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Franz R, Gál D, Bruhn C, Kelemen Z, Pietschnig R. Gradual Coordination and Reversible P-P Bond Activation of a P 3 -Unit with Transition Metal Carbonyls. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306805. [PMID: 38161225 PMCID: PMC10953586 DOI: 10.1002/advs.202306805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/06/2023] [Indexed: 01/03/2024]
Abstract
Coordination of a stereochemically defined P3 -chain to a series of transition metal carbonyls [M(CO)x ]z- (M = Mn (x = 5, z = 1), Fe (x = 4, z = 2) or Co (x = 4, z = 1)) is explored using a [3]ferrocenophane scaffold. A gradual transition from η1 -, η2 - to η3 -coordination is observed where in the η2 -mode the terminal positions of the phosphorus chain are bridged. With an excess of cobalt carbonyl successive P-P bond activation and gradual separation of the central phosphorus atoms from the phosphorus chain has been observed. This process is reversible and with suitable reagents such as methyl lithium, the P3 -unit is regenerated in stereospecific manner. The bonding situation and steps of the gradual P-P bond activation are investigated by DFT calculations as well as experimental methods (e.g., NMR spectroscopy, X-ray crystallography).
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Affiliation(s)
- Roman Franz
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
| | - Dalma Gál
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and EconomicsMűegyetem Rkp 3.Budapest1111Hungary
| | - Clemens Bruhn
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and EconomicsMűegyetem Rkp 3.Budapest1111Hungary
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich‐Plett‐Straße 4034132KasselGermany
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2
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Coburger P, Leitl J, Scott DJ, Hierlmeier G, Shenderovich IG, Hey-Hawkins E, Wolf R. Synthesis of a carborane-substituted bis(phosphanido) cobaltate(i), ligand substitution, and unusual P 4 fragmentation. Chem Sci 2021; 12:11225-11235. [PMID: 34522320 PMCID: PMC8386647 DOI: 10.1039/d1sc02948g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/07/2021] [Indexed: 01/13/2023] Open
Abstract
Oxidative addition of the P-P single bond of an ortho-carborane-derived 1,2-diphosphetane (1,2-C2(PMes)2B10H10) (Mes = 2,4,6-Me3C6H2) to cobalt(-i) and nickel(0) sources affords the first heteroleptic complexes of a carborane-bridged bis(phosphanido) ligand. The complexes also incorporate labile ligands suitable for further functionalisation. Thus, the cobalt(i) complex [K([18]crown-6)][Co{1,2-(PMes)2C2B10H10}(cod)] (cod = 1,5-cyclooctadiene) bearing a labile cyclooctadiene ligand undergoes facile ligand exchange reactions with isonitriles and tert-butyl phosphaalkyne with retention of the bis(phosphanido) ligand. However, in the reaction with one equivalent of P4, the electron-rich bis(phosphanido) moiety abstracts a single phosphorus atom with formation of a new P3 chain, while the remaining three P atoms derived from P4 form an η3-coordinating cyclo-P3 ligand. In contrast, when the same reaction is performed with two equivalents of the cobalt(i) complex, a dinuclear product is formed which features an unusual P4 chain in its molecular structure.
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Affiliation(s)
- Peter Coburger
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
- Institute of Inorganic Chemistry, Universität Leipzig Johannisallee 29 04103 Leipzig Germany https://anorganik.chemie.uni-leipzig.de/anorganik/ak-hey-hawkins/
| | - Julia Leitl
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Daniel J Scott
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Gabriele Hierlmeier
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Ilya G Shenderovich
- Institute of Organic Chemistry, Universität Regensburg 93040 Regensburg Germany
| | - Evamarie Hey-Hawkins
- Institute of Inorganic Chemistry, Universität Leipzig Johannisallee 29 04103 Leipzig Germany https://anorganik.chemie.uni-leipzig.de/anorganik/ak-hey-hawkins/
| | - Robert Wolf
- Institute of Inorganic Chemistry, Universität Regensburg 93040 Regensburg Germany
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Hujon F, Lyngdoh RHD, Schaefer HF, King RB. Binuclear Cobalt Paddlewheel-Type Complexes: Relating Metal-Metal Bond Lengths to Formal Bond Orders. Inorg Chem 2021; 60:584-596. [PMID: 33356179 DOI: 10.1021/acs.inorgchem.0c02076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Paddlewheel-type complexes are prominent among experimentally known binuclear cobalt complexes and incorporate substituted formamidinate, guanidinate, and carboxylate ligands in digonal, trigonal, and tetragonal arrays around the bimetallic core. Such complexes are modeled here by density functional theory using unsubstituted ligands, extending the whole set to incorporate a variety of metal oxidation states and spin multiplicities. The DFT results for ground state cobalt-cobalt bond lengths and ground state spin multiplicity of the model complexes are often quite close to the experimental results for the corresponding substituted complexes. The three series of complexes often exhibit parallel trends with regard to effects of change in the metal oxidation state and spin multiplicity. The formamidinate and guanidinate series show marked resemblances. The lowered symmetry in many model trigonal complexes implies that such deviations in the experimentally known congeners arise from the inherent electronic structure. For ground state species, the DFT results provide Co-Co bond orders (BOs) from MO occupancy considerations. Further, using a revised electron bookkeeping method, Co-Co formal bond order (fBO) values from 0.0 to 2.0 are assigned to all of the 85 complexes studied. The computed Co-Co bond lengths fall into distinct ranges according to the formal bond order values (from 0.5 to 2).
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Affiliation(s)
- Fitzerald Hujon
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, India
| | - R H Duncan Lyngdoh
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, India.,Centre for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Henry F Schaefer
- Centre for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - R Bruce King
- Centre for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, United States
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4
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Metal phosphinohydrazone complexes. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2976-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Poitras AM, Bezpalko MW, Moore CE, Dickie DA, Foxman BM, Thomas CM. A Series of Dimeric Cobalt Complexes Bridged by N-Heterocyclic Phosphido Ligands. Inorg Chem 2020; 59:4729-4740. [PMID: 32186372 DOI: 10.1021/acs.inorgchem.9b03790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A tridentate [PPP] ligand has been used to construct a series of dimeric cobalt complexes and explore cooperative multielectron redox processes that are both metal- and ligand-centered. Reduction of (PPClP)CoCl2 (1) with excess magnesium affords the CoICoI N-heterocyclic phosphido (NHP-)-bridged symmetric dimer [(μ-PPP)Co]2 (2). Two-electron oxidation of 2 with FcPF6 generates an asymmetrically bridged dication [(μ-PPP)Co]2[PF6]2 (3) in which the oxidation has occurred in a delocalized fashion throughout the Co2P2 core. In contrast, [(μ-PPP)Co]2+ (5), which can be generated either by one-electron oxidation of 2 with FcPF6 or comportionation of 2 and 3, features an asymmetric geometry and localized mixed valence. Treatment of 1 with the milder reductants CoCp2 and KBEt3H does not lead to formation of 2, 3, or 5 but instead generates dimeric species [(PPP)CoCl]2 (6) and [(PPP)CoH]2 (7). Unlike 2-5, where the phosphine side arms of the tridentate [PPP] ligand span the two Co centers, complex 6 and 7 are connected solely by NHP- ligands that bridge the two (PPP)Co fragments.
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Affiliation(s)
- Andrew M Poitras
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Mark W Bezpalko
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Curtis E Moore
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Diane A Dickie
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bruce M Foxman
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Christine M Thomas
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
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6
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Chen W, Song H, Li J, Cui C. Catalytic Selective Dihydrosilylation of Internal Alkynes Enabled by Rare‐Earth Ate Complex. Angew Chem Int Ed Engl 2020; 59:2365-2369. [DOI: 10.1002/anie.201913773] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Wufeng Chen
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
| | - Haibin Song
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
| | - Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
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7
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Chen W, Song H, Li J, Cui C. Catalytic Selective Dihydrosilylation of Internal Alkynes Enabled by Rare‐Earth Ate Complex. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wufeng Chen
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
| | - Haibin Song
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
| | - Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry and College of ChemistryNankai University Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China
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Panova YS, Sheyanova AV, Baranov EV, Kornev AN. Migratory insertion of bis(diethylamino)phosphine group into the N–N bond in the reaction of substituted hydrazobenzene with (Et2N)2PCl. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2734-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Gholivand K, Kahnouji M, Maghsoud Y, Hosseini M, Mark Roe S. Synthesis, structure, computational and catalytic activities of palladium complexes containing hydrazide based amino-phosphine ligands. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Duncan Lyngdoh RH, Schaefer HF, King RB. Metal-Metal (MM) Bond Distances and Bond Orders in Binuclear Metal Complexes of the First Row Transition Metals Titanium Through Zinc. Chem Rev 2018; 118:11626-11706. [PMID: 30543419 DOI: 10.1021/acs.chemrev.8b00297] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This survey of metal-metal (MM) bond distances in binuclear complexes of the first row 3d-block elements reviews experimental and computational research on a wide range of such systems. The metals surveyed are titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, and zinc, representing the only comprehensive presentation of such results to date. Factors impacting MM bond lengths that are discussed here include (a) the formal MM bond order, (b) size of the metal ion present in the bimetallic core (M2) n+, (c) the metal oxidation state, (d) effects of ligand basicity, coordination mode and number, and (e) steric effects of bulky ligands. Correlations between experimental and computational findings are examined wherever possible, often yielding good agreement for MM bond lengths. The formal bond order provides a key basis for assessing experimental and computationally derived MM bond lengths. The effects of change in the metal upon MM bond length ranges in binuclear complexes suggest trends for single, double, triple, and quadruple MM bonds which are related to the available information on metal atomic radii. It emerges that while specific factors for a limited range of complexes are found to have their expected impact in many cases, the assessment of the net effect of these factors is challenging. The combination of experimental and computational results leads us to propose for the first time the ranges and "best" estimates for MM bond distances of all types (Ti-Ti through Zn-Zn, single through quintuple).
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Affiliation(s)
| | - Henry F Schaefer
- Centre for Computational Quantum Chemistry , University of Georgia , Athens , Georgia 30602 , United States
| | - R Bruce King
- Centre for Computational Quantum Chemistry , University of Georgia , Athens , Georgia 30602 , United States
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11
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Coburger P, Demeshko S, Rödl C, Hey-Hawkins E, Wolf R. Oxidative P−P Bond Addition to Cobalt(−I): Formation of a Low-Spin Cobalt(III) Phosphanido Complex. Angew Chem Int Ed Engl 2017; 56:15871-15875. [DOI: 10.1002/anie.201709140] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Peter Coburger
- Leipzig University; Faculty of Chemistry and Mineralogy, Institute of Inorganic Chemistry; Johannisallee 29 04103 Leipzig Germany
| | - Serhiy Demeshko
- Göttingen University; Faculty of Chemistry; Tammanstrasse 4 37077 Göttingen Germany
| | - Christian Rödl
- University of Regensburg; Institute of Inorganic Chemistry; 93040 Regensburg Germany
| | - Evamarie Hey-Hawkins
- Leipzig University; Faculty of Chemistry and Mineralogy, Institute of Inorganic Chemistry; Johannisallee 29 04103 Leipzig Germany
| | - Robert Wolf
- University of Regensburg; Institute of Inorganic Chemistry; 93040 Regensburg Germany
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12
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Coburger P, Demeshko S, Rödl C, Hey-Hawkins E, Wolf R. Oxidative P-P-Bindungsaddition an Cobalt(−I): Bildung eines Low-spin-Cobalt(III)-Phosphanidokomplexes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709140] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Peter Coburger
- Universität Leipzig; Fakultät für Chemie und Mineralogie, Institut für Anorganische Chemie; Johannisallee 29 04103 Leipzig Deutschland
| | - Serhiy Demeshko
- Universität Göttingen; Fakultät für Chemie; Tammanstraße 4 37077 Göttingen Deutschland
| | - Christian Rödl
- Universität Regensburg; Institut für Anorganische Chemie; 93040 Regensburg Deutschland
| | - Evamarie Hey-Hawkins
- Universität Leipzig; Fakultät für Chemie und Mineralogie, Institut für Anorganische Chemie; Johannisallee 29 04103 Leipzig Deutschland
| | - Robert Wolf
- Universität Regensburg; Institut für Anorganische Chemie; 93040 Regensburg Deutschland
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13
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Geier SJ, Vogels CM, Mellonie NR, Daley EN, Decken A, Doherty S, Westcott SA. The Phosphinoboration ofN-Heterocycles. Chemistry 2017; 23:14485-14499. [DOI: 10.1002/chem.201702203] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Indexed: 01/08/2023]
Affiliation(s)
- Stephen J. Geier
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Niall R. Mellonie
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU England
| | - Erika N. Daley
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Andreas Decken
- Department of Chemistry; University of New Brunswick; Fredericton NB E3B 5A3 Canada
| | - Simon Doherty
- NUCAT, School of Chemistry, Bedson Building; Newcastle University; Newcastle upon Tyne NE1 7RU England
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
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Fliedel C, Ghisolfi A, Braunstein P. Functional Short-Bite Ligands: Synthesis, Coordination Chemistry, and Applications of N-Functionalized Bis(diaryl/dialkylphosphino)amine-type Ligands. Chem Rev 2016; 116:9237-304. [PMID: 27456550 DOI: 10.1021/acs.chemrev.6b00153] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this review is to highlight how the diversity generated by N-substitution in the well-known short-bite ligand bis(diphenylphosphino)amine (DPPA) allows a fine-tuning of the ligand properties and offers a considerable scope for tailoring the properties and applications of their corresponding metal complexes. The various N-substituents include nitrogen-, oxygen-, phosphorus-, sulfur-, halogen-, and silicon-based functionalities and directly N-bound metals. Multiple DPPA-type ligands linked through an organic spacer and N-functionalized DRPA-type ligands, in which the PPh2 substituents are replaced by PR2 (R = alkyl, benzyl) groups, are also discussed. Owing to the considerable diversity of N-functionalized DPPA-type ligands available, the applications of their mono- and polynuclear metal complexes are very diverse and range from homogeneous catalysis with well-defined or in situ generated (pre)catalysts to heterogeneous catalysis and materials science. In particular, sustained interest for DPPA-type ligands has been motivated, at least in part, by their ability to promote selective ethylene tri- or tetramerization in combination with chromium. Ligands and metal complexes where the N-substituent is a pure hydrocarbon group (as opposed to N-functionalization) are outside the scope of this review. However, when possible, a comparison between the catalytic performances of N-functionalized systems with those of their N-substituted analogs will be provided.
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Affiliation(s)
- Christophe Fliedel
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg , 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg, France.,Laboratoire de Chimie de Coordination (LCC), CNRS-UPR 8241, 205 Route de Narbonne, Toulouse F-31077 Cedex 4, France
| | - Alessio Ghisolfi
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg , 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg , 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
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15
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Kornev AN, Sushev VV, Zolotareva NV, Baranov EV, Fukin GK, Abakumov GA. Interaction of Azobenzene and Benzalaniline with Strong Amido Bases. Org Lett 2015; 17:6154-7. [PMID: 26654996 DOI: 10.1021/acs.orglett.5b02860] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The interaction of azobenzene with lithium dicyclohexylamide (Cy2NLi) in THF or Et2O afforded the ion-radical salt of azobenzene (1) structurally characterized for the first time and dicyclohexylaminyl radical, which begins a novel chain of transformations leading eventually to the imino-enamido lithium complex (3). Benzalaniline, being a relative of azobenzene, reacted with Cy2NLi without electron transfer by a proton-abstraction mechanism to form the dilithium salt of N(1),N(2),1,2-tetraphenylethene-1,2-diamine quantitatively.
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Affiliation(s)
- Alexander N Kornev
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences , 49 Tropinin str., 603950 Nizhny Novgorod GSP-445, Russia
| | - Vyacheslav V Sushev
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences , 49 Tropinin str., 603950 Nizhny Novgorod GSP-445, Russia
| | - Natalia V Zolotareva
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences , 49 Tropinin str., 603950 Nizhny Novgorod GSP-445, Russia
| | - Evgenii V Baranov
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences , 49 Tropinin str., 603950 Nizhny Novgorod GSP-445, Russia
| | - Georgy K Fukin
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences , 49 Tropinin str., 603950 Nizhny Novgorod GSP-445, Russia
| | - Gleb A Abakumov
- G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences , 49 Tropinin str., 603950 Nizhny Novgorod GSP-445, Russia
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Fernández Sáez N, García López J, Iglesias MJ, López Ortiz F. Derivatization of (quinolin-8-yl)phosphinimidic amides via ortho-lithiation revisited. Dalton Trans 2015; 44:11504-13. [PMID: 26030882 DOI: 10.1039/c5dt01392e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
5The direct ortho-lithiation of N-H containing (quinolin-8-yl)phosphinimidic amides by reaction with 1 equiv. of n-BuLi described by Wang and co-workers has been re-examined. The multinuclear magnetic resonance ((1)H, (2)H, (7)Li, (13)C, (15)N and (31)P) study of the species formed in the monolithiation of N-(tert-butyl)-P,P-diphenyl-N'-(quinolin-8-yl)phosphinimidic amide 5 with n-BuLi in THF showed that proton abstraction occurred exclusively and quantitatively at the NH. The combination of the NMR results with a DFT study made it possible to describe the structure of the N-lithiated species 9 as a dimer consisting of an eight-membered ring showing two lithium ions triply coordinated to nitrogen atoms corresponding to the deprotonated amine and aminoquinoline moieties of different monomers. The formation of a polymer featuring the same coordination mode couldn't be excluded. In addition, optimized conditions for the efficient derivatization of 5 via ortho-lithiation were realised. The reaction of 5 with 2.4 equiv. of t-BuLi in THF in the temperature range of -80 °C to 25 °C for 3 h afforded a N,C(ortho)-dilithiated species that was trapped with a series of electrophiles leading to new functionalized ortho derivatives of 5 in good yields.
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Affiliation(s)
- Nerea Fernández Sáez
- Área de Química Orgánica, Universidad de Almería, Carretera de Sacramento s/n, 04120 Almería, Spain.
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Kornev AN, Zolotareva NV, Sushev VV, Cherkasov AV, Abakumov GA. Interaction of phosphorus trichloride with triethylamine. MENDELEEV COMMUNICATIONS 2015. [DOI: 10.1016/j.mencom.2015.05.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Kornev AN, Sushev VV, Panova YS, Zolotareva NV, Baranov EV, Fukin GK, Abakumov GA. Phenylpyrazole-Based Hypervalent Phosphorus Compounds: From Positional Isomerism to Stacking Interactions. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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PRASHANTH BILLA, SINGH SANJAY. Bulky iminophosphonamines for N–P–N coordination: Synthesis and structural characterization of lithium iminophosphonamides and homoleptic bis-chelates of Co(II), Ni(II) and Cu(II). J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0769-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Prashanth B, Singh S. A new bulky iminophosphonamide as an N,N′-chelating ligand: synthesis and structural characterization of heteroleptic group 13 element complexes. Dalton Trans 2014; 43:16880-8. [DOI: 10.1039/c4dt02637c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Casimiro M, García-López J, Iglesias MJ, López-Ortiz F. Understanding the directed ortho lithiation of (R)-Ph2P(NCO2Me)NHCH(Me)Ph. NMR spectroscopic and computational study of the structure of the N-lithiated species. Dalton Trans 2014; 43:14291-301. [DOI: 10.1039/c4dt00927d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The multinuclear magnetic resonance and computational study of the structure of N-lithium (R)-Ph2P(NCO2Me)NHCH(Me)Ph revealed the origin of its diastereoselective ortho lithiation.
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Affiliation(s)
- M. Casimiro
- Área de Química Orgánica
- Universidad de Almería
- 04120 Almería, Spain
| | - J. García-López
- Área de Química Orgánica
- Universidad de Almería
- 04120 Almería, Spain
| | - M. J. Iglesias
- Área de Química Orgánica
- Universidad de Almería
- 04120 Almería, Spain
| | - F. López-Ortiz
- Área de Química Orgánica
- Universidad de Almería
- 04120 Almería, Spain
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22
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Bis(4-methylpiperidinyl)-phenylphosphine and bis(4-benzylpiperidinyl)-phenylphosphine: Synthesis, derivatization, molybdenum complexes and DFT calculations. Polyhedron 2014. [DOI: 10.1016/j.poly.2013.08.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Suttil JA, Wasserscheid P, McGuinness DS, Gardiner MG, Evans SJ. A survey of pendant donor-functionalised (N,O) phosphine ligands for Cr-catalysed ethylene tri- and tetramerisation. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00457d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Selected phosphine-based ligands plus chromium have been found to be promising candidates for MAO-free trimerisation and tetramerisation of ethylene.
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Affiliation(s)
- James A. Suttil
- School of Physical Sciences – Chemistry
- University of Tasmania
- Hobart 7001, Australia
| | - Peter Wasserscheid
- Lehrstuhl für Chemische Reaktionstechnik
- Universität Erlangen-Nürnberg
- 91058 Erlangen, Germany
| | - David S. McGuinness
- School of Physical Sciences – Chemistry
- University of Tasmania
- Hobart 7001, Australia
| | - Michael G. Gardiner
- School of Physical Sciences – Chemistry
- University of Tasmania
- Hobart 7001, Australia
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24
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Panova YS, Kornev AN, Sushchev VV, Cherkasov AV, Abakumov GA. New rearrangements of phosphorus-nitrogen ligands. DOKLADY CHEMISTRY 2012. [DOI: 10.1134/s0012500812080058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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