1
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Pincer complex immobilization onto different supports: Strategies and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214778] [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]
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2
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Laird M, Herrmann N, Carcel C, Trens P, Oliviero E, Toquer G, Le Parc R, Bantignies JL, Bartlett JR, Wong Chi Man M. Mesoporous organosilicas with thiol functionalised pores: multifunctional dendrimers as sacrificial building block and template. NANOSCALE 2022; 14:15617-15634. [PMID: 36070553 DOI: 10.1039/d2nr03097g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The synthesis of multifunctional poly(amidoamine) (PAMAM)-based dendrimers containing a cleavable disulfide linker within each arm of the dendrimer, together with condensable triethoxysilyl groups on the periphery of the dendrimer, is described. The dendrimers were mixed with 1,4-bis(triethoxysilyl)benzene and subsequently transformed into silsesquioxane gels or periodic mesoporous organosilicas (PMOs) to generate materials with dendrimers covalently embedded within the interior of the silsesquioxane networks. Subsequent treatment of the gels with dithiothreitol enabled the core of the dendrimers to be selectively cleaved at the disulfide site, thus generating thiol functions localised within the pores. The effect of different dendrimer generations on the reactivity of the pendant thiol functions was probed by impregnation with gold salts, which were reduced to obtain gold nanoparticles within the pore networks of the gels and PMOs. The gels yielded polydisperse gold nanoparticles (2 to 70 nm) with dimensions modulated by the generation of the dendrimer, together with well-defined gold/thiolate clusters with Au⋯S distances of 2.3 Å. Such clusters were also observed in the PMO system, together with monodispersed gold nanoparticles with diameters comparable to that of the organised pores in the PMO. The role of surface functionalisation in controlling the formation of gold clusters and/or nanoparticles is discussed.
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Affiliation(s)
- Mathilde Laird
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | - Carole Carcel
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | - Philippe Trens
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France.
| | | | | | - Rozenn Le Parc
- Laboratoire Charles Coulomb (L2C), CNRS-Univ. Montpellier, Montpellier, France
| | | | - John R Bartlett
- Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
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3
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Cloutier JP, Zamani F, Zargarian D. Aerobic oxidation-functionalization of the aryl moiety in van Koten's pincer complex (NCN)Ni( ii)Br: relevance to carbon–heteroatom coupling reactions promoted by high-valent nickel species. NEW J CHEM 2022. [DOI: 10.1039/d1nj05162h] [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
Treating the pincer complex (NCN)NiBr with protic substrates HX (X = OH, OR, or NR2) under aerobic conditions leads to C–X functionalization of the pincer ligand. The crucial importance of aerobic conditions for the success of this coupling reaction implies the formation of high-valent intermediates during the course of the reaction.
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Affiliation(s)
| | - Fahimeh Zamani
- Département de chimie, Université de Montréal, Montréal (Québec), H3C 3J7, Canada
| | - Davit Zargarian
- Département de chimie, Université de Montréal, Montréal (Québec), H3C 3J7, Canada
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4
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Na H, Watson MB, Tang F, Rath NP, Mirica LM. Photoreductive chlorine elimination from a Ni(iii)Cl 2 complex supported by a tetradentate pyridinophane ligand. Chem Commun (Camb) 2021; 57:7264-7267. [PMID: 34195702 DOI: 10.1039/d1cc02114a] [Citation(s) in RCA: 3] [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 report the isolation, characterization, and photoreactivity of a stable NiIII dichloride complex supported by a tetradentate pyridinophane N-donor ligand. Upon irradiation, this complex undergoes an efficient photoreductive chlorine elimination reaction, both in solution and the solid-state. Subsequently, the NiIIICl2 species can be regenerated via a reaction with PhICl2.
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Affiliation(s)
- Hanah Na
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
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5
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Mangin LP, Michaud G, Zargarian D. A Wacker-Type Strategy for the Synthesis of Unsymmetrical POC sp3E-Nickel Pincer Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Loïc P. Mangin
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Guillaume Michaud
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Davit Zargarian
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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Nebra N. High-Valent Ni III and Ni IV Species Relevant to C-C and C-Heteroatom Cross-Coupling Reactions: State of the Art. Molecules 2020; 25:molecules25051141. [PMID: 32143336 PMCID: PMC7179250 DOI: 10.3390/molecules25051141] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 11/16/2022] Open
Abstract
Ni catalysis constitutes an active research arena with notable applications in diverse fields. By analogy with its parent element palladium, Ni catalysts provide an appealing entry to build molecular complexity via cross-coupling reactions. While Pd catalysts typically involve a M0/MII redox scenario, in the case of Ni congeners the mechanistic elucidation becomes more challenging due to their innate properties (like enhanced reactivity, propensity to undergo single electron transformations vs. 2e− redox sequences or weaker M–Ligand interaction). In recent years, mechanistic studies have demonstrated the participation of high-valent NiIII and NiIV species in a plethora of cross-coupling events, thus accessing novel synthetic schemes and unprecedented transformations. This comprehensive review collects the main contributions effected within this topic, and focuses on the key role of isolated and/or spectroscopically identified NiIII and NiIV complexes. Amongst other transformations, the resulting NiIII and NiIV compounds have efficiently accomplished: i) C–C and C–heteroatom bond formation; ii) C–H bond functionalization; and iii) N–N and C–N cyclizative couplings to forge heterocycles.
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Affiliation(s)
- Noel Nebra
- Laboratoire Hétérochimie Fondamentale et Appliquée, Université Paul Sabatier/CNRS UMR 5069, 118 Route de Narbonne, 31062 Toulouse, France
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Viñas C, Núñez R, Bennour I, Teixidor F. Periphery Decorated and Core Initiated Neutral and Polyanionic Borane Large Molecules: Forthcoming and Promising Properties for Medicinal Applications. Curr Med Chem 2019; 26:5036-5076. [PMID: 31161983 DOI: 10.2174/0929867326666190603123838] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/13/2018] [Accepted: 08/15/2018] [Indexed: 11/22/2022]
Abstract
A mini-review based on radial growing macromolecules and core initiated Borane
periphery decorated with o-carboranes and metallacarboranes that has been developed in the
authors laboratories is reported. The review is divided into four sections; three of them are
related to the design and synthesis of these large boron-containing molecules and the fourth
deals with the unique properties of anionic metallacarborane molecules that provide a glimpse
of their potential for their promising use in medicinal applications. Their unique stability
along with their geometrical and electronic properties, as well as the precise steric structure of
1,2-closo-C2B10H12 (o-carborane) that has the potential for the incorporation of many substituents:
at the carbon (Cc), at the boron and at both carbon and boron vertices, suggests this
cluster as an innovative building block or platform for novel applications that cannot be
achieved with organic hydrocarbon compounds. Poly(aryl-ether) dendrimers grown from
fluorescent cores, such as 1,3,5-triarylbenzene or meso-porphyrins, have been decorated with
boron clusters to attain rich boron containing dendrimers. Octasilsesquioxane cubes have been
used as a core for its radial growth to get boron-rich large molecules. The unique properties of
cobaltabisdicarbollide cluster, which include: i) self-assembly in water to produce monolayer
nano-vesicles, ii) crossing lipid bilayer membranes, iii) interacting with membrane cells, iv)
facilitating its visualization within cells by Raman and fluorescence techniques and v) their
use as molecular platform for “in vivo” imaging are discussed in detail.
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Affiliation(s)
- Clara Viñas
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC). Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Rosario Núñez
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC). Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Ines Bennour
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC). Campus UAB, 08193 Bellaterra, Barcelona, Spain
| | - Francesc Teixidor
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC). Campus UAB, 08193 Bellaterra, Barcelona, Spain
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Das K, Dutta M, Das B, Srivastava HK, Kumar A. Efficient Pincer‐Ruthenium Catalysts for Kharasch Addition of Carbon Tetrachloride to Styrene. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900107] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kanu Das
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039, Assam India
| | - Moumita Dutta
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039, Assam India
| | - Babulal Das
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039, Assam India
| | - Hemant Kumar Srivastava
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039, Assam India
| | - Akshai Kumar
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039, Assam India
- Center for NanotechnologyIndian Institute of Technology Guwahati Guwahati- 781039, Assam India
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9
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Kai W, Qian H, Liu D, Ye Z. NCN-Pincer palladium complexes immobilized on MCM-41 molecular sieve: Application in α-arylation reactions. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Gafurov ZN, Kagilev AA, Kantyukov AO, Balabaev AA, Sinyashin OG, Yakhvarov DG. Classification and synthesis of nickel pincer complexes. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2086-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Cloutier JP, Zargarian D. Functionalization of the Aryl Moiety in the Pincer Complex (NCN)NiIIIBr2: Insights on NiIII-Promoted Carbon–Heteroatom Coupling. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00103] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Davit Zargarian
- Département de chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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12
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13
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Valdés H, González-Sebastián L, Morales-Morales D. Aromatic para-functionalized NCN pincer compounds. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.034] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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14
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Nishiyama H, Ikeda H, Saito T, Kriegel B, Tsurugi H, Arnold J, Mashima K. Structural and Electronic Noninnocence of α-Diimine Ligands on Niobium for Reductive C-Cl Bond Activation and Catalytic Radical Addition Reactions. J Am Chem Soc 2017; 139:6494-6505. [PMID: 28409626 DOI: 10.1021/jacs.7b02710] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A d0 niobium(V) complex, NbCl3(α-diimine) (1a), supported by a dianionic redox-active N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-2,3-dimethyl-1,3-butadiene (α-diimine) ligand (ene-diamido ligand) served as a catalyst for radical addition reactions of CCl4 to α-olefins and cyclic alkenes, selectively affording 1:1 radical addition products in a regioselective manner. During the catalytic reaction, the α-diimine ligand smoothly released and stored an electron to control the oxidation state of the niobium center by changing between an η4-(σ2,π) coordination mode with a folded MN2C2 metallacycle and a κ2-(N,N') coordination mode with a planar MN2C2 metallacycle. Kinetic studies of the catalytic reaction elucidated the reaction order in the catalytic cycle: the radical addition reaction rate obeyed first-order kinetics that were dependent on the concentrations of the catalyst, styrene, and CCl4, while a saturation effect was observed at a high CCl4 concentration. In the presence of excess amounts of styrene, styrene coordinated in an η2-olefinic manner to the niobium center to decrease the reaction rate. No observation of oligomers or polymers of styrene and high stereoselectivity for the radical addition reaction of CCl4 to cyclopentene suggested that the C-C bond formation proceeded inside the coordination sphere of niobium, which was in good accordance with the negative entropy value of the radical addition reaction. Furthermore, reaction of 1a with (bromomethyl)cyclopropane confirmed that both the C-Br bond activation and formation proceeded on the α-diimine-coordinated niobium center during transformation of the cyclopropylmethyl radical to a homoallyl radical. With regard to the reaction mechanism, we detected and isolated NbCl4(α-diimine) (6a) as a transient one-electron oxidized species of 1a during reductive cleavage of the C-X bonds; in addition, the monoanionic α-diimine ligand of 6a adopted a monoanionic canonical form with selective one-electron oxidation of the dianionic ene-diamido form of the ligand in 1a.
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Affiliation(s)
- Haruka Nishiyama
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Hideaki Ikeda
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Teruhiko Saito
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Benjamin Kriegel
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
| | - John Arnold
- Department of Chemistry, University of California , Berkeley, California 94720-1460, United States
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka, 5608531, Japan
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Kouketsu T, Yokomachi K, Kakimoto MA, Jikei M. Synthesis of Polyamide Dendrimers bearing Multiple Hydrogen Bonding Parts on the Periphery. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008304042385] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A series of polyamide dendrimers (GO-G2) having carboxy1 groups on the periphery were prepared by the divergent method. The reaction of G 18NH2 dendrimer with glutaric acid anhydride gave polyamide dendrimer (Gi-8COOH). The structure of polyamide dendrimers were confirmed by IR, 1H, 13C NMR, MALDI-TOF mass, and elemental analysis. Poly(4-vinylpyridine) (P4VP) was prepared by atom transfer radical polymerization of 4-vinylpyridine. A hydrogen bonded GI-8COOH/P4VP 1/8 (molar ratio) complex was prepared by mixing GIA8COOH with P4VP in methanol, followed by removing the solvent. IR spectrum of Gl-8COOH/P4VP 1/8 complex showed the characteristic absorptions at 2550 and 1950 cm-1 due to the hydrogen bonding. A glass transition temperature (Tg) of GI-8COOH/P4VP 1/8 complex was observed at 177°C by DSC measurement, whereas the Tg values of G 1-8COOH and P4VP were at 147 and 138°C, respectively.
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Affiliation(s)
| | - Kazutoshi Yokomachi
- Department of Organic and Polymeric materials, Tokyo Institute of Technology, Tokyo, Japan
| | - Masa-Aki Kakimoto
- Department of Organic and Polymeric materials, Tokyo Institute of Technology, Tokyo, Japan
| | - Mitsutoshi Jikei
- Department of Material-process Engineering & Applied Chemistry for Environments Akita University, Akita, Japan
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16
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Xiang W, Luo Q, Jiang H, Meng X, Li R, Zhang J, Peng T. New Ni(II) complexes based on N′NN′ pincer ligands: syntheses, structures and B–F cleavage of BF4− promoted by a di-cationic Ni(II) center. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1196360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Wenjing Xiang
- College of Chemistry & Molecular Science, Wuhan University, Wuhan, PR China
| | - Qin Luo
- College of Chemistry & Molecular Science, Wuhan University, Wuhan, PR China
| | - Huan Jiang
- College of Chemistry & Molecular Science, Wuhan University, Wuhan, PR China
| | - Xianggao Meng
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education and School of Chemistry, Central China Normal University, Wuhan, PR China
| | - Renjie Li
- College of Chemistry & Molecular Science, Wuhan University, Wuhan, PR China
| | - Jing Zhang
- College of Chemistry & Molecular Science, Wuhan University, Wuhan, PR China
| | - Tianyou Peng
- College of Chemistry & Molecular Science, Wuhan University, Wuhan, PR China
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17
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Murugesan S, Kirchner K. Non-precious metal complexes with an anionic PCP pincer architecture. Dalton Trans 2016; 45:416-39. [PMID: 26608262 DOI: 10.1039/c5dt03778f] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This perspective article provides an overview of the advancements in the field of non-precious metal complexes featuring anionic PCP pincer ligands with the inclusion of aliphatic systems. It covers research from the beginning in 1976 until late 2015 and provides a summary of key developments in this area, which is, to date, limited to the metals nickel, cobalt, iron, and molybdenum. While the research in nickel PCP complexes is already quite extensive, the chemistry of cobalt, iron, and molybdenum PCP complexes is comparatively sparse. With other non-precious metals such as copper, manganese, chromium or vanadium no PCP complexes are known as yet. In the case of nickel PCP complexes already many catalytic applications such as Suzuki-Miyaura coupling, C-S cross coupling, Kharasch and Michael additions, hydrosilylation of aldehydes and ketones, cyanomethylation of aldehydes, and hydroamination of nitriles were reported. While iron PCP complexes were found to be active catalysts for the hydrosilylation of aldehydes and ketones as well as the dehydrogenation of ammonia-borane, cobalt PCP complexes were not applied to any catalytic reactions. Surprisingly, only one molybdenum PCP complex is reported, which was capable of cleaving dinitrogen to give a nitride complex. This perspective underlines that the combination of cheap and abundant metals such as nickel, cobalt, and iron with PCP pincer ligands may result in the development of novel, versatile, and efficient catalysts for atom-efficient catalytic reactions.
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Affiliation(s)
- Sathiyamoorthy Murugesan
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria.
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria.
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18
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Chen Y, Tan R, Zhang Y, Zhao G, Yin D. Dendritic Chiral Salen Titanium(IV) Catalysts Enforce the Cooperative Catalysis of Asymmetric Sulfoxidation. ChemCatChem 2015. [DOI: 10.1002/cctc.201500900] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yaju Chen
- Key Laboratory of Chemical Biology and; Traditional Chinese Medicine Research (Ministry of Education); Key Laboratory of the Assembly and Application for Organic Functional Molecules; Hunan Normal University; Changsha Hunan 410081 P.R. China
| | - Rong Tan
- Key Laboratory of Chemical Biology and; Traditional Chinese Medicine Research (Ministry of Education); Key Laboratory of the Assembly and Application for Organic Functional Molecules; Hunan Normal University; Changsha Hunan 410081 P.R. China
| | - Yaoyao Zhang
- Key Laboratory of Chemical Biology and; Traditional Chinese Medicine Research (Ministry of Education); Key Laboratory of the Assembly and Application for Organic Functional Molecules; Hunan Normal University; Changsha Hunan 410081 P.R. China
| | - Guangwu Zhao
- Key Laboratory of Chemical Biology and; Traditional Chinese Medicine Research (Ministry of Education); Key Laboratory of the Assembly and Application for Organic Functional Molecules; Hunan Normal University; Changsha Hunan 410081 P.R. China
| | - Donghong Yin
- Key Laboratory of Chemical Biology and; Traditional Chinese Medicine Research (Ministry of Education); Key Laboratory of the Assembly and Application for Organic Functional Molecules; Hunan Normal University; Changsha Hunan 410081 P.R. China
- Technology Center; China Tobacco Hunan Industrial Corporation; NO. 426 Laodong Road Changsha Hunan 410014 P.R. China
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20
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Cloutier JP, Vabre B, Moungang-Soumé B, Zargarian D. Synthesis and Reactivities of New NCN-Type Pincer Complexes of Nickel. Organometallics 2014. [DOI: 10.1021/om5010176] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Boris Vabre
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | | | - Davit Zargarian
- Département de chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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21
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Hao J, Vabre B, Zargarian D. POCOP-Ligated Nickel Siloxide Complexes: Syntheses, Characterization, and Reactivities. Organometallics 2014. [DOI: 10.1021/om500916d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jingjun Hao
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Boris Vabre
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
| | - Davit Zargarian
- Département de Chimie, Université de Montréal, Montréal, Québec, Canada H3C 3J7
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22
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Roddick DM, Zargarian D. Pentacoordination for pincer and related terdentate coordination compounds: Revisiting structural properties and trends for d 8 transition metal systems. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.07.065] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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23
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Synthesis and Antibacterial Activity of Novel N-Methyl Pyrrolidine Dendrimers via [3+2] Cycloaddition. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2014. [DOI: 10.1007/s40010-013-0120-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Insight into the role of fluorinated dendrimers in ruthenium(II) catalyst for asymmetric transfer hydrogenation: The stabilizing effects from experimental and DFT approach. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.02.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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25
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Yakhvarov DG, Khusnuriyalova AF, Sinyashin OG. Electrochemical Synthesis and Properties of Organonickel σ-Complexes. Organometallics 2014. [DOI: 10.1021/om500100q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dmitry G. Yakhvarov
- A. E. Arbuzov Institute
of Organic and Physical
Chemistry, Kazan Scientific Centre of the Russian Academy of Sciences, Arbuzov str. 8, 420088 Kazan, Russian Federation
- Kazan Federal University, Kremlyovskaya
str. 18, 420008 Kazan, Russian Federation
| | | | - Oleg G. Sinyashin
- A. E. Arbuzov Institute
of Organic and Physical
Chemistry, Kazan Scientific Centre of the Russian Academy of Sciences, Arbuzov str. 8, 420088 Kazan, Russian Federation
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Zheng B, Tang F, Luo J, Schultz JW, Rath NP, Mirica LM. Organometallic Nickel(III) Complexes Relevant to Cross-Coupling and Carbon–Heteroatom Bond Formation Reactions. J Am Chem Soc 2014; 136:6499-504. [DOI: 10.1021/ja5024749] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Bo Zheng
- Department
of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
| | - Fengzhi Tang
- Department
of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
| | - Jia Luo
- Department
of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
| | - Jason W. Schultz
- Department
of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
| | - Nigam P. Rath
- Department
of Chemistry and Biochemistry, University of Missouri-St. Louis, One University Boulevard, St. Louis, Missouri 63121-4400, United States
| | - Liviu M. Mirica
- Department
of Chemistry, Washington University, One Brookings Drive, St. Louis, Missouri 63130-4899, United States
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Cao TPA, Nocton G, Ricard L, Le Goff XF, Auffrant A. A tetracoordinated phosphasalen nickel(III) complex. Angew Chem Int Ed Engl 2013; 53:1368-72. [PMID: 24375855 DOI: 10.1002/anie.201309222] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Indexed: 01/21/2023]
Abstract
The oxidation of a Ni(II) complex bearing a tetradentate phosphasalen ligand, which differs from salen by the presence of an iminophosphorane (PN) in place of an imine unit, was easily achieved by addition of a silver salt. The site of this oxidation was investigated with a combination of techniques (NMR, EPR, UV/Vis spectroscopy, X-ray diffraction, magnetic measurements) as well as DFT calculations. All data are in agreement with a high-valent Ni(III) center concentrating the spin density. This markedly differs from precedents in the salen series for which oxidation on the metal was only observed at low temperature or in the presence of additional ligands or anions. Therefore, thanks to the good electron-donating properties of the phosphasalen ligand, [Ni(Psalen)](+) represents a rare example of a tetracoordinated high-valent nickel complex in presence of a phenoxide ligand.
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Affiliation(s)
- Thi-Phuong-Anh Cao
- Laboratoire Hétéroéléments et Coordination, CNRS, École Polytechnique, Route de Saclay, 91128 Palaiseau (France) http://www.dcph.polytechnique.fr
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Cao TPA, Nocton G, Ricard L, Le Goff XF, Auffrant A. A Tetracoordinated Phosphasalen Nickel(III) Complex. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201309222] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Zhou CJ, Guan RF, Feng SY, Berg DJ, Stobart SR. The Preparation of a New Kind of Carbosilane Dendrimer with 4-(Naphthalen-1-yl)phenyl Core-An Application of Suzuki Coupling Reaction. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200500132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ishtaiwi Z, Rüffer T, Hildebrandt A, Awwadi FF, Hahn H, Abylaikhan A, Taher D, Siegert U, Walfort B, Lang H. Allyl‐End‐Grafted Carbosilane Dendrimers Based on 1,4‐Phenylene Units: Synthesis, Reactivity, Structure, and Bonding Motifs. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zakariyya Ishtaiwi
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Tobias Rüffer
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Alexander Hildebrandt
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Firas F. Awwadi
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
| | - Harald Hahn
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Akerke Abylaikhan
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Deeb Taher
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
| | - Uwe Siegert
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Bernhard Walfort
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
| | - Heinrich Lang
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Chemnitz University of Technology, Strasse der Nationen 62, 09111 Chemnitz, Germany, Fax: +49‐371‐531‐21219, http://https://www.tu‐chemnitz.de/chemie/anorg/
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The Monoanionic ECE-Pincer Ligand: A Versatile Privileged Ligand Platform—General Considerations. TOP ORGANOMETAL CHEM 2013. [DOI: 10.1007/978-3-642-31081-2_1] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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36
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Yazerski VA, Orue A, Evers T, Kleijn H, Klein Gebbink RJM. Molecularly enlarged S,S-BnTsDPEN ligands for iron-catalyzed asymmetric olefin epoxidation reactions using hydrogen peroxide. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00484h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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van Koten G. Organocopper Compounds: From Elusive to Isolable Species, from Early Supramolecular Chemistry with RCuI Building Blocks to Mononuclear R2–nCuII and R3–mCuIII Compounds. A Personal View. Organometallics 2012. [DOI: 10.1021/om300830n] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Gerard van Koten
- Organic Chemistry
and Catalysis, Debye Institute for
Nanomaterials Science, Faculty of Science, Utrecht University, 3584 CG Utrecht, The Netherlands
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38
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Rebrov EA, Leshchiner ID, Muzafarov AM. Synthesis of Carbosilane Dendrimers with Variable Distance between Branching Nodes. Macromolecules 2012. [DOI: 10.1021/ma300957d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. A. Rebrov
- Institute of Synthetic Polymeric
Materials, Russian Academy of Sciences,
Profsoyuznaya Str., 70, Moscow, 117393, Russia
| | - I. D. Leshchiner
- Faculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119992
Russia
| | - A. M. Muzafarov
- Institute of Synthetic Polymeric
Materials, Russian Academy of Sciences,
Profsoyuznaya Str., 70, Moscow, 117393, Russia
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Strašák T, Čermák J, Sýkora J, Horský J, Walterová Z, Jaroschik F, Harakat D. Carbosilane Metallodendrimers with Titanocene Dichloride End Groups. Organometallics 2012. [DOI: 10.1021/om300559y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tomáš Strašák
- Institute of Chemical Process
Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jan Čermák
- Institute of Chemical Process
Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jan Sýkora
- Institute of Chemical Process
Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojová
135, 165 02 Prague 6, Czech Republic
| | - Jiří Horský
- Institute of Macromolecular Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Heyrovského
nám. 2, 162 06 Prague 6, Czech Republic
| | - Zuzana Walterová
- Institute of Macromolecular Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Heyrovského
nám. 2, 162 06 Prague 6, Czech Republic
| | - Florian Jaroschik
- Institut de Chimie Moléculaire de Reims, UMR, CNRS 7312, Case postale
44 UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex
2, France
| | - Dominique Harakat
- Institut de Chimie Moléculaire de Reims, UMR, CNRS 7312, Case postale
44 UFR des Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex
2, France
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40
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An Y, Cheng C, Pan B, Wang Z. Mechanistic Insight into the Nickel-Catalyzed Intermolecular [3+2+2] Cocyclization of Ethyl Cyclopropylideneacetate with Alkynes: DFT Calculations. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200363] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Atom transfer radical addition (ATRA) of carbon tetrachloride and chlorinated esters to various olefins catalyzed by Cp′Ru(PPh3)(PR3)Cl complexes. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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42
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Size and shape assessment of organometallic gold(I) metallodendrimers through PGSE-NMR and molecular dynamics simulations. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.10.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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Kuwamura N, Kitano K, Hirotsu M, Nishioka T, Teki Y, Santo R, Ichimura A, Hashimoto H, Wright LJ, Kinoshita I. Redox‐Controlled, Reversible Rearrangement of a Tris(2‐pyridylthio)methyl Ligand on Nickel to an Isomer with an “
N
,
S
‐Confused” 2‐Pyridylthiolate Arm. Chemistry 2011; 17:10708-15. [DOI: 10.1002/chem.201100875] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Naoto Kuwamura
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA)
- CREST (Japan) Science and Technology Agency, 4‐1‐8 Honcho Kawaguchi, Saitama 332‐0012 (Japan)
| | - Ken'ichi Kitano
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
| | - Masakazu Hirotsu
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
| | - Takanori Nishioka
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
| | - Yoshio Teki
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
| | - Ryoko Santo
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
| | - Akio Ichimura
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA)
| | - Hideki Hashimoto
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA)
- CREST (Japan) Science and Technology Agency, 4‐1‐8 Honcho Kawaguchi, Saitama 332‐0012 (Japan)
| | - L. James Wright
- Department of Chemistry, University of Auckland, Private Bag 92019, Auckland (New Zealand)
| | - Isamu Kinoshita
- Departments of Material Science, Chemistry and Physics, Osaka City University, 3‐3‐138 Sugimoto, Sumiyoshi‐ku, Osaka, 558‐8585 (Japan), Fax: (+81) 6‐6690‐2753
- The OCU Advanced Research Institute for Natural Science and Technology (OCARINA)
- CREST (Japan) Science and Technology Agency, 4‐1‐8 Honcho Kawaguchi, Saitama 332‐0012 (Japan)
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Muñoz‐Molina JM, Belderrain TR, Pérez PJ. Atom Transfer Radical Reactions as a Tool for Olefin Functionalization – On the Way to Practical Applications. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100379] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- José María Muñoz‐Molina
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
| | - Tomás R. Belderrain
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Departamento de Química y Ciencia de los Materiales, Unidad Asociada al CSIC, Centro de Investigación en Química Sostenible (CIQSO), Campus de El Carmen s/n, Universidad de Huelva, 21007 Huelva, Spain
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45
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Hydroxy- and boronic-acid-functionalized carbosilanes: Synthesis and solid state structure of Si(C6H4-4-SiMe2((CH2)3OH))4. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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46
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Spasyuk DM, Gorelsky SI, van der Est A, Zargarian D. Characterization of divalent and trivalent species generated in the chemical and electrochemical oxidation of a dimeric pincer complex of nickel. Inorg Chem 2011; 50:2661-74. [PMID: 21322580 DOI: 10.1021/ic1025894] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The electrolytic and chemical oxidation of the dimeric pincer complex [κ(P),κ(C),κ(N),μ(N)-(2,6-(i-Pr(2)POC(6)H(3)CH(2)NBn)Ni](2) (1; Bn = CH(2)Ph) has been investigated by various analytic techniques. Cyclic voltammetry measurements have shown that 1 undergoes a quasi-reversible, one electron, Ni-based redox process (ΔE(0)(1/2) = -0.07 V vs Cp(2)Fe/[Cp(2)Fe](+)), and spectroelectrochemical measurements conducted on the product of the electrolytic oxidation, [1](+•), have shown multiple low-energy electronic transitions in the range of 10,000-15,000 cm(-1). Computational studies using Density Functional Theory (B3LYP) have corroborated the experimentally obtained structure of 1, provided the electronic structure description, and helped interpret the experimentally obtained absorption spectra for 1 and [1](+·). These calculations indicate that the radical cation [1](+·) is a dimeric, mixed-valent species (class III) wherein most of the spin density is delocalized over the two nickel centers (Ni(+2.5)(2)N(2)), but some spin density is also present over the two nitrogen atoms (Ni(2+)(2)N(2)·). Examination of alternative structures for open shell species generated from 1 has shown that the spin density distribution is highly sensitive toward changes in the ligand environment of the Ni ions. NMR, UV-vis, electron paramagnetic resonance (EPR), and single crystal X-ray diffraction analyses have shown that chemical oxidation of 1 with N-Bromosuccinimide (NBS) follows a complex process that gives multiple products, including the monomeric trivalent species κ(P),κ(C),κ(N)-{2,6-(i-Pr(2)PO)(C(6)H(3))(CH═NBn)}NiBr(2) (2). These studies also indicate that oxidation of 1 with 1 equiv of NBS gives an unstable, paramagnetic intermediate that decomposes to a number of divalent species, including succinimide and the monomeric divalent complexes κ(P),κ(C),κ(N)-{2,6-(i-Pr(2)PO)(C(6)H(3))(CH═NBn)}NiBr (3) and κ(P),κ(C),κ(N)-{2,6-(i-Pr(2)PO)(C(6)H(3))(CH(2)N(H)Bn)}NiBr(2) (4); a second equivalent of NBS then oxidizes 3 and 4 to 2 and other unidentified products. The divalent complex 3 was synthesized independently and shown to react with NBS or bromine to form its trivalent homologue 2. The new complexes 2 and 3 have been characterized fully.
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Affiliation(s)
- Denis M Spasyuk
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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47
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YANG G, QING D, GAO H, XU N. Effect of the Para-substituent of the Tridentate Pyridine-based Ru(II) Complex upon the Catalytic Activity in Transfer Hydrogenation. Chin J Chem Eng 2011. [DOI: 10.1016/s1004-9541(09)60194-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Dietrich S, Nicolai A, Lang H. Amidoamine-based dendrimers with end-grafted Pd–Fe units: Synthesis, characterization and their use in the Heck reaction. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.063] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Pijnenburg NJM, Dijkstra HP, van Koten G, Gebbink RJMK. SCS-pincer palladium-catalyzed auto-tandem catalysis using dendritic catalysts in semi-permeable compartments. Dalton Trans 2011; 40:8896-905. [DOI: 10.1039/c1dt10502g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Pijnenburg NJM, Lutz M, Siegler MA, Spek A, van Koten G, Gebbink RJMK. The role of the dendritic support in the catalytic performance of peripheral pincer Pd-complexes. NEW J CHEM 2011. [DOI: 10.1039/c1nj20366e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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