1
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Liu R, Qu Y, Sun Z, Yang L, Xi Z, Dong B, Guo M, Fedushkin IL, Yang XJ. Reduction of Ketones and Coupling of Ketyls by a Zn-Zn-Bonded Compound. Inorg Chem 2024; 63:13558-13567. [PMID: 38962945 DOI: 10.1021/acs.inorgchem.4c01669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
The α-diimine-ligated Zn-Zn-bonded compound [K(THF)2]2[LZn-ZnL] (1, L = [(2,6-iPr2C6H3)NC(Me)]22-) displays diverse reactivities toward a variety of ketones. In the reaction of 1 with benzophenone or 4,4'-di-tert-butylbenzophenone, a multielectron transfer process was observed to give bimetallic (Zn/K) complexes with both ketyl radical fragments and C-C coupled pinacolate moieties (products 2 and 3). In contrast, treating 1 with 9-fluorenone only afforded pinacolate complex 5. Moreover, the reactions of 1 with N- or O-heterocycle-functionalized ketones, i.e., di(2-pyridyl)ketone, 2,2-pyrrolidinone, 9-xanthenone, or 10-methyl-9(10H)-acridone, were also carried out. Besides different transformations of the ketone moiety, the heteroatoms (nitrogen or oxygen) are also involved in coordination with zinc or potassium ions, yielding discrete aggregates or polymeric structures of products 6-9.
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Affiliation(s)
- Rui Liu
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yao Qu
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhenzhou Sun
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Li Yang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhixian Xi
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Ben Dong
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Meng Guo
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Igor L Fedushkin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences (IOMC RAS), Nizhny Novgorod 603950, Russian Federation
| | - Xiao-Juan Yang
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
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2
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Fu Y, Tang J, Hua J. Ultrahigh activity and broad temperature resistance of amine-imine cobalt precatalysts for butadiene polymerization. Dalton Trans 2023; 52:13146-13153. [PMID: 37655753 DOI: 10.1039/d3dt02460a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
A series of amine-imine cobalt complexes (Co1-Co7) has been prepared and characterized. The complexes Co3, Co4, and Co6 have a distorted tetrahedral geometry, as determined by single crystal X-ray diffraction. In the presence of ethylaluminum sesquichloride (EASC), Co3 exhibited ultra-high activity toward butadiene (Bd) polymerization (up to 7813 kgpolymer mol-1 h-1). The activity is higher than any yet recorded for which yield high cis-1,4 polybutadiene by the well-defined late-transition metal catalytic system. The catalyst also exhibited excellent tolerance towards the ratio of Co/Bd and broad temperature stability. At a ratio of Bd/Co3 = 50 000, the complexes Co1-3 can afford polybutadiene with yields higher than 96% within 2 hours. At -20 °C to 100 °C, the complex Co3 afforded relatively high polymer yields at low catalyst concentrations (Bd/Co3 = 25 000). In addition, all polymers showed a relatively high molecular weight (up to 1.06 × 106 g mol-1).
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Affiliation(s)
- Yuan Fu
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, P.R. China.
| | - Jian Tang
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, P.R. China.
| | - Jing Hua
- Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao 266042, P.R. China.
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3
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Guo L, Li P, Li J, Gong Y, Li X, Liu Y, Yu K, Liu Z. Half-Sandwich Iridium(III), Rhodium(III), and Ruthenium(II) Complexes Chelating Hybrid sp 2-N/sp 3-N Donor Ligands to Achieve Improved Anticancer Selectivity. Inorg Chem 2023; 62:15118-15137. [PMID: 37671819 DOI: 10.1021/acs.inorgchem.3c02118] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
The biological efficacy of half-sandwich platinum group organometallic complexes of the formula [(η5-Cpx)/(η6-arene)M(XY)Cl]0/+ (XY = bidentate ligands; Cpx = functionalized cyclopentadienyl; M = Ir, Rh, Ru, Os) has received considerable attention due to the significance of the metal center, chelating ligand, and Cpx/arene moieties in defining their anticancer potency and selectivity. With a facile access to the BIAN-derived imine-amine ligands using alkylaluminum as the reductant, we herein described the preparation and characterization of 16 half-sandwich Ir(III), Rh(III), and Ru(II) complexes chelating the hybrid sp2-N/sp3-N donor ligand. A nonplanar five-member metallacycle was confirmed by X-ray single-crystal structures of Ir1-Ir3, Ir7, Rh1, Ru1, and Ru4. The attempt to prepare imine-amido complexes using a base as the deprotonating agent led to the mixture of imine-amine complexes, within which the leaving group Cl- was displaced, and 16-electron imine-amido complexes without Cl-. The half-sandwich imine-amine complexes in this system underwent rapid hydrolysis in aqueous solution, exhibited weak photoluminescence, and showed the ability of binding to CT-DNA and BSA. The cytotoxicity of all imine-amine complexes against A549 lung cancer cell lines, HeLa cervical cancer cell lines, and 4T1 mouse breast cancer cells was determined by an MTT assay. The IC50 values of these complexes were in a range of 5.71-67.28 μM. Notably, most of these complexes displayed improved selectivity toward A549 cancer cells versus noncancerous BEAS-2B cells in comparison with the corresponding α-diimine complexes chelating the sp2-N/sp2-N donor ligand, which have been shown no selectivity in our previous report. The anticancer selectivity of these complexes appeared to be related to the redox-based mechanism including the catalytic oxidation of NADH to NAD+, reactive oxygen species (ROS) generation, and depolarization of the mitochondrial membrane. Further, inducing apoptosis of these complexes in A549 cancer cells and BEAS-2B normal cells also correlated with their anticancer selectivity, indicating the apoptosis mode of cell death in this system. In addition, these complexes could enter A549 cells via energy-dependent pathway and were able to impede the in vitro migration of A549 cells.
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Affiliation(s)
- Lihua Guo
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Pengwei Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Jiaxing Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yuwen Gong
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Xiaoyuan Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yiming Liu
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Kaijian Yu
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Zhe Liu
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Colleges and Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
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4
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Dodonov VA, Chen W, Liu L, Sokolov VG, Baranov EV, Skatova AA, Zhao Y, Wu B, Yang XJ, Fedushkin IL. Reactions of Iso(thio)cyanates with Dialanes: Cycloaddition, Reductive Coupling, or Cleavage of the C═S or C═O Bond. Inorg Chem 2021; 60:14602-14612. [PMID: 34551514 DOI: 10.1021/acs.inorgchem.1c01581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The dialanes [(dpp-Bian)Al-Al(dpp-Bian)] (1) and [(dpp-dad)Al(THF)-(THF)Al(dpp-dad)] (2) (dpp-Bian = 1,2-[(2,6-iPr2C6H3)NC]2C12H6, dpp-dad = [(2,6-iPr2C6H3)NC(CH3)]2) react with some isothiocyanates, isocyanates, and diphenylketene via [2 + 4] cycloaddition of the C═O or C═S bond across the C═C-N-Al fragment to afford complexes [L(X═C-Y)Al-Al(X═C-Y)L] with an intact Al-Al single bond (3, L = dpp-Bian, X = PhN, Y = O; 4, L = dpp-Bian, X = Ph2C, Y = O; 6, L = dpp-dad, X = BnN, Y = S; 7, L = dpp-dad, X = tBuN, Y = O; 8, L = dpp-dad, X = iPrN, Y = S; and 9, L = dpp-dad, X = CyN, Y = S). A mixed C═N and C═O mode cycloadduct, [(dpp-Bian)(TosN═C-O)Al-Al(TosN-C═O)(dpp-Bian)] 5, was obtained in the reaction of 1 with tosylisocyanate. Heating the solution of 3 resulted in a thermal transformation and a change of the cycloaddition mode from C═O to C═N to give the product [(dpp-Bian)(PhN-C═O)Al(O)Al(PhN-C═O)(dpp-Bian)] 10. The reduction of 7 and 8 with Na yielded the products [Na(THF)n]2[(dpp-dad-H)(X═C-Y)Al]2 (12, X = iPrN, Y = S, n = 2 and 13, X = tBuN, Y = O, n = 3) in which one of the methyl groups of the backbone of the initial dpp-dad ligand was dehydrogenated. When 2 was reacted with the bulky adamantyl isocyanate AdNCO, the C-C coupling of two substrates occurred to form 14 [(dpp-dad)Al(O═C-NAd)2Al(dpp-dad)] in which the coupled dianionic oxamide ligand bridged two Al atoms in a μ,η4-N,O/N,O mode. Moreover, in the presence of 2.0 equiv of Na metal, precursor 2 reacts with tBuNCS, p-TolylNCS, or Me3SiNCO, possibly through the reduced AlI intermediate, to yield the sulfur- or oxygen-bridged dimer [Na(solv)n]2[(dpp-dad)Al(μ-E)]2 (15, E = S, solv = THF, n = 3 and 16, E = O, solv = DME, n = 2) upon C═S or C═O bond cleavage. Dialane 1 reacts with dimethylsulfone to give a Lewis adduct [(dpp-Bian)(Me2SO2)Al]2 (17), which releases dimethylsulfone upon heating. The diamagnetic compounds 3-10 and 12-17 were characterized by NMR and IR spectroscopy. The molecular structures of 3-17 were established by single-crystal X-ray diffraction analysis. Electronic structures of the compounds and possible isomers have been examined by DFT calculations.
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Affiliation(s)
- Vladimir A Dodonov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences (IOMC RAS), Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Weixing Chen
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Li Liu
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Vladimir G Sokolov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences (IOMC RAS), Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Evgeny V Baranov
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences (IOMC RAS), Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Alexandra A Skatova
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences (IOMC RAS), Tropinina 49, Nizhny Novgorod 603950, Russian Federation
| | - Yanxia Zhao
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Biao Wu
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Xiao-Juan Yang
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Igor L Fedushkin
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences (IOMC RAS), Tropinina 49, Nizhny Novgorod 603950, Russian Federation.,College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
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5
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Moskalev MV, Razborov DA, Skatova AA, Bazanov AA, Fedushkin IL. Alkali Metal Reduction of 1,2‐Bis[(2,6‐dibenzhydryl‐4‐methylphenyl)imino]acenaphthene (Ar
BIG
‐bian) to Radical‐Anion. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202000909] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mikhail V. Moskalev
- G.A. Razuvaev Institute of Organometallic Chemistry Russian Academy of Sciences Tropinina Str. 49 603137 Nizhny Novgorod Russian Federation
| | - Danila A. Razborov
- G.A. Razuvaev Institute of Organometallic Chemistry Russian Academy of Sciences Tropinina Str. 49 603137 Nizhny Novgorod Russian Federation
| | - Alexandra A. Skatova
- G.A. Razuvaev Institute of Organometallic Chemistry Russian Academy of Sciences Tropinina Str. 49 603137 Nizhny Novgorod Russian Federation
| | - Andrey A. Bazanov
- G.A. Razuvaev Institute of Organometallic Chemistry Russian Academy of Sciences Tropinina Str. 49 603137 Nizhny Novgorod Russian Federation
| | - Igor L. Fedushkin
- G.A. Razuvaev Institute of Organometallic Chemistry Russian Academy of Sciences Tropinina Str. 49 603137 Nizhny Novgorod Russian Federation
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6
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Nikolaevskaya E, Druzhkov N, Syroeshkin M, Egorov M. Chemistry of diazadiene type ligands with extra coordination groups. Prospects of reactivity. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213353] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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7
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Xiao L, Chen W, Shen L, Liu L, Xue Y, Zhao Y, Yang XJ. Reduction of carbodiimides by a dialumane through insertion and cycloaddition. Chem Commun (Camb) 2020; 56:6352-6355. [DOI: 10.1039/d0cc02048f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dialumane reacts with carbodiimides, RNCNR (R = Cy, iPr, dipp, tBu), through insertion, [2+4] cycloaddition and a hydrogen transfer process.
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Affiliation(s)
- Lin Xiao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
| | - Weixing Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
| | - Lingyi Shen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
| | - Li Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
| | - Yujie Xue
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
| | - Yanxia Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
| | - Xiao-Juan Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi’an 710069
- China
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8
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Parker BF, Hosoya H, Arnold J, Tsurugi H, Mashima K. α-Diimine-Niobium Complex-Catalyzed Deoxychlorination of Benzyl Ethers with Silicon Tetrachloride. Inorg Chem 2019; 58:12825-12831. [PMID: 31498599 DOI: 10.1021/acs.inorgchem.9b01784] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
α-Diimine niobium complexes serve as catalysts for deoxygenation of benzyl ethers by silicon tetrachloride (SiCl4) to cleanly give two equivalents of the corresponding benzyl chlorides, where SiCl4 has the dual function of oxygen scavenger and chloride source with the formation of a silyl ether or silica as the only byproduct. The reaction mechanism has two successive trans-etherification steps that are mediated by the niobium catalyst, first forming one equivalent of benzyl chloride along with the corresponding silyl ether intermediate that undergoes the same reaction pathway to give the second equivalent of benzyl chloride and silyl ether.
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Affiliation(s)
- Bernard F Parker
- Department of Chemistry, Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan.,Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Hiromu Hosoya
- Department of Chemistry, Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan
| | - John Arnold
- Department of Chemistry , University of California , Berkeley , California 94720 , United States
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science , Osaka University , Toyonaka , Osaka 560-8531 , Japan
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9
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Duraisamy R, Liebing P, Harmgarth N, Lorenz V, Hilfert L, Busse S, Engelhardt F, Edelmann FT. The Manifold Structural Chemistry of Alkali Metal Enediamide Complexes. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ramesh Duraisamy
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Phil Liebing
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Nicole Harmgarth
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Volker Lorenz
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Liane Hilfert
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Sabine Busse
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Felix Engelhardt
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
| | - Frank T. Edelmann
- Chemisches Institut der Otto‐von‐Guericke‐Universität Magdeburg Universitätsplatz 2 D‐39106 Magdeburg Germany
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10
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Kissel’ AA, Lyubov DM, Cherkasov AV, Trifonov AA. Hydrogenation of C=C and C=N Bonds of the Amide-Imine Ligand in the Metal Coordination Sphere in the Reaction of Yttrium Bis(alkyl) Complex [2,6-iso-Pr2C6H3NC(=CH2)C(Me)=NC6H3-iso-Pr2-2,6]Y(CH2SiMe3)2(THF) with Molecular Hydrogen. RUSS J COORD CHEM+ 2019. [DOI: 10.1134/s1070328419040043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Haeri HH, Duraisamy R, Harmgarth N, Liebing P, Lorenz V, Hinderberger D, Edelmann FT. Electronic and Geometric Structures of Paramagnetic Diazadiene Complexes of Lithium and Sodium. ChemistryOpen 2018; 7:701-708. [PMID: 30202705 PMCID: PMC6123648 DOI: 10.1002/open.201800114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Indexed: 11/08/2022] Open
Abstract
The electronic and molecular structures of the lithium and sodium complexes of 1,4-bis(2,6-diisopropylphenyl)-2,3-dimethyl-1,4-diazabutadiene (Me2DADDipp) were fully characterized by using a multi-frequency electron paramagnetic resonance (EPR) spectroscopy approach and crystallography, together with density functional theory (DFT) calculations. EPR measurements, using T1 relaxation-time-filtered pulse EPR spectroscopy, revealed the diagonal elements of the A and g tensors for the metal and ligand sites. It was found that the central metals in the lithium complexes had sizable contributions to the SOMO, whereas this contribution was less strongly observed for the sodium complex. Such strong contributions were attributed to structural specifications (e.g. geometrical data and atomic size) rather than electronic effects.
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Affiliation(s)
- Haleh H. Haeri
- Institute of ChemistryMartin Luther University Halle-WittenbergVon-Danckelmann-Platz 406120HalleGermany
| | - Ramesh Duraisamy
- Institute of ChemistryOtto-von-Guericke UniversityMagdeburg39106Germany
| | - Nicole Harmgarth
- Institute of ChemistryOtto-von-Guericke UniversityMagdeburg39106Germany
| | - Phil Liebing
- Laboratory for Inorganic ChemistryETH ZürichVladimir-Prelog-Weg 28093ZürichSwitzerland
| | - Volker Lorenz
- Institute of ChemistryOtto-von-Guericke UniversityMagdeburg39106Germany
| | - Dariush Hinderberger
- Institute of ChemistryMartin Luther University Halle-WittenbergVon-Danckelmann-Platz 406120HalleGermany
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12
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Klementyeva SV, Petrov PA, Starikova AA, Konchenko SN. Erbium Mixed-Ligand β-Diketiminato-Diamido Complex: Unusual Structure of Diamide Ligand. ChemistrySelect 2018. [DOI: 10.1002/slct.201703168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Svetlana V. Klementyeva
- Razuvaev Institute of Organometallic Chemistry; Russian Academy of Sciences; Tropinina Str. 49 603137 Nizhny Novgorod Russian Federation
- Nikolaev Institute of Inorganic Chemistry SB RAS; Lavrentieva Av. 3 630090 Novosibirsk Russian Federation
| | - Pavel A. Petrov
- Nikolaev Institute of Inorganic Chemistry SB RAS; Lavrentieva Av. 3 630090 Novosibirsk Russian Federation
- Novosibirsk State University; Pirogova Str. 2 630090 Novosibirsk Russian Federation
| | - Alyona A. Starikova
- Institute of Physical and Organic Chemistry; Southern Federal University; Stachka Ave. 194/2 344090 Rostov-on-Don Russian Federation
| | - Sergey N. Konchenko
- Nikolaev Institute of Inorganic Chemistry SB RAS; Lavrentieva Av. 3 630090 Novosibirsk Russian Federation
- Novosibirsk State University; Pirogova Str. 2 630090 Novosibirsk Russian Federation
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13
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Jakhar VK, Barman MK, Nembenna S. Aluminum Monohydride Catalyzed Selective Hydroboration of Carbonyl Compounds. Org Lett 2016; 18:4710-3. [PMID: 27571142 DOI: 10.1021/acs.orglett.6b02310] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The well-defined aluminum monohydride compound [{(2,4,6-Me3-C6H2)NC(Me)}2(Me)(H)]AlH·(NMe2Et) (1) catalyzes hydroboration of a wide range of aldehydes and ketones under mild reaction conditions. Moreover, compound 1 displayed chemoselective hydroboration of aldehydes over ketones at rt.
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Affiliation(s)
- Vineet Kumar Jakhar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 752 050, India
| | - Milan Kr Barman
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 752 050, India
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 752 050, India
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Kissel AA, Mahrova TV, Lyubov DM, Cherkasov AV, Fukin GK, Trifonov AA, Del Rosal I, Maron L. Metallacyclic yttrium alkyl and hydrido complexes: synthesis, structures and catalytic activity in intermolecular olefin hydrophosphination and hydroamination. Dalton Trans 2015; 44:12137-48. [PMID: 25710900 DOI: 10.1039/c5dt00129c] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Metallacyclic neutral and ionic yttrium alkyl complexes coordinated by a dianionic ene-diamido ligand ([2,6-iPr2C6H3NC(Me)=C(Me)NC6H3iPr2-2,6] = L(1)) [L(1)]Y(CH2SiMe3)(THF)2 (2), {[L(1)]Y(CH2SiMe3)2}(-){Li(THF)4}(+) (3), [L(1)]Y(OEt2)(μ-Me)2Li(TMEDA) (4) were synthesized using a salt-metathesis approach starting from the related chloro complex [L(1)]Y(THF)2(μ-Cl)2Li(THF)2 (1) in 70, 85 and 72% yields respectively. The reactions of 2 with H2 or PhSiH3 afford the dimeric hydride {[L(1)]Y(THF)(μ-H)}2(μ-THF) (5) containing two μ-bridging hydrido and one μ-bridging THF ligands (91 and 85% yields). The X-ray studies of complexes 2, 3 and 5 revealed η(2)-coordination of the C=C fragment of an ene-diamido ligand to a Y cation. DFT calculations were carried out to give an insight into the metal-ligand bonding and especially the interaction between the metal and the ene-diamido ligand. The observed bonding of the ene-diamido fragment is found to reflect the acidity of the metal center in the complex that is partially overcome by a better donation from the double bond (better overlap with an empty d orbital at the yttrium center). The treatment of complex 4 with DME resulted in the C-O bond cleavage of DME and afforded a three nuclear methoxide oxide complex [{[L(1)]Y}3(μ(2)-OMe)3(μ(3)-O)](2-)[Li(DME)3](+)2 (6). Complexes 2, 3, 5 and 7 proved to be efficient precatalysts for the intermolecular hydrophosphination of styrene, 4-vinylpyridine, and 1-nonene with PhPH2 and Ph2PH as well as hydroamination of styrene and pyrrolidine.
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Affiliation(s)
- Alexander A Kissel
- G. A. Razuvaev Institute of Organometallic Chemistry of Russian Academy of Sciences, Tropinina str. 49, 603950 Nizhny Novgorod, GSP-445, Russia.
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Bennae KT, Powell DR, Wehmschulte RJ. Lewis base adducts of diisobutylaluminum azide: synthesis and thermal stability. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1044447] [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]
Affiliation(s)
- Kenneth T. Bennae
- Department of Chemistry, Florida Institute of Technology, Melbourne, FL, USA
| | - Douglas R. Powell
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, USA
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Anga S, Naktode K, Adimulam H, Panda TK. Titanium and zirconium complexes of the N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-butadiene ligand: syntheses, structures and uses in catalytic hydrosilylation reactions. Dalton Trans 2015; 43:14876-88. [PMID: 25177841 DOI: 10.1039/c4dt02013h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here a number of dianionic 1,4-diaza-1,3-butadiene complexes of titanium and zirconium synthesised by a salt metathesis reaction. The reaction of either CpTiCl3 or Cp2TiCl2 with the dilithium salt of N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene [; abbreviated (Dipp)2DADLi2] afforded the mono-cyclopentadienyl titanium complex [η(5)-CpTi((Dipp)2DAD)Cl] () bearing a dianionic ene-diamide ligand, while the analogous reaction of zirconocene dichloride (Cp2ZrCl2) with the dilithium salt gave the bis-cyclopentadienyl zirconium complex [Cp2Zr{(Dipp)2DAD}] (). The metal dichloride complexes [Ti((Dipp)2DAD)Cl2] () and [{(Dipp)2DADZrCl(μ-Cl)}2(κ(3)-Cl)(Li)(OEt2)2] () were obtained by the reaction of and anhydrous metal tetrachloride in a 1 : 1 molar ratio in diethyl ether at room temperature. Meanwhile, the homoleptic titanium complex [Ti{((Dipp)2DAD)}2] () was isolated in good yield by the treatment of with TiCl4 in a 1 : 2 molar ratio in diethyl ether. The complexes and were further reacted with neosilyl lithium to afford mono- and bis-alkyl complexes of titanium [η(5)-CpTi{(Dipp)2DAD}(CH2SiMe3)] () and zirconium [Zr{(Dipp)2DAD}(CH2SiMe3)2] () respectively. Molecular structures of the complexes , , and in the solid states were confirmed by single crystal X-ray diffraction analysis. The solid state structures of all the complexes reveal that the metal ions are chelated through the amido-nitrogen atoms and the olefinic carbons of the [(Dipp)2DAD](2-) moiety, satisfying the σ(2),π coordination mode. Compound was used as a catalyst for the intermolecular hydrosilylation reaction of a number of olefins, and moderate activity of catalyst was observed.
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Affiliation(s)
- Srinivas Anga
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram 502205, Telangana State, India.
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Zhang C, Pan H, Klosin J, Tu S, Jaganathan A, Fontaine PP. Synthetic Optimization and Scale-Up of Imino–Amido Hafnium and Zirconium Olefin Polymerization Catalysts. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chunming Zhang
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Heqi Pan
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Jerzy Klosin
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Siyu Tu
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Arvind Jaganathan
- Corporate R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Philip P. Fontaine
- Performance Plastics R&D, The Dow Chemical Company, Freeport, Texas 77541, United States
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Chia SP, Li Y, Ganguly R, So CW. Heteroleptic Germanium(II) and Tin(II) Chlorides Supported by Anionic Ligands Derived from 2,3-Dimethyl-1,4-diaza-1,3-butadiene. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300830] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lorenz V, Hrib CG, Grote D, Hilfert L, Krasnopolski M, Edelmann FT. Diazadiene Complexes of the Heavy Alkaline-Earth Metals Strontium and Barium: Structures and Reactivity. Organometallics 2013. [DOI: 10.1021/om400622d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Volker Lorenz
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
| | - Cristian G. Hrib
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
| | | | - Liane Hilfert
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
| | | | - Frank T. Edelmann
- Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg,
Germany
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Li J, Zhang K, Huang H, Yu A, Hu H, Cui H, Cui C. Synthesis and Reactions of a Redox-Active α-Diimine Aluminum Complex. Organometallics 2013. [DOI: 10.1021/om300920y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
| | - Kun Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
| | - Hanmin Huang
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
| | - Ao Yu
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
| | - Hongfan Hu
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
| | - Haiyan Cui
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s
Republic of China
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Kissel AA, Lyubov DM, Mahrova TV, Fukin GK, Cherkasov AV, Glukhova TA, Cui D, Trifonov AA. Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido–imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization. Dalton Trans 2013; 42:9211-25. [DOI: 10.1039/c3dt33108c] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Panda TK, Kaneko H, Michel O, Pal K, Tsurugi H, Törnroos KW, Anwander R, Mashima K. Dianion and Monoanion Ligation of 1,4-Diaza-1,3-butadiene to Barium, Strontium, and Calcium. Organometallics 2012. [DOI: 10.1021/om300054h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tarun K. Panda
- Department
of Chemistry, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka
560-8531, Japan
- Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram
502205, Andhra Pradesh, India
| | - Hiroshi Kaneko
- Department
of Chemistry, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka
560-8531, Japan
| | - Olaf Michel
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Kuntal Pal
- Department
of Chemistry, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka
560-8531, Japan
| | - Hayato Tsurugi
- Department
of Chemistry, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka
560-8531, Japan
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Reiner Anwander
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
- Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle
18, 72076 Tübingen, Germany
| | - Kazushi Mashima
- Department
of Chemistry, Graduate School of Engineering
Science, Osaka University, Toyonaka, Osaka
560-8531, Japan
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23
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Gao H, Hu H, Zhu F, Wu Q. A thermally robust amine–imine nickel catalyst precursor for living polymerization of ethylene above room temperature. Chem Commun (Camb) 2012; 48:3312-4. [DOI: 10.1039/c2cc17154f] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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