1
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Hendi Z, Pandey MK, Kushvaha SK, Roesky HW. Recent progress in transition metal complexes featuring silylene as ligands. Chem Commun (Camb) 2024. [PMID: 39119696 DOI: 10.1039/d4cc01930j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Silylenes, divalent silicon(II) compounds, once considered highly reactive and transient species, are now widely employed as stable synthons in main-group and coordination chemistry for myriad applications. The synthesis of stable silylenes represents a major breakthrough, which led to extensive exploration of silylenes in stabilizing low-valent main-group elements and as versatile ligands in coordination chemistry and catalysis. In recent years, the exploration of transition metal complexes stabilized with silylene ligands has captivated significant research attention. This is due to their robust σ-donor characteristics and capacity to stabilize transition metals in low valent states. It has also been demonstrated that the transition metal complexes of silylenes are effective catalysts for hydroboration, hydrosilylation, hydrogenation, hydrogen isotope exchange reactions, and small molecule activation chemistry. This review article focuses on the recent progress in the synthesis and catalytic application of transition metal complexes of silylenes.
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Affiliation(s)
- Zohreh Hendi
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany.
| | - Madhusudan K Pandey
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany.
| | - Saroj Kumar Kushvaha
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany.
| | - Herbert W Roesky
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Göttingen, 37077, Germany.
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2
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Karagiannis A, Neugebauer H, Lalancette RA, Grimme S, Hansen A, Prokopchuk DE. Pushing the Limits of Organometallic Redox Chemistry with an Isolable Mn(-I) Dianion. J Am Chem Soc 2024; 146:19279-19285. [PMID: 38976843 DOI: 10.1021/jacs.4c04561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
We report an incredibly reducing and redox-active Mn-I dianion, [Mn(CO)3(Ph2B(tBuNHC)2)]2- (NHC = N-heterocyclic carbene), furnished via 2e- reduction of the parent 16e- MnI complex with Na0 or K0. Cyclic voltammograms show a Mn0/-I redox couple at -3.13 V vs Fc+/0 in tetrahydrofuran (THF), -3.06 V in 1,2-dimethoxyethane, and -2.85 V in acetonitrile. The diamagnetic Mn-I dianion is stable in solution and solid-state at room temperature, tolerating a wide range of countercations ([M(2.2.2)crypt]+, [M(18-crown-6)]+, [nBu4N]+; M = Na, K). Countercation identity does not significantly alter 13C NMR spectral signatures with [nBu4N]+ and Na+, suggesting minimal ion pairing in solution. IR spectroscopy reveals a significant decrease in CO stretching frequencies from MnI to Mn-I (ca. 240 cm-1), consistent with a drastic increase in electron density at Mn. State-of-the-art DFT calculations are in excellent agreement with the observed IR spectral data. Moreover, the Mn-I dianion behaves as a chemical reductant, smoothly releasing 1e- or 2e- to regenerate the oxidized Mn0 or MnI species in solution. The reducing potential of [Mn(CO)3(Ph2B(tBuNHC)2)]2- surpasses the naphthalenide anion in THF (-3.09 V) and represents one of the strongest isolable chemical redox agents.
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Affiliation(s)
- Ageliki Karagiannis
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Hagen Neugebauer
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr 45470, Germany
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Roger A Lalancette
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Andreas Hansen
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Demyan E Prokopchuk
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
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3
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Kawabuchi Y, Suzuki T, Wada Y, Sunada Y. Reductive Retrocyclization of a Mangana(II)cyclopentasilane to Form Manganese(0) Bis(η 2-disilene) Complexes. Angew Chem Int Ed Engl 2024; 63:e202319804. [PMID: 38329155 DOI: 10.1002/anie.202319804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/07/2024] [Accepted: 02/07/2024] [Indexed: 02/09/2024]
Abstract
Ligand-exchange reactions on a mangana(II)cyclopentasilane complex that contains two THF ligands with aryl isocyanides led to the formation of manganese(0) bis(η2-disilene) complexes via a retrocyclization. In stark contrast, ligand-exchange reactions with CNtBu, an N-heterocyclic carbene, or pyridine-based ligands furnished manganese(II) complexes wherein the manganacyclopentasilane framework remained intact. The thermolysis of the obtained bis(η2-disilene) complex in the presence of mesityl isocyanide led to the formation of a cyclotetrasilane via the formal dimerization of the two η2-disilene moieties. The insertion of a mesityl isocyanide into the Mn-Siβ bond results in the formation of a manganese(II) complex supported by a [SiCSi]-type tridentate ligand scaffold.
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Affiliation(s)
- Yosuke Kawabuchi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
| | - Takuma Suzuki
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
| | - Yoshimasa Wada
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
| | - Yusuke Sunada
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan
- JST PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, Japan
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4
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Landaeta VR, Horsley Downie TM, Wolf R. Low-Valent Transition Metalate Anions in Synthesis, Small Molecule Activation, and Catalysis. Chem Rev 2024; 124:1323-1463. [PMID: 38354371 PMCID: PMC10906008 DOI: 10.1021/acs.chemrev.3c00121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 10/09/2023] [Accepted: 10/09/2023] [Indexed: 02/16/2024]
Abstract
This review surveys the synthesis and reactivity of low-oxidation state metalate anions of the d-block elements, with an emphasis on contributions reported between 2006 and 2022. Although the field has a long and rich history, the chemistry of transition metalate anions has been greatly enhanced in the last 15 years by the application of advanced concepts in complex synthesis and ligand design. In recent years, the potential of highly reactive metalate complexes in the fields of small molecule activation and homogeneous catalysis has become increasingly evident. Consequently, exciting applications in small molecule activation have been developed, including in catalytic transformations. This article intends to guide the reader through the fascinating world of low-valent transition metalates. The first part of the review describes the synthesis and reactivity of d-block metalates stabilized by an assortment of ligand frameworks, including carbonyls, isocyanides, alkenes and polyarenes, phosphines and phosphorus heterocycles, amides, and redox-active nitrogen-based ligands. Thereby, the reader will be familiarized with the impact of different ligand types on the physical and chemical properties of metalates. In addition, ion-pairing interactions and metal-metal bonding may have a dramatic influence on metalate structures and reactivities. The complex ramifications of these effects are examined in a separate section. The second part of the review is devoted to the reactivity of the metalates toward small inorganic molecules such as H2, N2, CO, CO2, P4 and related species. It is shown that the use of highly electron-rich and reactive metalates in small molecule activation translates into impressive catalytic properties in the hydrogenation of organic molecules and the reduction of N2, CO, and CO2. The results discussed in this review illustrate that the potential of transition metalate anions is increasingly being tapped for challenging catalytic processes with relevance to organic synthesis and energy conversion. Therefore, it is hoped that this review will serve as a useful resource to inspire further developments in this dynamic research field.
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Affiliation(s)
| | | | - Robert Wolf
- University of Regensburg, Institute
of Inorganic Chemistry, 93040 Regensburg, Germany
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5
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Claude G, Kulitzki E, Hagenbach A, Roca Jungfer M, Figueroa JS, Abram U. Phenylimido complexes of rhenium: fluorine substituents provide protection, reactivity, and solubility. Dalton Trans 2023; 52:4768-4778. [PMID: 36943090 DOI: 10.1039/d3dt00446e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Reactions of [Re(NPhF)Cl3(PPh3)2] ({NPhF}2- = p-fluorophenylimide) with a variety of alkyl and aryl isocyanides have been studied. Different reactivity patterns and products have been obtained depending on the steric and electronic properties of the individual ligands. This involves the formation of 1 : 1 and 1 : 2 exchange products of Re(V) with the general formulae mer-[Re(NPhF)Cl3(PPh3)(isocyanide)] and cis- or trans-[Re(NPhF)Cl3(isocyanide)2]. The stability of the obtained products is correlated with the substitution pattern of the isocyanide ligands. The products have been studied by single-crystal X-ray diffraction and spectroscopic methods, including IR and multinuclear NMR spectroscopy as well as mass spectrometry. The use of partially fluorinated starting materials and ligands allows the modulation of the solubilities of the starting materials and the products as well as the monitoring of the reactions by means of 19F NMR. The attachment of the CF3 or F substituent on the isocyanides gives control over the steric bulk and the electronic properties of the ligands and, thus, their reactivity.
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Affiliation(s)
- Guilhem Claude
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany.
| | - Erika Kulitzki
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany.
| | - Adelheid Hagenbach
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany.
| | - Maximilian Roca Jungfer
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany.
| | - Joshua S Figueroa
- University of California San Diego, La Jolla, Department of Chemistry and Biochemistry, California 92093, USA.
| | - Ulrich Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, 14195 Berlin, Germany.
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6
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Salsi F, Hagenbach A, Figueroa JS, Abram U. Na[Tc(CO)(CN p-F-Ar DArF2) 4]: an isocyanide analogue of the elusive Na[Tc(CO) 5]. Chem Commun (Camb) 2023; 59:4028-4031. [PMID: 36924117 DOI: 10.1039/d3cc00946g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
The first crystalline technetium complex in a negative oxidation state, [Tc-I(CO)(CNp-F-ArDArF2)4]-, was isolated and structurally characterized as its [Na(Crypt-2.2.2)]+ salt. It mirrors the properties of the textbook organometallic compound Na[Tc(CO)5], which has eluded isolation and structural characterization until today. [Na(Crypt-2.2.2)][Tc-I(CO)(CNp-F-ArDArF2)4] reacts expectedly as a nucleophile, which is demonstrated by reactions with HCl and ClSnMe3. They give the unprecedented monohydrido and trimethylstannyl complexes of technetium.
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Affiliation(s)
- Federico Salsi
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, Berlin D-14195, Germany.
| | - Adelheid Hagenbach
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, Berlin D-14195, Germany.
| | - Joshua S Figueroa
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC 0358, La Jolla, CA 92193, USA.
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, Berlin D-14195, Germany.
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7
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Tresp DS, Neugebauer H, Grimme S, Hansen A, Prokopchuk DE. Electronic Effects of Aminoindenyl Ligands Coordinated to Manganese: Structures and Properties of a Mn 0 Metalloradical and Bimetallic Mn –I/Mn I Adduct. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David S. Tresp
- Department of Chemistry, Rutgers University−Newark, Newark, New Jersey 07102, United States
| | - Hagen Neugebauer
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Andreas Hansen
- Mulliken Center for Theoretical Chemistry, Clausius-Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms Universität Bonn, Bonn 53115, Germany
| | - Demyan E. Prokopchuk
- Department of Chemistry, Rutgers University−Newark, Newark, New Jersey 07102, United States
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8
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Kalra S, Pividori D, Fehn D, Dai C, Dong S, Yao S, Zhu J, Meyer K, Driess M. A bis(silylene)pyridine pincer ligand can stabilize mononuclear manganese(0) complexes: facile access to isolable analogues of the elusive d 7-Mn(CO) 5 radical. Chem Sci 2022; 13:8634-8641. [PMID: 35974753 PMCID: PMC9337724 DOI: 10.1039/d2sc03352f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/05/2022] [Indexed: 11/21/2022] Open
Abstract
Using the potentially tridentate N,N′-bis(N-heterocyclic silylene)pyridine [SiNSi] pincer-type ligand, 2,6-N,N′-diethyl-bis[N,N′-di-tert-butyl(phenylamidinato)silylene] diaminopyridine, led to the first isolable bis(silylene)pyridine-stabilized manganese(0) complex, {κ3-[SiNSi]Mn(dmpe)} 4 (dmpe = (Me2P)2C2H4), which represents an isolobal 17 VE analogue of the elusive Mn(CO)5 radical. The compound is accessible through the reductive dehalogenation of the corresponding dihalido (SiNSi)Mn(ii) complexes 1 (Cl) and 2 (Br) with potassium graphite. Exposing 4 towards the stronger π-acceptor ligands CO and 2,6-dimethylphenyl isocyanide afforded the related Mn(0) complexes κ2-[SiNSi]Mn(CO)3 (5) and κ3-[SiNSi]Mn(CNXylyl)2(κ1-dmpe) (6), respectively. Remarkably, the stabilization of Mn(0) in the coordination sphere of the [SiNSi] ligand favors the d7 low-spin electronic configuration, as suggested by EPR spectroscopy, SQUID measurements and DFT calculations. The suitability of 4 acting as a superior pre-catalyst in regioselective hydroboration of quinolines has also been demonstrated. An isolable bis(silylene)pyridine stabilized manganese(0) complex {κ3-[SiNSi]Mn(dmpe)}, isolobal to elusive Mn(CO)5 radical has been synthesized and fully characterised.![]()
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Affiliation(s)
- Shweta Kalra
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Strasse des 17. Juni 135, Sekr. C2, D-10623 Berlin, Germany
| | - Daniel Pividori
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Dominik Fehn
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Chenshu Dai
- State Key Laboratory of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen, China
| | - Shicheng Dong
- State Key Laboratory of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen, China
| | - Shenglai Yao
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Strasse des 17. Juni 135, Sekr. C2, D-10623 Berlin, Germany
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surface, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, 361005 Xiamen, China
| | - Karsten Meyer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstrasse 1, 91058 Erlangen, Germany
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Strasse des 17. Juni 135, Sekr. C2, D-10623 Berlin, Germany
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9
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Karagiannis A, Tyryshkin AM, Lalancette RA, Spasyuk DM, Washington A, Prokopchuk DE. A redox-active Mn(0) dicarbene metalloradical. Chem Commun (Camb) 2022; 58:12963-12966. [DOI: 10.1039/d2cc04677f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rare redox-active Mn(0) dicarbene anion with solvent-dependent electrochemical behaviour has been synthesized and thoroughly characterized.
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Affiliation(s)
- Ageliki Karagiannis
- Department of Chemistry, Rutgers University – Newark, Newark, New Jersey 07102, USA
| | - Alexei M. Tyryshkin
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Roger A. Lalancette
- Department of Chemistry, Rutgers University – Newark, Newark, New Jersey 07102, USA
| | | | - Asmaa Washington
- Department of Chemistry, Rutgers University – Newark, Newark, New Jersey 07102, USA
| | - Demyan E. Prokopchuk
- Department of Chemistry, Rutgers University – Newark, Newark, New Jersey 07102, USA
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10
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Takebayashi S, Fayzullin RR, Bansal R. Direct observation of reversible bond homolysis by 2D EXSY NMR. Chem Sci 2022; 13:9202-9209. [PMID: 36093009 PMCID: PMC9383717 DOI: 10.1039/d2sc03028d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 07/07/2022] [Indexed: 11/21/2022] Open
Abstract
Bond homolysis is one of the most fundamental bond cleavage mechanisms. Thus, understanding of bond homolysis influences the development of a wide range of chemistry. Photolytic bond homolysis and its reverse process have been observed directly using time-resolved spectroscopy. However, direct observation of reversible bond homolysis remains elusive. Here, we report the direct observation of reversible Co–Co bond homolysis using two-dimensional nuclear magnetic resonance exchange spectroscopy (2D EXSY NMR). The characterization of species involved in this homolysis is firmly supported by diffusion ordered NMR spectroscopy (DOSY NMR). The unambiguous characterization of the Co–Co bond homolysis process enabled us to study ligand steric and electronic factors that influence the strength of the Co–Co bond. Understanding of these factors will contribute to rational design of multimetallic complexes with desired physical properties or catalytic activity. We report the first direct observation of reversible bond homolysis using EXSY NMR. This study revealed that electron donating groups weaken the Co–Co bond.![]()
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Affiliation(s)
- Satoshi Takebayashi
- Science and Technology Group Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Robert R. Fayzullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Street, Kazan 420088, Russian Federation
| | - Richa Bansal
- Science and Technology Group Okinawa Institute of Science and Technology Graduate University 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
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11
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Ruch AA, Ellison MC, Nguyen JK, Kong F, Handa S, Nesterov VN, Slaughter LM. Highly Sterically Encumbered Gold Acyclic Diaminocarbene Complexes: Overriding Electronic Control in Regiodivergent Gold Catalysis. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00776] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Aaron A. Ruch
- Department of Chemistry, University of North Texas, Denton, Texas 76203,United States
| | - Matthew C. Ellison
- Department of Chemistry, University of North Texas, Denton, Texas 76203,United States
| | - John K. Nguyen
- Department of Chemistry, University of North Texas, Denton, Texas 76203,United States
| | - Fanji Kong
- Department of Chemistry, University of North Texas, Denton, Texas 76203,United States
| | - Sachin Handa
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078,United States
| | - Vladimir N. Nesterov
- Department of Chemistry, University of North Texas, Denton, Texas 76203,United States
| | - LeGrande M. Slaughter
- Department of Chemistry, University of North Texas, Denton, Texas 76203,United States
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12
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Salsi F, Neville M, Drance M, Hagenbach A, Figueroa JS, Abram U. {M I(CO)X(CNAr DArF2) 4} (DArF = 3,5-(CF 3) 2C 6H 3; M = Re and Tc; X = Br and Cl) Complexes: Convenient Platforms for the Synthesis of Low-Valent Rhenium and Technetium Compounds. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Federico Salsi
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Michael Neville
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Myles Drance
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Adelheid Hagenbach
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Ulrich Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34/36, D-14195 Berlin, Germany
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13
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Haiduc I. Inverse coordination chemistry: oxocarbons, other polyoxo carbocyclic molecules and oxygen heterocycles as coordination centers. Topology and systematization. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1825697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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14
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Drance MJ, Wang S, Gembicky M, Rheingold AL, Figueroa JS. Probing for Four-Coordinate Zerovalent Iron in a π-Acidic Ligand Field: A Functional Source of FeL4 Enabled by Labile Dinitrogen Binding. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Myles J. Drance
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Shuai Wang
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
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15
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Salsi F, Neville M, Drance M, Hagenbach A, Chan C, Figueroa JS, Abram U. A closed-shell monomeric rhenium(1-) anion provided by m-terphenyl isocyanide ligation. Chem Commun (Camb) 2020; 56:7009-7012. [PMID: 32441735 DOI: 10.1039/d0cc03043k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mixed isocyanide/carbonyl complexes cis- and trans-[Re(CO)3Br(CNArDipp2)2] (ArDipp2 = 2,6-(2,6-(i-Pr)2C6H3)2C6H3) can be synthesized from reactions of [Re(CO)5Br] and CNArDipp2 depending on the conditions applied. Reduction of the neutral Re(i) species gives the monoanionic complex [Re(CO)3(CNArDipp2)2]- or the neutral [Re(CO)3(CNArDipp2)2], which contain rhenium in the formal oxidation states "-1" and "0", respectively.
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Affiliation(s)
- Federico Salsi
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34-36, 14195 Berlin, Germany.
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16
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Claude G, Salsi F, Hagenbach A, Gembicky M, Neville M, Chan C, Figueroa JS, Abram U. Structural and Redox Variations in Technetium Complexes Supported by m-Terphenyl Isocyanides. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00238] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Guilhem Claude
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstraße 34/36, D-14195 Berlin, Germany
| | - Federico Salsi
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstraße 34/36, D-14195 Berlin, Germany
| | - Adelheid Hagenbach
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstraße 34/36, D-14195 Berlin, Germany
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Michael Neville
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Chinglin Chan
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Ulrich Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstraße 34/36, D-14195 Berlin, Germany
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17
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Figueroa JS, Abram U. Oxidorhenium(V) and Rhenium(III) Complexes with
m
‐Terphenyl Isocyanides. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Joshua S. Figueroa
- Department of Chemistry and Biochemistry University of California San Diego 9500 Gilman Drive Mail Code 0358 92093 La Jolla CA USA
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry Freie Universität Berlin Fabeckstr. 34/36 14195 Berlin Germany
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18
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Liu Y, Cheng J, Deng L. Three-Coordinate Formal Cobalt(0), Iron(0), and Manganese(0) Complexes with Persistent Carbene and Alkene Ligation. Acc Chem Res 2020; 53:244-254. [PMID: 31880150 DOI: 10.1021/acs.accounts.9b00492] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Low-coordinate transition-metal species, i.e., metal species with coordination numbers of less than 4, represent a category of ubiquitous reactive intermediates in metal-catalyzed reactions that take place in solution, in metalloenzymes, on supported nanomaterials and single-atom catalysts, and so on. While reactive intermediates are usually transient and hard to isolate, which makes detailed investigation challenging, molecular representatives of low-coordinate transition-metal intermediates can be synthesized by the judicious use of supporting ligands, allowing detailed study of their inherent chemical and physical properties. By the use of bulky nitrogen- and oxygen-based anionic ligands, plenty of three- and two-coordinate group 4-10 metal complexes with the oxidation states of the metal centers being +3, + 2, and +1 have been prepared and subjected to extensive study. Much less known are low-coordinate zero-valent metal complexes, and knowledge about them had been restricted to group 10 metal complexes until very recently. In this Account, we summarize the studies of the synthesis, spectroscopic features, electronic structures, and reactivities of three-coordinate formal cobalt(0), iron(0), and manganese(0) complexes with persistent carbene and alkene ligation. The introduction of the π-accepting alkene ligands 1,3-divinyl-1,1,3,3-tetramethyldisiloxane (dvtms) and vinyltrimethylsilane (vtms) into the reduction reactions of MCl2 (M = Co, Fe, Mn) with persistent carbenes and alkaline metals effectively suppresses ligand C-H bond activation reactions, leading to the successful preparation of three-coordinate formal cobalt(0), iron(0), and manganese(0) complexes LM(η2:η2-dvtms), LM(η2-vtms)2, and L2M(η2-vtms) (M = Co, Fe, Mn; L = N-heterocyclic carbene (NHC), cyclic (alkyl)(amino)carbene (cAAC)). These three-coordinate metal complexes feature pronounced back-donation from the filled metal 3d orbitals to the alkene π* orbital(s), resulting in electronic configurations of (dxy+πalkene*)2(dx2-y2+π'alkene*)2(dz2,dxz,dyz)n (the coordination plane was chosen as the xy plane; n = 5, 4, and 3 for Co, Fe, and Mn, respectively) for the bis(alkene) complexes LM(η2:η2-dvtms) and LM(η2-vtms)2. The alkene ligands in the low-coordinate formal zero-valent metal complexes are amenable to undergo ligand-exchange reactions with better π-accepting ligands. In reactions with organic azides, hydrosilanes, nitrosoarenes, alkynes, etc., the alkene ligands dissociate from the metal coordination sphere, and three-coordinate formal zero-valent metal complexes function as synthons of LnM0 (L = NHC, cAAC; n = 1, 2; M = Co, Fe, Mn) to perform redox reactions with these substrates, affording divalent and tetravalent cobalt, iron, or manganese complexes. These electronic structure and reactivity features hint at the potential of low-coordinate zero-valent group 7-9 metal complexes for the development of new 3d metal catalysts and magnetic materials.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Jun Cheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
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19
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Schwamm RJ, Coles MP. Distibanes and Distibenes from Reduction of Sb(NON R )Cl by using Mg I Reagents. Chemistry 2019; 25:14183-14191. [PMID: 31452283 DOI: 10.1002/chem.201903175] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 08/18/2019] [Indexed: 11/06/2022]
Abstract
The bis(amidodimethyl)disiloxane antimony chlorides Sb(NONR )Cl (NONR =[O(SiMe2 NR)2 ]2- ; R=tBu, Ph, 2,6-Me2 C6 H3 =Dmp, 2,6-iPr2 C6 H3 =Dipp, 2,6-(CHPh2 )2 -4-tBuC6 H2 =tBu-Bhp) are reduced to SbII and SbI species by using MgI reagents, [Mg(BDIR' )]2 (BDI=[HC{C(Me)NR'}2 ]- ; R'=2,4,6-Me3 C6 H2 =Mes, Dipp). Stoichiometric reactions with Sb(NONR )Cl (R=tBu, Ph) form dimeric SbII stibanes [Sb(NONR )]2 , shown crystallographically to contain Sb-Sb single bonds. The analogous distibane with R=Dmp substituents has an exceptionally long Sb-Sb interaction and exhibits spectroscopic and reactivity properties consistent with radical character in solution. When R=Dipp, reductions with MgI reagents directly give distibenes [Sb(μ-NONDipp )Mg(BDIR' )(THF)n ]2 (R'=Mes, n=1; R'=Dipp, n=0). Crystallographic analysis shows a trans-substitution of the Sb=Sb double bond, with bridging NONDipp -ligands between the SbI and MgII centres. An attempt to access the NONPh -analogue using the same protocol afforded the polystibide cluster Sb8 [μ4 ,η2:2:2:2 -Mg(BDIMes )]4 , which co-crystallized with the ligand transfer product, [Mg(BDIMes )]2 (μ-NONPh ).
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Affiliation(s)
- Ryan J Schwamm
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, 6012, New Zealand
| | - Martyn P Coles
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, 6012, New Zealand
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20
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Mokhtarzadeh CC, Chan C, Moore CE, Rheingold AL, Figueroa JS. Side-On Coordination of Nitrous Oxide to a Mononuclear Cobalt Center. J Am Chem Soc 2019; 141:15003-15007. [PMID: 31492053 DOI: 10.1021/jacs.9b08241] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Despite its utility as an oxygen-atom transfer reagent for transition metals, nitrous oxide (N2O) is a notoriously poor ligand, and its coordination chemistry has been limited to a few terminal, end-on κ1-N complexes. Here, the synthesis of a mononuclear cobalt complex possessing a side-on-bound N2O molecule is reported. Structural characterization, IR spectroscopy, and DFT calculations support an η2-N,N binding mode for binding of N2O to the cobalt center.
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Affiliation(s)
- Charles C Mokhtarzadeh
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive, Mail Code 0358 , La Jolla , California 92093-0358 , United States
| | - Chinglin Chan
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive, Mail Code 0358 , La Jolla , California 92093-0358 , United States
| | - Curtis E Moore
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive, Mail Code 0358 , La Jolla , California 92093-0358 , United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive, Mail Code 0358 , La Jolla , California 92093-0358 , United States
| | - Joshua S Figueroa
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive, Mail Code 0358 , La Jolla , California 92093-0358 , United States
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21
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Kadassery KJ, MacMillan SN, Lacy DC. Resurgence of Organomanganese(I) Chemistry. Bidentate Manganese(I) Phosphine–Phenol(ate) Complexes. Inorg Chem 2019; 58:10527-10535. [DOI: 10.1021/acs.inorgchem.9b00941] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Karthika J. Kadassery
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - David C. Lacy
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
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22
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Wang D, Leng X, Ye S, Deng L. Substrate Redox Non-innocence Inducing Stepwise Oxidative Addition Reaction: Nitrosoarene C-N Bond Cleavage on Low-Coordinate Cobalt(0) Species. J Am Chem Soc 2019; 141:7731-7735. [PMID: 31042868 DOI: 10.1021/jacs.9b03726] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reactions of nitrosoarenes with transition-metal species are fundamentally important for their relevance to metal-catalyzed transformations of organo-nitrogen compounds in organic synthesis and also the metabolization of nitroarenes and anilines in biology. In addition to the well-known reactivity of metal-mediated N-O bond activation and cleavage of nitrosoarenes, we present herein the first observation of a nitrosoarene C-N bond oxidative addition reaction upon the interaction of a three-coordinate cobalt(0) species [(IPr)Co(vtms)2] with 2,4,6-tri( tert-butyl)-1-nitroso-benzene (Ar*NO). The reaction produces a cobalt nitrosyl aryl complex, [(IPr)Co(Ar*)(NO)] (1), with a bis(nitrosoarene)cobalt complex, [(IPr)Co(η2-ONAr)(κ1- O-ONAr)] (2), as an intermediate. Spectroscopic characterizations, DFT calculations, and kinetic studies revealed that the redox non-innocence of nitrosoarene induces a stepwise pathway for the C-N bond oxidative addition reaction.
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Affiliation(s)
- Dongyang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China
| | - Xuebing Leng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China
| | - Shengfa Ye
- Max-Planck-Institut für Kohlenforschung , Kaiser-Wilhelm-Platz 1 , Mülheim an der Ruhr D-45470 , Germany
| | - Liang Deng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China
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23
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Narro AL, Arman HD, Tonzetich ZJ. Manganese Chemistry of Anionic Pyrrole-Based Pincer Ligands. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00058] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana L. Narro
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
| | - Hadi D. Arman
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
| | - Zachary J. Tonzetich
- Department of Chemistry, University of Texas at San Antonio (UTSA), San Antonio, Texas 78249, United States
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24
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Chan C, Carpenter AE, Gembicky M, Moore CE, Rheingold AL, Figueroa JS. Associative Ligand Exchange and Substrate Activation Reactions by a Zero-Valent Cobalt Tetraisocyanide Complex. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00777] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chinglin Chan
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Alex E. Carpenter
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
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25
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Cheng J, Chen Q, Leng X, Ouyang Z, Wang Z, Ye S, Deng L. The Stabilization of Three-Coordinate Formal Mn(0) Complex with NHC and Alkene Ligation. Chem 2018. [DOI: 10.1016/j.chempr.2018.09.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Drance MJ, Figueroa JS. Low-Coordinate Manganese Complexes Perform Unusual Bond-Formation Reactions. Chem 2018. [DOI: 10.1016/j.chempr.2018.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Barnett BR, Figueroa JS. Zero-valent isocyanides of nickel, palladium and platinum as transition metal σ-type Lewis bases. Chem Commun (Camb) 2018; 52:13829-13839. [PMID: 27826607 DOI: 10.1039/c6cc07863j] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Transition metal complexes that contain metal-to-ligand retrodative σ-bonds have become the subject of increasing studies over the last decade. Lewis acidic "Z-type ligands" can modulate the electronic structure of their resultant complexes in a manner distinct from 2e- donor ligands, and can also engage in cooperative reactivity with a Lewis basic transition metal. In this Feature article, we summarize our work with transition metal isocyanide complexes of group 10 metals that have exploited metal-based σ-type Lewis basicity. While the complexes Ni(CNArMes2)3, Pd(CNArDipp2)2 and Pt(CNArDipp2)2 were initially targeted as analogues to unstable, low-coordinate metal carbonyls, it soon became apparent that these zero-valent metal centers bore appreciable Lewis basic qualities due largely to the enhanced σ-donor/π-acid ratio of isocyanides compared to CO. Detailed spectroscopic and structural studies of metal-only Lewis pairs (MOLPs) formed from these complexes have furthered our understanding of the electronic structure perturbations effected by Z-type ligand binding. In addition, the platinum (boryl)iminomethane (BIM) complex Pt(κ2-N,B-Cy2BIM)(CNArDipp2) has illuminated a general ligand design strategy that can engender significant reverse-dative interactions with buttressed Lewis acids, and also has expanded the known scope of cooperative reactivity that can be realized at a transition metal-borane linkage.
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Affiliation(s)
- Brandon R Barnett
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, California 92093, USA.
| | - Joshua S Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive MC 0358, La Jolla, California 92093, USA.
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28
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Agnew DW, DiMucci IM, Arroyave A, Gembicky M, Moore CE, MacMillan SN, Rheingold AL, Lancaster KM, Figueroa JS. Crystalline Coordination Networks of Zero-Valent Metal Centers: Formation of a 3-Dimensional Ni(0) Framework with m-Terphenyl Diisocyanides. J Am Chem Soc 2017; 139:17257-17260. [PMID: 29131949 DOI: 10.1021/jacs.7b09569] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A permanently porous, three-dimensional metal-organic material formed from zero-valent metal nodes is presented. Combination of ditopic m-terphenyl diisocyanide, [CNArMes2]2, and the d10 Ni(0) precursor Ni(COD)2, produces a porous metal-organic material featuring tetrahedral [Ni(CNArMes2)4]n structural sites. X-ray absorption spectroscopy provides firm evidence for the presence of Ni(0) centers, whereas gas-sorption and thermogravimetric analysis reveal the characteristics of a robust network with a microdomain N2-adsorption profile.
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Affiliation(s)
- Douglas W Agnew
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
| | - Ida M DiMucci
- Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853, United States
| | - Alejandra Arroyave
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
| | - Samantha N MacMillan
- Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853, United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
| | - Kyle M Lancaster
- Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853, United States
| | - Joshua S Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
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29
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Barnett BR, Labios LA, Stauber JM, Moore CE, Rheingold AL, Figueroa JS. Synthetic and Mechanistic Interrogation of Pd/Isocyanide-Catalyzed Cross-Coupling: π-Acidic Ligands Enable Self-Aggregating Monoligated Pd(0) Intermediates. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00035] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Brandon R. Barnett
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Liezel A. Labios
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Julia M. Stauber
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Curtis E. Moore
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Arnold L. Rheingold
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Joshua S. Figueroa
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
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30
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Agnew DW, Moore CE, Rheingold AL, Figueroa JS. Comparison of nucleophilic- and radical-based routes to the formation of manganese-main group element single bonds. Dalton Trans 2017; 46:6700-6707. [DOI: 10.1039/c7dt01102d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
One-electron activation of main-group substrates by a stable manganese metalloradical provides a facile pathway to Mn-element single bonds.
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Affiliation(s)
- Douglas W. Agnew
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
| | | | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry
- University of California
- La Jolla
- USA
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31
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Agnew DW, Moore CE, Rheingold AL, Figueroa JS. Controlled cis Labilization of CO from Manganese(I) Mixed Carbonyl/Isocyanide Complexes: An Entry Point to Coordinatively Unsaturated Metallo-Lewis Acids. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00792] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Douglas W. Agnew
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Curtis E. Moore
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
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32
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Agnew DW, Sampson MD, Moore CE, Rheingold AL, Kubiak CP, Figueroa JS. Electrochemical Properties and CO 2-Reduction Ability of m-Terphenyl Isocyanide Supported Manganese Tricarbonyl Complexes. Inorg Chem 2016; 55:12400-12408. [PMID: 27934438 DOI: 10.1021/acs.inorgchem.6b02299] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To circumvent complications with redox-active ligands commonly encountered in the study of manganese electrocatalysts for CO2 reduction, we have studied the electrochemistry of the manganese mixed carbonyl/isocyanide complexes XMn(CO)3(CNArDipp2)2 (X = counteranion), to evaluate the pairing effects of the counteranion and their influence over the potential necessary for metal-based reduction. The complexes described herein have been shown to act as functional analogues to the known homoleptic carbonyl manganese complexes [Mn(CO)5]n (n = 1-, 0, 1+). The m-terphenyl isocyanide ligand CNArDipp2 improves the kinetic stability of the resulting mixed carbonyl/isocyanide systems, such that conversion among all three oxidation states is easily effected by chemical reagents. Here, we have utilized an electrochemical study to fully understand the redox chemistry of this system and its ability to facilitate CO2 reduction and to provide comparison to known manganese-based CO2 electrocatalysts. Two complexes, BrMn(CO)3(CNArDipp2)2 and [Mn(THF)(CO)3(CNArDipp2)2]OTf, have been studied using infrared spectroelectrochemistry (IR-SEC) to spectroscopically characterize the redox states of these complexes during the course of electrochemical reactions. A striking difference in the necessary potential leading to the first one-electron reduction has been found for the halide and triflate species, respectively. Complete selectivity for the formation of CO and CO32- is observed in the reactivity of [Mn(CO)3(CNArDipp2)2]- with CO2, which is deduced via the trapping and incorporation of liberated CO into the zerovalent species Mn(CO)3(CNArDipp2)2 to form the dimers Mn2(CO)7(CNArDipp2)3 and Mn2(CO)8(CNArDipp2)2.
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Affiliation(s)
- Douglas W Agnew
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Matthew D Sampson
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Clifford P Kubiak
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Joshua S Figueroa
- Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, Mail Code 0358, La Jolla, California 92093, United States
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33
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Agnew DW, Gembicky M, Moore CE, Rheingold AL, Figueroa JS. Robust, Transformable, and Crystalline Single-Node Organometallic Networks Constructed from Ditopic m-Terphenyl Isocyanides. J Am Chem Soc 2016; 138:15138-15141. [DOI: 10.1021/jacs.6b10460] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Douglas W. Agnew
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Milan Gembicky
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Curtis E. Moore
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Arnold L. Rheingold
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093, United States
| | - Joshua S. Figueroa
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093, United States
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34
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Schwamm RJ, Lein M, Coles MP, Fitchett CM. Bi−P Bond Homolysis as a Route to Reduced Bismuth Compounds and Reversible Activation of P4. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608615] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ryan J. Schwamm
- School of Chemical and Physical Sciences; Victoria University of Wellington; Wellington 6012 New Zealand
| | - Matthias Lein
- School of Chemical and Physical Sciences; Victoria University of Wellington; Wellington 6012 New Zealand
| | - Martyn P. Coles
- School of Chemical and Physical Sciences; Victoria University of Wellington; Wellington 6012 New Zealand
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35
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Schwamm RJ, Lein M, Coles MP, Fitchett CM. Bi−P Bond Homolysis as a Route to Reduced Bismuth Compounds and Reversible Activation of P
4. Angew Chem Int Ed Engl 2016; 55:14798-14801. [DOI: 10.1002/anie.201608615] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Ryan J. Schwamm
- School of Chemical and Physical Sciences Victoria University of Wellington Wellington 6012 New Zealand
| | - Matthias Lein
- School of Chemical and Physical Sciences Victoria University of Wellington Wellington 6012 New Zealand
| | - Martyn P. Coles
- School of Chemical and Physical Sciences Victoria University of Wellington Wellington 6012 New Zealand
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36
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Pelties S, Maier T, Herrmann D, de Bruin B, Rebreyend C, Gärtner S, Shenderovich IG, Wolf R. Selective P4
Activation by a Highly Reduced Cobaltate: Synthesis of Dicobalt Tetraphosphido Complexes. Chemistry 2016; 23:6094-6102. [DOI: 10.1002/chem.201603296] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Stefan Pelties
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Thomas Maier
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Dirk Herrmann
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Bas de Bruin
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 9747 AG Groningen Netherlands
| | - Christophe Rebreyend
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 9747 AG Groningen Netherlands
| | - Stefanie Gärtner
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Ilya G. Shenderovich
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Robert Wolf
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
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37
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Carpenter AE, Rheingold AL, Figueroa JS. A Well-Defined Isocyano Analogue of HCo(CO)4. 1: Synthesis, Decomposition, and Catalytic 1,1-Hydrogenation of Isocyanides. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00297] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alex E. Carpenter
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Arnold L. Rheingold
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
| | - Joshua S. Figueroa
- Department of Chemistry and
Biochemistry, University of California, San Diego, 9500 Gilman
Drive, Mail Code 0358, La Jolla, California 92093-0358, United States
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38
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Pelties S, Ehlers AW, Wolf R. Insertion of phenyl isothiocyanate into a P-P bond of a nickel-substituted bicyclo[1.1.0]tetraphosphabutane. Chem Commun (Camb) 2016; 52:6601-4. [PMID: 27111495 DOI: 10.1039/c6cc01572g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new reaction mode for bicyclo[1.1.0]tetraphosphabutanes is reported. The C[double bond, length as m-dash]S and C[double bond, length as m-dash]N bonds of phenyl isothiocyanate reversibly insert into a P-P bond of [{CpNi(IMes)}2(μ-η(1):η(1)-P4)] (, IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene), forming isomers and . X-ray crystallography and (31)P{(1)H} NMR spectroscopy revealed similar bicyclo[3.1.0]heterohexane structures for these compounds.
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Affiliation(s)
- Stefan Pelties
- University of Regensburg, Institute of Inorganic Chemistry, 93040 Regensburg, Germany.
| | - Andreas W Ehlers
- Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Robert Wolf
- University of Regensburg, Institute of Inorganic Chemistry, 93040 Regensburg, Germany.
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39
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Asandei AD. Photomediated Controlled Radical Polymerization and Block Copolymerization of Vinylidene Fluoride. Chem Rev 2016; 116:2244-74. [PMID: 26760676 DOI: 10.1021/acs.chemrev.5b00539] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This review summarizes recent research on novel photochemical methods for the initiation and control of the polymerization of main chain fluorinated monomers as exemplified by vinylidene fluoride (VDF) and for the synthesis of their block copolymers. Such reactions can be carried out at ambient temperature in glass tubes using visible light. Novel, original protocols include the use of hypervalent iodide carboxylates alone or in conjunction with molecular iodine, as well as the use of photoactive transition metal carbonyls in the presence of alkyl, fluoroalkyl, and perfluoroalkyl halides. An in-depth study of the reaction parameters highlights the use of dimethyl carbonate as a preferred polymerization solvent and outlines the structure-property relationship for hypervalent iodide carboxylates and halide initiators in both the free radical and iodine degenerative transfer controlled radical polymerization (IDT-CRP) of VDF. Finally, the rational selection of metal carbonyls that are successful not only as IDT mediators but, more importantly, in the quantitative activation of both PVDF-CH2-CF2-I and PVDF-CF2-CH2-I chain ends toward the synthesis of well-defined PVDF block copolymers is presented.
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Affiliation(s)
- Alexandru D Asandei
- Institute of Materials Science and Department of Chemistry University of Connecticut , 97 North Eagleville Road, Storrs, Connecticut 06269-3139, United States
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40
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Sunada Y, Ishida S, Hirakawa F, Shiota Y, Yoshizawa K, Kanegawa S, Sato O, Nagashima H, Iwamoto T. Persistent four-coordinate iron-centered radical stabilized by π-donation. Chem Sci 2016; 7:191-198. [PMID: 28758000 PMCID: PMC5515065 DOI: 10.1039/c5sc02601f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Accepted: 09/25/2015] [Indexed: 11/21/2022] Open
Abstract
Dinuclear iron carbonyl complex 2, which contains an elongated unsupported Fe-Fe bond, was synthesized by the reaction between Fe2(CO)9 and phosphinyl radical 1. Thermal Fe-Fe bond homolysis led to the generation of a four-coordinate carbonyl-based iron-centered radical, 3, which is stabilized by π-donation. Complex 3 exhibited high reactivity toward organic radicals to form diamagnetic five-coordinate Fe(ii) complexes.
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Affiliation(s)
- Yusuke Sunada
- Institute for Materials Chemistry and Engineering , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan
| | - Shintaro Ishida
- Department of Chemistry , Graduate School of Science , Tohoku University , Aoba-ku , Sendai 980-8578 , Japan
| | - Fumiya Hirakawa
- Department of Chemistry , Graduate School of Science , Tohoku University , Aoba-ku , Sendai 980-8578 , Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering , Kyushu University , Nishi-ku , Fukuoka 819-0395 , Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering , Kyushu University , Nishi-ku , Fukuoka 819-0395 , Japan
| | - Shinji Kanegawa
- Institute for Materials Chemistry and Engineering , Kyushu University , Nishi-ku , Fukuoka 819-0395 , Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering , Kyushu University , Nishi-ku , Fukuoka 819-0395 , Japan
| | - Hideo Nagashima
- Institute for Materials Chemistry and Engineering , Kyushu University , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan.,CREST , Japan Science and Technology Agency (JST) , 6-1 Kasugakoen , Kasuga , Fukuoka 816-8580 , Japan
| | - Takeaki Iwamoto
- Department of Chemistry , Graduate School of Science , Tohoku University , Aoba-ku , Sendai 980-8578 , Japan
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41
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Mokhtarzadeh CC, Rheingold AL, Figueroa JS. Dinitrogen binding, P4-activation and aza-Büchner ring expansions mediated by an isocyano analogue of the CpCo(CO) fragment. Dalton Trans 2016; 45:14561-9. [DOI: 10.1039/c6dt02789j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Synthetic studies targeting an m-terphenyl isocyanide analogue of the unstable 16e−, S = 1 complex CpCo(CO) are reported (Cp = η5-C5H5).
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Affiliation(s)
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry
- University of California
- San Diego
- La Jolla
- USA
| | - Joshua S. Figueroa
- Department of Chemistry and Biochemistry
- University of California
- San Diego
- La Jolla
- USA
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