1
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Sinitsa DK, Pylova EK, Mironova OA, Bashirov DA, Ryadun AA, Sukhikh TS, Konchenko SN. Lanthanide complexes with a new luminescent iminophosphonamide ligand bearing phenylbenzothiazole substituents. Dalton Trans 2024; 53:2181-2192. [PMID: 38192261 DOI: 10.1039/d3dt03511e] [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
A new iminophosphonamine Ph2P(HNPbt)(NPbt) (1, HL) bearing chromophore 2-(phen-2'-yl)-1,3-benzothiazole (Pbt) substituents was synthesized and introduced into lanthanide complexes. It was found that salt metathesis reactions between KL (2) generated in situ and LnCl3 lead to the formation of tris-iminophosphonamide complexes [LnL2]L (Ln = Y (3), Sm (4), Gd (5), Dy (6)), regardless of the 2/LnCl3 ratio. Compounds 3-6 consist of a cationic fragment [LnL2]+, where the lanthanide atom is surrounded by two rigidly κ4-coordinated ligands, and an L- anion residing in the outer coordination sphere. Iminophosphonamine 1 shows a rare excitation wavelength-dependent two-band luminescence in the solid state. For compounds containing the deprotonated form, namely potassium salt KL and complexes of Gd and Dy, a single-band luminescence with the color changing from turquoise to orange was observed. The Sm complex reveals a set of a few narrow well-resolved bands corresponding to the f-f transitions against the background of the outer-sphere ligand's emission.
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Affiliation(s)
- Dmitry K Sinitsa
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
| | - Ekaterina K Pylova
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
- Department of Natural Sciences, National Research University-Novosibirsk State University, 630090 Novosibirsk, Russia
- Institute Charles Gerhardt Montpellier, National School of Chemistry Montpellier, University of Montpellier, CNRS, ENSCM, 34000 Montpellier, France
| | - Olga A Mironova
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
| | - Denis A Bashirov
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
| | - Alexey A Ryadun
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
| | - Taisiya S Sukhikh
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
| | - Sergey N Konchenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, Akademika Lavrentieva Ave. 3, 630090 Novosibirsk, Russia.
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2
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Li Y, Chen P, Zhu Q, Zhu C. Magnesium complexes supported by a dianionic double layer nitrogen-phosphorus ligand: a synthesis and reactivity study. Dalton Trans 2023; 52:15467-15474. [PMID: 37486332 DOI: 10.1039/d3dt01657a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
A heterobimetallic complex [MeN(CH2CH2NPiPr)2MgLiCl(THF)]2 (1) supported by a dianionic double layer nitrogen-phosphorus ligand was synthesized by the reaction of H2L1 (H2L1 = MeN(CH2CH2NHPiPr)2) with MgCl2 in the presence of n-BuLi. Reactions of complex 1 with 2 equivalents of CuI, AgI and AuCl·SMe2 led to the formation of heterobimetallic clusters [MeN(CH2CH2NPiPr)2MgCuI]2 (2), [MeN(CH2CH2NPiPr)2MgAgI]2 (3) and [MeN(CH2CH2NPiPr)2MgAuCl]2 (4), respectively. X-ray single-crystal diffraction analysis revealed that these complexes are dimers, which are composed of two [MeN(CH2CH2NPiPr)2Mg] units connected by coinage metals (i.e., Cu, Ag, and Au). The reactivity of 1 was further investigated and it was found that complex 1 could react with 4 equivalents of MeI, giving a complex [CH3N(CH2CH2NPiPr2Me)2MgI]+[I]- (5), which can be viewed as a magnesium complex supported by a neutral double layer nitrogen-phosphorus ligand (CH3N(CH2CH2NPiPr2Me)2). Complex 1 could also react with 2 equivalents of NaNH2, leading to the isolation of an amido anion bridged magnesium-sodium heterobimetallic cluster [MeN(CH2CH2NPiPr)2MgNaNH2]2 (6).
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Affiliation(s)
- Yafei Li
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Pengfei Chen
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Qin Zhu
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
| | - Congqing Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
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3
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Jin X, Wang G, Zhou M. Mg(I)-Fe(-II) and Mg(0)-Mg(I) covalent bonding in the Mg nFe(CO) 4- ( n = 1, 2) anion complexes: an infrared photodissociation spectroscopic and theoretical study. Phys Chem Chem Phys 2023; 25:7697-7703. [PMID: 36866694 DOI: 10.1039/d2cp05719k] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Heteronuclear magnesium-iron carbonyl anion complexes MgFe(CO)4- and Mg2Fe(CO)4- are produced in the gas phase and are detected by mass-selected infrared photodissociation spectroscopy in the carbonyl stretching frequency region. The geometric structures and the metal-metal bonding are discussed with the aid of quantum chemical calculations. Both complexes are characterized to have a doublet electronic ground state with C3v symmetry containing a Mg-Fe bond or a Mg-Mg-Fe bonding unit. Bonding analyses indicate that each complex involves an electron-sharing Mg(I)-Fe(-II) σ bond. The Mg2Fe(CO)4- complex involves a relatively weak covalent Mg(0)-Mg(I) σ bond.
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Affiliation(s)
- Xiaoyang Jin
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University Shanghai, Shanghai 200438, China.
| | - Guanjun Wang
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University Shanghai, Shanghai 200438, China.
| | - Mingfei Zhou
- Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University Shanghai, Shanghai 200438, China.
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4
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Burnett S, de Vere-Tucker M, Davitt M, Cordes DB, Slawin AMZ, Ferns R, van Mourik T, Stasch A. Magnesium Complexes with Isomeric Pyrazol‐4‐ylidene and Imidazol‐2‐ylidene Ligands. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Andreas Stasch
- University of St Andrews School of Chemistry North Haugh KY169ST St Andrews UNITED KINGDOM
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5
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Liu TT, Zhai DD, Guan BT, Shi ZJ. Nitrogen fixation and transformation with main group elements. Chem Soc Rev 2022; 51:3846-3861. [PMID: 35481498 DOI: 10.1039/d2cs00041e] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrogen fixation is essential for the maintenance of life and development of society, however, the large bond dissociation energy and nonpolarity of the triple bond constitute a considerable challenge. The transition metals, by virtue of their combination of empty and occupied d orbitals, are prevalent in the nitrogen fixation studies and are continuing to receive a significant focus. The main group metals have always been considered incapable in dinitrogen activation owing to the absence of energetically and symmetrically accessible orbitals. The past decades have witnessed significant breakthroughs in the dinitrogen activation with the main group elements and compounds via either matrix isolation, theoretical calculations or synthetic chemistry. The successful reactions of the low-valent species of the main group elements with inert dinitrogen have been reported via the π back-donation from either the d orbitals (Ca, Sr, Ba) or p orbitals (Be, B, C…). Herein, the significant achievements have been briefly summarized, along with predicting the future developments.
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Affiliation(s)
- Tong-Tong Liu
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Dan-Dan Zhai
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Bing-Tao Guan
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
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6
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Karmakar H, Anga S, Panda TK, Chandrasekhar V. Aluminium alkyl complexes supported by imino-phosphanamide ligand as precursors for catalytic guanylation reactions of carbodiimides. RSC Adv 2022; 12:4501-4509. [PMID: 35425514 PMCID: PMC8981115 DOI: 10.1039/d2ra00242f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 01/13/2023] Open
Abstract
Herein, we report the synthesis, characterisation, and application of three aluminium alkyl complexes, [κ2-{NHIRP(Ph)NDipp}AlMe2] (R = Dipp (2a), Mes (2b); tBu (2c), Dipp = 2,6-diisopropylphenyl, Mes = mesityl, and tBu = tert-butyl), supported by unsymmetrical imino-phosphanamide [NHIRP(Ph)NDipp]− [R = Dipp (1a), Mes (1b), tBu (1c)] ligands as molecular precursors for the catalytic synthesis of guanidines using carbodiimides and primary amines. All the imino-phosphanamide ligands 1a, 1b and 1c were prepared in good yield from the corresponding N-heterocyclic imine (NHI) with phenylchloro-2,6-diisopropylphenylphosphanamine, PhP(Cl)NHDipp. The aluminium alkyl complexes 2a, 2b and 2c were obtained in good yield upon completion of the reaction between trimethyl aluminium and the protic ligands 1a, 1b and 1c in a 1 : 1 molar ratio in toluene via the elimination of methane, respectively. The molecular structures of the protic ligands 1b and 1c and the aluminium complexes 2a, 2b and 2c were established via single-crystal X-ray diffraction analysis. Complexes 2a, 2b and 2c were tested as pre-catalysts for the hydroamination/guanylation reaction of carbodiimides with aryl amines to afford guanidines at ambient temperature. All the aluminium complexes exhibited a high conversion with 1.5 mol% catalyst loading and broad substrate scope with a wide functional group tolerance during the guanylation reaction. We also proposed the most plausible mechanism, involving the formation of catalytically active three-coordinate Al species as the active pre-catalyst. Three aluminium alkyl complexes, [κ2-{ImRNP(Ph)NDipp}AlMe2] (2a–2c), supported by unsymmetrical imino-phosphanamide were synthesised and utilised as competent precatalysts for the hydroamination of carbodiimides under ambient conditions.![]()
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Affiliation(s)
- Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Srinivas Anga
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, 500107, Hyderabad, India
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, 500107, Hyderabad, India
- Department of Chemistry, IIT Kanpur, Kanpur 208016, India
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7
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Anga S, Karmakar H, Panda TK, Chandrasekhar V. Alkali metal complexes of an unsymmetrical imino–phosphanamidinate (N-P-N) ligand. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Liu HY, Schwamm RJ, Neale SE, Hill MS, McMullin CL, Mahon MF. Reductive Dimerization of CO by a Na/Mg(I) Diamide. J Am Chem Soc 2021; 143:17851-17856. [PMID: 34652134 PMCID: PMC8554760 DOI: 10.1021/jacs.1c09467] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Indexed: 12/30/2022]
Abstract
Sodium reduction of [{SiNDipp}Mg] [{SiNDipp} = {CH2SiMe2N(Dipp)}2; Dipp = 2,6-i-Pr2C6H3] provides the Mg(I) species, [{SiNDipp}MgNa]2, in which the long Mg-Mg bond (>3.2 Å) is augmented by persistent Na-aryl interactions. Computational assessment indicates that this molecule is best considered to comprise a contiguous tetrametallic core, a viewpoint borne out by its reaction with CO, which results in ethynediolate formation mediated by the dissimilar metal centers.
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Affiliation(s)
- Han-Ying Liu
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
| | - Ryan J. Schwamm
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
| | - Samuel E. Neale
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
| | - Michael S. Hill
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
| | - Claire L. McMullin
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
| | - Mary F. Mahon
- Department
of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K.
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9
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Zhang R, Wang Y, Zhao Y, Redshaw C, Fedushkin IL, Wu B, Yang XJ. Main-group metal complexes of α-diimine ligands: structure, bonding and reactivity. Dalton Trans 2021; 50:13634-13650. [PMID: 34519747 DOI: 10.1039/d1dt02120f] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
α-Diimine ligands, in particular 1,4-diazabutadiene (dad) and bis(iminoacenaphthene) (bian) derivatives, have been widely used for coordination with various metals, including main-group, transition, and lanthanide and actinide metals. In addition to their tunable steric and electronic properties, the dad and bian ligands are redox-active and can readily accept one or two electrons, converting into the radical-anionic (L˙-) or dianionic (enediamido, L2-) form, respectively. This non-innocence brings about rich electronic structures and properties of the ligands and complexes thereof. For example, the dad ligands in their three redox levels can effectively stabilize a series of metal centers in different oxidation states, including low-valent metals. Moreover, these ligands can serve as electron reservoirs and can participate in reactions toward other molecules with or without metals. Therefore, such ligands are extremely useful in the areas of low-valent complexes and small molecule activation. Herein, we will discuss the use of dad (and bian) ligands in the stabilization of metal-metal-bonded compounds, in particular those of main-group metals, as well as small molecule activation by these (low-valent) metal coordination species where the non-innocence of the ligands plays a key role.
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Affiliation(s)
- Rong Zhang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China.
| | - Yanchao Wang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China.
| | - Yanxia Zhao
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Carl Redshaw
- Plastics Collaboratory, Department of Chemistry, University of Hull, Cottingham Road, Hull, UK
| | - Igor L Fedushkin
- College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China.,G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 603950 Nizhny Novgorod, Tropinina str. 49, Russian Federation
| | - Biao Wu
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China.
| | - Xiao-Juan Yang
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China. .,College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
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10
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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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11
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Rösch B, Harder S. New horizons in low oxidation state group 2 metal chemistry. Chem Commun (Camb) 2021; 57:9354-9365. [PMID: 34528959 DOI: 10.1039/d1cc04147a] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Since the seminal report on Mg in the +I oxidation state in 2007, low-valent complexes featuring a MgI-MgI bond developed from trophy molecules to state-of-the-art reducing agents. Despite increasing interest in low-valency of the other group 2 metals, this area was restricted for a long time to a rare example of a CaI(arene)CaI inverse sandwich. This feature article focuses on the most recent developments in the field, highlighting recent breakthroughs for Be, Mg and Ca. The more exotic metal Be was the first to be isolated as a zero-valent complex which could be oxidized to a BeI species. There also has been interest in breaking the MgI-MgI bond with superbulky β-diketiminate ligands (BDI) that suppress (BDI)Mg-Mg(BDI) bond formation. This led to Mg-Mg bond elongation or Mg-N bond cleavage. Several reports on attempts to isolate (BDI)Mg˙ radicals by combinations of ligand bulk, addition of neutral ligands or UV(vis) irradiation led to reduction of the aromatic solvents, underscoring the high reactivity of these open shell species. Only recently, zero-valent complexes of Mg were introduced. Double reduction of a (BDI)MgI complex with Na gave [(BDI)Mg-]Na+. This Mg0 complex crystallized as a dimer in which the Na+ cations bridge the two (BDI)Mg- anions which react as Mg nucleophiles. Thermal decomposition led to spontaneous formation of Na0 and a trinuclear (BDI)MgMgMg(BDI) complex. This mixed-valence Mg3-complex is a prime example of the fleeting multinuclear Mgn intermediates discussed on the way from Mg metal to Grignard reagent. Attempts to prepare low-valent CaI compounds by reduction of (BDI)CaI led to dearomatization of the arene solvents: (BDI)Ca(arene)Ca(BDI). Reduction in alkanes prevented this decomposition pathway but led to N2 reduction and isolation of (BDI)Ca(N2)Ca(BDI), representing the first example of molecular nitrogen fixation with an early main group metal. As the N22- anion reacts in most cases as a very strong two-electron reductant, LCa(N2)CaL could be seen as a synthon for hitherto elusive CaI-CaI complexes. Theoretical calculations suggest that participation of Ca d-orbitals is relevant for N2 activation. These most recent developments in low-valent group 2 metal chemistry will revive this area and undoubtly lead to new reactivities and applications.
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Affiliation(s)
- Bastian Rösch
- Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany.
| | - Sjoerd Harder
- Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany.
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12
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Anga S, Acharya J, Chandrasekhar V. An Unsymmetric Imino-Phosphanamidinate Ligand and its Y(III) Complex: Synthesis, Characterization, and Catalytic Hydroboration of Carbonyl Compounds. J Org Chem 2021; 86:2224-2234. [PMID: 33290079 DOI: 10.1021/acs.joc.0c02383] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An imino-phosphanamide ligand, [NHIiPr2Me2P(Ph)NH-2,6-iPr2C6H3] (LH), containing two different N-substituents was prepared by the direct reaction of the lithium salt of N-heterocyclic imine (NHI) with phenylchloro-2,6-diisopropylphenyl phosphanamine, PhP(Cl)NH-2,6-iPr2-C6H3. Reaction of LH with Y(N(SiMe3)2)3 afforded the heteroleptic complex, [{L}Y(N(SiMe3)2)2] (1), by elimination of HN(SiMe3)2. Compound 1 was characterized by multinuclear NMR and X-ray crystallography. In the complex, the Y(III) center was found to be tetracoordinate in a distorted tetrahedral geometry. The ligand, imino-phosphanamidinate, [L]-, functions in a chelating manner, and its coordination to Y(III) results in a distorted 4-membered YPN2 ring. As a proof of principle of its activity, 1 was used as a precatalyst for the hydroboration of various aldehydes and ketones using HBpin as the hydrogen source. The hydroboration reaction was rapid and clean even with low catalyst loadings (0.01-0.1 mol %). In addition, a very good functional group tolerance was observed in these reactions.
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Affiliation(s)
- Srinivas Anga
- Tata Institute of Fundamental Research Hyderabad, Gopanpally 500046, Hyderabad, India
| | - Joydev Acharya
- Tata Institute of Fundamental Research Hyderabad, Gopanpally 500046, Hyderabad, India.,Department of Chemistry, IIT Kanpur, Kanpur 208016, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally 500046, Hyderabad, India.,Department of Chemistry, IIT Kanpur, Kanpur 208016, India
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13
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Goswami B, Feuerstein TJ, Yadav R, Köppe R, Lebedkin S, Kappes MM, Roesky PW. Enantiopure Calcium Iminophosphonamide Complexes: Synthesis, Photoluminescence, and Catalysis. Chemistry 2021; 27:4401-4411. [PMID: 33355402 PMCID: PMC7986735 DOI: 10.1002/chem.202004833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/21/2020] [Indexed: 11/09/2022]
Abstract
The synthesis of calcium complexes ligated by three different chiral iminophosphonamide ligands, L-H (L=[Ph2 P{N(R)CH(CH3 )Ph}2 ]), L'-H (L'=[Ph2 P{NDipp}{N(R)CH(CH3 )Ph}]), (Dipp=2,6-i Pr2 C6 H3 ), and L''-H (L''=[Ph2 P{N(R)CH(CH3 )naph}2 ]), (naph=naphthyl) is presented. The resulting structures [L2 Ca], [L'2 Ca], and [L''2 Ca] represent the first examples of enantiopure homoleptic calcium complexes based on this type of ligands. The calcium complexes show blue-green photoluminescence (PL) in the solid state, which is especially bright at low temperatures. Whereas the emission of [L''2 Ca] is assigned to the fluorescence of naphthyl groups, the PL of [L2 Ca] and [L'2 Ca] is contributed by long-lived phosphorescence and thermally activated delayed fluorescence (TADF), with a strong variation of the PL lifetimes over the temperature range of 5-295 K. Furthermore, an excellent catalytic activity was found for these complexes in hydroboration of ketones at room temperature, although no enantioselectivity was achieved.
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Affiliation(s)
- Bhupendra Goswami
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Thomas J Feuerstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Ravi Yadav
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Sergei Lebedkin
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Manfred M Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 2, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
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14
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Wang W, Wang J, Gong C, Mu C, Zhang D, Zhang X. Designer Mg−Mg and Zn−Zn single bonds facilitated by double aromaticity in the M2B7− (M=Mg, Zn) clusters. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp2004057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Wei Wang
- Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jie Wang
- Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Chu Gong
- Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Chaonan Mu
- Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Dongmei Zhang
- Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xinxing Zhang
- Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin 300071, China
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15
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Lawrence SR, Ohlin CA, Cordes DB, Slawin AMZ, Stasch A. Hydrocarbon-soluble, hexaanionic fulleride complexes of magnesium. Chem Sci 2019; 10:10755-10764. [PMID: 32055382 PMCID: PMC6993810 DOI: 10.1039/c9sc03857d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/06/2019] [Indexed: 11/21/2022] Open
Abstract
Fullerene C60 reacts with dimagnesium(i) compounds LMgMgL, where L is a monoanionic β-diketiminate ligand, to contact ion complexes [(LMg)nC60], where n is predominantly 2, 4 or 6.
The reaction of the magnesium(i) complexes [{(Arnacnac)Mg}2], (Arnacnac = HC(MeCNAr)2, Ar = Dip (2,6-iPr2C6H3), Dep (2,6-Et2C6H3), Mes (2,4,6-Me3C6H2), Xyl (2,6-Me2C6H3)) with fullerene C60 afforded a series of hydrocarbon-soluble fulleride complexes [{(Arnacnac)Mg}nC60], predominantly with n = 6, 4 and 2. 13C{1H} NMR spectroscopic studies show both similarities (n = 6) and differences (n = 4, 2) to previously characterised examples of fulleride complexes and materials with electropositive metal ions. The molecular structures of [{(Arnacnac)Mg}nC60] with n = 6, 4 and 2 can be described as inverse coordination complexes of n [(Arnacnac)Mg]+ ions with C60n– anions showing predominantly ionic metal–ligand interactions, and include the first well-defined and soluble complexes of the C606– ion. Experimental studies show the flexible ionic nature of the {(Arnacnac)Mg}+···C606– coordination bonds. DFT calculations on the model complex [{(Menacnac)Mg}6C60] (Menacnac = HC(MeCNMe)2) support the formulation as an ionic complex with a central C606– anion and comparable frontier orbitals to C606– with a small HOMO–LUMO gap. The reduction of C60 to its hexaanion gives an indication about the reducing strength of dimagnesium(i) complexes.
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Affiliation(s)
- Samuel R Lawrence
- EaStCHEM School of Chemistry , University of St Andrews , North Haugh , St Andrews , KY16 9ST , UK .
| | - C André Ohlin
- Department of Chemistry , Umeå University , Linnaeus väg 10 , Umeå , 907 36 , Sweden
| | - David B Cordes
- EaStCHEM School of Chemistry , University of St Andrews , North Haugh , St Andrews , KY16 9ST , UK .
| | - Alexandra M Z Slawin
- EaStCHEM School of Chemistry , University of St Andrews , North Haugh , St Andrews , KY16 9ST , UK .
| | - Andreas Stasch
- EaStCHEM School of Chemistry , University of St Andrews , North Haugh , St Andrews , KY16 9ST , UK .
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16
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Freeman LA, Walley JE, Obi AD, Wang G, Dickie DA, Molino A, Wilson DJD, Gilliard RJ. Stepwise Reduction at Magnesium and Beryllium: Cooperative Effects of Carbenes with Redox Non-Innocent α-Diimines. Inorg Chem 2019; 58:10554-10568. [PMID: 31124671 DOI: 10.1021/acs.inorgchem.9b01058] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In the past two decades, the organometallic chemistry of the alkaline earth elements has experienced a renaissance due in part to developments in ligand stabilization strategies. In order to expand the scope of redox chemistry known for magnesium and beryllium, we have synthesized a set of reduced magnesium and beryllium complexes and compared their resulting structural and electronic properties. The carbene-coordinated alkaline earth-halides, (Et2CAAC)MgBr2 (1), (SIPr)MgBr2 (2), (Et2CAAC)BeCl2 (3), and (SIPr)BeCl2 (4) [Et2CAAC = diethyl cyclic(alkyl)(amino) carbene; SIPr = 1,3-bis(2,6-diisopropylphenyl)-4,5-dihydroimidazole-2-ylidene] were combined with an α-diimine [2,2-bipyridine (bpy) or bis(2,6-diisopropylphenyl)-1,4-diazabutadiene (DippDAB)] and the appropriate stoichiometric amount of potassium graphite to form singly- and doubly-reduced compounds (Et2CAAC)MgBr(DippDAB) (5), (Et2CAAC)MgBr(bpy) (6), (Et2CAAC)Mg(DippDAB) (7), (Et2CAAC)Be(bpy) (8), and (SIPr)Be(bpy) (9). The doubly-reduced compounds 7-9 exhibit substantial π-bonding interactions across the diimine core, metal center, and π-acidic carbene. Each complex was fully characterized by UV-vis, FT-IR, X-ray crystallography, 1H, 13C, and 9Be NMR, or EPR where applicable. We use these compounds to highlight the differences in the organometallic chemistry of the lightest alkaline earth metals, magnesium and beryllium, in an otherwise identical chemical environment.
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Affiliation(s)
- Lucas A Freeman
- Department of Chemistry , University of Virginia , 409 McCormick Road , PO Box 400319, Charlottesville , Virginia 22904 , United States
| | - Jacob E Walley
- Department of Chemistry , University of Virginia , 409 McCormick Road , PO Box 400319, Charlottesville , Virginia 22904 , United States
| | - Akachukwu D Obi
- Department of Chemistry , University of Virginia , 409 McCormick Road , PO Box 400319, Charlottesville , Virginia 22904 , United States
| | - Guocang Wang
- Department of Chemistry , University of Virginia , 409 McCormick Road , PO Box 400319, Charlottesville , Virginia 22904 , United States
| | - Diane A Dickie
- Department of Chemistry , University of Virginia , 409 McCormick Road , PO Box 400319, Charlottesville , Virginia 22904 , United States
| | - Andrew Molino
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science , La Trobe University , Bundoora , Victoria 3083 , Australia
| | - David J D Wilson
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science , La Trobe University , Bundoora , Victoria 3083 , Australia
| | - Robert J Gilliard
- Department of Chemistry , University of Virginia , 409 McCormick Road , PO Box 400319, Charlottesville , Virginia 22904 , United States
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17
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Transmetalation from Magnesium–NHCs—Convenient Synthesis of Chelating π-Acidic NHC Complexes. INORGANICS 2019. [DOI: 10.3390/inorganics7050065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The synthesis of chelating N-heterocyclic carbene (NHC) complexes with considerable π-acceptor properties can be a challenging task. This is due to the dimerization of free carbene ligands, the moisture sensitivity of reaction intermediates or reagents, and challenges associated with the workup procedure. Herein, we report a general route using transmetalation from magnesium–NHCs. Notably, this route gives access to transition-metal complexes in quantitative conversion without the formation of byproducts. It therefore produces transition-metal complexes outperforming the conventional routes based on free or lithium-coordinated carbene, silver complexes, or in situ metalation in dimethyl sulfoxide (DMSO). We therefore propose transmetalation from magnesium–NHCs as a convenient and general route to obtain NHC complexes.
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18
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Dange D, Gair AR, Jones DDL, Juckel M, Aldridge S, Jones C. Acyclic 1,2-dimagnesioethanes/-ethene derived from magnesium(i) compounds: multipurpose reagents for organometallic synthesis. Chem Sci 2019; 10:3208-3216. [PMID: 30996903 PMCID: PMC6428033 DOI: 10.1039/c9sc00200f] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 02/02/2019] [Indexed: 11/21/2022] Open
Abstract
Reactions of three magnesium(i) dimers, [{(ArNacnac)Mg-}2] (ArNacnac = [(ArNCMe)2CH]-; Ar = xylyl (Xyl), mesityl (Mes) or 2,6-diethylphenyl (Dep)), with either 1,1-diphenylethylene (DPE), α-methylstyrene (MS), trans-stilbene (TS) or diphenylacetylene (DPA) led to the 1,2-addition of the Mg-Mg bond across the substrate, giving rise to the 1,2-dimagnesioethanes, [{(XylNacnac)Mg}2(μ-DPE)], [{(DepNacnac)Mg}2(μ-MS)], [{(ArNacnac)Mg}2(μ-TS)] (Ar = Mes or Dep); and a 1,2-dimagnesioethene, [{(MesNacnac)Mg}2(μ-DPA)]. The reactions involving the 1,1-substituted alkenes are shown to be readily redox reversible, in that the reaction products are in equilibrium with a significant proportion of the starting materials at room temperature. Variable temperature NMR spectroscopy and a van't Hoff analysis point to low kinetic barriers to these weakly exergonic reactions. [{(MesNacnac)Mg}2(μ-DPE)] and [{(MesNacnac)Mg}2(μ-DPA)] behave as 1,2-di-Grignard reagents in their reactions with very bulky amido-zinc bromides, yielding the first examples of a 1,2-dizincioethane, [(L*Zn)2(μ-DPE)] (L* = -N(Ar*)(SiPri 3); Ar* = C6H2Me{C(H)Ph2}2-4,2,6), and a 1,2-dizincioethene, [(TBoLZn)2(μ-DPA)] (TBoL = -N(SiMe3){B(DipNCH)2}, Dip = 2,6-diisopropylphenyl), respectively. Divergent reactivity is shown for [{(MesNacnac)Mg}2(μ-DPE)], which behaves as a two-electron reducing agent when treated with amido-cadmium and amido-magnesium halide precursors, yielding the cadmium(i) and magnesium(i) dimers, [PhBoLCdCdPhBoL] (PhBoL = -N(SiPh3){B(DipNCH)2}) and [L†MgMgL†] (L† = -N(Ar†)(SiMe3); Ar† = C6H2Pri{C(H)Ph2}2-4,2,6), respectively. A further class of reactivity for [{(MesNacnac)Mg}2(μ-DPE)] derives from its reaction with the bulky amido-germanium chloride, L*GeCl, which gives a magnesio-germane, presumably via intramolecular C-H activation of a highly reactive magnesiogermylene intermediate, [:Ge(L*){Mg(MesNacnac)}]. [{(MesNacnac)Mg}2(μ-DPE)] can be considered as acting as a two-electron reducing, magnesium transfer reagent in this reaction.
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Affiliation(s)
- Deepak Dange
- School of Chemistry , Monash University , PO Box 23 , VIC , 3800 , Australia
| | - Andrew R Gair
- School of Chemistry , Monash University , PO Box 23 , VIC , 3800 , Australia
- Inorganic Chemistry Laboratory , Department of Chemistry , University of Oxford , South Parks Road , Oxford , OX1 3QR , UK . ; http://www.monash.edu/science/research-groups/chemistry/jonesgroup
| | - Dafydd D L Jones
- School of Chemistry , Monash University , PO Box 23 , VIC , 3800 , Australia
| | - Martin Juckel
- School of Chemistry , Monash University , PO Box 23 , VIC , 3800 , Australia
| | - Simon Aldridge
- Inorganic Chemistry Laboratory , Department of Chemistry , University of Oxford , South Parks Road , Oxford , OX1 3QR , UK . ; http://www.monash.edu/science/research-groups/chemistry/jonesgroup
| | - Cameron Jones
- School of Chemistry , Monash University , PO Box 23 , VIC , 3800 , Australia
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19
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Wong YO, Freeman LA, Agakidou AD, Dickie DA, Webster CE, Gilliard RJ. Two Carbenes versus One in Magnesium Chemistry: Synthesis of Terminal Dihalide, Dialkyl, and Grignard Reagents. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00866] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuen Onn Wong
- Department of Chemistry, University of Virginia, 409 McCormick Road, P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
| | - Lucas A. Freeman
- Department of Chemistry, University of Virginia, 409 McCormick Road, P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
| | - A. Danai Agakidou
- Department of Chemistry, University of Virginia, 409 McCormick Road, P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
| | - Diane A. Dickie
- Department of Chemistry, University of Virginia, 409 McCormick Road, P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
| | - Charles Edwin Webster
- Department of Chemistry, Mississippi State University, Box 9573, Mississippi State, Mississippi 39762, United States
| | - Robert J. Gilliard
- Department of Chemistry, University of Virginia, 409 McCormick Road, P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
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20
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Ma M, Wang H, Wang J, Shen L, Zhao Y, Xu WH, Wu B, Yang XJ. Mg–Mg-bonded compounds with N,N′-dipp-substituted phenanthrene-diamido and o-phenylene-diamino ligands. Dalton Trans 2019; 48:2295-2299. [DOI: 10.1039/c9dt00028c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Mg–Mg-bonded compounds were synthesized by using phenanthrene-diimine and o-phenylenediamine ligands; their UV-Vis and fluorescence spectra and reactivity were studied.
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Affiliation(s)
- Meimei Ma
- 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
| | - Huanhuan Wang
- 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
| | - Juju Wang
- 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
| | - 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
| | - Wen-Hua Xu
- 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
| | - Biao Wu
- 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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21
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Lawrence SR, Cordes DB, Slawin AMZ, Stasch A. Mechanistic insights of anionic ligand exchange and fullerene reduction with magnesium( i) compounds. Dalton Trans 2019; 48:16936-16942. [DOI: 10.1039/c9dt03976g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exchange of anionic ligands on the Mg22+ ion via an associative mechanism can be facile and depends on ligand sterics and shape.
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Affiliation(s)
| | - David B. Cordes
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Andreas Stasch
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
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22
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Liu X, Zhong R, Zhang M, Wu S, Geng Y, Su Z. BeBe triple bond in Be2X4Y2 clusters (X = Li, Na and Y = Li, Na, K) and a perfect classical BeBe triple bond presented in Be2Na4K2. Dalton Trans 2019; 48:14590-14594. [DOI: 10.1039/c9dt03321a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The trans-bent Be2X4Y2 structures are explained through ESP of Be2X4 and a perfect BeBe triple bond is confirmed in D4h-Be2Na4K2.
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Affiliation(s)
- Xingman Liu
- Institute of Functional Material Chemistry
- Faculty of Chemistry & National & Local United Engineering Laboratory for Power Battery
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Ronglin Zhong
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- P.R. China
| | - Min Zhang
- Institute of Functional Material Chemistry
- Faculty of Chemistry & National & Local United Engineering Laboratory for Power Battery
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Shuixing Wu
- College of Chemistry & Chemical Engineering
- Hainan Normal University
- Haikou 571158
- P.R. China
| | - Yun Geng
- Institute of Functional Material Chemistry
- Faculty of Chemistry & National & Local United Engineering Laboratory for Power Battery
- Northeast Normal University
- Changchun 130024
- P.R. China
| | - Zhongmin Su
- Institute of Functional Material Chemistry
- Faculty of Chemistry & National & Local United Engineering Laboratory for Power Battery
- Northeast Normal University
- Changchun 130024
- P.R. China
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23
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Gentner TX, Rösch B, Ballmann G, Langer J, Elsen H, Harder S. Low Valent Magnesium Chemistry with a Super Bulky β-Diketiminate Ligand. Angew Chem Int Ed Engl 2018; 58:607-611. [PMID: 30422354 DOI: 10.1002/anie.201812051] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Indexed: 11/07/2022]
Abstract
The steric bulk of the well-known DIPP BDI ligand (CH[C(CH3 )N-DIPP]2 , DIPP=2,6-diisopropylphenyl) was increased by replacing isopropyl for isopentyl groups. This very bulky DIPeP BDI ligand could not stabilize the radical species (DIPeP BDI)Mg. : reduction of (DIPeP BDI)MgI with Na gave (DIPeP BDI)2 Mg2 with a rather long Mg-Mg bond of 3.0513(8) Å. Addition of TMEDA prior to reduction gave complex (DIPeP BDI)2 Mg2 (C6 H6 ), which could also be obtained as its THF adduct. It is speculated that combination of a bulky spectator ligand and TMEDA prevents dimerization of the intermediate MgI radical, which then reacts with the benzene solvent. Complex (DIPeP BDI)2 Mg2 (C6 H6 ), which formally contains the anti-aromatic anion C6 H6 2- , reacted with tBuOH as a Brønsted base to 1,3- and 1,4-cyclohexadiene and with H2 as a two electron donor to (DIPeP BDI)2 Mg2 H2 and C6 H6 . It also reductively cleaved the C-F bond in fluorobenzene and gave (DIPeP BDI)MgPh, (DIPeP BDI)MgF, and C6 H6 .
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Affiliation(s)
- Thomas Xaver Gentner
- Chair of Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Bastian Rösch
- Chair of Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Gerd Ballmann
- Chair of Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Jens Langer
- Chair of Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Holger Elsen
- Chair of Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058, Erlangen, Germany
| | - Sjoerd Harder
- Chair of Inorganic and Organometallic Chemistry, Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058, Erlangen, Germany
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24
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Gentner TX, Rösch B, Ballmann G, Langer J, Elsen H, Harder S. Low Valent Magnesium Chemistry with a Super Bulky β-Diketiminate Ligand. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Thomas Xaver Gentner
- Chair of Inorganic and Organometallic Chemistry; Universität Erlangen-Nürnberg; Egerlandstrasse 1 91058 Erlangen Germany
| | - Bastian Rösch
- Chair of Inorganic and Organometallic Chemistry; Universität Erlangen-Nürnberg; Egerlandstrasse 1 91058 Erlangen Germany
| | - Gerd Ballmann
- Chair of Inorganic and Organometallic Chemistry; Universität Erlangen-Nürnberg; Egerlandstrasse 1 91058 Erlangen Germany
| | - Jens Langer
- Chair of Inorganic and Organometallic Chemistry; Universität Erlangen-Nürnberg; Egerlandstrasse 1 91058 Erlangen Germany
| | - Holger Elsen
- Chair of Inorganic and Organometallic Chemistry; Universität Erlangen-Nürnberg; Egerlandstrasse 1 91058 Erlangen Germany
| | - Sjoerd Harder
- Chair of Inorganic and Organometallic Chemistry; Universität Erlangen-Nürnberg; Egerlandstrasse 1 91058 Erlangen Germany
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25
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26
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Li J, Luo M, Sheng X, Hua H, Yao W, Pullarkat SA, Xu L, Ma M. Unsymmetrical β-diketiminate magnesium(i) complexes: syntheses and application in catalytic hydroboration of alkyne, nitrile and carbonyl compounds. Org Chem Front 2018. [DOI: 10.1039/c8qo00720a] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of unsymmetrical magnesium(i) complexes have been synthesized and used as highly active pre-catalysts for various hydroboration reactions.
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Affiliation(s)
- Jia Li
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Man Luo
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Xingchao Sheng
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Haiming Hua
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Weiwei Yao
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing 210023
- China
| | - Sumod A. Pullarkat
- Division of Chemistry & Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Li Xu
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Mengtao Ma
- College of Science
- Nanjing Forestry University
- Nanjing 210037
- China
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27
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Pick FS, Leznoff DB, Fryzuk MD. Redox behaviour of ([fc(NPiPr2)2]Fe)2, formation of an iron–iron bond and cleavage of azobenzene. Dalton Trans 2018; 47:10925-10931. [DOI: 10.1039/c8dt00828k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox behaviour of the dimeric tetrairon complex, ([fc(NPiPr2)2]Fe)2 (where fc(NPiPr2)2 = 1,1′-(C5H4NPiPr2)2Fe) has been investigated.
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Affiliation(s)
- Fraser S. Pick
- Department of Chemistry
- The University of British Columbia
- Vancouver
- Canada
| | - Daniel B. Leznoff
- Deprtment of Chemistry
- Simon Fraser University
- 8888 University Drive
- Burnaby
- Canada V5A 1S6
| | - Michael D. Fryzuk
- Department of Chemistry
- The University of British Columbia
- Vancouver
- Canada
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28
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Jones C. Dimeric magnesium(I) β-diketiminates: a new class of quasi-universal reducing agent. Nat Rev Chem 2017. [DOI: 10.1038/s41570-017-0059] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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30
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Prashanth B, Bawari D, Singh S. Heteroleptic Iminophosphonamide In(III) Complexes: Source of Mild Lewis Acid Indium Centers. ChemistrySelect 2017. [DOI: 10.1002/slct.201700026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Billa Prashanth
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali; Knowledge City, Sector-81, SAS Nagar, Mohali 140306 Punjab India
| | - Deependra Bawari
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali; Knowledge City, Sector-81, SAS Nagar, Mohali 140306 Punjab India
| | - Sanjay Singh
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali; Knowledge City, Sector-81, SAS Nagar, Mohali 140306 Punjab India
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31
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Hawley AL, Ohlin CA, Fohlmeister L, Stasch A. Heavier Group 13 Metal(I) Heterocycles Stabilized by Sterically Demanding Diiminophosphinates: A Structurally Characterized Monomer-Dimer Pair For Gallium. Chemistry 2016; 23:447-455. [DOI: 10.1002/chem.201604495] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Andrew L. Hawley
- School of Chemistry; Monash University; 17 Rainforest Walk Melbourne Victoria 3800 Australia
| | - C. André Ohlin
- School of Chemistry; Monash University; 17 Rainforest Walk Melbourne Victoria 3800 Australia
- Department of Chemistry; Umeå University; Linnaeus väg 10 Umeå 907 36 Sweden
| | - Lea Fohlmeister
- School of Chemistry; Monash University; 17 Rainforest Walk Melbourne Victoria 3800 Australia
| | - Andreas Stasch
- School of Chemistry; Monash University; 17 Rainforest Walk Melbourne Victoria 3800 Australia
- EaStCHEM School of Chemistry; University of St Andrews; North Haugh St Andrews KY16 9ST UK
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32
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Prashanth B, Srungavruksham NK, Singh S. Mononuclear Neutral Boron Hydrides Affordable as [N,N’] Chelates of Iminophosphonamides. ChemistrySelect 2016. [DOI: 10.1002/slct.201600746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Billa Prashanth
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali; Knowledge City, Sector-81, SAS Nagar Mohali 140306, Punjab India
| | - Nagarjuna Kumar Srungavruksham
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali; Knowledge City, Sector-81, SAS Nagar Mohali 140306, Punjab India
| | - Sanjay Singh
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali; Knowledge City, Sector-81, SAS Nagar Mohali 140306, Punjab India
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33
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Boutland AJ, Dange D, Stasch A, Maron L, Jones C. Two‐Coordinate Magnesium(I) Dimers Stabilized by Super Bulky Amido Ligands. Angew Chem Int Ed Engl 2016; 55:9239-43. [PMID: 27303934 DOI: 10.1002/anie.201604362] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Aaron J. Boutland
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
| | - Deepak Dange
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
| | - Andreas Stasch
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
| | - Laurent Maron
- Université de Toulouse et CNRS, INSA, UPS, UMR 5215, LPCNO 135 Avenue de Rangueil 31077 Toulouse France
| | - Cameron Jones
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
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34
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Boutland AJ, Dange D, Stasch A, Maron L, Jones C. Two‐Coordinate Magnesium(I) Dimers Stabilized by Super Bulky Amido Ligands. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604362] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Aaron J. Boutland
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
| | - Deepak Dange
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
| | - Andreas Stasch
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
| | - Laurent Maron
- Université de Toulouse et CNRS, INSA, UPS, UMR 5215, LPCNO 135 Avenue de Rangueil 31077 Toulouse France
| | - Cameron Jones
- School of Chemistry Monash University P.O. Box 23 Melbourne VIC 3800 Australia
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35
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Goodwin CAP, Smith A, Ortu F, Vitorica-Yrezabal IJ, Mills DP. Salt metathesis versus protonolysis routes for the synthesis of silylamide Hauser base (R2NMgX; X = halogen) and amido-Grignard (R2NMgR) complexes. Dalton Trans 2016; 45:6004-14. [PMID: 26275169 DOI: 10.1039/c5dt02535d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of silylamide Hauser base (R2NMgX; X = halide) and amido-Grignard (R2NMgR) complexes from simple Grignard reagents using [K{N(SiMe2(t)Bu)2}]n, [K{N(SiMe2(t)Bu)(Si(i)Pr3)}]n and [K{N(Si(i)Pr3)2}]n, and their parent silylamines, was explored. Both salt metathesis and protonolysis routes proved ineffective with allylmagnesium chloride as a starting material due to complex Schlenk equilibria, with [Mg(N(RR'))(μ-Cl)(THF)]2 (N(RR') = {N(Si(t)BuMe2)2}(-), 1; {N(Si(t)BuMe2)(Si(i)Pr3)}(-), 2; {N(Si(i)Pr3)2}(-), 3) and [Mg{N(Si(i)Pr3)2}(μ-C3H5)]∞ (4) identified as minor products. In contrast, salt metathesis protocols using potassium silylamides and methylmagnesium iodide gave [Mg(N(RR'))(μ-CH3)]2 (N(RR') = {N(Si(t)BuMe2)2}(-), 7a; {N(Si(t)BuMe2)(Si(i)Pr3)}(-), 8; {N(Si(i)Pr3)2}(-), 9) and [Mg{N(Si(t)BuMe2)2}(CH3)(DME)] (7b), with [Mg{N(Si(t)BuMe2)2}(μ-I)(THF)]2 (10) isolated as a side-product during the preparation of 7a. Unusually, methylmagnesium iodide, di-n-butylmagnesium and 7-9 did not react with HN(RR') under the conditions we employed. The synthesis of [Na{N(Si(t)BuMe2)2}(THF)]2 (5a) and [Na{N(Si(t)BuMe2)2}(DME)2] (5b) from benzyl sodium and HN(Si(t)BuMe2)2, and a solvent-free structure of [K{N(Si(t)BuMe2)2}] (6), are also reported. Complexes 1, 5b, 7a, 7b, 8, 9 and 10 are fully characterised by single crystal XRD, multinuclear NMR and IR spectroscopy and elemental analysis, whereas complexes 2-4, 5a and 6 were identified by XRD only.
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Affiliation(s)
- Conrad A P Goodwin
- School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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36
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Ganesamoorthy C, Wölper C, Nizovtsev AS, Schulz S. Synthesis and Structural Characterization of Magnesium-Substituted Polystibides [(LMg)4
Sb8
]. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510504] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chelladurai Ganesamoorthy
- Faculty of Chemistry; University of Duisburg-Essen; Universitätsstrasse 5-7, S07 S03 C30 45117 Essen Germany
| | - Christoph Wölper
- Faculty of Chemistry; University of Duisburg-Essen; Universitätsstrasse 5-7, S07 S03 C30 45117 Essen Germany
| | - Anton S. Nizovtsev
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch of the Russian Academy of Sciences; Academician Lavrentiev Avenue 3 630090 Novosibirsk Russian Federation
- Novosibirsk State University; Pirogova Street 2 630090 Novosibirsk Russian Federation
| | - Stephan Schulz
- Faculty of Chemistry; University of Duisburg-Essen; Universitätsstrasse 5-7, S07 S03 C30 45117 Essen Germany
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37
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Ganesamoorthy C, Wölper C, Nizovtsev AS, Schulz S. Synthesis and Structural Characterization of Magnesium-Substituted Polystibides [(LMg)4
Sb8
]. Angew Chem Int Ed Engl 2016; 55:4204-9. [DOI: 10.1002/anie.201510504] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 01/22/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Chelladurai Ganesamoorthy
- Faculty of Chemistry; University of Duisburg-Essen; Universitätsstrasse 5-7, S07 S03 C30 45117 Essen Germany
| | - Christoph Wölper
- Faculty of Chemistry; University of Duisburg-Essen; Universitätsstrasse 5-7, S07 S03 C30 45117 Essen Germany
| | - Anton S. Nizovtsev
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch of the Russian Academy of Sciences; Academician Lavrentiev Avenue 3 630090 Novosibirsk Russian Federation
- Novosibirsk State University; Pirogova Street 2 630090 Novosibirsk Russian Federation
| | - Stephan Schulz
- Faculty of Chemistry; University of Duisburg-Essen; Universitätsstrasse 5-7, S07 S03 C30 45117 Essen Germany
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38
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Boutland AJ, Pernik I, Stasch A, Jones C. Magnesium(I) Dimers Bearing Tripodal Diimine-Enolate Ligands: Proficient Reagents for the Controlled Reductive Activation of CO2and SO2. Chemistry 2015; 21:15749-58. [DOI: 10.1002/chem.201502755] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Indexed: 11/08/2022]
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39
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Vrána J, Jambor R, Růžička A, Alonso M, De Proft F, Lyčka A, Dostál L. Reactivity of bis(organoamino)phosphanes with magnesium(ii) compounds. Dalton Trans 2015; 44:4533-45. [DOI: 10.1039/c4dt03929g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The reactivity of bis(organoamino)phosphanes with magnesium(ii) reagents is reported. The outcome of the reactions is influenced by a tautomeric H-shift in ligand backbones.
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Affiliation(s)
- Jan Vrána
- Department of General and Inorganic Chemistry
- Faculty of Chemical Technology
- University of Pardubice
- CZ-532 10 Pardubice
- Czech Republic
| | - Roman Jambor
- Department of General and Inorganic Chemistry
- Faculty of Chemical Technology
- University of Pardubice
- CZ-532 10 Pardubice
- Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry
- Faculty of Chemical Technology
- University of Pardubice
- CZ-532 10 Pardubice
- Czech Republic
| | - Mercedes Alonso
- Eenheid Algemene Chemie (ALGC)
- Vrije Universiteit Brussel (VUB) Pleinlaan 2
- B-1050 Brussels
- Belgium
| | - Frank De Proft
- Eenheid Algemene Chemie (ALGC)
- Vrije Universiteit Brussel (VUB) Pleinlaan 2
- B-1050 Brussels
- Belgium
| | - Antonín Lyčka
- Research Institute for Organic Syntheses
- CZ-533 54 Pardubice
- Czech Republic
| | - Libor Dostál
- Department of General and Inorganic Chemistry
- Faculty of Chemical Technology
- University of Pardubice
- CZ-532 10 Pardubice
- Czech Republic
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40
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Hawley AL, Stasch A. Structural Diversity in Sterically Demanding Diiminophosphinato Alkali Metal Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402924] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andrew L. Hawley
- School of Chemistry, Monash University, PO Box 23, Melbourne, Victoria 3800, Australia, http://monash.edu/science/about/schools/chemistry/staff/stasch/
| | - Andreas Stasch
- School of Chemistry, Monash University, PO Box 23, Melbourne, Victoria 3800, Australia, http://monash.edu/science/about/schools/chemistry/staff/stasch/
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