51
|
Taylor LJ, Kays DL. Low-coordinate first-row transition metal complexes in catalysis and small molecule activation. Dalton Trans 2019; 48:12365-12381. [DOI: 10.1039/c9dt02402f] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this Perspective, we will highlight selected examples of transition metal complexes with low coordination numbers whose high reactivity has been exploited in catalysis and the activation of small molecules featuring strong bonds (N2, CO2, and CO).
Collapse
Affiliation(s)
| | - Deborah L. Kays
- School of Chemistry
- University of Nottingham
- University Park
- Nottingham
- UK
| |
Collapse
|
52
|
Steele A, Benning LG, Wirth R, Siljeström S, Fries MD, Hauri E, Conrad PG, Rogers K, Eigenbrode J, Schreiber A, Needham A, Wang JH, McCubbin FM, Kilcoyne D, Rodriguez Blanco JD. Organic synthesis on Mars by electrochemical reduction of CO 2. SCIENCE ADVANCES 2018; 4:eaat5118. [PMID: 30402538 PMCID: PMC6209388 DOI: 10.1126/sciadv.aat5118] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 09/25/2018] [Indexed: 05/24/2023]
Abstract
The sources and nature of organic carbon on Mars have been a subject of intense research. Steele et al. (2012) showed that 10 martian meteorites contain macromolecular carbon phases contained within pyroxene- and olivine-hosted melt inclusions. Here, we show that martian meteorites Tissint, Nakhla, and NWA 1950 have an inventory of organic carbon species associated with fluid-mineral reactions that are remarkably consistent with those detected by the Mars Science Laboratory (MSL) mission. We advance the hypothesis that interactions among spinel-group minerals, sulfides, and a brine enable the electrochemical reduction of aqueous CO2 to organic molecules. Although documented here in martian samples, a similar process likely occurs wherever igneous rocks containing spinel-group minerals and/or sulfides encounter brines.
Collapse
Affiliation(s)
- A. Steele
- Carnegie Institution for Science, Geophysical Laboratory, Washington, DC 20015, USA
| | - L. G. Benning
- German Research Centre for Geosciences, GFZ, Telegrafenberg, 14473 Potsdam, Germany
- Department of Earth Sciences, Free University of Berlin, 12249 Berlin, Germany
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK
| | - R. Wirth
- German Research Centre for Geosciences, GFZ, Telegrafenberg, 14473 Potsdam, Germany
| | - S. Siljeström
- RISE Research Institutes of Sweden, Bioscience and Materials/Chemistry, Materials and Surfaces, Box 5607, 114 86 Stockholm, Sweden
| | - M. D. Fries
- NASA, Johnson Space Center, Houston, TX 77058, USA
| | - E. Hauri
- Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Rd, Washington, DC 20015, USA
| | - P. G. Conrad
- Carnegie Institution for Science, Geophysical Laboratory, Washington, DC 20015, USA
| | - K. Rogers
- Earth and Environmental Sciences, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA
| | - J. Eigenbrode
- NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
| | - A. Schreiber
- German Research Centre for Geosciences, GFZ, Telegrafenberg, 14473 Potsdam, Germany
| | - A. Needham
- USRA–Science and Technology Institute, 320 Sparkman Drive, Huntsville, AL 35805, USA
| | - J. H. Wang
- Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Rd, Washington, DC 20015, USA
| | | | - D. Kilcoyne
- Advanced Light Source, 1 Cyclotron Road, MS 7R0222, LBNL, Berkeley, CA 94720, USA
| | - Juan Diego Rodriguez Blanco
- School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK
- ICRAG, Department of Geology, Trinity College Dublin, Dublin 2, Ireland
| |
Collapse
|
53
|
Schneck F, Schendzielorz F, Hatami N, Finger M, Würtele C, Schneider S. Photochemically Driven Reverse Water-Gas Shift at Ambient Conditions mediated by a Nickel Pincer Complex. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803396] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Felix Schneck
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Florian Schendzielorz
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Nareh Hatami
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Markus Finger
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Christian Würtele
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Sven Schneider
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| |
Collapse
|
54
|
Schneck F, Schendzielorz F, Hatami N, Finger M, Würtele C, Schneider S. Photochemically Driven Reverse Water-Gas Shift at Ambient Conditions mediated by a Nickel Pincer Complex. Angew Chem Int Ed Engl 2018; 57:14482-14487. [DOI: 10.1002/anie.201803396] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/08/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Felix Schneck
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Florian Schendzielorz
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Nareh Hatami
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Markus Finger
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Christian Würtele
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| | - Sven Schneider
- Georg-August-Universität; Institut für Anorganische Chemie; Tammannstrasse 4 37077 Göttingen Germany
| |
Collapse
|
55
|
The sulfoxidation reaction catalyzed by CoBr 2 complexes, under the magnifying glass of green parameters. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
56
|
Jongbloed LS, Vogt N, Sandleben A, de Bruin B, Klein A, van der Vlugt JI. Nickel-Alkyl Complexes with a Reactive PNC-Pincer Ligand. Eur J Inorg Chem 2018; 2018:2408-2418. [PMID: 29937691 PMCID: PMC6001697 DOI: 10.1002/ejic.201800168] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Indexed: 11/26/2022]
Abstract
Based on previous work related to the design and application of rigid tridentate phosphine-pyridine-phenyl coordination offered by a PNC-pincer ligand upon cyclometalation to nickel, the synthesis, spectroscopic and solid state characterization and redox-reactivity of two NiII(PNC) complexes featuring either a methyl (2CH3 ) or CF3 co-ligand (2CF3 ) are described. One-electron oxidation is proposed to furnish C-C reductive elimination, as deduced from a combined chemical, electrochemical, spectroscopic and computational study. One-electron reduction results in a ligand-centered radical anion, as supported by electrochemistry, UV spectroelectrochemistry, EPR spectroscopy, and DFT calculations. This further attenuates the breadth of chemical reactivity offered by such PNC-pincer ligands.
Collapse
Affiliation(s)
- Linda S. Jongbloed
- Homogeneous, Bioinspired and Supramolecular Catalysis, van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Nicolas Vogt
- Department für ChemieInstitut für Anorganische ChemieUniversität zu KölnGreinstraße 650939KölnGermany
| | - Aaron Sandleben
- Department für ChemieInstitut für Anorganische ChemieUniversität zu KölnGreinstraße 650939KölnGermany
| | - Bas de Bruin
- Homogeneous, Bioinspired and Supramolecular Catalysis, van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Axel Klein
- Department für ChemieInstitut für Anorganische ChemieUniversität zu KölnGreinstraße 650939KölnGermany
| | - Jarl Ivar van der Vlugt
- Homogeneous, Bioinspired and Supramolecular Catalysis, van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| |
Collapse
|
57
|
Stabilization of β-Diketiminato Nickel(I) with Alkaline Metal Halide Entities for Small Molecule Activation. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
58
|
Zimmermann P, Hoof S, Braun-Cula B, Herwig C, Limberg C. A Biomimetic Nickel Complex with a Reduced CO2
Ligand Generated by Formate Deprotonation and Its Behaviour towards CO2. Angew Chem Int Ed Engl 2018; 57:7230-7233. [DOI: 10.1002/anie.201802655] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Philipp Zimmermann
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Santina Hoof
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Christian Herwig
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Christian Limberg
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Germany
| |
Collapse
|
59
|
Zimmermann P, Hoof S, Braun-Cula B, Herwig C, Limberg C. Ein biomimetischer Nickelkomplex mit einem reduzierten, durch Formiatdeprotonierung erzeugten CO2
-Liganden und sein Verhalten gegenüber CO2. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802655] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Philipp Zimmermann
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Santina Hoof
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Beatrice Braun-Cula
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Christian Herwig
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| | - Christian Limberg
- Humboldt-Universität zu Berlin; Institut für Chemie; Brook-Taylor-Straße 2 12489 Berlin Deutschland
| |
Collapse
|
60
|
Beattie DD, Lascoumettes G, Kennepohl P, Love JA, Schafer LL. Disproportionation Reactions of an Organometallic Ni(I) Amidate Complex: Scope and Mechanistic Investigations. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00074] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- D. Dawson Beattie
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Gautier Lascoumettes
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Pierre Kennepohl
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Jennifer A. Love
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Laurel L. Schafer
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| |
Collapse
|
61
|
Singh V, Sakaki S, Deshmukh MM. Ni(I)-Hydride Catalyst for Hydrosilylation of Carbon Dioxide and Dihydrogen Generation: Theoretical Prediction and Exploration of Full Catalytic Cycle. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00011] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vijay Singh
- Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar 470003, India
| | - Shigeyoshi Sakaki
- Fukui Institute for Fundamental Chemistry, Kyoto University, Nishihiraki-cho, Sakyo-ku, Takano, Kyoto 606-8103, Japan
| | - Milind M. Deshmukh
- Department of Chemistry, Dr. Harisingh Gour Vishwavidyalaya (A Central University), Sagar 470003, India
| |
Collapse
|
62
|
Duan PC, Manz DH, Dechert S, Demeshko S, Meyer F. Reductive O2 Binding at a Dihydride Complex Leading to Redox Interconvertible μ-1,2-Peroxo and μ-1,2-Superoxo Dinickel(II) Intermediates. J Am Chem Soc 2018; 140:4929-4939. [DOI: 10.1021/jacs.8b01468] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
63
|
The elusive abnormal CO 2 insertion enabled by metal-ligand cooperative photochemical selectivity inversion. Nat Commun 2018; 9:1161. [PMID: 29563551 PMCID: PMC5862843 DOI: 10.1038/s41467-018-03239-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/29/2018] [Indexed: 12/22/2022] Open
Abstract
Direct hydrogenation of CO2 to CO, the reverse water–gas shift reaction, is an attractive route to CO2 utilization. However, the use of molecular catalysts is impeded by the general reactivity of metal hydrides with CO2. Insertion into M–H bonds results in formates (MO(O)CH), whereas the abnormal insertion to the hydroxycarbonyl isomer (MC(O)OH), which is the key intermediate for CO-selective catalysis, has never been directly observed. We here report that the selectivity of CO2 insertion into a Ni–H bond can be inverted from normal to abnormal insertion upon switching from thermal to photochemical conditions. Mechanistic examination for abnormal insertion indicates photochemical N–H reductive elimination as the pivotal step that leads to an umpolung of the hydride ligand. This study conceptually introduces metal-ligand cooperation for selectivity control in photochemical transformations. The development of molecular catalysts for the reverse water–gas shift reaction is impeded by the general selectivity of CO2 insertion into M–H bonds to formates. Here, the authors report that the selectivity of CO2 insertion into a Ni–H bond can be inverted from normal to abnormal insertion upon switching from thermal to photochemical conditions.
Collapse
|
64
|
Zhang T, Zhang X, Chung LW. Computational Insights into the Reaction Mechanisms of Nickel-Catalyzed Hydrofunctionalizations and Nickel-Dependent Enzymes. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700645] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tonghuan Zhang
- Department of Chemistry; South University of Science and Technology of China (SUSTech); Shenzhen 518055 China
- Lab of Computational Chemistry and Drug Design; Key Laboratory of Chemical Genomics; Peking University Shenzhen Graduate School; Shenzhen 518055 China
| | - Xiaoyong Zhang
- Department of Chemistry; South University of Science and Technology of China (SUSTech); Shenzhen 518055 China
| | - Lung Wa Chung
- Department of Chemistry; South University of Science and Technology of China (SUSTech); Shenzhen 518055 China
| |
Collapse
|
65
|
Mohadjer Beromi M, Banerjee G, Brudvig GW, Hazari N, Mercado BQ. Nickel(I) Aryl Species: Synthesis, Properties, and Catalytic Activity. ACS Catal 2018; 8:2526-2533. [PMID: 30250755 DOI: 10.1021/acscatal.8b00546] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, Ni(I) aryl species that are directly relevant to cross-coupling have been synthesized. Transmetalation of (dppf)NiIX (dppf = 1,1'-bis(diphenylphosphino)-ferrocene, X = Cl, Br) with aryl Grignard reagents or aryl boronic acids in the presence of base produces Ni(I) aryl species of the form (dppf)NiI(Ar) (Ar = Ph, o-tolyl, 2,6-xylyl, 2,4,6-mesityl, 2,4,6-iPr3C6H2). The stability of the Ni(I) aryl species is inversely correlated to the steric bulk on the aryl ligand. The most unstable Ni(I) aryl species are the most active precatalysts for Suzuki-Miyaura reactions because they rapidly decompose to generate the active Ni(0) catalyst. This study shows that Ni(I) aryl species are initially formed in the activation of Ni(I) halide precatalysts for Suzuki-Miyaura reactions and establishes their stoichiometric and catalytic reactivity profile.
Collapse
Affiliation(s)
- Megan Mohadjer Beromi
- The Department of Chemistry, Yale University, P.O.
Box 208107, New Haven, Connecticut 06520, United States
| | - Gourab Banerjee
- The Department of Chemistry, Yale University, P.O.
Box 208107, New Haven, Connecticut 06520, United States
| | - Gary W. Brudvig
- The Department of Chemistry, Yale University, P.O.
Box 208107, New Haven, Connecticut 06520, United States
| | - Nilay Hazari
- The Department of Chemistry, Yale University, P.O.
Box 208107, New Haven, Connecticut 06520, United States
| | - Brandon Q. Mercado
- The Department of Chemistry, Yale University, P.O.
Box 208107, New Haven, Connecticut 06520, United States
| |
Collapse
|
66
|
Quirós MT, Collado-Sanz D, Buñuel E, Cárdenas DJ. Ligand-Controlled Electron Structure of Catalytically Active Ni Complexes. J Phys Chem A 2018; 122:2250-2257. [PMID: 29442504 DOI: 10.1021/acs.jpca.7b11713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have performed a systematic study of the electron structure of a series of Ni(I) and Ni(II) iodo and methyl complexes with a variety of di- and tridentate nitrogen ligands to study the influence of these ligands in the structure of catalytically active complexes in cross-coupling reactions. Ni(II) compounds show the expected square-planar configuration typical of complexes of d8 metals, regardless of the kind of coordinating nitrogen atom (sp2 or sp3) found in ligands derived from either trialkylamines or pyridines. In contrast, Ni(I) complexes show different structures. Thus, the absence of orbitals capable of delocalizing the unpaired electron (such as in TMEDA and PMDTA derivatives) leads to nonplanar iodo or methyl tetracoordinate complexes. In contrast, the presence of ligands derived from pyridine allows delocalization of the unpaired electron on the ligand. This delocalization is especially effective for terpyridine species.
Collapse
Affiliation(s)
- M Teresa Quirós
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Institute for Advanced Research in Chemical Sciences (IAdChem) , Av. Francisco Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| | - Daniel Collado-Sanz
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Institute for Advanced Research in Chemical Sciences (IAdChem) , Av. Francisco Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| | - Elena Buñuel
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Institute for Advanced Research in Chemical Sciences (IAdChem) , Av. Francisco Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| | - Diego J Cárdenas
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Institute for Advanced Research in Chemical Sciences (IAdChem) , Av. Francisco Tomás y Valiente 7, Cantoblanco, 28049 Madrid, Spain
| |
Collapse
|
67
|
Dinuclear Nickel(I) and Palladium(I) Complexes for Highly Active Transformations of Organic Compounds. Molecules 2018; 23:molecules23010140. [PMID: 29324677 PMCID: PMC6017577 DOI: 10.3390/molecules23010140] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 11/23/2022] Open
Abstract
In typical catalytic organic transformations, transition metals in catalytically active complexes are present in their most stable valence states, such as palladium(0) and (II). However, some dimeric monovalent metal complexes can be stabilized by auxiliary ligands to form diamagnetic compounds with metal–metal bonding interactions. These diamagnetic compounds can act as catalysts while retaining their dimeric forms, split homolytically or heterolytically into monomeric forms, which usually have high activity, or in contrast, become completely deactivated as catalysts. Recently, many studies using group 10 metal complexes containing nickel and palladium have demonstrated that under specific conditions, the active forms of these catalyst precursors are not mononuclear zerovalent complexes, but instead dinuclear monovalent metal complexes. In this mini-review, we have surveyed the preparation, reactivity, and the catalytic processes of dinuclear nickel(I) and palladium(I) complexes, focusing on mechanistic insights into the precatalyst activation systems and the structure and behavior of nickel and palladium intermediates.
Collapse
|
68
|
Behnke SL, Manesis AC, Shafaat HS. Spectroelectrochemical investigations of nickel cyclam indicate different reaction mechanisms for electrocatalytic CO2 and H+ reduction. Dalton Trans 2018; 47:15206-15216. [DOI: 10.1039/c8dt02873g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Characterization of a NiIII species during reductive catalysis by [Ni(cyclam)]2+ implicates an ECCE mechanism for hydrogen production in aqueous solution.
Collapse
Affiliation(s)
- Shelby L. Behnke
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | | | - Hannah S. Shafaat
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
- Ohio State Biochemistry Program
| |
Collapse
|
69
|
Yang JM, Zhu YH, Chen S, Lu X, Wu YM, Ma FE, Li LP, Yang Y, Shi ZH, Huang KY, Hong X, Jiang P, Peng Y. A β-carboline derivative-based nickel(ii) complex as a potential antitumor agent: synthesis, characterization, and cytotoxicity. MEDCHEMCOMM 2018; 9:100-107. [PMID: 30108903 PMCID: PMC6072409 DOI: 10.1039/c7md00428a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 11/03/2017] [Indexed: 11/21/2022]
Abstract
A novel nickel(ii) complex of 6-methoxy-1-pyridine-β-carboline (4a) was synthesized and characterized. The cytotoxicities of the complex towards six cancer cell lines, including MGC-803, Hep G2, T24, OS-RC-2, NCI-H460, and SK-OV-3, and human normal liver cell line HL-7702 were investigated. The IC50 values for MGC-803, Hep G2, T24, OS-RC-2, NCI-H460 and SK-OV-3 were generally in the micromolar range (3.77-15.10 μM), lower than those of ligand 4 and cisplatin. Furthermore, 4a (6 μM) significantly induced cell cycle arrest at the S phase, and caused the down-regulation of p-AKT, cyclin E, cyclin A and CDK2 and the up-regulation of p27. Various experiments showed that 4a induced apoptosis, activated caspase-3, increased the levels of reactive oxygen species (ROS) and enhanced the intracellular [Ca2+]c levels in MGC-803. In addition, the expression of intrinsic apoptotic proteins, including cytochrome c and apaf-1, increased. Further intrinsic apoptosis was triggered via executive molecular caspase-9 and caspase-3. In short, 4a exerted its cytotoxic activity primarily through inducing cell cycle arrest at the S phase and intrinsic apoptosis.
Collapse
Affiliation(s)
- Jing-Mei Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Yan-Hong Zhu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Sheng Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Xing Lu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Yi-Ming Wu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Feng-E Ma
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Liang-Ping Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Yang Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Zhen-Hao Shi
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Kun-Yuan Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Xue Hong
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| | - Ping Jiang
- Shanghai Mental Health Center , Shanghai Institute of Mental Health , Shanghai Jiao Tong University School of Medicine , 600 Wan Ping Nan Road , Shanghai 200030 , P.R. China . ; ; Tel: +86 21 64387250
| | - Yan Peng
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , No. 15 Yucai Road , Guilin 541004 , China . ; ; Tel: +86 773 2120958
| |
Collapse
|
70
|
Koch F, Berkefeld A. Reactant or reagent? Oxidation of H2 at electronically distinct nickel-thiolate sites [Ni2(μ-SR)2]+ and [Ni–SR]+. Dalton Trans 2018; 47:10561-10568. [DOI: 10.1039/c8dt00275d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The chemical bond between a Lewis-acidic metal and a Brønsted/Lewis-basic sulphur donor provides M–S structures with functional properties that are relevant for a variety of processes such as the heterolytic cleavage of H2.
Collapse
Affiliation(s)
- Felix Koch
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
| | - Andreas Berkefeld
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
| |
Collapse
|
71
|
Blackaby WJM, Sabater S, Poulten RC, Page MJ, Folli A, Krewald V, Mahon MF, Murphy DM, Richards E, Whittlesey MK. Mono- and dinuclear Ni(i) products formed upon bromide abstraction from the Ni(i) ring-expanded NHC complex [Ni(6-Mes)(PPh3)Br]. Dalton Trans 2018; 47:769-782. [DOI: 10.1039/c7dt04187j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
New T- and Y-shaped Ni(i) complexes are reported and analysed by DFT and EPR.
Collapse
Affiliation(s)
| | - Sara Sabater
- Department of Chemistry
- University of Bath
- Claverton Down
- UK
| | | | | | - Andrea Folli
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
| | - Vera Krewald
- Department of Chemistry
- University of Bath
- Claverton Down
- UK
| | - Mary F. Mahon
- Department of Chemistry
- University of Bath
- Claverton Down
- UK
| | | | - Emma Richards
- School of Chemistry
- Cardiff University
- Cardiff CF10 3AT
- UK
| | | |
Collapse
|
72
|
Schwab MM, Himmel D, Kacprzak S, Radtke V, Kratzert D, Weis P, Wernet M, Peter A, Yassine Z, Schmitz D, Scheidt EW, Scherer W, Weber S, Feuerstein W, Breher F, Higelin A, Krossing I. Synthesis, Characterisation and Reactions of Truly Cationic Ni I -Phosphine Complexes. Chemistry 2017; 24:918-927. [PMID: 29155467 DOI: 10.1002/chem.201704436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 11/07/2022]
Abstract
The recently published purely metallo-organic NiI salt [Ni(cod)2 ][Al(ORF )4 ] (1, cod=1,5-cyclooctadiene, RF =C(CF3 )3 ) provides a starting point for a new synthesis strategy leading to NiI phosphine complexes, replacing cod ligands by phosphines. Clearly visible colour changes indicate reactions within minutes, while quantum chemical calculations (PBE0-D3(BJ)/def2-TZVPP) approve exergonic reaction enthalpies in all performed ligand exchange reactions. Hence, [Ni(dppp)2 ][Al(ORF )4 ] (2, dppp=1,3-bis(diphenylphosphino)propane), [Ni(dppe)2 ][Al(ORF )4 ] (3, dppe=1,3-bis(diphenyl-phosphino)ethane), three-coordinate [Ni(PPh3 )3 ][Al(ORF )4 ] (4) and a remarkable two-coordinate NiI phosphine complex [Ni(PtBu3 )2 ][Al(ORF )4 ] (5) were characterised by single crystal X-ray structure analysis. EPR studies were performed, confirming a nickel d9 -configuration in complexes 2, 4 and 5. This result is supported by additional magnetization measurements of 4 and 5. Further investigations by cyclic voltammetry indicate relatively high oxidation potentials for these NiI compounds between 0.7 and 1.7 V versus Fc/Fc+ . Screening reactions with O2 and CO gave first insights on the reaction behaviour of the NiI phosphine complexes towards small molecules with formation of mixed phosphine-CO-NiI complexes and oxidation processes yielding new NiI and/or NiII derivatives. Moreover, 4 reacted with CH2 Cl2 at RT to give a dimeric NiII ylide complex (4 c). As CH2 Cl2 is a rather stable alkyl halide with relatively high C-Cl bond energies, 4 appears to be a suitable reagent for more general C-Cl bond activation reactions.
Collapse
Affiliation(s)
- Miriam Mareen Schwab
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Daniel Himmel
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Sylwia Kacprzak
- Institut für Physikalische Chemie, Universität Freiburg, Albertstraße 21, 79104, Freiburg, Germany
| | - Valentin Radtke
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Daniel Kratzert
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Philippe Weis
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Melanie Wernet
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Andreas Peter
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Zeinab Yassine
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Dominik Schmitz
- Institut für Physik, Universität Augsburg, Universitätsstraße 1, 86159, Augsburg, Germany
| | - Ernst-Wilhelm Scheidt
- Institut für Physik, Universität Augsburg, Universitätsstraße 1, 86159, Augsburg, Germany
| | - Wolfgang Scherer
- Institut für Physik, Universität Augsburg, Universitätsstraße 1, 86159, Augsburg, Germany
| | - Stefan Weber
- Institut für Physikalische Chemie, Universität Freiburg, Albertstraße 21, 79104, Freiburg, Germany.,Freiburg Institute for Advanced Studies (FRIAS), Albertstr. 19, 79104, Freiburg, Germany
| | - Wolfram Feuerstein
- Division Molecular Chemistry, Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr 15, 76131, Karlsruhe, Germany
| | - Frank Breher
- Division Molecular Chemistry, Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr 15, 76131, Karlsruhe, Germany
| | - Alexander Higelin
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie, Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Straße 21, 79104, Freiburg, Germany
| |
Collapse
|
73
|
Schwab MM, Himmel D, Kacprzak S, Radtke V, Kratzert D, Yassine Z, Weis P, Weber S, Krossing I. Reactivity of [Ni(cod)2][Al(ORF)4] towards Small Molecules and Elements. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Miriam M. Schwab
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| | - Daniel Himmel
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| | - Sylwia Kacprzak
- Institut für Physikalische Chemie; Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Valentin Radtke
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| | - Daniel Kratzert
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| | - Zeinab Yassine
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| | - Philippe Weis
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| | - Stefan Weber
- Institut für Physikalische Chemie; Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
| | - Ingo Krossing
- Institut für Anorganische und Analytische Chemie; Freiburger Materialforschungszentrum (FMF); Universität Freiburg; Stefan-Meier-Straße 21 79104 Freiburg Germany
| |
Collapse
|
74
|
Cammarota RC, Vollmer MV, Xie J, Ye J, Linehan JC, Burgess SA, Appel AM, Gagliardi L, Lu CC. A Bimetallic Nickel-Gallium Complex Catalyzes CO 2 Hydrogenation via the Intermediacy of an Anionic d 10 Nickel Hydride. J Am Chem Soc 2017; 139:14244-14250. [PMID: 28898066 DOI: 10.1021/jacs.7b07911] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Large-scale CO2 hydrogenation could offer a renewable stream of industrially important C1 chemicals while reducing CO2 emissions. Critical to this opportunity is the requirement for inexpensive catalysts based on earth-abundant metals instead of precious metals. We report a nickel-gallium complex featuring a Ni(0)→Ga(III) bond that shows remarkable catalytic activity for hydrogenating CO2 to formate at ambient temperature (3150 turnovers, turnover frequency = 9700 h-1), compared with prior homogeneous Ni-centered catalysts. The Lewis acidic Ga(III) ion plays a pivotal role in stabilizing catalytic intermediates, including a rare anionic d10 Ni hydride. Structural and in situ characterization of this reactive intermediate support a terminal Ni-H moiety, for which the thermodynamic hydride donor strength rivals those of precious metal hydrides. Collectively, our experimental and computational results demonstrate that modulating a transition metal center via a direct interaction with a Lewis acidic support can be a powerful strategy for promoting new reactivity paradigms in base-metal catalysis.
Collapse
Affiliation(s)
- Ryan C Cammarota
- Department of Chemistry, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Matthew V Vollmer
- Department of Chemistry, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Jing Xie
- Department of Chemistry, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States.,Supercomputing Institute and Chemical Theory Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Jingyun Ye
- Department of Chemistry, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States.,Supercomputing Institute and Chemical Theory Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - John C Linehan
- Pacific Northwest National Laboratory , P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - Samantha A Burgess
- Pacific Northwest National Laboratory , P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - Aaron M Appel
- Pacific Northwest National Laboratory , P.O. Box 999, MS K2-57, Richland, Washington 99352, United States
| | - Laura Gagliardi
- Department of Chemistry, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States.,Supercomputing Institute and Chemical Theory Center, University of Minnesota , Minneapolis, Minnesota 55455, United States
| | - Connie C Lu
- Department of Chemistry, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
75
|
Zhang A, Raje S, Liu J, Li X, Angamuthu R, Tung CH, Wang W. Nickel-Mediated Stepwise Transformation of CO to Acetaldehyde and Ethanol. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00472] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ailing Zhang
- School
of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Jinan 250100, China
| | - Sakthi Raje
- Laboratory
of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jianguo Liu
- School
of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Jinan 250100, China
| | - Xiaoyan Li
- School
of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Jinan 250100, China
| | - Raja Angamuthu
- Laboratory
of Inorganic Synthesis and Bioinspired Catalysis (LISBIC), Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Chen-Ho Tung
- School
of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Jinan 250100, China
| | - Wenguang Wang
- School
of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Jinan 250100, China
| |
Collapse
|
76
|
Manesis AC, O'Connor MJ, Schneider CR, Shafaat HS. Multielectron Chemistry within a Model Nickel Metalloprotein: Mechanistic Implications for Acetyl-CoA Synthase. J Am Chem Soc 2017; 139:10328-10338. [PMID: 28675928 DOI: 10.1021/jacs.7b03892] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The acetyl coenzyme A synthase (ACS) enzyme plays a central role in the metabolism of anaerobic bacteria and archaea, catalyzing the reversible synthesis of acetyl-CoA from CO and a methyl group through a series of nickel-based organometallic intermediates. Owing to the extreme complexity of the native enzyme systems, the mechanism by which this catalysis occurs remains poorly understood. In this work, we have developed a protein-based model for the NiP center of acetyl coenzyme A synthase using a nickel-substituted azurin protein (NiAz). NiAz is the first model nickel protein system capable of accessing three (NiI/NiII/NiIII) distinct oxidation states within a physiological potential range in aqueous solution, a critical feature for achieving organometallic ACS activity, and binds CO and -CH3 groups with biologically relevant affinity. Characterization of the NiI-CO species through spectroscopic and computational techniques reveals fundamentally similar features between the model NiAz system and the native ACS enzyme, highlighting the potential for related reactivity in this model protein. This work provides insight into the enzymatic process, with implications toward engineering biological catalysts for organometallic processes.
Collapse
Affiliation(s)
- Anastasia C Manesis
- The Ohio State University , 100 West 18th Avenue, Newman & Wolfrom Laboratory of Chemistry, Columbus, Ohio 43210, United States
| | - Matthew J O'Connor
- The Ohio State University , 100 West 18th Avenue, Newman & Wolfrom Laboratory of Chemistry, Columbus, Ohio 43210, United States
| | - Camille R Schneider
- The Ohio State University , 100 West 18th Avenue, Newman & Wolfrom Laboratory of Chemistry, Columbus, Ohio 43210, United States
| | - Hannah S Shafaat
- The Ohio State University , 100 West 18th Avenue, Newman & Wolfrom Laboratory of Chemistry, Columbus, Ohio 43210, United States
| |
Collapse
|
77
|
Yoo C, Lee Y. A T-Shaped Nickel(I) Metalloradical Species. Angew Chem Int Ed Engl 2017; 56:9502-9506. [PMID: 28556527 DOI: 10.1002/anie.201704487] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 12/11/2022]
Abstract
A T-shaped NiI complex was synthesized using a rigid acridane-based pincer ligand to prepare a metalloradical center. Structural data displays a nickel ion is embedded in the plane of a PNP ligand. Having a sterically exposed half-filled dx2-y2 orbital, this three-coordinate NiI species reveals unique open-shell reactivity including the homolytic cleavage of various σ-bonds, such as H-H, N-N, and C-C.
Collapse
Affiliation(s)
- Changho Yoo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Yunho Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| |
Collapse
|
78
|
Affiliation(s)
- Changho Yoo
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| | - Yunho Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu Daejeon 34141 Republic of Korea
| |
Collapse
|
79
|
Adler C, Diekmann M, Schmidtmann M, Beckhaus R. Activation of Molecular Hydrogen by Bis(η5
,η1
-pentafulvene)-titanium Complexes - Efficient Formation of Titanium(III)hydrides. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700095] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christian Adler
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; Postfach 2503 26111 Oldenburg Germany
| | - Mira Diekmann
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; Postfach 2503 26111 Oldenburg Germany
| | - Marc Schmidtmann
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; Postfach 2503 26111 Oldenburg Germany
| | - Rüdiger Beckhaus
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; Postfach 2503 26111 Oldenburg Germany
| |
Collapse
|
80
|
Lin CY, Power PP. Complexes of Ni(i): a “rare” oxidation state of growing importance. Chem Soc Rev 2017; 46:5347-5399. [DOI: 10.1039/c7cs00216e] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The synthesis and diverse structures, reactivity (small molecule activation and catalysis) and magnetic properties of Ni(i) complexes are summarized.
Collapse
Affiliation(s)
- Chun-Yi Lin
- Department of Chemistry
- University of California
- Davis
- USA
| | | |
Collapse
|