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Rina YA, Schmidt JAR. Alpha-metalated N, N-dimethylbenzylamine rare-earth metal complexes and their catalytic applications. Dalton Trans 2024. [PMID: 38757291 DOI: 10.1039/d4dt00826j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
This perspective summarizes our group's extensive research in the realm of organometallic lanthanide complexes, while also placing the catalytic reactions supported by these species within the context of known lanthanide catalysis worldwide, with a specific focus on phosphorus-based catalytic reactions such as intermolecular hydrophosphination and hydrophosphinylation. α-Metalated N,N-dimethylbenzylamine ligands have been utilized to generate homoleptic lanthanide complexes, which have subsequently proven to be highly active lanthanum-based catalysts. The main goal of our research program has been to enhance the catalytic efficiency of lanthanum-based complexes, which began with initial successes in the stoichiometric synthesis of organometallic lanthanide complexes and utilization of these species in catalytic hydrophosphination reactions. Not only have these species supported traditional lanthanide catalysis, such as the hydrophosphination of heterocumulenes like carbodiimides, isocyanates, and isothiocyanates, but they have also been effective for a plethora of catalytic reactions tested thus far, including the hydrophosphinylation and hydrophosphorylation of nitriles, hydrophosphination and hydrophosphinylation of alkynes and alkenes, and the heterodehydrocoupling of silanes and amines. Each of these catalytic transformations is meritorious in its own right, offering new synthetic routes to generate organic scaffolds with enhanced functionality while concurrently minimizing both waste generation and energy consumption. Objectives: We aim for the research summary presented herein to inspire and encourage other researchers to investigate f-element based stoichiometric and catalytic reactions. Our efforts in this field began with the recognition that potassium salts of benzyldimethylamine preferred deprotonation at the α-position, rather than the ortho-position, and we wondered if this regiochemistry would be retained in the formation of lanthanide complexes. The pursuit of this simple idea led first to a series of structurally fascinating homoleptic organometallic lanthanide complexes with surprisingly good stability. Fundamental studies of the protonolysis chemistry of these complexes ultimately revealed highly versatile lanthanide-based precatalysts that have propelled a catalytic investigation spanning more than a decade. We anticipate that this summative perspective will animate the synthetic as well as biological communities to consider La(DMBA)3-based catalytic methods in the synthesis of functionalized organic scaffolds as an atom-economic, convenient, and efficient methodology. Ultimately, we envision our work making a positive impact on the advancement of novel chemical transformations and contributing to progress in various fields of science and technology.
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Affiliation(s)
- Yesmin Akter Rina
- Department of Chemistry & Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, The University of Toledo, 2801 W. Bancroft St. MS 602, Toledo, Ohio 43606-3390, USA.
| | - Joseph A R Schmidt
- Department of Chemistry & Biochemistry, School of Green Chemistry and Engineering, College of Natural Sciences and Mathematics, The University of Toledo, 2801 W. Bancroft St. MS 602, Toledo, Ohio 43606-3390, USA.
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2
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Mahmudov KT, Huseynov FE, Aliyeva VA, Guedes da Silva MFC, Pombeiro AJL. Noncovalent Interactions at Lanthanide Complexes. Chemistry 2021; 27:14370-14389. [PMID: 34363268 DOI: 10.1002/chem.202102245] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Indexed: 11/10/2022]
Abstract
Lanthanide complexes have attracted a widespread attention due to their structural diversity, as well as multifunctional and tunable properties. The development of lanthanide based functional materials has often relied on the design of the secondary coordination sphere of the corresponding lanthanide complexes. For instance, usually simple lanthanide salts (solvento complexes) do not catalyze effectively organic reactions or provide low yield of the expected product, whereas the presence of a suitable organic ligand with a noncovalent bond donor or acceptor centre (secondary coordination sphere) modifies the symmetry around the metal centre in lanthanide complexes which then successfully can act as catalysts in both homogenous and heterogenous catalysis. In this minireview, we discuss several relevant examples, based on X-ray crystal structure analyses, in which the hydrogen, halogen, chalcogen, pnictogen, tetrel and rare-earth bonds, as well as cation-π, anion-π, lone pair-π, π-π and pancake interactions, are used as a synthon in the decoration of the secondary coordination sphere of lanthanide complexes.
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Affiliation(s)
- Kamran T Mahmudov
- University of Lisbon Higher Technical Institute: Universidade de Lisboa Instituto Superior Tecnico, CQE, R., 1009 - 001, Lisbon, PORTUGAL
| | - Fatali E Huseynov
- Baku State University, Department of Ecology and Soil Sciences, AZERBAIJAN
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3
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Abstract
The synthesis of tetrabenzo[a,c,g,i]fluorenyl (Tbf) yttrium dialkyl complexes, (Tbf)Y(CH2SiMe3)2(L) (L = tetrahydrofuran (THF), 1; L = bipy, 2), by direct protonolysis of the tris(alkyl) complex, Y(CH2SiMe3)3(THF)2, are reported. The X-ray crystal structures of 1 and 2 display the helical twisting typically observed for the Tbf ligand. Dynamic nuclear magnetic resonance (NMR) studies on 1 show a barrier to Tbf helical inversion (epimerization or “wagging”) of 38.1 ± 0.5 kJ mol−1. The reaction of 1 with acidic hydrocarbons such as 1,3-bis(trimethylsilyl)cyclopentadiene or trimethylsilylacetylene results in protonolysis to form the mixed Cp derivative [(Tbf){C5H3(SiMe3)2}Y(CH2SiMe3)(THF)] (3) or [(Tbf)Y(CCSiMe3)2(THF)]n (4), respectively. In the case of 4, a small amount of the trinuclear cluster (Tbf)Y3(μ3-CCSiMe3)2(μ2-CCSiMe3)3(CCSiMe3)3(THF)2 (5) was isolated and characterized by X-ray crystallography. Dialkyl 1 undergoes smooth insertion of trimethylsilyl isocyanate to afford [(Tbf)Y{κ2-(N,O)-Me3SiN(Me3SiCH2)CO}2(THF)] (6) but it does not react with alkenes. Treating 1 with [Ph3C]+[B(C6F5)4]− in bromobenzene generates a moderately active ethylene polymerization catalyst (36 kg mol−1 h−1 bar−1).
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Affiliation(s)
- Jianlong Sun
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - David J. Berg
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Brendan Twamley
- University Research Office, 109 Morrill Hall, University of Idaho, Moscow, ID 83844-3010, USA
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Schneider D, Anwander R. Pentamethylcyclopentadienyl‐Supported Cerocene(III) Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- David Schneider
- Institut für Anorganische Chemie Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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Diaconescu PL, Cummins CC. Radical anionic versus neutral 2,2'-bipyridyl coordination in uranium complexes supported by amide and ketimide ligands. Dalton Trans 2015; 44:2676-83. [PMID: 25510329 DOI: 10.1039/c4dt02422b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis and characterization of (bipy)(2)U(N[t-Bu]Ar)(2) (1-(bipy)(2), bipy = 2,2'-bipyridyl, Ar = 3,5-C(6)H(3)Me(2)), (bipy)U(N[(1)Ad]Ar)(3) (2-bipy), (bipy)(2)U(NC[t-Bu]Mes)(3) (3-(bipy)(2), Mes = 2,4,6-C(6)H(2)Me(3)), and IU(bipy)(NC[t-Bu]Mes)(3) (3-I-bipy) are reported. X-ray crystallography studies indicate that bipy coordinates as a radical anion in 1-(bipy)(2) and 2-bipy, and as a neutral ligand in 3-I-bipy. In 3-(bipy)(2), one of the bipy ligands is best viewed as a radical anion, the other as a neutral ligand. The electronic structure assignments are supported by NMR spectroscopy studies of exchange experiments with 4,4'-dimethyl-2,2'-bipyridyl and also by optical spectroscopy. In all complexes, uranium was assigned a +4 formal oxidation state.
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Affiliation(s)
- Paula L Diaconescu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA.
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Liddle ST. The Renaissance of Non-Aqueous Uranium Chemistry. Angew Chem Int Ed Engl 2015; 54:8604-41. [PMID: 26079536 DOI: 10.1002/anie.201412168] [Citation(s) in RCA: 347] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/29/2015] [Indexed: 12/11/2022]
Abstract
Prior to the year 2000, non-aqueous uranium chemistry mainly involved metallocene and classical alkyl, amide, or alkoxide compounds as well as established carbene, imido, and oxo derivatives. Since then, there has been a resurgence of the area, and dramatic developments of supporting ligands and multiply bonded ligand types, small-molecule activation, and magnetism have been reported. This Review 1) introduces the reader to some of the specialist theories of the area, 2) covers all-important starting materials, 3) surveys contemporary ligand classes installed at uranium, including alkyl, aryl, arene, carbene, amide, imide, nitride, alkoxide, aryloxide, and oxo compounds, 4) describes advances in the area of single-molecule magnetism, and 5) summarizes the coordination and activation of small molecules, including carbon monoxide, carbon dioxide, nitric oxide, dinitrogen, white phosphorus, and alkanes.
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Affiliation(s)
- Stephen T Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK).
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Brosmer JL, Diaconescu PL. Yttrium-Alkyl Complexes Supported by a Ferrocene-Based Phosphinimine Ligand. Organometallics 2015. [DOI: 10.1021/om501227t] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Jonathan L. Brosmer
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Paula L. Diaconescu
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
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9
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Ortu F, Fowler JM, Burton M, Formanuik A, Mills DP. A structural investigation of heteroleptic lanthanide substituted cyclopentadienyl complexes. NEW J CHEM 2015. [DOI: 10.1039/c5nj00761e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and structural authentication of novel heteroleptic lanthanide complexes supported by bulky cyclopentadienyl ligands is herein presented. Steric effects play a fundamental role in the coordination motifs.
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Affiliation(s)
- Fabrizio Ortu
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | | | - Matthew Burton
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | | | - David P. Mills
- School of Chemistry
- The University of Manchester
- Manchester
- UK
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10
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Liu JF, Pan FX, Yao S, Min X, Cui D, Sun ZM. Syntheses, Structure, and Properties of Mixed Cp–Amidinate Rare-Earth-Metal(III) Complexes. Organometallics 2014. [DOI: 10.1021/om400856d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jun-Feng Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Fu-Xing Pan
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Shuang Yao
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
| | - Xue Min
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Dongmei Cui
- Changchun Institute of Applied Chemistry, State Key Laboratory
of Polymer Physics and Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
| | - Zhong-Ming Sun
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, People’s Republic of China
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11
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Sun J, Berg DJ, Twamley B. Bis(9,10-phenanthrenocyclopentadienyl)yttrium complexes: synthesis and solution behaviour. CAN J CHEM 2013. [DOI: 10.1139/cjc-2013-0343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The synthesis of a number of yttrium metallocenes based on the phenanthrene-fused Cp ligand PCpR (R = H, Me, Ph) is reported. Acid−base (σ-bond metathesis) reactions between the parent HPCpR ligands and Y(CH2SiMe3)3(THF)2 afford the monomeric alkyl complexes Y(PCpR)2(CH2SiMe3)(THF) (R = H, 1; Me, 2; Ph, 3). Salt metathesis between Li+PCpMe− and YCl3 in THF similarly affords the monomeric chloride complex Y(PCpMe)2(Cl)(THF) (4), which reacts further with methyllithium to generate the bridging “ate” complex Y(PCpMe)2(μ-Me)2Li(THF)2 (5). Complex 3 undergoes rapid hydrogenolysis in the presence of phenylsilane to afford the crystalline bridging hydride dimer [Y(PCpPh)2]2(μ-H)2 (6). The X-ray structures of complexes 2 and 6 are reported along with the solution behaviour of 2.
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Affiliation(s)
- Jianlong Sun
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - David J. Berg
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, BC V8W 3V6, Canada
| | - Brendan Twamley
- University Research Office, 109 Morrill Hall, University of Idaho, Moscow, ID 83844-3010, USA
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12
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Jones MB, Gaunt AJ. Recent developments in synthesis and structural chemistry of nonaqueous actinide complexes. Chem Rev 2012; 113:1137-98. [PMID: 23130707 DOI: 10.1021/cr300198m] [Citation(s) in RCA: 262] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew B Jones
- Inorganic, Isotope, and Actinide Group, Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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13
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Enthaler S. Straightforward Uranium-Catalyzed Dehydration of Primary Amides to Nitriles. Chemistry 2011; 17:9316-9. [DOI: 10.1002/chem.201101478] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Indexed: 11/06/2022]
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Sharma M, Andrea T, Brookes NJ, Yates BF, Eisen MS. Organoactinides Promote the Dimerization of Aldehydes: Scope, Kinetics, Thermodynamics, and Calculation Studies. J Am Chem Soc 2011; 133:1341-56. [DOI: 10.1021/ja105696p] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Manab Sharma
- Schulich Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion—Israel Institute of Technology, Technion City, 32000 Haifa, Israel
- School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia
| | - Tamer Andrea
- Schulich Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion—Israel Institute of Technology, Technion City, 32000 Haifa, Israel
| | - Nigel J. Brookes
- School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia
| | - Brian F. Yates
- School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia
| | - Moris S. Eisen
- Schulich Faculty of Chemistry, Institute of Catalysis Science and Technology, Technion—Israel Institute of Technology, Technion City, 32000 Haifa, Israel
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15
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Eisen MS. Catalytic C–N, C–O, and C–S Bond Formation Promoted by Organoactinide Complexes. TOP ORGANOMETAL CHEM 2010. [DOI: 10.1007/978-3-642-12073-2_7] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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16
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Fang X, Deng Y, Xie Q, Moingeon F. A Bis(1,2-Azaborolyl)yttrium Alkyl Complex: Synthesis, Structure, and Polymerization Study. Organometallics 2008. [DOI: 10.1021/om800073s] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiangdong Fang
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Yuanfu Deng
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Qinxing Xie
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
| | - Firmin Moingeon
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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18
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Sun J, Berg DJ, Twamley B. Yttrium Complexes of a Phenanthrene-Fused Cyclopentadienyl: Synthetic, Structural, and Reactivity Studies. Organometallics 2008. [DOI: 10.1021/om7007343] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jianlong Sun
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, British Columbia, Canada V8W 3V6
| | - David J. Berg
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, British Columbia, Canada V8W 3V6
| | - Brendan Twamley
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, British Columbia, Canada V8W 3V6
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Spencer LP, Gdula RL, Hayton TW, Scott BL, Boncella JM. Synthesis and reactivity of bis(imido) uranium(vi) cyclopentadienyl complexes. Chem Commun (Camb) 2008:4986-8. [DOI: 10.1039/b806075d] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Andrea T, Eisen MS. Recent advances in organothorium and organouranium catalysis. Chem Soc Rev 2007; 37:550-67. [PMID: 18224263 DOI: 10.1039/b614969n] [Citation(s) in RCA: 170] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this critical review we summarize the latest results obtained during the last decade concerning the catalytic activities of organoactinide complexes. We begin with a brief summary of the synthesis and characterization of uranium and thorium complexes that later will be used as catalysts for demanding chemical transformations. Hydroamination, hydrosilylation of terminal alkynes, coupling of terminal alkynes with isonitriles, catalytic reduction of azides and hydrazines, ring opening polymerization of cyclic esters and polymerization of alpha-olefins are covered in this review (118 references). The topics covered in this review regarding organoactinide chemistry will be of interest to inorganic, organic and organometallic chemists, material and catalytic scientists due to its unique mode of activation as compared to late transition-metals. In addition, the field of organoactinide complexes in catalysis is steadily growing, because of the complementary reactivity of organoactinides as compared to other early or late transition complexes, in demanding chemical transformations.
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Affiliation(s)
- Tamer Andrea
- The Schulich Faculty of Chemistry and Institute of Catalysis Science and Technology, Technion-Israel Institute of Technology, Haifa, Israel
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Hitzbleck J, Okuda J. Ring-Opening of a Furyl Group Appended to the Cyclopentadienyl Ligand in Rare-Earth Metal Half-Sandwich Complexes. Organometallics 2007. [DOI: 10.1021/om0701726] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julia Hitzbleck
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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22
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A relativistic DFT study of cyclopentadienyl actinide complexes with no transition-metal analogues. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.theochem.2006.08.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Li J, Zhang R, Bu X. Lanthanide Complexes of Disulfoxide Ligands with Varied Configurations: Influence of Lanthanide Contraction on the Structures of the Complexes. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400924] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jian‐Rong Li
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, Fax: +86‐22‐23502458
| | - Ruo‐Hua Zhang
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, Fax: +86‐22‐23502458
| | - Xian‐He Bu
- Department of Chemistry, Nankai University, Tianjin 300071, P. R. China, Fax: +86‐22‐23502458
- The State Key Lab of Rare Earth Materials and Chemistry, Peking University, Beijing 100871, P. R. China
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Cameron TM, Gordon JC, Scott BL. Synthesis and Characterization of (Mono)pentamethylcyclopentadienyl Lutetium Complexes: Formation of Bipyridyl-Stabilized Alkyls, Anilides, and Terminal Acetylides. Organometallics 2004. [DOI: 10.1021/om0497700] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas M. Cameron
- Chemistry Division, MS J514, Los Alamos National Laboratory, Los Alamos, New Mexico 87544
| | - John C. Gordon
- Chemistry Division, MS J514, Los Alamos National Laboratory, Los Alamos, New Mexico 87544
| | - Brian L. Scott
- Chemistry Division, MS J514, Los Alamos National Laboratory, Los Alamos, New Mexico 87544
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Cameron TM, Gordon JC, Scott BL, Tumas W. C–H activation of a 2,2′-bipyridine ligand within (mono)pentamethylcyclopentadienyl lutetium complexes. Chem Commun (Camb) 2004:1398-9. [PMID: 15179483 DOI: 10.1039/b405039h] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the activation of a 2,2'-bipyridine ligand within a class of (mono)cyclopentadienyl lanthanide complexes when reacted with carbon monoxide.
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Affiliation(s)
- Thomas M Cameron
- Chemistry Division, Los Alamos National Laboratory, MS J-514, Los Alamos, NM, USA.
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Arndt S, Spaniol TP, Okuda J. Alkyl Complexes of Rare-Earth Metals That Contain a Furyl-Functionalized Cyclopentadienyl Ligand: Alkyl Cation Formation and Unexpected Ring-Opening Reaction of the Furyl Group. Organometallics 2003. [DOI: 10.1021/om0207010] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stefan Arndt
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany
| | - Thomas P. Spaniol
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany
| | - Jun Okuda
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, D-55099 Mainz, Germany
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27
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Giesbrecht GR, Clark DL, Gordon JC, Scott BL. Syntheses and structures of mono-cyclopentadienyl di-iodide complexes of the lanthanides: X-ray crystal structures of Cp?LaI2py3 (Cp? = [?5-C5H2(SiMe3)3-1,2,4]?; py = pyridine) and Cp?LaI2(bipy)py (bipy = 2, 2?-bipyridine). Appl Organomet Chem 2003. [DOI: 10.1002/aoc.461] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Affiliation(s)
- Stefan Arndt
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany
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Synthesis of mixed phospholyl/cyclooctatetraenyl–lanthanide complexes. Crystal and molecular structure of (cyclooctatetraenyl)[3,4-dimethyl-2,5-bis(trimethylsilyl)-phospholyl](tetrahydrofuran)neodymium. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(01)01402-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Cendrowski-Guillaume S, Le Gland G, Lance M, Nierlich M, Ephritikhine M. Neodymium and uranium borohydride complexes, precursors to cationic derivatives: comparison of 4f and 5f element complexes. CR CHIM 2002. [DOI: 10.1016/s1631-0748(02)01325-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Abstract
An analysis of the structural data available for isotypical series of rare earth compounds shows that the contraction of X-ray determined Ln-O bond distances over the f block is at least quadratic. Such quadratic decay is observed also for Ln(III) ionic radii, calculated bond distances, and lanthanide atomic orbital expectation values.
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Affiliation(s)
- Elsje Alessandra Quadrelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35, I-56126 Pisa (Italy).
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Köhn RD, Pan Z, Kociok-Köhn G, Mahon MF. New sandwich complexes of praseodymium(iii) containing triazacyclohexane ligands. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b110784b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Cloke FGN, Elvidge BR, Hitchcock PB, Lamarche VME. Yttrium iodide and bis(trimethylsilyl)methyl complexes of the chelating diamide [ArN(CH2)3NAr]2− (Ar = 2,6-iPr2C6H3). ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b203757b] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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