1
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Abucayon EG, Khade RL, Powell DR, Zhang Y, Richter-Addo GB. Lewis Acid Activation of the Ferrous Heme-NO Fragment toward the N-N Coupling Reaction with NO To Generate N 2O. J Am Chem Soc 2018; 140:4204-4207. [PMID: 29502400 DOI: 10.1021/jacs.7b13681] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Bacterial NO reductase (bacNOR) enzymes utilize a heme/non-heme active site to couple two NO molecules to N2O. We show that BF3 coordination to the nitrosyl O-atom in (OEP)Fe(NO) activates it toward N-N bond formation with NO to generate N2O. 15N-isotopic labeling reveals a reversible nitrosyl exchange reaction and follow-up N-O bond cleavage in the N2O formation step. Other Lewis acids (B(C6F5)3 and K+) also promote the NO coupling reaction with (OEP)Fe(NO). These results, complemented by DFT calculations, provide experimental support for the cis: b3 pathway in bacNOR.
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Affiliation(s)
- Erwin G Abucayon
- Department of Chemistry and Biochemistry , University of Oklahoma , Norman , Oklahoma 73019 , United States
| | - Rahul L Khade
- Department of Chemistry and Chemical Biology , Stevens Institute of Technology , Castle Point on Hudson , Hoboken , New Jersey 07030 , United States
| | - Douglas R Powell
- Department of Chemistry and Biochemistry , University of Oklahoma , Norman , Oklahoma 73019 , United States
| | - Yong Zhang
- Department of Chemistry and Chemical Biology , Stevens Institute of Technology , Castle Point on Hudson , Hoboken , New Jersey 07030 , United States
| | - George B Richter-Addo
- Department of Chemistry and Biochemistry , University of Oklahoma , Norman , Oklahoma 73019 , United States
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2
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Hess GD, Fiedler T, Hampel F, Gladysz JA. Octahedral Gyroscope-like Molecules Consisting of Rhenium Rotators within Cage-like Dibridgehead Diphosphine Stators: Syntheses, Substitution Reactions, Structures, and Dynamic Properties. Inorg Chem 2017; 56:7454-7469. [DOI: 10.1021/acs.inorgchem.7b00909] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Gisela D. Hess
- Institut
für Organische Chemie and Interdisciplinary Center for Molecular
Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Tobias Fiedler
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
| | - Frank Hampel
- Institut
für Organische Chemie and Interdisciplinary Center for Molecular
Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054 Erlangen, Germany
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, United States
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3
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Molecular complexes of group 13 element trihalides, pentafluorophenyl derivatives and Lewis superacids. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.02.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Dong H, Jiang Y, Berke H. Rhenium-mediated dehydrogenative silylation and highly regioselective hydrosilylation of nitrile substituted olefins. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.10.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Gong Y, Wu T, Li J, Lin J. Unsymmetrical coordinated Ag(I)–olefin complex based on exo-7-oxabicyclo-[2.2.1]-5-heptene-2,3-dicarboxylate: Synthesis, structure and electrocatalytical property. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.01.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Dudle B, Blacque O, Berke H. Ethylene Reactions of a [ReH(η2-BH4)(NO)(PPh3)2] Complex: Reductive Elimination of Ethane and Oxidative Coupling to Butadiene. Organometallics 2012. [DOI: 10.1021/om201187w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Balz Dudle
- Institute of Inorganic
Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
| | - Olivier Blacque
- Institute of Inorganic
Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
| | - Heinz Berke
- Institute of Inorganic
Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
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7
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Perera T, Abhayawardhana P, Fronczek FR, Marzilli PA, Marzilli LG. Iminoether Complexes of the Type,
fac
‐[Re(CO)
3
L{HNC(CH
3
)OCH
3
}]BF
4
(L = Bipyridine or a Substituted Bipyridine): Synthesis and Properties. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201100768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Theshini Perera
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA, Fax: +1‐225‐578‐3463
| | - Pramuditha Abhayawardhana
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA, Fax: +1‐225‐578‐3463
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA, Fax: +1‐225‐578‐3463
| | - Patricia A. Marzilli
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA, Fax: +1‐225‐578‐3463
| | - Luigi G. Marzilli
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA, Fax: +1‐225‐578‐3463
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8
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Dudle B, Rajesh K, Blacque O, Berke H. Rhenium Nitrosyl Complexes Bearing Large-Bite-Angle Diphosphines. Organometallics 2011. [DOI: 10.1021/om200092y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Dudle B, Rajesh K, Blacque O, Berke H. Rhenium in Homogeneous Catalysis: [ReBrH(NO)(labile ligand)(large-bite-angle diphosphine)] Complexes as Highly Active Catalysts in Olefin Hydrogenations. J Am Chem Soc 2011; 133:8168-78. [DOI: 10.1021/ja107245k] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Balz Dudle
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
| | - Kunjanpillai Rajesh
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
| | - Olivier Blacque
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
| | - Heinz Berke
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich
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10
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A mild and efficient rhenium-catalyzed transfer hydrogenation of terminal olefins using alcoholysis of amine–borane adducts as a reducing system. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.01.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Jiang Y, Blacque O, Berke H. Probing the catalytic potential of chloro nitrosyl rhenium(I) complexes. Dalton Trans 2011; 40:2578-87. [PMID: 21286595 DOI: 10.1039/c0dt00842g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction of the mononitrosyl Re(II) salt [NMe(4)](2)[ReCl(5)(NO)] (1) with zinc in acetonitrile afforded the Re(i) dichloride complex [ReCl(2)(NO)(CH(3)CN)(3)] (2). Subsequent ligand substitution reactions with PCy(3), PiPr(3) and P(p-tolyl)(3) afforded the bisphosphine Re(i) complexes [ReCl(2)(NO)(PR(3))(2)(CH(3)CN)] (3, R = Cy a, iPr b, p-tolyl c) in good yields. The acetonitrile ligand in 3 is labile, permitting its replacement with H(2) (1 bar) to afford the dihydrogen Re(I) complexes [ReCl(2)(NO)(PR(3))(2)(η(2)-H(2))] (4, R = Cy a, iPr b). The catalytic activity of 2, 3 and 4 in hydrogen-related catalyses including dehydrocoupling of Me(2)NH·BH(3), dehydrogenative silylation of styrenes, and hydrosilylation of ketones and aryl aldehydes were investigated, with the main focus on phosphine and halide effects. In the dehydrocoupling of Me(2)NH·BH(3), the phosphine-free complex 2 exhibits the same activity as the bisphosphine-substituted systems. In the dehydrogenative silylation of styrenes, 3a and 4a bearing PCy(3) ligands exhibit high catalytic activities. Monochloro Re(I) hydrides [Re(Cl)(H)(NO)(PR(3))(2)(CH(3)CN)] (5, R = Cy a, iPr b) were proven to be formed in the initiation pathway. The phosphine-free complex 2 showed in dehydrogenative silylations even higher activity than the bisphosphine derivatives, which further emphasizes the importance of a facile phosphine dissociation in the catalytic process. In the hydrosilylation of ketones and aryl aldehydes, at least one rhenium-bound phosphine is required to ensure high catalytic activity.
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Affiliation(s)
- Yanfeng Jiang
- Anorganisch-chemisches Institut, Universität Zürich. Winterthurerstr. 190, CH-8037, Zürich, Schweiz
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12
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Jiang Y, Blacque O, Fox T, Frech CM, Berke H. Facile synthetic access to rhenium(II) complexes: activation of carbon-bromine bonds by single-electron transfer. Chemistry 2010; 16:2240-9. [PMID: 20066700 DOI: 10.1002/chem.200902600] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The five-coordinated Re(I) hydride complexes [Re(Br)(H)(NO)(PR(3))(2)] (R=Cy 1 a, iPr 1 b) were reacted with benzylbromide, thereby affording the 17-electron mononuclear Re(II) hydride complexes [Re(Br)(2)(H)(NO)(PR(3))(2)] (R=Cy 3 a, iPr 3 b), which were characterized by EPR, cyclic voltammetry, and magnetic susceptibility measurements. In the case of dibromomethane or bromoform, the reaction of 1 afforded Re(II) hydrides 3 in addition to Re(I) carbene hydrides [Re(=CHR(1))(Br)(H)(NO)(PR(3))(2)] (R(1)=H 4, Br 5; R=Cy a, iPr b) in which the hydride ligand is positioned cis to the carbene ligand. For comparison, the dihydrogen Re(I) dibromide complexes [Re(Br)(2)(NO)(PR(3))(2)(eta(2)-H(2))] (R=Cy 2 a, iPr 2 b) were reacted with allyl- or benzylbromide, thereby affording the monophosphine Re(II) complex salts [R(3)PCH(2)R'][Re(Br)(4)(NO)(PR(3))] (R'=-CH=CH(2) 6, Ph 7). The reduction of Re(II) complexes has also been examined. Complex 3 a or 3 b can be reduced by zinc to afford 1 a or 1 b in high yield. Under catalytic conditions, this reaction enables homocoupling of benzylbromide (turnover frequency (TOF): 3 a 150, 3 b 134 h(-1)) or allylbromide (TOF: 3 a 575, 3 b 562 h(-1)). The reaction of 6 a and 6 b with zinc in acetonitrile affords in good yields the monophosphine Re(I) complexes [Re(Br)(2)(NO)(MeCN)(2)(PR(3))] (R=Cy 8 a, iPr 8 b), which showed high catalytic activity toward highly selective dehydrogenative silylation of styrenes (maximum TOF of 61 h(-1)). Single-electron transfer (SET) mechanisms were proposed for all these transformations. The molecular structures of 3 a, 6 a, 6 b, 7 a, 7 b, and 8 a were established by single-crystal X-ray diffraction studies.
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Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, 8037 Zürich, Switzerland
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13
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Dong H, Berke H. A Convenient and Efficient Rhenium-Catalyzed Hydrosilylation of Ketones and Aldehydes. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900246] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Jiang Y, Blacque O, Fox T, Frech CM, Berke H. From Alkynes to Carbenes Mediated by [Re(Br)(H)(NO)(PR3)2] (R = Cy, iPr) Complexes. Organometallics 2009. [DOI: 10.1021/om900459x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037, Zürich, Switzerland
| | - Olivier Blacque
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037, Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037, Zürich, Switzerland
| | - Christian M. Frech
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037, Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037, Zürich, Switzerland
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15
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Jiang Y, Blacque O, Fox T, Frech CM, Berke H. Highly selective dehydrogenative silylation of alkenes catalyzed by rhenium complexes. Chemistry 2009; 15:2121-8. [PMID: 19137560 DOI: 10.1002/chem.200802019] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Choosy chemicals: Rhenium(I) complexes of type [ReBr(2)(L)(NO)(PR(3))(2)] (L=H(2) (1), CH(3)CN (2), ethylene (3); R=iPr (a), cyclohexyl (b)) proved to be suitable catalyst precursors for the highly selective dehydrogenative silylation of alkenes. Two types of rhenium(I) hydride species, [ReBrH(NO)(PR(3))(2)] (4) and [ReBr(eta(2)-CH(2)=CHR(1))H(NO)(PR(3))(2)] (5), were found in the [ReBr(2)(L)(NO)(PR(3))(2)]-catalyzed dehydrogenative silylation of alkenes.Rhenium(I) complexes of type [ReBr(2)(L)(NO)(PR(3))(2)] (L=H(2) (1), CH(3)CN (2), and ethylene (3); R=iPr (a) and cyclohexyl (Cy; b)) catalyze dehydrogenative silylation of alkenes in a highly selective manner to yield silyl alkenes and the corresponding alkanes. Hydrosilylation products appear only rarely depending on the type of olefinic substituent, and if they do appear then it is in very minor amounts. Mechanistic studies showed that two rhenium(I) hydride species of type [ReBrH(NO)(PR(3))(2)] (R=iPr (4 a) and Cy (4 b)) and [ReBr(eta(2)-CH(2)=CHR(1))H(NO)(PR(3))(2)] (R(1)=p-CH(3)C(6)H(4), R=iPr (5 a), Cy (5 b); R(1)=H, R=iPr (5 a'), Cy (5 b')) are involved in the initiation pathway of the catalysis. The rate-determining steps of the catalytic cycle are the phosphine dissociation from complexes of type 5 and the reductive eliminations to form the alkane components. The catalytic cycle implies that the given rhenium systems have the ability to activate C-H and Si-H bonds through the aid of a facile redox interplay of Re(I) and Re(III) species. The molecular structures of 4 b and 5 a were established by means of X-ray diffraction studies.
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Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, 8037 Zürich, Switzerland
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16
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Choualeb A, Maccaroni E, Blacque O, Schmalle HW, Berke H. Rhenium Nitrosyl Complexes for Hydrogenations and Hydrosilylations. Organometallics 2008. [DOI: 10.1021/om7011024] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Choualeb
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - E. Maccaroni
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - O. Blacque
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - H. W. Schmalle
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - H. Berke
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
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