1
|
Gonzalez AG, Gonzalez F, De Leon E, Birkhoff KM, Yruegas S, Chen H, Shoshani MM. Synthesis and characterization of NiAl-hydride heterometallics: perturbing electron density within Al-H-Ni subunits. Dalton Trans 2024. [PMID: 39189397 DOI: 10.1039/d4dt01786b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Heterometallic hydride complexes are of growing interest due to their potential to contribute to highly active insertion-based catalysis; however, methods to modulate electron density within this class of molecules are underexplored. Addition of ancillary ligands to heterotrimetallic NiAl2H2 species (1) results in the formation of heterobimetallic NiAl-hydride complexes with varying phosphine donors (2-(L)2). Incorporation of sigma donating ancillary ligands of increasing strength led to contractions of the Ni-Al distances correlated to a strengthening of a back donation interaction to the Al-H sigma antibonding orbital, most prominently present in 2-(PMe3)2. Demethylation of the aryl ether from 2-(PMe3)2 provides access to a novel anionic nickel-aluminum complex (3) with a maintained bridged hydride moiety between Ni and Al. Increased negative charge in complex 3 results in an elongation of the Ni-Al interaction. Combined crystallographic, spectroscopic, and computational studies support a 3-center interaction within the Al-H-Ni subunits and were used to map the degree of Ni-H character of the series within the Al-H-Ni bonding continuum.
Collapse
Affiliation(s)
- Aleida G Gonzalez
- School of Integrated Biological and Chemical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, 78520, USA
| | - Fernando Gonzalez
- School of Integrated Biological and Chemical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, 78520, USA
| | - Edgardo De Leon
- School of Integrated Biological and Chemical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, 78520, USA
| | | | - Sam Yruegas
- Department of Chemistry, Rice University, Houston, Texas, 77005, USA
| | - Haoyuan Chen
- Department of Physics and Astronomy, University of Texas Rio Grande Valley, Edinburg, Texas, 78539, USA
- Department of Chemistry, Southern Methodist University, Dallas, Texas, 75275, USA.
| | - Manar M Shoshani
- School of Integrated Biological and Chemical Sciences, University of Texas Rio Grande Valley, Brownsville, Texas, 78520, USA
- Department of Chemistry, University of Kansas, Lawrence, Kansas, 66045, USA.
| |
Collapse
|
2
|
Sansores-Paredes MLG, Lutz M, Moret ME. Cooperative H 2 activation at a nickel(0)-olefin centre. Nat Chem 2024; 16:417-425. [PMID: 38052947 DOI: 10.1038/s41557-023-01380-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 10/23/2023] [Indexed: 12/07/2023]
Abstract
Catalytic olefin hydrogenation is ubiquitous in organic synthesis. In most proposed homogeneous catalytic cycles, reactive M-H bonds are generated either by oxidative addition of H2 to a metal centre or by deprotonation of a non-classical metal dihydrogen (M-H2) intermediate. Here we provide evidence for an alternative H2-activation mechanism that instead involves direct ligand-to-ligand hydrogen transfer (LLHT) from a metal-bound H2 molecule to a metal-coordinated olefin. An unusual pincer ligand that features two phosphine ligands and a central olefin supports the formation of a non-classical Ni-H2 complex and the Ni(alkyl)(hydrido) product of LLHT, in rapid equilibrium with dissolved H2. The usefulness of this cooperative H2-activation mechanism for catalysis is demonstrated in the semihydrogenation of diphenylacetylene. Experimental and computational mechanistic investigations support the central role of LLHT for H2 activation and catalytic semihydrogenation. The product distribution obtained is largely determined by the competition between (E)-(Z) isomerization and catalyst degradation by self-hydrogenation.
Collapse
Affiliation(s)
- María L G Sansores-Paredes
- Organic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, Utrecht, the Netherlands
| | - Martin Lutz
- Structural Biochemistry, Bijvoet Centre for Biomolecular Research, Faculty of Science, Utrecht University, Utrecht, the Netherlands
| | - Marc-Etienne Moret
- Organic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, Utrecht, the Netherlands.
| |
Collapse
|
3
|
Palermo AP, Zhang S, Okrut A, Schöttle C, Grosso-Giordano NA, Runnebaum RC, Edwards KC, Guan E, Ertler D, Solovyov A, Kistler JD, Aydin C, Lu J, Busygin I, Dixon DA, Gates BC, Katz A. Remotely Bonded Bridging Dioxygen Ligands Enhance Hydrogen Transfer in a Silica-Supported Tetrairidium Cluster Catalyst. J Am Chem Soc 2024; 146:3773-3784. [PMID: 38301281 DOI: 10.1021/jacs.3c10660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
A longstanding challenge in catalysis by noble metals has been to understand the origin of enhancements of rates of hydrogen transfer that result from the bonding of oxygen near metal sites. We investigated structurally well-defined catalysts consisting of supported tetrairidium carbonyl clusters with single-atom (apical iridium) catalytic sites for ethylene hydrogenation. Reaction of the clusters with ethylene and H2 followed by O2 led to the onset of catalytic activity as a terminal CO ligand at each apical Ir atom was removed and bridging dioxygen ligands replaced CO ligands at neighboring (basal-plane) sites. The presence of the dioxygen ligands caused a 6-fold increase in the catalytic reaction rate, which is explained by the electron-withdrawing capability induced by the bridging dioxygen ligands, consistent with the inference that reductive elimination is rate-determining. Electronic-structure calculations demonstrate an additional role of the dioxygen ligands, changing the mechanism of hydrogen transfer from one involving equatorial hydride ligands to that involving bridging hydride ligands. This mechanism is made evident by an inverse kinetic isotope effect observed in ethylene hydrogenation reactions with H2 and, alternatively, with D2 on the cluster incorporating the dioxygen ligands and is a consequence of quasi-equilibrated hydrogen transfer in this catalyst. The same mechanism accounts for rate enhancements induced by the bridging dioxygen ligands for the catalytic reaction of H2 with D2 to give HD. We posit that the mechanism involving bridging hydride ligands facilitated by oxygen ligands remote from the catalytic site may have some generality in catalysis by oxide-supported noble metals.
Collapse
Affiliation(s)
- Andrew P Palermo
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Shengjie Zhang
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Alexander Okrut
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Christian Schöttle
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Nicolás A Grosso-Giordano
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Ron C Runnebaum
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Kyle C Edwards
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Erjia Guan
- Department of Materials Science and Engineering, University of California, Davis, California 95616, United States
| | - Daniel Ertler
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Andrew Solovyov
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Joseph D Kistler
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Ceren Aydin
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Jing Lu
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Igor Busygin
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - David A Dixon
- Department of Chemistry & Biochemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Bruce C Gates
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Alexander Katz
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| |
Collapse
|
4
|
Kalkuhl TL, Qin L, Zhao L, Frenking G, Hadlington TJ. On the σ-complex character of bis(gallyl)/digallane transition metal species. Chem Sci 2023; 14:11088-11095. [PMID: 37860650 PMCID: PMC10583741 DOI: 10.1039/d3sc03772j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/21/2023] [Indexed: 10/21/2023] Open
Abstract
σ-complexes of homoatomic E-E bonds are key intermediates in catalytically relevant oxidative addition reactions, but are as yet unknown for the group 13 elements. Here, stable species best described as σ-complexes of a 1,2-dichlorodigallane derivative with Ni and Pd are reported. They are readily accessed through the combination of a 1,2-dichlorodigallane derivative, which features chelating phosphine functionalities, with Ni0 and Pd0 synthons. In-depth computational analyses of these complexes importantly reveal considerable Ga-Ga bonding interactions in both Ni and Pd complexes, despite the expected elongation of the Ga-Ga bond upon complexation, suggestive of σ-complex character as opposed to more commonly described bis(gallyl) character. Finally, the well-defined disproportion of the Ni complex is described, leading to a unique GaI-nickel complex, with concomitant expulsion of uncomplexed GaIII species.
Collapse
Affiliation(s)
- Till L Kalkuhl
- Fakultät für Chemie, Technische Universität München Lichtenberg Strasse 4 85747 Garching Germany
| | - Lei Qin
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing China
| | - Lili Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing China
| | - Gernot Frenking
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing China
- Fachbereich Chemie, Philipps-Universität Marburg Hans-Meerwein-Strasse D-35043 Marburg Germany
| | - Terrance J Hadlington
- Fakultät für Chemie, Technische Universität München Lichtenberg Strasse 4 85747 Garching Germany
| |
Collapse
|
5
|
Chen Y, Xia G, Jin C, Wang Y, Yan Y, Chen Y, Gong X, Lai Y, Wu C. Palladium-Phosphide-Modified Three-Dimensional Phospho-Doped Graphene Materials for Hydrogen Storage. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4219. [PMID: 37374404 DOI: 10.3390/ma16124219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023]
Abstract
The development of efficient hydrogen storage materials is crucial for advancing hydrogen-based energy systems. In this study, we prepared a highly innovative palladium-phosphide-modified P-doped graphene hydrogen storage material with a three-dimensional configuration (3D Pd3P0.95/P-rGO) using a hydrothermal method followed by calcination. This 3D network hindering the stacking of graphene sheets provided channels for hydrogen diffusion to improve the hydrogen adsorption kinetics. Importantly, the construction of the three-dimensional palladium-phosphide-modified P-doped graphene hydrogen storage material improved the hydrogen absorption kinetics and mass transfer process. Furthermore, while acknowledging the limitations of primitive graphene as a medium in hydrogen storage, this study addressed the need for improved graphene-based materials and highlighted the significance of our research in exploring three-dimensional configurations. The hydrogen absorption rate of the material increased obviously in the first 2 h compared with two-dimensional sheets of Pd3P/P-rGO. Meanwhile, the corresponding 3D Pd3P0.95/P-rGO-500 sample, which was calcinated at 500 °C, achieved the optimal hydrogen storage capacity of 3.79 wt% at 298 K/4 MPa. According to molecular dynamics, the structure was thermodynamically stable, and the calculated adsorption energy of a single H2 molecule was -0.59 eV/H2, which was in the ideal range of hydrogen ad/desorption. These findings pave the way for the development of efficient hydrogen storage systems and advance the progress of hydrogen-based energy technologies.
Collapse
Affiliation(s)
- Yiwen Chen
- State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Deyang 618000, China
- Dongfang Electric Corporation Dongfang Turbine Co., Ltd., Deyang 618000, China
| | - Guanghui Xia
- College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
| | - Chaonan Jin
- College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
| | - Yao Wang
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610064, China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China
| | - Yigang Yan
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610064, China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China
- Technology Innovation Center of Hydrogen Storage-Transportation and Fueling Equipments for State Market Regulation, Chengdu 610100, China
| | - Yungui Chen
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610064, China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China
- Technology Innovation Center of Hydrogen Storage-Transportation and Fueling Equipments for State Market Regulation, Chengdu 610100, China
| | - Xiufang Gong
- State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Deyang 618000, China
- Dongfang Electric Corporation Dongfang Turbine Co., Ltd., Deyang 618000, China
| | - Yuqiu Lai
- State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Deyang 618000, China
- Dongfang Electric Corporation Dongfang Turbine Co., Ltd., Deyang 618000, China
| | - Chaoling Wu
- College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610064, China
- Technology Innovation Center of Hydrogen Storage-Transportation and Fueling Equipments for State Market Regulation, Chengdu 610100, China
| |
Collapse
|
6
|
Fielicke A. Probing the binding and activation of small molecules by gas-phase transition metal clusters via IR spectroscopy. Chem Soc Rev 2023. [PMID: 37162518 DOI: 10.1039/d2cs00104g] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Isolated transition metal clusters have been established as useful models for extended metal surfaces or deposited metal particles, to improve the understanding of their surface chemistry and of catalytic reactions. For this objective, an important milestone has been the development of experimental methods for the size-specific structural characterization of clusters and cluster complexes in the gas phase. This review focusses on the characterization of molecular ligands, their binding and activation by small transition metal clusters, using cluster-size specific infrared action spectroscopy. A comprehensive overview and a critical discussion of the experimental data available to date is provided, reaching from the initial results obtained using line-tuneable CO2 lasers to present-day studies applying infrared free electron lasers as well as other intense and broadly tuneable IR laser sources.
Collapse
Affiliation(s)
- André Fielicke
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany.
- Institut für Optik und Atomare Physik, Technische Universität Berlin, 10623 Berlin, Germany
| |
Collapse
|
7
|
Fickenscher ZBG, Lönnecke P, Müller AK, Hollóczki O, Kirchner B, Hey-Hawkins E. Synergistic Catalysis in Heterobimetallic Complexes for Homogeneous Carbon Dioxide Hydrogenation. Molecules 2023; 28:molecules28062574. [PMID: 36985546 PMCID: PMC10059594 DOI: 10.3390/molecules28062574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/15/2023] Open
Abstract
Two heterobimetallic Mo,M’ complexes (M’ = IrIII, RhIII) were synthesized and fully characterized. Their catalytic activity in homogeneous carbon dioxide hydrogenation to formate was studied. A pronounced synergistic effect between the two metals was found, most notably between Mo and Ir, leading to a fourfold increase in activity compared with a binary mixture of the two monometallic counterparts. This synergism can be attributed to spatial proximity of the two metals rather than electronic interactions. To further understand the nature of this interaction, the mechanism of the CO2 hydrogenation to formate by a monometallic IrIII catalyst was studied using computational and spectroscopic methods. The resting state of the reaction was found to be the metal-base adduct, whereas the rate-determining step is the inner-sphere hydride transfer to CO2. Based on these findings, the synergism in the heterobimetallic complex is beneficial in this key step, most likely by further activating the CO2.
Collapse
Affiliation(s)
- Zeno B. G. Fickenscher
- Institute of Inorganic Chemistry, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Peter Lönnecke
- Institute of Inorganic Chemistry, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Anna K. Müller
- Mulliken Center for Theoretical Chemistry, Institute for Physical and Theoretical Chemistry, Beringstr. 4, 53115 Bonn, Germany
| | - Oldamur Hollóczki
- Department of Physical Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem ter 1, H-4010 Debrecen, Hungary
| | - Barbara Kirchner
- Mulliken Center for Theoretical Chemistry, Institute for Physical and Theoretical Chemistry, Beringstr. 4, 53115 Bonn, Germany
| | - Evamarie Hey-Hawkins
- Institute of Inorganic Chemistry, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
- Correspondence:
| |
Collapse
|
8
|
Kuge K, Yamauchi K, Sakai K. Theoretical study on the mechanism of the hydrogen evolution reaction catalyzed by platinum subnanoclusters. Dalton Trans 2023; 52:583-597. [PMID: 36421022 DOI: 10.1039/d2dt02645g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The smallest subnanocluster models of platinum colloid (Ptn) are supposed to diffuse in aqueous media in order to examine their behaviors when they are subjected to the electrocatalytic hydrogen evolution reaction under zero overpotential conditions at pH 0. The DFT approach allows us to clarify the nature of individual proton transfer (PT) and electron transfer (ET) processes together with the importance of relying on concerted proton-electron transfer (CPET) pathways to promote the majority of H* adsorption processes by Ptn subnanoclusters. Although the CPET processes are closely correlated with the Volmer steps (Pt + H+ + e- → Pt-H*) described so far in electrochemistry, our study for the first time points out the essential capability of the Ptn clusters to promote the multiple PT steps without the need to transfer any electrons, revealing the fundamentally high basicity of the naked Ptn clusters (pKa = 27-28 for Pt4, Pt5, and Pt6). The discrete cluster models adopted herein avoid the structural constraints forced by the standard slab models and enable us to discuss the drastic alterations in the geometric and electronic structures of the intermediates given by the consecutive promotion of multiple CPET steps. The weakening of the Pt-H* bond strength with the increasing number of CPET steps is well rationalized by carefully examining the changes in the ν(Pt-H*) vibrational frequencies, the hydricity, and the H2 desorption energy. The behaviors are also correlated with the underpotential and overpotential deposited hydrogen atoms (HUPD and HOPD) discussed in electrochemical studies for many years.
Collapse
Affiliation(s)
- Keita Kuge
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kosei Yamauchi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
| |
Collapse
|
9
|
Freindorf M, McCutcheon M, Beiranvand N, Kraka E. Dihydrogen Bonding-Seen through the Eyes of Vibrational Spectroscopy. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010263. [PMID: 36615456 PMCID: PMC9822382 DOI: 10.3390/molecules28010263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/30/2022]
Abstract
In this work, we analyzed five groups of different dihydrogen bonding interactions and hydrogen clusters with an H3+ kernel utilizing the local vibrational mode theory, developed by our group, complemented with the Quantum Theory of Atoms-in-Molecules analysis to assess the strength and nature of the dihydrogen bonds in these systems. We could show that the intrinsic strength of the dihydrogen bonds investigated is primarily related to the protonic bond as opposed to the hydridic bond; thus, this should be the region of focus when designing dihydrogen bonded complexes with a particular strength. We could also show that the popular discussion of the blue/red shifts of dihydrogen bonding based on the normal mode frequencies is hampered from mode-mode coupling and that a blue/red shift discussion based on local mode frequencies is more meaningful. Based on the bond analysis of the H3+(H2)n systems, we conclude that the bond strength in these crystal-like structures makes them interesting for potential hydrogen storage applications.
Collapse
|
10
|
Lovitt CF, Capra NE, Lastowski RJ, Girolami GS. Steric and Electronic Analyses of Ligand Effects on the Stability of σ-Methane Coordination Complexes: A DFT Study. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Charity Flener Lovitt
- School of Science, Technology, Engineering & Mathematics, University of Washington Bothell, 18115 Campus Way NE, Bothell, Washington 98011, United States
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Nicolas E. Capra
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - R. Joseph Lastowski
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| | - Gregory S. Girolami
- School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
| |
Collapse
|
11
|
Laglera-Gándara C, Ríos P, Fernández-de-Córdova FJ, Barturen M, Fernández I, Conejero S. σ-GeH and Germyl Cationic Pt(II) Complexes. Inorg Chem 2022; 61:20848-20859. [PMID: 36322561 PMCID: PMC9949701 DOI: 10.1021/acs.inorgchem.2c03186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The low electron count Pt(II) complexes [Pt(NHC')(NHC)][BArF] (where NHC is a N-heterocyclic carbene ligand and NHC' its metalated form) react with tertiary hydrogermanes HGeR3 at room temperature to generate the 14-electron platinum(II) germyl derivatives [Pt(GeR3)(NHC)2][BArF]. Low-temperature NMR studies allowed us to detect and characterize spectroscopically some of the σ-GeH intermediates [Pt(η2-HGeR3)(NHC')(NHC)][BArF] that evolve into the platinum-germyl species. One of these compounds has been characterized by X-ray diffraction studies, and the interaction of the H-Ge bond with the platinum center has been analyzed in detail by computational methods, which suggest that the main contribution is the donation of the H-Ge to a σ*(Pt-C) orbital, but backdonation from the platinum to the σ*(Ge-H) orbital is significant. Primary and secondary hydrogermanes also produce the corresponding platinum-germyl complexes, a result that contrasts with the reactivity observed with primary silanes, in which carbon-silicon bond-forming reactions have been reported. According to density functional theory calculations, the formation of Pt-Ge/C-H bonds is both kinetically and thermodynamically preferred over the competitive reaction pathway leading to Pt-H/C-Ge bonds.
Collapse
Affiliation(s)
- Carlos
J. Laglera-Gándara
- Instituto
de Investigaciones Químicas (IIQ), Departamento de Química
Inorgánica, Centro de Innovación en Química Avanzada
(ORFEO-CINQA), CSIC and Universidad de Sevilla, Sevilla 41092, Spain
| | - Pablo Ríos
- Instituto
de Investigaciones Químicas (IIQ), Departamento de Química
Inorgánica, Centro de Innovación en Química Avanzada
(ORFEO-CINQA), CSIC and Universidad de Sevilla, Sevilla 41092, Spain,
| | - Francisco José Fernández-de-Córdova
- Instituto
de Investigaciones Químicas (IIQ), Departamento de Química
Inorgánica, Centro de Innovación en Química Avanzada
(ORFEO-CINQA), CSIC and Universidad de Sevilla, Sevilla 41092, Spain
| | - Marina Barturen
- Instituto
de Investigaciones Químicas (IIQ), Departamento de Química
Inorgánica, Centro de Innovación en Química Avanzada
(ORFEO-CINQA), CSIC and Universidad de Sevilla, Sevilla 41092, Spain
| | - Israel Fernández
- Departamento
de Química Orgánica I y Centro de Innovación
en Química Avanzada (ORFEO-CINQA), facultad de Químicas, Universidad Complutense de Madrid, Madrid 28040, Spain,
| | - Salvador Conejero
- Instituto
de Investigaciones Químicas (IIQ), Departamento de Química
Inorgánica, Centro de Innovación en Química Avanzada
(ORFEO-CINQA), CSIC and Universidad de Sevilla, Sevilla 41092, Spain,
| |
Collapse
|
12
|
Vielhaber T, Faust K, Bögl T, Schöfberger W, Topf C. A Triphos-Modified Tungsten Piano-Stool Complex for the Homogeneous (Conjugate) Hydrogenation of Ketones and Esters. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
13
|
Hert CM, Curley JB, Kelley SP, Hazari N, Bernskoetter WH. Comparative CO 2 Hydrogenation Catalysis with MACHO-type Manganese Complexes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Clayton M. Hert
- The Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| | - Julia B. Curley
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Steven P. Kelley
- The Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| | - Nilay Hazari
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - Wesley H. Bernskoetter
- The Department of Chemistry, The University of Missouri, Columbia, Missouri 65211, United States
| |
Collapse
|
14
|
The catalytic mechanism of hydroformylation of 1-butene on rhodium-coordinated organic linkers in MOFs: A computational study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Perutz RN, Sabo‐Etienne S, Weller AS. Metathesis by Partner Interchange in σ-Bond Ligands: Expanding Applications of the σ-CAM Mechanism. Angew Chem Int Ed Engl 2022; 61:e202111462. [PMID: 34694734 PMCID: PMC9299125 DOI: 10.1002/anie.202111462] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Indexed: 12/13/2022]
Abstract
In 2007 two of us defined the σ-Complex Assisted Metathesis mechanism (Perutz and Sabo-Etienne, Angew. Chem. Int. Ed. 2007, 46, 2578-2592), that is, the σ-CAM concept. This new approach to reaction mechanisms brought together metathesis reactions involving the formation of a variety of metal-element bonds through partner-interchange of σ-bond complexes. The key concept that defines a σ-CAM process is a single transition state for metathesis that is connected by two intermediates that are σ-bond complexes while the oxidation state of the metal remains constant in precursor, intermediates and product. This mechanism is appropriate in situations where σ-bond complexes have been isolated or computed as well-defined minima. Unlike several other mechanisms, it does not define the nature of the transition state. In this review, we highlight advances in the characterization and dynamic rearrangements of σ-bond complexes, most notably alkane and zincane complexes, but also different geometries of silane and borane complexes. We set out a selection of catalytic and stoichiometric examples of the σ-CAM mechanism that are supported by strong experimental and/or computational evidence. We then draw on these examples to demonstrate that the scope of the σ-CAM mechanism has expanded to classes of reaction not envisaged in 2007 (additional σ-bond ligands, agostic complexes, sp2 -carbon, surfaces). Finally, we provide a critical comparison to alternative mechanisms for metathesis of metal-element bonds.
Collapse
Affiliation(s)
| | - Sylviane Sabo‐Etienne
- CNRSLCC (Laboratoire de Chimie de Coordination)205 route de Narbonne, BP 44099F-31077Toulouse Cedex 4France
| | | |
Collapse
|
16
|
Perutz RN, Sabo‐Etienne S, Weller AS. Metathesis by Partner Interchange in σ‐Bond Ligands: Expanding Applications of the σ‐CAM Mechanism. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Sylviane Sabo‐Etienne
- CNRS LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 F-31077 Toulouse Cedex 4 France
| | | |
Collapse
|
17
|
Kuntar SP, Ghosh A, Ghanty TK. Theoretical prediction of FNgM3–kHk (Ng = Ar, Kr, Xe, and Rn; M = Cu, Ag and Au; k = 0–2) molecules. Mol Phys 2022. [DOI: 10.1080/00268976.2021.2020924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Subrahmanya Prasad Kuntar
- Homi Bhabha National Institute, Training School Complex, Mumbai, India
- Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Mumbai, India
| | - Ayan Ghosh
- Homi Bhabha National Institute, Training School Complex, Mumbai, India
- Laser and Plasma Technology Division, Beam Technology Development Group, Bhabha Atomic Research Centre, Mumbai, India
| | - Tapan K. Ghanty
- Homi Bhabha National Institute, Training School Complex, Mumbai, India
- Bio Science Group, Bhabha Atomic Research Centre, Mumbai, India
| |
Collapse
|
18
|
Albinati A, Grellier M, Ollivier J, Georgiev PA. On the energetics of binding and hydride exchange in the RuH 2(H 2) 2[P(C 5H 9) 3)] 2 complex as revealed by inelastic neutron scattering and DFT studies. NEW J CHEM 2022. [DOI: 10.1039/d2nj02100e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low temperature quantum rotation of dihydrogen in RuH2(H2)2[P(C5H9)3)]2 switched to a facile hydride exchange above 150 K.
Collapse
Affiliation(s)
- A. Albinati
- CNR – ICCOM, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
- University of Milan, Milan, Italy
| | - M. Grellier
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
- Université de Toulouse, UPS, INPT 31077 Toulouse, France
| | - J. Ollivier
- Institute Laue-Langevin, 6 rue Jules Horovitz, BP156, F-38042 Grenoble Cedex 9, Grenoble, France
| | - P. A. Georgiev
- Department of Condensed Matter Physics and Microelectronics, The University of Sofia, J. Bourchier, 5, Sofia 1164, Bulgaria
| |
Collapse
|
19
|
|
20
|
A-X⋯σ Interactions-Halogen Bonds with σ-Electrons as the Lewis Base Centre. Molecules 2021; 26:molecules26175175. [PMID: 34500610 PMCID: PMC8434224 DOI: 10.3390/molecules26175175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 12/03/2022] Open
Abstract
CCSD(T)/aug-cc-pVTZ//ωB97XD/aug-cc-pVTZ calculations were performed for halogen-bonded complexes. Here, the molecular hydrogen, cyclopropane, cyclobutane and cyclopentane act as Lewis base units that interact through the electrons of the H–H or C–C σ-bond. The FCCH, ClCCH, BrCCH and ICCH species, as well as the F2, Cl2, Br2 and I2 molecular halogens, act as Lewis acid units in these complexes, interacting through the σ-hole localised at the halogen centre. The Quantum Theory of Atoms in Molecules (QTAIM), the Natural Bond Orbital (NBO) and the Energy Decomposition Analysis (EDA) approaches were applied to analyse these aforementioned complexes. These complexes may be classified as linked by A–X···σ halogen bonds, where A = C, X (halogen). However, distinct properties of these halogen bonds are observed that depend partly on the kind of electron donor: dihydrogen, cyclopropane, or another cycloalkane. Examples of similar interactions that occur in crystals are presented; Cambridge Structural Database (CSD) searches were carried out to find species linked by the A–X···σ halogen bonds.
Collapse
|
21
|
Ríos P, Fernández‐de‐Córdova FJ, Borge J, Curado N, Lledós A, Conejero S. Ligand Effects in Carbon−Boron Coupling Processes Mediated by σ‐BH Platinum Complexes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Pablo Ríos
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica, CSIC and Universidad de Sevilla Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/Américo Vespucio 49 41092 Sevilla Spain
| | - Francisco José Fernández‐de‐Córdova
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica, CSIC and Universidad de Sevilla Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/Américo Vespucio 49 41092 Sevilla Spain
| | - Javier Borge
- Departamento de Quimica Física y Analítica Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad de Oviedo C/Julián Clavería 8 33006 Oviedo Spain
| | - Natalia Curado
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica, CSIC and Universidad de Sevilla Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/Américo Vespucio 49 41092 Sevilla Spain
| | - Agustí Lledós
- Departament de Química Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universitat Autònoma de Barcelona Edifici Cn 08193 Cerdanyola del Vallés Spain
| | - Salvador Conejero
- Instituto de Investigaciones Químicas (IIQ) Departamento de Química Inorgánica, CSIC and Universidad de Sevilla Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/Américo Vespucio 49 41092 Sevilla Spain
| |
Collapse
|
22
|
Jaramillo DE, Jiang HZH, Evans HA, Chakraborty R, Furukawa H, Brown CM, Head-Gordon M, Long JR. Ambient-Temperature Hydrogen Storage via Vanadium(II)-Dihydrogen Complexation in a Metal-Organic Framework. J Am Chem Soc 2021; 143:6248-6256. [PMID: 33852299 PMCID: PMC10951977 DOI: 10.1021/jacs.1c01883] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The widespread implementation of H2 as a fuel is currently hindered by the high pressures or cryogenic temperatures required to achieve reasonable storage densities. In contrast, the realization of materials that strongly and reversibly adsorb hydrogen at ambient temperatures and moderate pressures could transform the transportation sector and expand adoption of fuel cells in other applications. To date, however, no adsorbent has been identified that exhibits a binding enthalpy within the optimal range of -15 to -25 kJ/mol for ambient-temperature hydrogen storage. Here, we report the hydrogen adsorption properties of the metal-organic framework (MOF) V2Cl2.8(btdd) (H2btdd, bis(1H-1,2,3-triazolo[4,5-b],[4',5'-i])dibenzo[1,4]dioxin), which features exposed vanadium(II) sites capable of backbonding with weak π acids. Significantly, gas adsorption data reveal that this material binds H2 with an enthalpy of -21 kJ/mol. This binding energy enables usable hydrogen capacities that exceed that of compressed storage under the same operating conditions. The Kubas-type vanadium(II)-dihydrogen complexation is characterized by a combination of techniques. From powder neutron diffraction data, a V-D2(centroid) distance of 1.966(8) Å is obtained, the shortest yet reported for a MOF. Using in situ infrared spectroscopy, the H-H stretch was identified, and it displays a red shift of 242 cm-1. Electronic structure calculations show that a main contribution to bonding stems from the interaction between the vanadium dπ and H2 σ* orbital. Ultimately, the pursuit of MOFs containing high densities of weakly π-basic metal sites may enable storage capacities under ambient conditions that far surpass those accessible with compressed gas storage.
Collapse
Affiliation(s)
- David E Jaramillo
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Henry Z H Jiang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hayden A Evans
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Romit Chakraborty
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Hiroyasu Furukawa
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Craig M Brown
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Jeffrey R Long
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| |
Collapse
|
23
|
Lücke MP, Yao S, Driess M. Boosting homogeneous chemoselective hydrogenation of olefins mediated by a bis(silylenyl)terphenyl-nickel(0) pre-catalyst. Chem Sci 2021; 12:2909-2915. [PMID: 34164057 PMCID: PMC8179395 DOI: 10.1039/d0sc06471h] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/04/2021] [Indexed: 11/21/2022] Open
Abstract
The isolable chelating bis(N-heterocyclic silylenyl)-substituted terphenyl ligand [SiII(Terp)SiII] as well as its bis(phosphine) analogue [PIII(Terp)PIII] have been synthesised and fully characterised. Their reaction with Ni(cod)2 (cod = cycloocta-1,5-diene) affords the corresponding 16 VE nickel(0) complexes with an intramolecular η 2-arene coordination of Ni, [E(Terp)E]Ni(η 2-arene) (E = PIII, SiII; arene = phenylene spacer). Due to a strong cooperativity of the Si and Ni sites in H2 activation and H atom transfer, [SiII(Terp)SiII]Ni(η 2-arene) mediates very effectively and chemoselectively the homogeneously catalysed hydrogenation of olefins bearing functional groups at 1 bar H2 pressure and room temperature; in contrast, the bis(phosphine) analogous complex shows only poor activity. Catalytic and stoichiometric experiments revealed the important role of the η2-coordination of the Ni(0) site by the intramolecular phenylene with respect to the hydrogenation activity of [SiII(Terp)SiII]Ni(η 2-arene). The mechanism has been established by kinetic measurements, including kinetic isotope effect (KIE) and Hammet-plot correlation. With this system, the currently highest performance of a homogeneous nickel-based hydrogenation catalyst of olefins (TON = 9800, TOF = 6800 h-1) could be realised.
Collapse
Affiliation(s)
- Marcel-Philip Lücke
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 115, Sekr. C2 D-10623 Berlin Germany
| | - Shenglai Yao
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 115, Sekr. C2 D-10623 Berlin Germany
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 115, Sekr. C2 D-10623 Berlin Germany
| |
Collapse
|
24
|
Amanullah S, Saha P, Nayek A, Ahmed ME, Dey A. Biochemical and artificial pathways for the reduction of carbon dioxide, nitrite and the competing proton reduction: effect of 2nd sphere interactions in catalysis. Chem Soc Rev 2021; 50:3755-3823. [DOI: 10.1039/d0cs01405b] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Reduction of oxides and oxoanions of carbon and nitrogen are of great contemporary importance as they are crucial for a sustainable environment.
Collapse
Affiliation(s)
- Sk Amanullah
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Paramita Saha
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Abhijit Nayek
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Md Estak Ahmed
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| | - Abhishek Dey
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata
- India
| |
Collapse
|
25
|
Gilbert-Wilson R, Das B, Mizdrak D, Field LD, Ball GE. Observation and Analysis of Large Dynamic Frequency Shifts in the 1H NMR Signals of H–D in Deuterium-Substituted Dihydrogen Complexes. Inorg Chem 2020; 59:15570-15573. [DOI: 10.1021/acs.inorgchem.0c02082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan Gilbert-Wilson
- School of Chemistry, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
| | - Biswanath Das
- School of Chemistry, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
| | - Dejan Mizdrak
- School of Chemistry, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
| | - Leslie D. Field
- School of Chemistry, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
| | - Graham E. Ball
- School of Chemistry, University of New South Wales (UNSW), Sydney, New South Wales 2052, Australia
| |
Collapse
|
26
|
Huang W, Shi M, Song H, Wu Q, Huang X, Bi L, Yang Z, Wang Y. Hydrogen storage on chains-terminated fullerene C20 with density functional theory. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137940] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
27
|
Moyo PS, Matsinha LC, Makhubela BC. Pd(II) and Pt(II) catalysed selective synthesis of furfuryl alcohol: Solvent effects and insights into the mechanism. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121362] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
28
|
Matsumoto M, Kita T, Tanaka K. Hydrogen Adsorption/Desorption Properties of Anhydrous Metal Oxalates; Metal = Mg 2+ and Ca 2+. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mitsuru Matsumoto
- Toyota Central R&D Labs., Inc., 41-1 Nagakute, Aichi 480-1192, Japan
| | - Takuji Kita
- Toyota Motor Corp. Higashi-Fuji Technical Center, 1200 Mishuku, Susono, Shizuoka 410-1193, Japan
| | - Kazuyoshi Tanaka
- Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Nishihiraki-cho, Takano, Sakyo-ku, Kyoto 606-8103, Japan
| |
Collapse
|
29
|
Osakada K, Tsuchido Y, Tanabe M. Multinuclear Pd and Pt complexes with bridging Si- and Ge-ligands. Stable and flexible coordination bonds and structures and reactions of the molecules. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213195] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
30
|
Heiß P, Hornung J, Zhou X, Jandl C, Pöthig A, Gemel C, Fischer RA. Combined Experimental and Theoretical Study on Hampered Phosphine Dissociation in Heteroleptic Ni/Zn Complexes. Inorg Chem 2020; 59:514-522. [PMID: 31874031 DOI: 10.1021/acs.inorgchem.9b02798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Heterometallic Ni/Zn complexes can serve as molecular models for the semihydrogenation of acetylene catalyzed by heterogeneous Ni/Zn phases. Pursuing this target, we present the synthesis of the series [Ni(ZnCp*)n(ZnMe)n(PEt3)4-n] (n = 1-3; 1, 2, 3) which is obtained via E/Zn exchange from [Ni(ECp*)n(PEt3)4-n] (n = 1-3, E = Al, Ga; P1, P2, P3). The isolation of the intermediate compound [Ni(GaCp*)(ZnCp*)(ZnMe)(PEt3)2] (2a) supports the assumption of a stepwise Ga/Zn exchange in the formation of 3. The dissociation behavior of PEt3 in 2 and 3 was investigated experimentally using variable temperature (VT) UV-vis spectroscopy indicating suppressed phosphine dissociation in both cases. For comparison, the absorption spectra of the saturated and unsaturated compounds were calculated using time dependent DFT calculations (TDDFT). Energy decomposition analysis with the natural orbital for chemical valence extension (EDA NOCV) calculations shows a bond strengthening of the Ni-P bond by successive substitution of the phosphines with (ZnR)2 units. The influence of different phosphines (PMe3, PEt3, PPh3, P(OEt)3) on Ni-P bond length and on Zn-Zn interactions in [Ni(ZnR)2n(PR')4-n] (R = Cp*, Me; R' = Me, Et, Ph, OEt) was also studied by DFT calculations. A correlation of increasing sterical demand of the phosphine ligand and a shortening of the Zn-Zn distances is observed.
Collapse
Affiliation(s)
- Patricia Heiß
- Department of Chemistry , Technical University Munich , Lichtenbergstrasse 4 , D-85748 Garching , Germany.,Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| | - Julius Hornung
- Department of Chemistry , Technical University Munich , Lichtenbergstrasse 4 , D-85748 Garching , Germany.,Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| | - Xiaoyu Zhou
- Department of Chemistry , Technical University Munich , Lichtenbergstrasse 4 , D-85748 Garching , Germany.,Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| | - Christian Jandl
- Department of Chemistry , Technical University Munich , Lichtenbergstrasse 4 , D-85748 Garching , Germany.,Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| | - Alexander Pöthig
- Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| | - Christian Gemel
- Department of Chemistry , Technical University Munich , Lichtenbergstrasse 4 , D-85748 Garching , Germany.,Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| | - Roland A Fischer
- Department of Chemistry , Technical University Munich , Lichtenbergstrasse 4 , D-85748 Garching , Germany.,Catalysis Research Centre , Technical University Munich , Ernst-Otto-Fischer-Strasse 1 , D-85748 Garching , Germany
| |
Collapse
|
31
|
Asensio JM, Bouzouita D, van Leeuwen PWNM, Chaudret B. σ-H-H, σ-C-H, and σ-Si-H Bond Activation Catalyzed by Metal Nanoparticles. Chem Rev 2019; 120:1042-1084. [PMID: 31659903 DOI: 10.1021/acs.chemrev.9b00368] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Activation of H-H, Si-H, and C-H bonds through σ-bond coordination has grown in the past 30 years from a scientific curiosity to an important tool in the functionalization of hydrocarbons. Several mechanisms were discovered via which the initially σ-bonded substrate could be converted: oxidative addition, heterolytic cleavage, σ-bond metathesis, electrophilic attack, etc. The use of metal nanoparticles (NPs) in this area is a more recent development, but obviously nanoparticles offer a much richer basis than classical homogeneous and heterogeneous catalysts for tuning reactivity for such a demanding process as C-H functionalization. Here, we will review the surface chemistry of nanoparticles and catalytic reactions occurring in the liquid phase, catalyzed by either colloidal or supported metal NPs. We consider nanoparticles prepared in solution, which are stabilized and tuned by polymers, ligands, and supports. The question we have addressed concerns the differences and similarities between molecular complexes and metal NPs in their reactivity toward σ-bond activation and functionalization.
Collapse
Affiliation(s)
- Juan M Asensio
- LPCNO, Université de Toulouse , CNRS , INSA, UPS, 135 avenue de Rangueil , 31077 Toulouse , France
| | - Donia Bouzouita
- LPCNO, Université de Toulouse , CNRS , INSA, UPS, 135 avenue de Rangueil , 31077 Toulouse , France
| | - Piet W N M van Leeuwen
- LPCNO, Université de Toulouse , CNRS , INSA, UPS, 135 avenue de Rangueil , 31077 Toulouse , France
| | - Bruno Chaudret
- LPCNO, Université de Toulouse , CNRS , INSA, UPS, 135 avenue de Rangueil , 31077 Toulouse , France
| |
Collapse
|
32
|
A hexagonal planar transition-metal complex. Nature 2019; 574:390-393. [DOI: 10.1038/s41586-019-1616-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/13/2019] [Indexed: 11/08/2022]
|
33
|
Liu Y, Su B, Dong W, Li ZH, Wang H. Structural Characterization of a Boron(III) η2-σ-Silane-Complex. J Am Chem Soc 2019; 141:8358-8363. [DOI: 10.1021/jacs.9b03213] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yizhen Liu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Road 2005, Shanghai 200438, China
| | - Bo Su
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Road 2005, Shanghai 200438, China
| | - Weishi Dong
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Road 2005, Shanghai 200438, China
| | - Zhen Hua Li
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Road 2005, Shanghai 200438, China
| | - Huadong Wang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Songhu Road 2005, Shanghai 200438, China
| |
Collapse
|
34
|
Schmidt KM, Misture ST, Graeve OA, Vasquez VR. Interaction of Hydrogen with MB 6 (M = Ba, Ca, La, and Sr) Surfaces from First Principles. ACS OMEGA 2019; 4:65-72. [PMID: 31459312 PMCID: PMC6649068 DOI: 10.1021/acsomega.8b02652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 12/21/2018] [Indexed: 06/10/2023]
Abstract
We show results of basic energetics and interacting behavior of hydrogen with metal hexaboride surfaces using a combination of self-consistent density functional calculations and dynamics based on the Car-Parrinello method. Our results show that hydrogen is strongly attracted to localized exposed boron atoms and interactions with the terminal cations are strictly repulsive. From these, preliminary local adsorption energy calculations suggest that a single hydrogen molecule per surface unit-cell is possible (one ML). Strongest bonds are found when hydrogen is above the terminal boron atoms affected by reduced coordination and dangling bonds. This location serves to restore the hexaboride unit to a more stable structure by providing electronic density to the deficient surface octahedra. Additionally, trajectories from dynamic simulations provide insight into how hydrogen recombination reactions occur on the surface through dissociative adsorption and the method of travel prior to recombination to be along the octahedral face and bridging sites connecting separate unit cells on the surface. Upon adsorption, a single hydrogen atom becomes localized at the dangling bond site while the second interacts with the surface along a weaker potential energy path. Desorption at lower temperatures occurs when migrating atoms from separate adsorption sites intersect to form a new pair.
Collapse
Affiliation(s)
- Kevin M. Schmidt
- Chemical and Materials
Engineering Department; University of Nevada
Reno; Reno, Nevada 89557, United States
| | - Scott T. Misture
- Kazuo Inamori School of Engineering; Alfred University; 2 Pine Street; Alfred, New
York 14802, United
States
| | - Olivia A. Graeve
- Department of Mechanical and Aerospace Engineering; University of California, San Diego; La Jolla, California 92093, United States
| | - Victor R. Vasquez
- Chemical and Materials
Engineering Department; University of Nevada
Reno; Reno, Nevada 89557, United States
| |
Collapse
|
35
|
Joshi M, Ghanty TK. Predicted M(H 2) 12n+ (M = Ac, Th, Pa, U, La and n = 3, 4) complexes with twenty-four hydrogen atoms bound to the metal ion. Chem Commun (Camb) 2019; 55:7788-7791. [PMID: 31210209 DOI: 10.1039/c9cc02458a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we have shown that La(iii), Ac(iii), Th(iii), Th(iv), Pa(iv) and U(iv) can directly bind with a maximum of 24 hydrogen atoms in M(H2)12 in the first sphere of coordination, which would be a new record in any metal-hydrogen complex investigated at the molecular level, where all the hydrogen atoms are directly connected to the central metal ion through M-η2(H2) bonds. Moreover, Ac(H2)n3+ (n = 9-12) systems satisfy the 18-electron rule.
Collapse
Affiliation(s)
- Meenakshi Joshi
- Theoretical Chemistry Section, Chemistry Group, Bhabha Atomic Research Centre, Mumbai-400085, India.
| | | |
Collapse
|
36
|
Leon NJ, Yu HC, Mazzacano TJ, Mankad NP. Mixed phosphine/carbonyl derivatives of heterobimetallic copper–iron and copper–tungsten catalysts. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.09.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Temperature-dependent elongation of the H H bond in dihydrogen complexes of Ru(II) bearing an NHC ligand: Effect of the NHC and trans ligands. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
38
|
Adams RE, Grusenmeyer TA, Griffith AL, Schmehl RH. Transition metal hydride complexes as mechanistic models for proton reduction catalysis. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
39
|
Gonzalez ME, Eckert J, Aquino AJA, Poirier B. A quantum dynamical study of the rotation of the dihydrogen ligand in the Fe(H) 2(H 2)(PEtPh 2) 3 coordination complex. J Chem Phys 2018; 148:154303. [PMID: 29679974 DOI: 10.1063/1.5026637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Progress in the hydrogen fuel field requires a clear understanding and characterization of how materials of interest interact with hydrogen. Due to the inherently quantum mechanical nature of hydrogen nuclei, any theoretical studies of these systems must be treated quantum dynamically. One class of material that has been examined in this context are dihydrogen complexes. Since their discovery by Kubas in 1984, many such complexes have been studied both experimentally and theoretically. This particular study examines the rotational dynamics of the dihydrogen ligand in the Fe(H)2(H2)(PEtPh2)3 complex, allowing for full motion in both the rotational degrees of freedom and treating the quantum dynamics (QD) explicitly. A "gas-phase" global potential energy surface is first constructed using density functional theory with the Becke, 3-parameter, Lee-Yang-Parr functional; this is followed by an exact QD calculation of the corresponding rotation/libration states. The results provide insight into the dynamical correlation of the two rotation angles as well as a comprehensive analysis of both ground- and excited-state librational tunneling splittings. The latter was computed to be 6.914 cm-1-in excellent agreement with the experimental value of 6.4 cm-1. This work represents the first full-dimensional ab initio exact QD calculation ever performed for dihydrogen ligand rotation in a coordination complex.
Collapse
Affiliation(s)
- Megan E Gonzalez
- Department of Chemistry and Biochemistry, and Department of Physics, Texas Tech University, P.O. Box 41061, Lubbock, Texas 79409-1061, USA
| | - Juergen Eckert
- Department of Chemistry and Biochemistry, and Department of Physics, Texas Tech University, P.O. Box 41061, Lubbock, Texas 79409-1061, USA
| | - Adelia J A Aquino
- Department of Chemistry and Biochemistry, and Department of Physics, Texas Tech University, P.O. Box 41061, Lubbock, Texas 79409-1061, USA
| | - Bill Poirier
- Department of Chemistry and Biochemistry, and Department of Physics, Texas Tech University, P.O. Box 41061, Lubbock, Texas 79409-1061, USA
| |
Collapse
|
40
|
Abstract
The π-complex theory developed by Michael J. S. Dewar in 1949 has had its most profound impact as part of the Dewar-Chatt-Duncanson model, a seminal and foundational contribution to the field of organometallic chemistry. Over time it has demonstrated its utility in systems far from those originally envisaged, including σ-coordinated metal-complexes. This latter application is notable due to Dewar's original skepticism that his π-complex theory could be extended to σ-bonds. Separately it has previously been demonstrated that a one-electron wave function. can be shown to satisfy an exact one-electron Schrödinger equation describing the motion of the single electron in the average field of the remaining electrons. To celebrate the centenary of his birth this paper seeks to demonstrate that σ-coordinated metal-complexes present a perfect system to exemplify both the utility of the one-electron wave function and the power of the π-complex theory.
Collapse
Affiliation(s)
- Eamonn F Healy
- Department of Chemistry, St. Edward's University, Austin, TX 78704, USA
| |
Collapse
|
41
|
Amenuvor G, Darkwa J, Makhubela BCE. Homogeneous polymetallic ruthenium(ii)^zinc(ii) complexes: robust catalysts for the efficient hydrogenation of levulinic acid to γ-valerolactone. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00265g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New Ru(ii) complexes (1 and 2) have been synthesized and reacted with Zn(OAc)2 to form hexanuclear complexes (3 and 4) containing four Ru(ii) and two Zn(ii) centres. The latter are highly active and recyclable catalyst for the conversion of levulinic acid to GVL.
Collapse
Affiliation(s)
- Gershon Amenuvor
- Department of Chemistry
- University of Johannesburg
- Auckland Park
- South Africa
| | - James Darkwa
- Department of Chemistry
- University of Johannesburg
- Auckland Park
- South Africa
| | | |
Collapse
|
42
|
Zhou J, Lee CI, Ozerov OV. Computational Study of the Mechanism of Dehydrogenative Borylation of Terminal Alkynes by SiNN Iridium Complexes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03835] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia Zhou
- MIIT
Key Laboratory of Critical Materials Technology for New Energy Conversion
and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Chun-I Lee
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Oleg V. Ozerov
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| |
Collapse
|
43
|
Zhu J, Ha E, Zhao G, Zhou Y, Huang D, Yue G, Hu L, Sun N, Wang Y, Lee LYS, Xu C, Wong KY, Astruc D, Zhao P. Recent advance in MXenes: A promising 2D material for catalysis, sensor and chemical adsorption. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.09.012] [Citation(s) in RCA: 356] [Impact Index Per Article: 50.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
44
|
Goldberg JM, Goldberg KI, Heinekey DM, Burgess SA, Lao DB, Linehan JC. Detection of an Iridium–Dihydrogen Complex: A Proposed Intermediate in Ionic Hydrogenation. J Am Chem Soc 2017; 139:12638-12646. [DOI: 10.1021/jacs.7b06480] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jonathan M. Goldberg
- Department
of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Karen I. Goldberg
- Department
of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - D. Michael Heinekey
- Department
of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
| | - Samantha A. Burgess
- Catalysis
Science Group, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - David B. Lao
- Catalysis
Science Group, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - John C. Linehan
- Catalysis
Science Group, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
45
|
Wang S, Huang H, Dorcet V, Roisnel T, Bruneau C, Fischmeister C. Efficient Iridium Catalysts for Base-Free Hydrogenation of Levulinic Acid. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00503] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- S. Wang
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, , Organometallics:
Materials and Catalysis, Centre for Catalysis and Green Chemistry, Université de Rennes 1, Campus de Beaulieu, F-35042 Rennes
Cedex, France
| | - H. Huang
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, , Organometallics:
Materials and Catalysis, Centre for Catalysis and Green Chemistry, Université de Rennes 1, Campus de Beaulieu, F-35042 Rennes
Cedex, France
| | - V. Dorcet
- Centre
de Diffractométrie X Institut des Sciences Chimiques de Rennes
UMR 6226 CNRS, Université de Rennes 1, F-35042 Rennes Cedex, France
| | - T. Roisnel
- Centre
de Diffractométrie X Institut des Sciences Chimiques de Rennes
UMR 6226 CNRS, Université de Rennes 1, F-35042 Rennes Cedex, France
| | - C. Bruneau
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, , Organometallics:
Materials and Catalysis, Centre for Catalysis and Green Chemistry, Université de Rennes 1, Campus de Beaulieu, F-35042 Rennes
Cedex, France
| | - C. Fischmeister
- Institut
des Sciences Chimiques de Rennes, UMR 6226 CNRS, , Organometallics:
Materials and Catalysis, Centre for Catalysis and Green Chemistry, Université de Rennes 1, Campus de Beaulieu, F-35042 Rennes
Cedex, France
| |
Collapse
|
46
|
Ramaraj A, Reddy KHK, Keil H, Herbst-Irmer R, Stalke D, Jemmis ED, Jagirdar BR. Approaches to Sigma Complexes via Displacement of Agostic Interactions: An Experimental and Theoretical Investigation. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00210] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Ramaraj
- Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - K. Hari Krishna Reddy
- Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - Helena Keil
- Institut
für Anorganische Chemie, Universität Göttingen, Tammannstrasse
4, 37077 Göttingen, Germany
| | - Regine Herbst-Irmer
- Institut
für Anorganische Chemie, Universität Göttingen, Tammannstrasse
4, 37077 Göttingen, Germany
| | - Dietmar Stalke
- Institut
für Anorganische Chemie, Universität Göttingen, Tammannstrasse
4, 37077 Göttingen, Germany
| | - Eluvathingal D. Jemmis
- Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - Balaji R. Jagirdar
- Department of Inorganic & Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India
| |
Collapse
|
47
|
Gorgas N, Alves LG, Stöger B, Martins AM, Veiros LF, Kirchner K. Stable, Yet Highly Reactive Nonclassical Iron(II) Polyhydride Pincer Complexes: Z-Selective Dimerization and Hydroboration of Terminal Alkynes. J Am Chem Soc 2017; 139:8130-8133. [PMID: 28586219 DOI: 10.1021/jacs.7b05051] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The synthesis, characterization, and catalytic activity of nonclassical iron(II) polyhydride complexes containing tridentate PNP pincer-type ligands is described. These compounds of the general formula [Fe(PNP)(H)2(η2-H2)] exhibit remarkable reactivity toward terminal alkynes. They efficiently promote the catalytic dimerization of aryl acetylenes giving the corresponding conjugated 1,3-enynes in excellent yields with low catalyst loadings. When the reaction is carried out in the presence of pinacolborane, vinyl boronates are obtained. Both reactions take place under mild conditions and are highly chemo-, regio-, and stereoselective with up to 99% Z-selectivity.
Collapse
Affiliation(s)
| | - Luis G Alves
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa , Av. Rovisco Pais No. 1, 1049-001 Lisboa, Portugal
| | | | - Ana M Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa , Av. Rovisco Pais No. 1, 1049-001 Lisboa, Portugal
| | - Luis F Veiros
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa , Av. Rovisco Pais No. 1, 1049-001 Lisboa, Portugal
| | | |
Collapse
|
48
|
|
49
|
Hicken A, White AJP, Crimmin MR. Reversible Coordination of Boron–, Aluminum–, Zinc–, Magnesium–, and Calcium–Hydrogen Bonds to Bent {CuL2} Fragments: Heavy σ Complexes of the Lightest Coinage Metal. Inorg Chem 2017; 56:8669-8682. [DOI: 10.1021/acs.inorgchem.7b00182] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Alexandra Hicken
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Andrew J. P. White
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| | - Mark R. Crimmin
- SSCP
DTP, Grantham Institute, and ‡Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, U.K
| |
Collapse
|
50
|
Butler MJ, Crimmin MR. Magnesium, zinc, aluminium and gallium hydride complexes of the transition metals. Chem Commun (Camb) 2017; 53:1348-1365. [PMID: 28070586 PMCID: PMC5777540 DOI: 10.1039/c6cc05702k] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 12/23/2016] [Indexed: 12/21/2022]
Abstract
The preparation and applications of heterobimetallic complexes continue to occupy researchers in the fields of organometallic, main group, and coordination chemistry. This interest stems from the promise these complexes hold as precursors to materials, reagents in synthesis and as new catalysis. Here we survey and organise the state-of-the-art understanding of the TM-H-M linkage (M = Mg, Zn, Al, Ga). We discuss the structure and bonding in these complexes, their known reactivity, and their largely unrealised potential in catalysis.
Collapse
Affiliation(s)
- Michael J Butler
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK.
| | - Mark R Crimmin
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK.
| |
Collapse
|