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Kaur M, Adhikari M, Manar KK, Yogesh Y, Prakash D, Singh S. BICAAC-Derived Covalent and Cationic Ir(I) Complexes: Application of Ir(BICAAC)Cl(COD) Complexes as Catalysts for Transfer Hydrogenation and Hydrosilylation Reactions. Inorg Chem 2024; 63:1513-1523. [PMID: 38192194 DOI: 10.1021/acs.inorgchem.3c01914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
The ambiphilic bicyclic (alkyl)(amino)carbenes (Me/iPrBICAAC) upon reaction with [IrCl(COD)]2 smoothly afford mononuclear Ir(I) complexes that have been spectroscopically and structurally characterized. These complexes exhibit good catalytic activity for transfer hydrogenation (TH) of 4-chlorobenzaldehyde using isopropyl alcohol (iPrOH), with turnover frequency values ranging between 6269 and 8093 h-1. Choosing the covalent complex Ir(MeBICAAC)Cl(COD) as a catalyst, a wide array of carbonyls and imines functionalized with electron-withdrawing and electron-donating substituents have been surveyed and afforded their reduced products in moderate-to-good yields. No detachment of the BICAAC unit from the Ir center was observed upon prolonged heating of Ir(MeBICAAC)Cl(COD) in toluene-d8 or isopropyl alcohol-d8, which evidenced good thermal stability of the catalyst. Complex Ir(MeBICAAC)Cl(COD) was also found to be catalytically active for the hydrosilylation of a variety of aldehydes using triethylsilane (Et3SiH).
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Affiliation(s)
- Mandeep Kaur
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Manu Adhikari
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Krishna K Manar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Yuvraj Yogesh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Darsana Prakash
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
| | - Sanjay Singh
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali 140306, Punjab, India
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2
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Ye Y, Liu Z, Wang Y, Zhang Y, Yin F, He Q, Peng J, Tan K, Shen Y. N-Indole-substituted N-heterocyclic carbene palladium precatalysts: Synthesis, characterization and catalytic cross-couplings. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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3
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Mourão H, Gomes CSB, Realista S, Royo B. Visible Light‐Induced Catalytic Hydrosilylation of Ketones Mediated by Manganese NHC Complexes. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Henrique Mourão
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República Oeiras Portugal
| | - Clara S. B. Gomes
- LAQV‐REQUIMTE and UCIBIO‐Applied Molecular Biosciences Unit, Department of Chemistry, Campus de Caparica NOVA School of Science and Technology, NOVA University of Lisbon Caparica Portugal
- Associated Laboratory i4HB‐Institute for Health and Bioeconomy School of Science and Technology, NOVA University of Lisbon Caparica Portugal
| | - Sara Realista
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República Oeiras Portugal
- Centro de Química Estrutural Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8 Lisboa Portugal
| | - Beatriz Royo
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Avenida da República Oeiras Portugal
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4
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Singh VK, Donthireddy SNR, Pandey VK, Rit A. Ru II-Complexes of heteroditopic chelating NHC ligands: effective catalysts for the β-alkylation of secondary alcohols and the synthesis of 2-alkylaminoquinoline derivatives following the dehydrogenative protocol. Org Biomol Chem 2022; 20:1945-1951. [PMID: 35170618 DOI: 10.1039/d2ob00034b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
RuII-Complexes of chelating heteroditopic N-heterocyclic carbene ligands featuring imidazol-2-ylidene (ImNHC) and 1,2,3-triazol-5-ylidene (tzNHC) donors connected via a CH2 spacer, 1a-c, were found to be very effective catalysts for the cross-coupling of secondary and primary alcohols with the elimination of H2O. Diverse β-alkylated secondary alcohols were thus obtained by following this method in excellent yields of up to 95% by employing a very low catalyst (1a) loading of 0.01-0.001 mol% along with the inexpensive base KOH. Mechanistically, the present protocol follows the borrowing hydrogen strategy which was established by various control experiments including deuterium labelling experiments and importantly, 1H NMR and ESI-MS analyses validated the participation of a Ru-H species in the catalytic cycle. Remarkably, the present system displayed the highest Ru-based TON of 396 000 for the β-benzylation of 1-phenylethanol with a catalyst loading of 1 ppm (0.0001 mol%). Additionally, diverse 2-alkylaminoquinoline derivatives were synthesized in a one-pot manner from 2-aminobenzyl alcohol, 2-arylacetonitrile, and various primary alcohols.
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Affiliation(s)
- Vivek Kumar Singh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - S N R Donthireddy
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Vipin K Pandey
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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5
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Song YL, Li B, Xie ZB, Wang D, Sun HM. Iron-Catalyzed Oxidative Amination of Benzylic C(sp 3)-H Bonds with Anilines. J Org Chem 2021; 86:17975-17985. [PMID: 34860531 DOI: 10.1021/acs.joc.1c02311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Iron-catalyzed oxidative amination of benzylic C(sp3)-H bonds with anilines bearing electron-withdrawing groups (EWGs) or electron-donating groups (EDGs) is realized based on simple variations of N-substituents on imidazolium cations in novel ionic Fe(III) complexes. The structural modification of the imidazolium cation resulted in regulation of the redox potential and the catalytic performance of the iron metal center. Using DTBP as oxidant, [HItBu][FeBr4] showed the highest catalytic activity for anilines bearing EWGs, while [HIPym][FeBr4] was more efficient for EDG-substituted anilines. This work provides alternative access to benzylamines with the advantages of both a wide substrate scope and iron catalysis.
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Affiliation(s)
- Yan-Ling Song
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Bei Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Zhen-Biao Xie
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Dan Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
| | - Hong-Mei Sun
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering, Soochow University, 199 Renai Street, Suzhou, Jiangsu 215123, China
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Akpunar C, Özdemir N, Karataş MO, Alıcı B, Özdemir İ. Synthesis, crystal structures and catalytic activities of palladium complexes with coumarin-functionalised N-heterocyclic carbene ligands. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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7
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Karataş MO, Alıcı B, Passarelli V, Özdemir I, Pérez-Torrente JJ, Castarlenas R. Iridium(i) complexes bearing hemilabile coumarin-functionalised N-heterocyclic carbene ligands with application as alkyne hydrosilylation catalysts. Dalton Trans 2021; 50:11206-11215. [PMID: 34338264 DOI: 10.1039/d1dt01946e] [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
A set of iridium(i) complexes of formula IrCl(κC,η2-IRCouR')(cod) or IrCl(κC, η2-BzIRCouR')(cod) (cod = 1,5-cyclooctadiene; Cou = coumarin; I = imidazolin-2-carbene; BzI = benzimidazolin-2-carbene) have beeen prepared from the corresponding azolium salt and [Ir(μ-OMe)(cod)]2 in THF at room temperature. The crystalline structures of 4b and 5b show a distorted trigonal bipyramidal configuration in the solid state with a coordinated coumarin moiety. In contrast, an equilibrium between this pentacoordinated structure and the related square planar isomer is observed in solution as a consequence of the hemilability of the pyrone ring. Characterization of both species by NMR was achieved at the low and high temperature limits, respectively. In addition, the thermodynamic parameters of the equilibrium, ΔHR and ΔSR, were obtained by VT 1H NMR spectroscopy and fall in the range 22-33 kJ mol-1 and 72-113 J mol-1 K-1, respectively. Carbonylation of IrCl(κC,η2-BzITolCou7,8-Me2)(cod) resulted in the formation of a bis-CO derivative showing no hemilabile behaviour. The newly synthesised complexes efficiently catalyze the hydrosilylation of alkynes at room temperature with a preference for the β-(Z) vinylsilane isomer.
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Affiliation(s)
- Mert Olgun Karataş
- Departamento de Química Inorgánica-Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, CP. 50009, Zaragoza, Spain.
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Karataş MO, Özdemir N, Sarıman M, Günal S, Ulukaya E, Özdemir İ. Water-soluble silver(i) complexes with N-donor benzimidazole ligands containing an imidazolium core: stability and preliminary biological studies. Dalton Trans 2021; 50:11596-11603. [PMID: 34355725 DOI: 10.1039/d1dt02008k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Herein, we report the synthesis, characterisation and preliminary biological evaluation of two novel silver(i) complexes of type [AgL2](NO3)3 (3 and 4) with ionic N-donor benzimidazoles. The complexes have been synthesized by the reaction of 1.5 equivalents of silver nitrate and N-donor benzimidazoles containing an imidazolium core at the 2-position (1 and 2) in ethanol. The X-ray analysis of 4 shows that it has two free imidazolium cores and the charge is balanced with three nitrate anions. A study by the combination of NMR, IR, LC-MS and elemental analysis techniques also suggests that the complexes have this structure both in the solid-state and solution. The complexes are highly soluble and stable in water. Cytotoxicity evaluation against four cancerous human cells and one non-cancerous human cell revealed that the complexes have no significant anti-growth effect. However, the complexes showed a remarkable antimicrobial effect at normalized minimum inhibitory concentrations (normalized MICs) in the range of 33-268 μM against a panel of microorganisms consisting of Gram-negative and Gram-positive bacteria, and fungi.
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Affiliation(s)
- Mert Olgun Karataş
- İnönü University, Faculty of Science, Department of Chemistry, 9044280 Malatya, Turkey.
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9
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Yang SQ, Yao YQ, Chen XC, Lu Y, Zhao XL, Liu Y. Pd-Catalyst Containing a Hemilabile P,C-Hybrid Ligand in Amino Dicarbonylation of Aryl Halides for Synthesis of α-Ketoamides. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00024] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shu-Qing Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, PR China
| | - Yin-Qing Yao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, PR China
| | - Xiao-Chao Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, PR China
| | - Yong Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, PR China
| | - Xiao-Li Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, PR China
| | - Ye Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, PR China
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10
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Ji L, Cui T, Nie X, Zheng Y, Zheng X, Fu H, Yuan M, Chen H, Xu J, Li R. Catalytic hydrogenation of CO 2 with unsymmetric N-heterocyclic carbene–nitrogen–phosphine ruthenium complexes. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01713f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Unsymmetric Ru-CNP and Ru-CN(H)P complexes are synthesized and applied in the hydrogenation of CO2 to formate for the first time.
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Affiliation(s)
- Li Ji
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Tianhua Cui
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xufeng Nie
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yanling Zheng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Hua Chen
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jiaqi Xu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
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11
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Srivastava R, Jakoobi M, Thieuleux C, Quadrelli EA, Camp C. A family of rhodium(i) NHC chelates featuring O-containing tethers for catalytic tandem alkene isomerization-hydrosilylation. Dalton Trans 2020; 50:869-879. [PMID: 33237067 DOI: 10.1039/d0dt03698f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The rhodium complex Rh(HL)(COD)Cl, 1, L being a functionalized N-heterocyclic carbene (NHC) ligand with an oxygen-containing pendant arm, has been used as the entry point to synthesize a series of neutral and cationic Rh(i) O,C chelates. While the Rh-carbene interaction is similar in all these 16-electron complexes, structural analysis reveals that the strength of the Rh-O bond is greatly affected by the nature of the O-donor: R-O- > R-OH > R-OBF3. These subtle changes in the nature of the O-containing tether are found to be responsible for large differences in the alkene hydrosilylation catalytic activity of these compounds: the stronger the Rh-O interaction, the better the catalytic performances. The most active catalyst, [Rh(L)(COD)], 2, demonstrated good catalytic activity under mild reaction conditions for the hydrosilylation of a range of alkene substrates with the industrially relevant non-activated tertiary silane, 1,1,1,3,5,5,5-heptamethyltrisiloxane (MDHM). Furthermore, this complex is an effective catalyst for the selective remote functionalization of internal olefins at room temperature via tandem alkene isomerization-hydrosilylation.
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Affiliation(s)
- Ravi Srivastava
- Université de Lyon, Institut de Chimie de Lyon, C2P2 UMR 5265 CNRS-UCBL-CPE Lyon, 43 Bd du 11 Novembre 1918, F-69616 Villeurbanne, France.
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12
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Carrasco AC, Rodríguez-Fanjul V, Pizarro AM. Activation of the Ir-N(pyridine) Bond in Half-Sandwich Tethered Iridium(III) Complexes. Inorg Chem 2020; 59:16454-16466. [PMID: 33103884 DOI: 10.1021/acs.inorgchem.0c02287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We present four new organometallic half-sandwich iridium(III) complexes of formula [Ir(η5:κ1-C5Me4CH2py)(N,N)](PF6)2, bearing a N,N-chelating ligand [ethylenediamine (en), 1; 1,3-diaminopropane (dap), 2; 2,2'-bipyridine (bipy), 3; 1,10-phenanthroline (phen), 4]; and a derivatized cyclopentadienyl ligand, C5Me4CH2C5H4N, which forms an additional five-membered chelate. The latter is hemilabile, and the Ir-N(py) bond can be reversibly cleaved by various stimuli. The four complexes are unreactive toward hydrolysis at pH 7. Interestingly, 1 and 2 react with hydrochloric acid and formate, and speciation between closed and open tether complexes can be followed by 1H NMR spectroscopy. Complex 1 binds to nucleobase guanine (9-ethylguanine, 9-EtG), yet interaction to calf-thymus DNA was not observed. New X-ray structures of closed tether complexes 1-4 and open tether complexes [Ir(η5-C5Me4CH2pyH)(en)Cl](PF6)2 (1·HCl) and [Ir(η5-C5Me4CH2py)(en)H]PF6 (1·hyd) have been determined. Hydride capture is efficient for 1 and 2. The kinetics of Ir-H bond formation and hydride transfer in a model organic molecule have been investigated, revealing a strong dependence on the temperature. Coincubation of complex 1 with nontoxic concentrations of sodium formate decreases the IC50 value in MCF7 breast cancer cells, indicating the possibility of intracellular activation of the Ir-N(py) tether bond to generate cytotoxic activity via iridium-mediated transfer hydrogenation.
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Yan H, Liu Z, Tan K, Tan K, Ji R, Ye Y, Yan T, Shen Y. Synthesis and evaluation of indole-substituted N-heterocyclic carbene ligands. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Ferri N, Algethami N, Vezzoli A, Sangtarash S, McLaughlin M, Sadeghi H, Lambert CJ, Nichols RJ, Higgins SJ. Hemilabile Ligands as Mechanosensitive Electrode Contacts for Molecular Electronics. Angew Chem Int Ed Engl 2019; 58:16583-16589. [PMID: 31364249 PMCID: PMC6899542 DOI: 10.1002/anie.201906400] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Indexed: 11/21/2022]
Abstract
Single-molecule junctions that are sensitive to compression or elongation are an emerging class of nanoelectromechanical systems (NEMS). Although the molecule-electrode interface can be engineered to impart such functionality, most studies to date rely on poorly defined interactions. We focused on this issue by synthesizing molecular wires designed to have chemically defined hemilabile contacts based on (methylthio)thiophene moieties. We measured their conductance as a function of junction size and observed conductance changes of up to two orders of magnitude as junctions were compressed and stretched. Localised interactions between weakly coordinating thienyl sulfurs and the electrodes are responsible for the observed effect and allow reversible monodentate⇄bidentate contact transitions as the junction is modulated in size. We observed an up to ≈100-fold sensitivity boost of the (methylthio)thiophene-terminated molecular wire compared with its non-hemilabile (methylthio)benzene counterpart and demonstrate a previously unexplored application of hemilabile ligands to molecular electronics.
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Affiliation(s)
- Nicolò Ferri
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | | | - Andrea Vezzoli
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Sara Sangtarash
- Department of PhysicsLancaster UniversityLancasterLA1 4YBUK
- School of EngineeringUniversity of WarwickCoventryCV4 7ALUK
| | - Maeve McLaughlin
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Hatef Sadeghi
- Department of PhysicsLancaster UniversityLancasterLA1 4YBUK
- School of EngineeringUniversity of WarwickCoventryCV4 7ALUK
| | | | - Richard J. Nichols
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
| | - Simon J. Higgins
- Department of ChemistryUniversity of LiverpoolCrown StreetLiverpoolL69 7ZDUK
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Ferri N, Algethami N, Vezzoli A, Sangtarash S, McLaughlin M, Sadeghi H, Lambert CJ, Nichols RJ, Higgins SJ. Hemilabile Ligands as Mechanosensitive Electrode Contacts for Molecular Electronics. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nicolò Ferri
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Norah Algethami
- Department of PhysicsLancaster University Lancaster LA1 4YB UK
| | - Andrea Vezzoli
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Sara Sangtarash
- Department of PhysicsLancaster University Lancaster LA1 4YB UK
- School of EngineeringUniversity of Warwick Coventry CV4 7AL UK
| | - Maeve McLaughlin
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Hatef Sadeghi
- Department of PhysicsLancaster University Lancaster LA1 4YB UK
- School of EngineeringUniversity of Warwick Coventry CV4 7AL UK
| | | | - Richard J. Nichols
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Simon J. Higgins
- Department of ChemistryUniversity of Liverpool Crown Street Liverpool L69 7ZD UK
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Hu Y, Guo S. Palladacycles bearing COOH-/ester-functionalized N-heterocyclic carbenes: Divergent syntheses and catalytic applications. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yanyan Hu
- Department of Chemistry; Capital Normal University; Beijing People's Republic of China
| | - Shuai Guo
- Department of Chemistry; Capital Normal University; Beijing People's Republic of China
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Schroeter F, Císařová I, Soellner J, Herdtweck E, Strassner T. Electron-poor hemilabile dicationic palladium NHC complexes - synthesis, structure and catalytic activity. Dalton Trans 2018; 47:16638-16650. [PMID: 30421765 DOI: 10.1039/c8dt03373k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We present a new class of dicationic palladium NHC complexes with two carbene ligands bearing different aryl substituents and a hemilabile pyrimidyl group. They can either be synthesized from the imidazolium salts via the silver transmetalation route to a halide-free palladium(ii) precursor or by direct deprotonation by palladium acetate. For four complexes we could determine their solid-state structures by X-ray diffraction experiments. Insight gained by NMR spectroscopy and DFT calculations revealed that in solution the two potentially bidentate ligands interchange between chelating and non-chelating coordination modes. The preference of these coordination modes is governed by the steric influence of the different ligands. The complexes were shown to be active catalysts for the hydroarylation of alkynes, and their performance was rationalized by DFT calculations.
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Affiliation(s)
- Felix Schroeter
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
| | - Ivana Císařová
- Charles University Prague, Department of Inorganic Chemistry, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Johannes Soellner
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
| | - Eberhardt Herdtweck
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, 85747 Garching bei München, Germany
| | - Thomas Strassner
- Fakultät Chemie und Lebensmittelchemie, TU Dresden, 01062 Dresden, Germany.
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19
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Özbozkurt İK, Gülcemal D, Günnaz S, Gökçe AG, Çetinkaya B, Gülcemal S. Enhanced Catalytic Activity of Oxygen-Tethered IrIII
NHC Complexes in Aqueous Transfer Hydrogenative Reductive Amination Reactions: Experimental Kinetic and Mechanistic Study. ChemCatChem 2018. [DOI: 10.1002/cctc.201800558] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Derya Gülcemal
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
| | - Salih Günnaz
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
| | - Aytaç Gürhan Gökçe
- Department of Physics; Adnan Menderes University; 09010 Efeler, Aydın Turkey
| | - Bekir Çetinkaya
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
| | - Süleyman Gülcemal
- Department of Chemistry; Ege University; 35100 Bornova, Izmir Turkey
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20
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Iglesias M, Oro LA. A leap forward in iridium-NHC catalysis: new horizons and mechanistic insights. Chem Soc Rev 2018; 47:2772-2808. [PMID: 29557434 DOI: 10.1039/c7cs00743d] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review summarises the most recent advances in Ir-NHC catalysis while revisiting all the classical reactions in which this type of catalyst has proved to be active. The influence of the ligand system and, in particular, the impact of the NHC ligand on the activity and selectivity of the reaction have been analysed, accompanied by an examination of the great variety of catalytic cycles hitherto reported. The reaction mechanisms so far proposed are described and commented on for each individual process. Moreover, some general considerations that attempt to explain the influence of the NHC from a mechanistic viewpoint are presented at the end of the review. The first sections are dedicated to the most widely explored reactions that use Ir-NHCs, i.e., hydrogenation and transfer hydrogenation, for which a general overview that tries to compile all the Ir-NHC catalysts hitherto reported for these processes is provided. The next sections deal with hydrogen borrowing, hydrosilylation, water splitting, dehydrogenation (of alcohols, alkanes, aminoboranes and formic acid), hydrogen isotope exchange (HIE), signal amplification by reversible exchange and C-H bond functionalisation (silylation and borylation). The last section compiles a series of reactions somewhat less explored for Ir-NHC catalysts that include the hydroalkynylation of imines, hydroamination, diboration of olefins, hydrolysis and methanolysis of silanes, arylation of aldehydes with boronic acids, addition of aroyl chlorides to alkynes, visible light driven reactions, isomerisation of alkenes, asymmetric intramolecular allylic amination and reactions that employ heterometallic catalysts containing at least one Ir-NHC unit.
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Affiliation(s)
- Manuel Iglesias
- Departamento Química Inorgánica - ISQCH, Universidad de Zaragoza - CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Luis A Oro
- Departamento Química Inorgánica - ISQCH, Universidad de Zaragoza - CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain. and King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia
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21
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Fei F, Lu T, Yang C, Chen X, Xue Z. Synthesis, Structures, and Catalytic Properties of Dinuclear Iridium(I) Complexes with a Hexadentate Macrocyclic Diamine‐Tetracarbene Ligand. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fan Fei
- State Key Laboratory of Coordination Chemistry Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing P. R. China
| | - Taotao Lu
- State Key Laboratory of Coordination Chemistry Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing P. R. China
| | - Chu‐Fan Yang
- State Key Laboratory of Coordination Chemistry Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing P. R. China
| | - Xue‐Tai Chen
- State Key Laboratory of Coordination Chemistry Nanjing National Laboratory of Microstructures School of Chemistry and Chemical Engineering Nanjing University 210023 Nanjing P. R. China
| | - Zi‐Ling Xue
- Department of Chemistry University of Tennessee 37996 Knoxville Tennessee USA
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22
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Jiang Y, Gendy C, Roesler R. Nickel, Ruthenium, and Rhodium NCN-Pincer Complexes Featuring a Six-Membered N-Heterocyclic Carbene Central Moiety and Pyridyl Pendant Arms. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yanmin Jiang
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada
| | - Chris Gendy
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada
| | - Roland Roesler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4 Canada
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23
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Hirotsu M, Santo K, Tanaka Y, Kinoshita I. Iron carbonyl complexes of N,C,S-pincer ligands with a pendant thioether arm: Synthesis, structures and reactivity. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.10.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Cheng H, Xiong MQ, Cheng CX, Wang HJ, Lu Q, Liu HF, Yao FB, Chen C, Verpoort F. In situ Generated Ruthenium Catalyst Systems Bearing Diverse N-Heterocyclic Carbene Precursors for Atom-Economic Amide Synthesis from Alcohols and Amines. Chem Asian J 2018; 13:440-448. [DOI: 10.1002/asia.201701734] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/09/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Hua Cheng
- Department of Chemical Engineering and Food Science; Hubei University of Arts and Science; 296 Longzhong Road Xiangyang 441053 P. R. China
| | - Mao-Qian Xiong
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 P. R. China
| | - Chuan-Xiang Cheng
- Department of Chemical Engineering and Food Science; Hubei University of Arts and Science; 296 Longzhong Road Xiangyang 441053 P. R. China
| | - Hua-Jing Wang
- School of Chemistry, Chemical Engineering and Life Sciences; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 P. R. China
| | - Qiang Lu
- Department of Chemical Engineering and Food Science; Hubei University of Arts and Science; 296 Longzhong Road Xiangyang 441053 P. R. China
| | - Hong-Fu Liu
- Department of Chemical Engineering and Food Science; Hubei University of Arts and Science; 296 Longzhong Road Xiangyang 441053 P. R. China
| | - Fu-Bin Yao
- Department of Chemical Engineering and Food Science; Hubei University of Arts and Science; 296 Longzhong Road Xiangyang 441053 P. R. China
| | - Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 P. R. China
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 P. R. China
- School of Chemistry, Chemical Engineering and Life Sciences; Wuhan University of Technology; 122 Luoshi Road Wuhan 430070 P. R. China
- National Research Tomsk Polytechnic University; Lenin Avenue 30 Tomsk 634050 Russian Federation
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25
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Gerlach DL, Siek S, Burks DB, Tesh JM, Thompson CR, Vasquez RM, White NJ, Zeller M, Grotjahn DB, Papish ET. Ruthenium (II) and Iridium (III) Complexes of N-Heterocyclic Carbene and Pyridinol Derived Bidentate Chelates: Synthesis, Characterization, and Reactivity. Inorganica Chim Acta 2017; 466:442-450. [PMID: 29217867 PMCID: PMC5714516 DOI: 10.1016/j.ica.2017.06.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report the synthesis and characterization of new ruthenium(II) and iridium(III) complexes of a new bidentate chelate, NHCR'-pyOR (OR = OMe, OtBu, OH and R' = Me, Et). Synthesis and characterization studies were done on the following compounds: four ligand precursors (1-4); two silver complexes of these NHCR'-pyOR ligands (5-7); six ruthenium complexes of the type [η6-(p-cymene)Ru(NHCR'-pyOR)Cl]X with R' = Me, Et and R = Me, tBu, H and X = OTf-, PF6- and PO2F2- (8-13); and two iridium complexes, [Cp*Ir(NHCMe-pyOtBu)Cl]PF6 (14) and [Cp*Ir(NHCMe-pyOH)Cl]PO2F2 (15). The complexes are air stable and were isolated in moderate yield. However, for the PF6- salts, hydrolysis of the PF6- counter anion to PO2F2- during t-butyl ether deprotection was observed. Most of the complexes were characterized by 1H and 13C-NMR, MS, IR, and X-ray diffraction. The ruthenium complexes [η6-(p-cymene)Ru(NHCMe-pyOR)Cl]OTf (R = Me (8) and tBu (9)) were tested for their ability to accelerate CO2 hydrogenation and formic acid dehydrogenation. However, our studies show that the complexes transform during the reaction and these complexes are best thought of as pre-catalysts.
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Affiliation(s)
- Deidra L. Gerlach
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
| | - Sopheavy Siek
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
| | - Dalton B. Burks
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
| | - Jamie M. Tesh
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
| | - Courtney R. Thompson
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
| | - Robert M. Vasquez
- Department of Chemistry and Biochemistry, 5500 Campanile Drive, San Diego State University, San Diego, California 92182-1030, USA
| | - Nicholas J. White
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
| | - Matthias Zeller
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA
| | - Douglas B. Grotjahn
- Department of Chemistry and Biochemistry, 5500 Campanile Drive, San Diego State University, San Diego, California 92182-1030, USA
| | - Elizabeth T. Papish
- Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487-0336, USA
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26
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Yu XJ, He HY, Yang L, Fu HY, Zheng XL, Chen H, Li RX. Hemilabile N-heterocyclic carbene (NHC)-nitrogen-phosphine mediated Ru (II)-catalyzed N-alkylation of aromatic amine with alcohol efficiently. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2017.03.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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27
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Abstract
It is well-recognized that N-heterocyclic carbene (NHC) ligands have provided a new dimension to the design of homogeneous catalysts. Part of the success of this type of ligands resides in the limitless access to a variety of topologies with tuned electronic properties, but also in the ability of a family of NHCs that are able to adapt their properties to the specific requirements of individual catalytic transformations. The term "smart" is used here to refer to switchable, multifunctional, adaptable, or tunable ligands and, in general, to all those ligands that are able to modify their steric or electronic properties to fulfill the requirements of a defined catalytic reaction. The purpose of this review is to comprehensively describe all types of smart NHC ligands by focusing attention on the catalytically relevant ligand-based reactivity.
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Affiliation(s)
- Eduardo Peris
- Institute of Advanced Materials , Universitat Jaume I , Avenida Vicente Sos Baynat s/n , Castellón E-12071 , Spain
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28
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The cyclooctadiene ligand in [IrCl(COD)] 2 is hydrogenated under transfer hydrogenation conditions: A study in the presence of PPh 3 and a strong base in isopropanol. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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29
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Hsu CW, Ly KT, Lee WK, Wu CC, Wu LC, Lee JJ, Lin TC, Liu SH, Chou PT, Lee GH, Chi Y. Triboluminescence and Metal Phosphor for Organic Light-Emitting Diodes: Functional Pt(II) Complexes with Both 2-Pyridylimidazol-2-ylidene and Bipyrazolate Chelates. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33888-33898. [PMID: 27960361 DOI: 10.1021/acsami.6b12707] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report the utilization of both pyrid-2-yl-imidazolylidene and dianionic bipz chelates as constituents in syntheses of a new series of charge-neutral Pt(II) complexes 1-4, among which complex 4 revealed remarkable triboluminescence, i.e., generation of photoemission upon grinding or cracking of the solid sample. The triboluminescence is found to be sensitive to the subtle changes of the associated substituents of pyrid-2-yl-imidazolylidene chelate, as verified by the disappearance of the triboluminescence for complexes 1-3. Alternatively, the well-ordered solid packing of 3, as indicated by the grazing incidence X-ray scattering experiment, serves as an ideal emitter for the fabrication of highly efficient OLEDs, rendering high external quantum efficienciy (25.9%) and luminesce efficiency (90 cd A-1) at the practical brightness of 100 cd m-2. The rather low roll-off in efficiency (24.4%, 85 cd A-1 at high brightness of 1000 cd m-2) is attributed to the short excited-state lifetime of 3 (∼800 ns) in the solid state, which in turn is associated with the MMLCT transition character.
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Affiliation(s)
- Che-Wei Hsu
- Department of Chemistry, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Kiet Tuong Ly
- Department of Chemistry, National Tsing Hua University , Hsinchu 30013, Taiwan
| | | | | | - Lai-Chin Wu
- Synchrotron Radiation Research Center , Hsinchu 30076, Taiwan
| | - Jey-Jau Lee
- Synchrotron Radiation Research Center , Hsinchu 30076, Taiwan
| | | | | | | | | | - Yun Chi
- Department of Chemistry, National Tsing Hua University , Hsinchu 30013, Taiwan
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30
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Malan FP, Noh JH, Naganagowda G, Singleton E, Meijboom R. One-pot reductive amination of carbonyl compounds with ammonia via ‘hydrogen borrowing’ using hydrido- and bis-ammine P,O(Me)-ruthenacycles. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.10.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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31
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Hollering M, Albrecht M, Kühn FE. Bonding and Catalytic Application of Ruthenium N-Heterocyclic Carbene Complexes Featuring Triazole, Triazolylidene, and Imidazolylidene Ligands. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00504] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Manuela Hollering
- Department of Chemistry & Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
- SC
XRD Laboratory, Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Martin Albrecht
- Department of Chemistry & Biochemistry, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Fritz E. Kühn
- Department of Chemistry & Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
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32
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Hollering M, Weiss DT, Bitzer MJ, Jandl C, Kühn FE. Controlling Coordination Geometries: Ru–Carbene Complexes with Tetra-NHC Ligands. Inorg Chem 2016; 55:6010-7. [DOI: 10.1021/acs.inorgchem.6b00509] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manuela Hollering
- Department of Chemistry & Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
- SC
XRD Laboratory, Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Daniel T. Weiss
- Department of Chemistry & Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
| | - Mario J. Bitzer
- Department of Chemistry & Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
| | - Christian Jandl
- SC
XRD Laboratory, Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Fritz E. Kühn
- Department of Chemistry & Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
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33
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Sipos G, Ou A, Skelton BW, Falivene L, Cavallo L, Dorta R. Unusual NHC–Iridium(I) Complexes and Their Use in the Intramolecular Hydroamination of Unactivated Aminoalkenes. Chemistry 2016; 22:6939-46. [DOI: 10.1002/chem.201600378] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Gellért Sipos
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Arnold Ou
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Brian W. Skelton
- Centre for Microscopy, Characterisation and Analysis University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
| | - Laura Falivene
- Kaust Catalysis Center, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- Kaust Catalysis Center, Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - Reto Dorta
- School of Chemistry and Biochemistry University of Western Australia 35 Stirling Highway 6009 Crawley WA Australia
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34
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Zhao S, Wu F, Ma Y, Chen W, Liu M, Wu H. Enhancement of N-heterocyclic carbenes on rhodium catalyzed olefination of triazoles. Org Biomol Chem 2016; 14:2550-5. [DOI: 10.1039/c5ob02397a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A few rhodium complexes of N-heterocyclic carbenes were prepared through carbene transfer reactions and their structures were characterized by X-ray diffraction analysis.
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Affiliation(s)
- Shixian Zhao
- Department of Chemistry
- Zhejiang University
- Hangzhou 310028
- China
| | - Feifei Wu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310028
- China
| | - Yuyu Ma
- Department of Chemistry
- Zhejiang University
- Hangzhou 310028
- China
| | - Wanzhi Chen
- Department of Chemistry
- Zhejiang University
- Hangzhou 310028
- China
| | - Miaochang Liu
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- China
| | - Huayue Wu
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- China
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35
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Rangel-Rangel E, Verde-Sesto E, Rasero-Almansa AM, Iglesias M, Sánchez F. Porous aromatic frameworks (PAFs) as efficient supports for N-heterocyclic carbene catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00597g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymeric aromatic frameworks (PAFs), easily obtained from organic platforms, as excellent supports to yield robust well-defined organometallic heterogenized catalysts.
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Affiliation(s)
| | - Ester Verde-Sesto
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- 28049 Madrid
- Spain
| | | | - Marta Iglesias
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- 28049 Madrid
- Spain
| | - Félix Sánchez
- Instituto de Química Orgánica
- IQOG-CSIC
- 28006 Madrid
- Spain
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36
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Nair AG, McBurney RT, Walker DB, Page MJ, Gatus MRD, Bhadbhade M, Messerle BA. Ruthenium(ii) complexes of hemilabile pincer ligands: synthesis and catalysing the transfer hydrogenation of ketones. Dalton Trans 2016; 45:14335-42. [DOI: 10.1039/c6dt02459a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of hemilabile NHC Ru(ii) complexes were synthesised and assessed for their catalytic activity for transfer hydrogenation reactions.
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Affiliation(s)
- Ashwin G. Nair
- School of Chemistry
- University of New South Wales
- Sydney 2052
- Australia
- Department of Chemistry and Biomolecular Sciences
| | - Roy T. McBurney
- Department of Chemistry and Biomolecular Sciences
- Macquarie University
- Australia
| | - D. Barney Walker
- School of Chemistry
- University of New South Wales
- Sydney 2052
- Australia
- Department of Chemistry and Biomolecular Sciences
| | - Michael J. Page
- School of Chemistry
- University of New South Wales
- Sydney 2052
- Australia
| | - Mark R. D. Gatus
- School of Chemistry
- University of New South Wales
- Sydney 2052
- Australia
- Department of Chemistry and Biomolecular Sciences
| | - Mohan Bhadbhade
- Mark Wainwright Analytical Centre
- University of New South Wales
- Sydney 2052
- Australia
| | - Barbara A. Messerle
- School of Chemistry
- University of New South Wales
- Sydney 2052
- Australia
- Department of Chemistry and Biomolecular Sciences
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37
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Volpe A, Baldino S, Tubaro C, Baratta W, Basato M, Graiff C. Dinuclear Di(N-heterocyclic carbene) Iridium(III) Complexes as Catalysts in Transfer Hydrogenation. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501027] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Gülcemal D, Gülcemal S, Robertson CM, Xiao J. A New Phenoxide Chelated IrIII N-Heterocyclic Carbene Complex and Its Application in Reductive Amination Reactions. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00625] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Derya Gülcemal
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
- Department
of Chemistry, Ege University, 35100 Bornova-Izmir, Turkey
| | - Süleyman Gülcemal
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
- Department
of Chemistry, Ege University, 35100 Bornova-Izmir, Turkey
| | - Craig M. Robertson
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
| | - Jianliang Xiao
- Department
of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K
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39
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Jiménez MV, Fernández-Tornos J, Pérez-Torrente JJ, Modrego FJ, Garcı́a-Orduña P, Oro LA. Mechanistic Insights into Transfer Hydrogenation Catalysis by [Ir(cod)(NHC)2]+ Complexes with Functionalized N-Heterocyclic Carbene Ligands. Organometallics 2015. [DOI: 10.1021/om5013083] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- M. Victoria Jiménez
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
| | - Javier Fernández-Tornos
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
| | - Jesús J. Pérez-Torrente
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
| | - Francisco J. Modrego
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
| | - Pilar Garcı́a-Orduña
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica
y Catálisis Homogénea-ISQCH, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
| |
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