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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.
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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.
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2
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Lachguar A, Pichugov AV, Neumann T, Dubrawski Z, Camp C. Cooperative activation of carbon-hydrogen bonds by heterobimetallic systems. Dalton Trans 2024; 53:1393-1409. [PMID: 38126396 PMCID: PMC10804807 DOI: 10.1039/d3dt03571a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023]
Abstract
The direct activation of C-H bonds has been a rich and active field of organometallic chemistry for many years. Recently, incredible progress has been made and important mechanistic insights have accelerated research. In particular, the use of heterobimetallic complexes to heterolytically activate C-H bonds across the two metal centers has seen a recent surge in interest. This perspective article aims to orient the reader in this fast moving field, highlight recent progress, give design considerations for further research and provide an optimistic outlook on the future of catalytic C-H functionalization with heterobimetallic complexes.
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Affiliation(s)
- Abdelhak Lachguar
- Université de Lyon, Institut de Chimie de Lyon, Laboratory of Catalysis, Polymerization, Processes & Materials, CP2M UMR 5128 CNRS-UCB Lyon 1-CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
| | - Andrey V Pichugov
- Université de Lyon, Institut de Chimie de Lyon, Laboratory of Catalysis, Polymerization, Processes & Materials, CP2M UMR 5128 CNRS-UCB Lyon 1-CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
| | - Till Neumann
- Université de Lyon, Institut de Chimie de Lyon, Laboratory of Catalysis, Polymerization, Processes & Materials, CP2M UMR 5128 CNRS-UCB Lyon 1-CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
| | - Zachary Dubrawski
- Université de Lyon, Institut de Chimie de Lyon, Laboratory of Catalysis, Polymerization, Processes & Materials, CP2M UMR 5128 CNRS-UCB Lyon 1-CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
| | - Clément Camp
- Université de Lyon, Institut de Chimie de Lyon, Laboratory of Catalysis, Polymerization, Processes & Materials, CP2M UMR 5128 CNRS-UCB Lyon 1-CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
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3
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Chemical Transformations in Heterobimetallic Complexes Facilitated by the Second Coordination Sphere. TOP ORGANOMETAL CHEM 2023. [DOI: 10.1007/3418_2022_79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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4
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Zurakowski JA, Austen BJ, Drover MW. Exterior decorating: Lewis acid secondary coordination spheres for cooperative reactivity. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2022.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Charles RM, Brewster TP. H 2 and carbon-heteroatom bond activation mediated by polarized heterobimetallic complexes. Coord Chem Rev 2021; 433:213765. [PMID: 35418712 PMCID: PMC9004596 DOI: 10.1016/j.ccr.2020.213765] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The field of heterobimetallic chemistry has rapidly expanded over the last decade. In addition to their interesting structural features, heterobimetallic structures have been found to facilitate a range of stoichiometric bond activations and catalytic processes. The accompanying review summarizes advances in this area since January of 2010. The review encompasses well-characterized heterobimetallic complexes, with a particular focus on mechanistic details surrounding their reactivity applications.
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Affiliation(s)
- R Malcolm Charles
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Smith Chemistry Building, Memphis, TN 38152, United States
| | - Timothy P Brewster
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Smith Chemistry Building, Memphis, TN 38152, United States
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Navarro M, Campos J. Bimetallic frustrated Lewis pairs. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2021. [DOI: 10.1016/bs.adomc.2021.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Mandegani Z, Nahaei A, Nikravesh M, Nabavizadeh SM, Shahsavari HR, Abu-Omar MM. Synthesis and Characterization of RhIII–MII (M = Pt, Pd) Heterobimetallic Complexes Based on a Bisphosphine Ligand: Tandem Reactions Using Ethanol. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00594] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Zeinab Mandegani
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Asma Nahaei
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Mahshid Nikravesh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - S. Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Hamid R. Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Mahdi M. Abu-Omar
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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Charles RM, Taylor NS, Mercado AA, Frost CE, Yokley TW, Eckenhoff WT, Schley ND, DeYonker NJ, Brewster TP. Systematic evaluation of the electronic effect of aluminum-containing ligands in iridium-aluminum and rhodium-aluminum bimetallic complexes. Dalton Trans 2020; 49:13029-13043. [PMID: 32915181 PMCID: PMC7530109 DOI: 10.1039/d0dt02472d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2024]
Abstract
Pyridinemethanolate and oxyquinoline derivatives of previously reported late transition metal-aluminum heterobimetallic complexes containing iridium and rhodium have been synthesized and characterized. A combination of experimental and computational data permits a direct comparison of the electronic effects of each novel aluminum-containing ligand in our library on the late transition metal centers. Alongside electronic data of previously reported oxypyridine bridged systems, we conclude that the addition of a dialkylaluminum(X) (X = anion) fragment does not significantly perturb the electron donor ability of the bridging ligand. Anions bound to the aluminum are also shown to behave similarly. The overall library, thus, suggests that the best predictor of the electron donor ability of an alkylaluminum-containing ligand to a transition metal is the donor power of the bridging ligand.
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Affiliation(s)
- R Malcolm Charles
- Department of Chemistry, The University of Memphis, 3744 Walker Avenue, Smith Chemistry Building, Memphis, Tennessee 38152, USA.
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Yokley TW, Tupkar H, Schley ND, DeYonker NJ, Brewster TP. CO 2 Capture by 2-(Methylamino)pyridine Ligated Aluminum Alkyl Complexes. Eur J Inorg Chem 2020; 2020:2958-2967. [PMID: 32879618 PMCID: PMC7457790 DOI: 10.1002/ejic.202000437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Indexed: 12/19/2022]
Abstract
A set of novel, easily synthesized aluminum complexes, Al[κ2-N,N-2-(methylamino)pyridine]2R (R = Et, iBu) are reported. When subjected to 1 atm of CO2 pressure, each hemilabile pyridine arm dissociates and facilitates cooperative activation of the CO2 substrate reminiscent of a Frustrated Lewis Pair. This reaction has limited precedent for Al/N based Lewis Pair systems, and this is the first system readily shown to sequester multiple equivalents of CO2 per aluminum center. The ethyl variant then reacts further, inserting a third equivalent of CO2 into the aluminum alkyl to generate an aluminum carboxylate. Examples of this type of reactivity are rare under thermal conditions. A joint experimental/computational study supports the proposed reaction mechanism.
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Affiliation(s)
- Timothy W Yokley
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Memphis, TN 38152, USA
| | - Hrishikesh Tupkar
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Memphis, TN 38152, USA
| | - Nathan D Schley
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA
| | - Nathan J DeYonker
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Memphis, TN 38152, USA
| | - Timothy P Brewster
- Department of Chemistry, The University of Memphis, 3744 Walker Ave., Memphis, TN 38152, USA
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Yokley TW, Schley ND, Brewster TP. Rhodium and iridium NNO-Scorpionate complexes: synthesis, structure, and reactivity with aluminum alkyls. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Charles RM, Tupkar H, Helland SD, Mercado AA, Eckenhoff WT, Schley ND, DeYonker NJ, Brewster TP. Synthesis and Electronic Characterization of Iridium‐Aluminum and Rhodium‐Aluminum Heterobimetallic Complexes Bridged by 3‐Oxypyridine and 4‐Oxypyridine. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- R. Malcolm Charles
- Department of Chemistry The University of Memphis 3744 Walker Avenue, Smith Chemistry Building 38152 Memphis Tennessee USA
| | - Hrishikesh Tupkar
- Department of Chemistry The University of Memphis 3744 Walker Avenue, Smith Chemistry Building 38152 Memphis Tennessee USA
| | - Sarah D. Helland
- Department of Chemistry Rhodes College 2000 N. Parkway 38112 Memphis Tennessee USA
| | - Angel A. Mercado
- Department of Chemistry The University of Memphis 3744 Walker Avenue, Smith Chemistry Building 38152 Memphis Tennessee USA
| | - William T. Eckenhoff
- Department of Chemistry Rhodes College 2000 N. Parkway 38112 Memphis Tennessee USA
| | - Nathan D. Schley
- Department of Chemistry Vanderbilt University 37235 Nashville Tennessee USA
| | - Nathan J. DeYonker
- Department of Chemistry The University of Memphis 3744 Walker Avenue, Smith Chemistry Building 38152 Memphis Tennessee USA
| | - Timothy P. Brewster
- Department of Chemistry The University of Memphis 3744 Walker Avenue, Smith Chemistry Building 38152 Memphis Tennessee USA
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12
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Vollmer MV, Ye J, Linehan JC, Graziano BJ, Preston A, Wiedner ES, Lu CC. Cobalt-Group 13 Complexes Catalyze CO2 Hydrogenation via a Co(−I)/Co(I) Redox Cycle. ACS Catal 2020. [DOI: 10.1021/acscatal.9b03534] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Matthew V. Vollmer
- Department of Chemistry, University of Minnesota−Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jingyun Ye
- Department of Chemistry, University of Minnesota−Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
- Supercomputing Institute, and Chemical Theory Center, University of Minnesota−Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - John C. Linehan
- Catalysis Science Group, Pacific Northwest National Laboratory, P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - Brendan J. Graziano
- Department of Chemistry, University of Minnesota−Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Andrew Preston
- Catalysis Science Group, Pacific Northwest National Laboratory, P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - Eric S. Wiedner
- Catalysis Science Group, Pacific Northwest National Laboratory, P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - Connie C. Lu
- Department of Chemistry, University of Minnesota−Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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