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Chacon-Teran MA, Findlater M. Redox‐active BIAN‐based Iron Complexes in Catalysis. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Michael Findlater
- University of California Merced Department of Chemistry 5200 N. Lake Road 95340 Merced UNITED STATES
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2
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Generation of a Hetero Spin Complex from Iron(II) Iodide with Redox Active Acenaphthene-1,2-Diimine. Molecules 2021; 26:molecules26102998. [PMID: 34070061 PMCID: PMC8158106 DOI: 10.3390/molecules26102998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 11/16/2022] Open
Abstract
The reaction of the redox active 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene (dpp-BIAN) and iron(II) iodide in acetonitrile led to a new complex [(dpp-BIAN)FeIII2] (1). Molecular structure of 1 was determined by the single crystal X-ray diffraction analysis. The spin state of the iron cation in complex 1 at room temperature and the magnetic behavior of 1 in the temperature range of 2–300 K were studied using Mossbauer spectroscopy and magnetic susceptibility measurements, respectively. The neutral character of dpp-BIAN in 1 was confirmed by IR and UV spectroscopy. The electrochemistry of 1 was studied in solution and solid state using cyclic voltammetry. The generation of the radical anion form of the dpp-BIAN ligand upon reduction of 1 in a CH2Cl2 solution was monitored by EPR spectroscopy.
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3
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Maier TM, Gawron M, Coburger P, Bodensteiner M, Wolf R, van Leest NP, de Bruin B, Demeshko S, Meyer F. Low-Valence Anionic α-Diimine Iron Complexes: Synthesis, Characterization, and Catalytic Hydroboration Studies. Inorg Chem 2020; 59:16035-16052. [PMID: 33078926 DOI: 10.1021/acs.inorgchem.0c02606] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The synthesis of rare anionic heteroleptic and homoleptic α-diimine iron complexes is described. Heteroleptic BIAN (bis(aryl)iminoacenaphthene) complexes 1-[K([18]c-6)(thf)0.5] and 2-[K([18]c-6)(thf)2] were synthesized by reduction of the [(BIAN)FeBr2] precursor complex using stoichiometric amounts of potassium graphite in the presence of the corresponding olefin. The electronic structure of these paramagnetic species was investigated by numerous spectroscopic analyses (NMR, EPR, 57Fe Mössbauer, UV-vis), magnetic measurements (Evans NMR method, SQUID), and theoretical techniques (DFT, CASSCF). Whereas anion 1 is a low-spin complex, anion 2 consists of an intermediate-spin Fe(III) center. Both complexes are efficient precatalysts for the hydroboration of carbonyl compounds under mild reaction conditions. The reaction of bis(anthracene) ferrate(1-) gave the homoleptic BIAN complex 3-[K([18]c-6)(thf)], which is less catalytically active. The electronic structure was elucidated with the same techniques as described for complexes 1-[K([18]c-6)(thf)0.5] and 2-[K([18]c-6)(thf)2] and revealed an Fe(II) species in a quartet ground state.
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Affiliation(s)
- Thomas M Maier
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Martin Gawron
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Peter Coburger
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Michael Bodensteiner
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Robert Wolf
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Nicolaas P van Leest
- van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Franc Meyer
- Institute of Inorganic Chemistry, University of Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany.,International Center for Advanced Studies of Energy Conversion (ICASEC), University of Göttingen, Tammannstrasse 6, Göttingen 37077, Germany
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4
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Liang Q, Lin JH, DeMuth JC, Neidig ML, Song D. Syntheses and characterizations of iron complexes of bulky o-phenylenediamide ligand. Dalton Trans 2020; 49:12287-12297. [DOI: 10.1039/d0dt02087g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the reactivity of the iron complexes of a bulky phenylenediamide ligand.
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Affiliation(s)
- Qiuming Liang
- Davenport Chemical Research Laboratories
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Jack H. Lin
- Davenport Chemical Research Laboratories
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | | | | | - Datong Song
- Davenport Chemical Research Laboratories
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
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5
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Wang J, Han J, Xie X, Xue Z, Fliedel C, Poli R. FeBr2-Catalyzed Bulk ATRP Promoted by Simple Inorganic Salts. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jirong Wang
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Jianyu Han
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiaolin Xie
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Zhigang Xue
- Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Christophe Fliedel
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
| | - Rinaldo Poli
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 Route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
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6
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Sandl S, Maier TM, van Leest NP, Kröncke S, Chakraborty U, Demeshko S, Koszinowski K, de Bruin B, Meyer F, Bodensteiner M, Herrmann C, Wolf R, Jacobi von Wangelin A. Cobalt-Catalyzed Hydrogenations via Olefin Cobaltate and Hydride Intermediates. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01584] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian Sandl
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Thomas M. Maier
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Nicolaas P. van Leest
- van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Susanne Kröncke
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Uttam Chakraborty
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Serhiy Demeshko
- Institute of Inorganic Chemistry, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Konrad Koszinowski
- Institute of Organic and Biomolecular Chemistry, Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Bas de Bruin
- van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Franc Meyer
- Institute of Inorganic Chemistry, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
| | - Michael Bodensteiner
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Carmen Herrmann
- Department of Chemistry, University of Hamburg, Martin Luther King Pl 6, 20146 Hamburg, Germany
| | - Robert Wolf
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
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Saini A, Smith CR, Wekesa FS, Helms AK, Findlater M. Conversion of aldimines to secondary amines using iron-catalysed hydrosilylation. Org Biomol Chem 2019; 16:9368-9372. [PMID: 30516772 DOI: 10.1039/c8ob01262h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iron-catalyzed hydrosilylation of imines to amines using a well-defined iron complex is reported. This method employs relatively mild conditions, by reaction of imine, (EtO)3SiH in a 1 : 2 ratio in the presence of 1 mol% precatalyst ([BIAN]Fe(η6-toluene), 3, BIAN = bis(2,6-diisopropylaniline)acenaphthene) at 70 °C. A broad scope of imines was readily converted into the corresponding secondary amines without the need for precatalyst activators.
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Affiliation(s)
- Anu Saini
- Department of Chemistry & Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
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8
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Larson PJ, Wekesa FS, Singh A, Smith CR, Rajput A, McGovern GP, Unruh DK, Cozzolino AF, Findlater M. Synthesis, characterization, electrochemical properties and theoretical calculations of (BIAN) iron complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Khrizanforova V, Morozov V, Khrizanforov M, Lukoyanov A, Kataeva O, Fedushkin I, Budnikova Y. Iron complexes of BIANs: Redox trends and electrocatalysis of hydrogen evolution. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Zhou M, Li X, Bu D, Lei H. Synthesis, crystal structures and electrochemical properties of Co(II) and Mn(II) complexes with asymmetric bulky BIAN ligands. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.03.034] [Citation(s) in RCA: 9] [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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Villa M, Miesel D, Hildebrandt A, Ragaini F, Schaarschmidt D, Jacobi von Wangelin A. Synthesis and Catalysis of Redox-Active Bis(imino)acenaphthene (BIAN) Iron Complexes. ChemCatChem 2017. [DOI: 10.1002/cctc.201700144] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Matteo Villa
- Institute of Organic Chemistry; University of Regensburg; Universitaetsstr. 31 93040 Regensburg Germany
| | - Dominique Miesel
- Institute of Chemistry-Inorganic Chemistry; TU Chemnitz; 09107 Chemnitz Germany
| | | | - Fabio Ragaini
- Department of Chemistry; University of Milan; Via C. Golgi 17 20133 Milan Italy
| | - Dieter Schaarschmidt
- Institute of Organic Chemistry; University of Regensburg; Universitaetsstr. 31 93040 Regensburg Germany
- Current address: Department of Chemistry; University of Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Germany
| | - Axel Jacobi von Wangelin
- Institute of Organic Chemistry; University of Regensburg; Universitaetsstr. 31 93040 Regensburg Germany
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12
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Yu X, Zhu F, Bu D, Lei H. Ferrous complexes supported by sterically encumbered asymmetric bis(arylimino)acenaphthene (BIAN) ligands: synthesis, characterization and screening for catalytic hydrosilylation of carbonyl compounds. RSC Adv 2017. [DOI: 10.1039/c7ra01511a] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structurally characterized Fe complexes bearing asymmetric bidentate BIAN ligands were synthesized and their use as room-temperature hydrosilylation precatalyst was reported.
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Affiliation(s)
- Xun Yu
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou 510632
- China
| | - Feifeng Zhu
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou 510632
- China
| | - Donglei Bu
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou 510632
- China
| | - Hao Lei
- Department of Chemistry
- College of Chemistry and Materials Science
- Jinan University
- Guangzhou 510632
- China
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13
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Xu B, Ma A, Jia T, Hao Z, Gao W, Mu Y. Synthesis and structural characterization of iron complexes bearing N-aryl-phenanthren-o-iminoquinone ligands. Dalton Trans 2016; 45:17966-17973. [PMID: 27781236 DOI: 10.1039/c6dt03572h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatments of N-aryl-phenanthren-o-iminoquinone (aryl = 2,6-Me2C6H3 (MeL); 2,6-iPr2C6H3 (iPrL)) with iron powder in THF at 75 °C generate complexes [η2L]2Fe[η1LH] (1a, L = MeL; 1b, L = iPrL) in moderate yields. The X-ray crystallography analysis reveals that the molecule of 1b consists of a Fe(iii) center coordinated by three phenanthren-o-iminosemiquinone ligands, two of which are in an η2 fashion while the remaining one is in an η1 fashion. The analysis of the bond parameters of ligands indicates that the η2-fashioned ligands are radical anions and the η1-fashioned one is in an aminephenolato form. Reactions of MeL and iPrL with FeCl2 in THF produce Fe(iii) complexes [L]2FeCl (2a, L = MeL; 2b, L = iPrL) with the two ligands in the radical anionic form. However, similar reactions of PIQ ligands with FeCl2 in CH2Cl2 yield ion-pair complexes {[L]2FeCl}+[FeCl4]- (3a, L = MeL; 3b, L = iPrL), in which the iron center chelated by two neutral ligands can be formulated as Fe(ii). Reduction of 2b with sodium provides a salt-type complex [iPrL2-]2Fe(ii)Na2 (4), in which a high spin Fe(ii) atom is ligated by two amidophenolate ligands, and the sodium atoms attached to the oxygen atoms of ligands are η3-coordinated by the aryl ring in amido moieties.
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Affiliation(s)
- Bin Xu
- College of Chemistry, Jilin University, Changchun, China.
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14
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Liebscher M, Bruhn C, Siemeling U, Baio J, Lu H, Weidner T. The Interaction of 1,1′‐Diphosphaferrocenes with Gold: Molecular Coordination Chemistry and Adsorption on Solid Substrates. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michél Liebscher
- Institute of Chemistry University of Kassel 34109 Kassel Germany
- Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) University of Kassel 34109 Kassel Germany
| | - Clemens Bruhn
- Institute of Chemistry University of Kassel 34109 Kassel Germany
| | - Ulrich Siemeling
- Institute of Chemistry University of Kassel 34109 Kassel Germany
- Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) University of Kassel 34109 Kassel Germany
| | - Joe Baio
- School of Chemical, Biological, and Environmental Engineering Oregon State University 97331 Corvallis OR USA
| | - Hao Lu
- Max Planck Institute for Polymer Research 55128 Mainz Germany
| | - Tobias Weidner
- Max Planck Institute for Polymer Research 55128 Mainz Germany
- Department of Chemistry Aarhus University 8000 Aarhus C Denmark
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15
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Supej MJ, Volkov A, Darko L, West RA, Darmon JM, Schulz CE, Wheeler KA, Hoyt HM. Aryl-substituted BIAN complexes of iron dibromide: Synthesis, X-ray and electronic structure, and catalytic hydrosilylation activity. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.02.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Compounds of chromium, titanium, and zirconium with different reduced forms of acenaphthene-1,2-diimine. Russ Chem Bull 2015. [DOI: 10.1007/s11172-014-0523-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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