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Luo J, Davenport MT, Callister C, Minteer SD, Ess DH, Liu TL. Understanding Formation and Roles of Ni II Aryl Amido and Ni III Aryl Amido Intermediates in Ni-Catalyzed Electrochemical Aryl Amination Reactions. J Am Chem Soc 2023; 145:16130-16141. [PMID: 37433081 PMCID: PMC10635587 DOI: 10.1021/jacs.3c04610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Ni-catalyzed electrochemical aryl amination (e-amination) is an attractive, emerging approach to building C-N bonds. Here, we report in-depth experimental and computational studies that examined the mechanism of Ni-catalyzed e-amination reactions. Key NiII-amine dibromide and NiII aryl amido intermediates were chemically synthesized and characterized. The combination of experiments and DFT calculations suggest (1) there is coordination of an amine to the NiII catalyst before the cathodic reduction and oxidative addition steps, (2) a stable NiII aryl amido intermediate is produced from the cathodic half-reaction, a critical step in controlling the selectivity between cross-coupling and undesired homo-coupling reaction pathways, (3) the diazabicycloundecene additive shifts the aryl halide oxidative addition mechanism from a NiI-based pathway to a Ni0-based pathway, and (4) redox-active bromide in the supporting electrolyte functions as a redox mediator to promote the oxidation of the stable NiII aryl amido intermediate to a NiIII aryl amido intermediate. Subsequently, the NiIII aryl amido intermediate undergoes facile reductive elimination to provide a C-N cross-coupling product at room temperature. Overall, our results provide new fundamental understandings about this e-amination reaction and guidance for further development of other Ni-catalyzed electrosynthetic reactions such as C-C and C-O cross-couplings.
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Affiliation(s)
- Jian Luo
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Michael T Davenport
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84604, United States
| | - Chad Callister
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Daniel H Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84604, United States
| | - T Leo Liu
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
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2
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A Generalized Ising-like Model for Spin Crossover Nanoparticles. MAGNETOCHEMISTRY 2022. [DOI: 10.3390/magnetochemistry8050049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Cooperative spin crossover (SCO) materials exhibit first-order phase transitions in the solid state, between the high-spin (HS) and low-spin (LS) states. Elastic long-range interactions are the basic mechanism for this particular behavior and are described well by the Ising-like model, which allows the reproduction of most of the experimental results in the literature. Until now, this model has been applied with an interaction parameter between the molecules, which is considered to be independent of the states. In this contribution, we extend the Ising-like model to include interaction energy that depends on the spin states and apply it to study SCO nanoparticles. Our research shows that following this new hypothesis, the equilibrium temperature shifts toward higher values.
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3
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Oliveros R. DA, Machado RA, Mora JR. Quantitative structure–property relationship analysis of the spectrochemical series by employing electronic descriptors from DFT calculations. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2040629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Deivi A. Oliveros R.
- Facultad de Ciencias, Universidad Central de Venezuela, Escuela de Química, Caracas, Venezuela
| | - Rubén A. Machado
- Centro de Química, Laboratorio de Química de Metales de Transición, Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela
| | - José R. Mora
- Grupo de Química Computacional y Teórica, Departamento de Ingeniería Química, Universidad San Francisco de Quito, Instituto de Simulación Computacional, Quito, Ecuador
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4
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Xue S, Solre GFB, Wang X, Wang L, Guo Y. Vapor-triggered reversible crystal transformation of a nickel-based magnetic molecular switch. Chem Commun (Camb) 2022; 58:1954-1957. [PMID: 35043804 DOI: 10.1039/d1cc06076g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vapor-triggered crystal-to-crystal transformation between a discrete trinuclear complex [Ni3(sih)2(py)8] and a two-dimensional (2D) coordination polymer [Ni3(sih)2(py)2]n·2DMF·2H2O was demonstrated. It provides an example of a solid-state coordination-induced spin state switch behavior attributed to the structural phase transition triggered by solvent signal. The reversible nature can be detected by both optical (spectral) and magnetic responses in cycles.
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Affiliation(s)
- Shufang Xue
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Gideon F B Solre
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Xiaoqin Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Liang Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Yunnan Guo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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5
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Zhao Y, Wang L, Xue S, Guo Y. Reversible coordination-induced spin state switching in a nickel( ii) complex via a crystal-to-crystal transformation. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01059c] [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
An unprecedented CISSS behavior driven by a single-crystal-to-single-crystal (SCSC) process is found in a dinuclear nickel(ii) complex, which provides a new strategy for developing external-stimuli molecular magnetic materials.
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Affiliation(s)
- Yaqian Zhao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Liang Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Shufang Xue
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yunnan Guo
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
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6
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Cheng MC, Cheng CH, Chen PJ, Lin TS, Lee GH, Liu YC, Chiang MH, Peng SM. Helical Homometallic Trinickel String Complexes with Mixed Hard Nitrogen and Sulfur Donors: Structural and Magnetic Studies. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210197] [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)
- Ming-Chuan Cheng
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC, 106
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan, ROC, 115
| | - Chien-Hung Cheng
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC, 106
| | - Po-Jung Chen
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC, 106
| | - Tien-Sung Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC, 106
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC, 106
| | - Yu-Chiao Liu
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan, ROC, 115
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan, ROC, 115
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC, 106
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan, ROC, 115
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Mason HE, Musselle-Sexton JRC, Howard JAK, Probert MR, Sparkes HA. Structural studies into the spin crossover behaviour of Fe(abpt) 2(NCS) 2 polymorphs B and D. NEW J CHEM 2021. [DOI: 10.1039/d1nj02607k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Crystallographic analysis of the spin-crossover behaviour of [Fe(abpt)2(NCS)2], polymorph B and D, is presented focusing particularly on the high pressure structures.
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Affiliation(s)
| | | | | | - Michael R. Probert
- Chemistry, School of Natural and Environmental Sciences
- Bedson Building
- Newcastle University
- UK
| | - Hazel A. Sparkes
- Department of Chemistry
- University of Bristol
- Cantock's Close
- Bristol
- UK
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