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yin-Ching Wei
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - I-Jui Hsu
- Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - Wen-Feng Liaw
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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Tonzetich ZJ, Do LH, Lippard SJ. Dinitrosyl iron complexes relevant to Rieske cluster nitrosylation. J Am Chem Soc 2009; 131:7964-5. [PMID: 19459625 DOI: 10.1021/ja9030159] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of the Rieske cluster model complex (Et(4)N)(2)[(N(2)CHPh)Fe(2)S(2)(S(2)-o-xyl)] (N(2)CHPh = dianion of 2,2'-(phenylmethylene)bis(3-methylindole); S(2)-o-xyl = dianion of 1,2-phenylenedimethanethiol) with nitric oxide results in disassembly of the iron-sulfur core and formation of {Fe(NO)(2)}(9) dinitrosyliron complexes (DNICs). Isolation and characterization of these DNICs, including the new compound, (Et(4)N)[(N(2)CHPh)Fe(NO)(2)], demonstrates a homology between the synthetic Riekse cluster and purely thiolate-bound Fe(2)S(2) clusters in reactions involving NO. To model the nitrogen-rich environment of Rieske cluster-derived dinitroysliron species, a new type of neutral {Fe(NO)(2)}(9) DNIC was prepared containing a beta-diketiminate ligand. One-electron reduction of this compound affords the isolable {Fe(NO)(2)}(10) DNIC. These compounds represent a rare example of structurally analogous DNIC redox partners.
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Affiliation(s)
- Zachary J Tonzetich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Dillinger SAT, Schmalle HW, Fox T, Berke H. Developing iron nitrosyl complexes as NO donor prodrugs. Dalton Trans 2007:3562-71. [PMID: 17680047 DOI: 10.1039/b702461d] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel class of water-soluble iron nitrosyl complexes has been developed for use as NO donor prodrugs. To elaborate these NO prodrugs various water-soluble ligands were used such as P(CH2OH)3, 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane (PTA), 1,2-bis[bis(hydroxymethyl)phosphino]ethane (HMPE), 1,2-bis[bis(hydroxymethyl)phosphino]benzene (TMBz), cysteamine, cysteamine hydrochloride, L-cysteine ethyl ester hydrochloride (LCEE) and pyrimidine-2-thiol (pyrim). The mononuclear complexes Fe(NO)2P(CH2OH)3Cl , Fe(NO)2(P(CH2OH)3)2, Fe(NO)2(PTA)2, Fe(NO)2HMPE , Fe(NO)2TMBz , [Fe(NO)2pyrimI] , [Fe(NO)3P(CH2OH)3][X] (X=PF6, SbF6, BF4) and the dinuclear species [Fe(NO)2S(CH2)2NH3Cl]2, [Fe(NO)2S(CH2)2NH3I2] , [Fe(NO)2LCEE]2 and [Fe(NO)2pyrim]2 were obtained. Complexes , , , , , , and are water-soluble. , and were identified as nitroxyl and , , , and as nitric oxide donors by applying an EPR NO-trap assay. To determine the amount of nitric oxide which was released from the nitric oxide donors, an additional electrochemical methodology was used. The equilibrium release or the trapping concentration of NO was also studied by a UV-vis method, which allowed the rate constant of NO release to be determined.
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Affiliation(s)
- Sandra A T Dillinger
- Anorganisch-chemisches Institut, Universität Zürich, Winterthuerstrasse 190, 8057, Zürich, Switzerland
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Beck W, Klapötke TM, Mayer P. Structure of Bromotrinitrosyl Iron, [Fe(NO)3Br], and DFT Calculations of the Structures of [Fe(NO)3X] (X = Cl, Br, I). Z Anorg Allg Chem 2006. [DOI: 10.1002/zaac.200500415] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Beck W, Enzmann A, Mayer P. Formation and Structure of Iodotrinitrosyliron, [Fe(NO)3I]. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200400453] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hörsken A, Zheng G, Stradiotto M, McCrory CT, Li L. Iron dinitrosyl complexes of TCNE: a synthetic, X-ray crystallographic, high field NMR and electrochemical study. J Organomet Chem 1998. [DOI: 10.1016/s0022-328x(98)00399-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abdul-Rahman A, Amoroso AA, Branston TN, Das A, Maher JP, McCleverty JA, Ward MD, Wlodarczyk A. Dinuclear molybdenum complexes derived from diphenols: electrochemical interactions and reduced species. Polyhedron 1997. [DOI: 10.1016/s0277-5387(97)00199-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cummings DA, McMaster J, Rieger AL, Rieger PH. EPR Spectroscopic and Theoretical Study of Chromium(I) Carbonyl Phosphine and Phosphonite Complexes. Organometallics 1997. [DOI: 10.1021/om970252h] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Derek A. Cummings
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Jonathan McMaster
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Anne L. Rieger
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
| | - Philip H. Rieger
- Department of Chemistry, Brown University, Providence, Rhode Island 02912
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