301
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Li S, Miao W, Tang T, Cui D, Chen X, Jing X. Rare earth metal bis(alkyl) complexes bearing amino phosphine ligands: Synthesis and catalytic activity toward ethylene polymerization. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.07.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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302
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Lukešová L, Ward BD, Bellemin-Laponnaz S, Wadepohl H, Gade LH. C3-Symmetric Chiral Organolanthanide Complexes: Synthesis, Characterization, and Stereospecific Polymerization of α-Olefins. Organometallics 2007. [DOI: 10.1021/om700504f] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lenka Lukešová
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, and Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, 69120 Heidelberg, Germany, and Institut de Chimie, Université Louis Pasteur, Institut le Bel, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Benjamin D. Ward
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, and Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, 69120 Heidelberg, Germany, and Institut de Chimie, Université Louis Pasteur, Institut le Bel, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Stéphane Bellemin-Laponnaz
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, and Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, 69120 Heidelberg, Germany, and Institut de Chimie, Université Louis Pasteur, Institut le Bel, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, and Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, 69120 Heidelberg, Germany, and Institut de Chimie, Université Louis Pasteur, Institut le Bel, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Lutz H. Gade
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, and Catalysis Research Laboratory (CaRLa), Im Neuenheimer Feld 584, 69120 Heidelberg, Germany, and Institut de Chimie, Université Louis Pasteur, Institut le Bel, 4 rue Blaise Pascal, 67000 Strasbourg, France
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303
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Rare earth metal alkyl complexes bearing N,O,P multidentate ligands: Synthesis, characterization and catalysis on the ring-opening polymerization of l-lactide. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.05.032] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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304
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Chomitz WA, Minasian SG, Sutton AD, Arnold J. Synthesis and Reactivity of Metal Complexes Supported by the Tetradentate Monoanionic Ligand Bis(2-picolyl)(2-hydroxy-3,5-di-tert-butylbenzyl)amide (BPPA). Inorg Chem 2007; 46:7199-209. [PMID: 17655225 DOI: 10.1021/ic700775k] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal-halide complexes of Ti, V, Y, Zr, Al, Ga, and U supported by the tetradentate monoanionic (TDMA) ligand bis(2-picolyl)(2-hydroxy-3,5-di-tert-butylbenzyl)amine, H(BPPA), were synthesized and spectroscopically characterized. In addition, the complexes (BPPA)TiCl2, (BPPA)VBr2, [(BPPA)YCl2]2, (BPPA)AlCl2, (BPPA)GaCl2, and (BPPA)UI3 were characterized by single-crystal X-ray crystallography. In all cases the ligand is bound kappa4 to the metal center. All structurally characterized compounds are monomeric in the solid-state with the exception of [(BPPA)YCl2]2, which exists as a dimer in the solid-state. The metal-alkyl complexes (BPPA)AlMe2 and (BPPA)Zr(CH2Ph)3 were also synthesized and characterized, and an X-ray structure of (BPPA)Zr(CH2Ph)3 was obtained. The transformation of BPPA from a monoanionic to a dianionic ligand via proton abstraction was observed and monitored by NMR spectroscopy.
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Affiliation(s)
- Wayne A Chomitz
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
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305
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Conroy KD, Hayes PG, Piers WE, Parvez M. Accelerated Ligand Metalation in a β-Diketiminato Scandium Dimethyl Complex Activated with Bis(pentafluorophenyl)borane. Organometallics 2007. [DOI: 10.1021/om700435v] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Korey D. Conroy
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Paul G. Hayes
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
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306
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Paolucci G, Zanella A, Bortoluzzi M, Sostero S, Longo P, Napoli M. New constrained geometry catalysts-type yttrium, samarium and neodymium derivatives in olefin polymerization. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2007.03.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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307
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Deacon GB, Evans DJ, Forsyth CM, Junk PC. Lanthanoid(II) tetraphenylborate complexes: From discrete ions to pseudo metallocenes. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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308
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Kunze MR, Steinborn D, Merzweiler K, Wagner C, Sieler J, Taube R. Synthese, Struktur und Reaktivität von Tris‐, Bis‐ und Mono(2,4‐dimethylpentadienyl)‐Komplexen des Neodyms, Lanthans und des Yttriums. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200700056] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michael R. Kunze
- Halle (Saale), Institut für Anorganische Chemie der Martin Luther Universität
| | - Dirk Steinborn
- Halle (Saale), Institut für Anorganische Chemie der Martin Luther Universität
| | - Kurt Merzweiler
- Halle (Saale), Institut für Anorganische Chemie der Martin Luther Universität
| | - Christoph Wagner
- Halle (Saale), Institut für Anorganische Chemie der Martin Luther Universität
| | - Joachim Sieler
- Leipzig, Institut für Anorganische Chemie der Universität Leipzig
| | - Rudolf Taube
- Halle (Saale), Institut für Anorganische Chemie der Martin Luther Universität
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309
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Hou Z, Nishiura M, Shima T. Synthesis and Reactions of Polynuclear Polyhydrido Rare Earth Metal Complexes Containing “(C
5
Me
4
SiMe
3
)LnH
2
” Units: A New Frontier in Rare Earth Metal Hydride Chemistry. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700085] [Citation(s) in RCA: 112] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhaomin Hou
- Organometallic Chemistry Laboratory, RIKEN (The Institute of Physical and Chemical Research), and PRESTO, JapanScience and Technology Agency (JST), Hirosawa 2‐1, Wako, Saitama 351‐0198, Japan, Fax: +81‐48‐462‐4665
| | - Masayoshi Nishiura
- Organometallic Chemistry Laboratory, RIKEN (The Institute of Physical and Chemical Research), and PRESTO, JapanScience and Technology Agency (JST), Hirosawa 2‐1, Wako, Saitama 351‐0198, Japan, Fax: +81‐48‐462‐4665
| | - Takanori Shima
- Organometallic Chemistry Laboratory, RIKEN (The Institute of Physical and Chemical Research), and PRESTO, JapanScience and Technology Agency (JST), Hirosawa 2‐1, Wako, Saitama 351‐0198, Japan, Fax: +81‐48‐462‐4665
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310
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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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311
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Zhang L, Suzuki T, Luo Y, Nishiura M, Hou Z. Cationic alkyl rare-earth metal complexes bearing an ancillary bis(phosphinophenyl)amido ligand: a catalytic system for living cis-1,4-polymerization and copolymerization of isoprene and butadiene. Angew Chem Int Ed Engl 2007; 46:1909-13. [PMID: 17274086 DOI: 10.1002/anie.200604348] [Citation(s) in RCA: 237] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lixin Zhang
- Organometallic Chemistry Laboratory, RIKEN (The Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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312
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Fandos R, Gallego B, Otero A, Rodríguez A, Ruiz MJ, Terreros P, Pastor C. Cationic Titanium Complexes Containing Alkoxide and Carboxylate Pincer Ligands; Noninnocent Role of the Anionic Moieties in Their Reactivity. Organometallics 2007. [DOI: 10.1021/om070119h] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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313
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Zhou S, Wang S, Sheng E, Zhang L, Yu Z, Xi X, Chen G, Luo W, Li Y. Synthesis, Characterization, and Catalytic Activity of Some Neodymium(III), Ytterbium(II), and Europium(II) Complexes with Pyrrolidinyl- and Piperidinyl-Functionalized Indenyl Ligands. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601102] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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314
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Hayes PG, Piers WE, Parvez M. Arene Complexes of β-Diketiminato Supported Organoscandium Cations: Mechanism of Arene Exchange and Alkyne Insertion in Solvent Separated Ion Pairs. Chemistry 2007; 13:2632-40. [PMID: 17171731 DOI: 10.1002/chem.200601087] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A family of isolable solvent separated organoscandium methyl cations stabilized by beta-diketiminato ligands (Ar)NC(CH3)CHC(CH3)N(Ar) (Ar=2,6-iPr-C6H3, LMe) has been prepared by reaction of LMeScR2 with [CPh3][B(C6F5)4] in the presence of an arene solvent. Arenes such as bromobenzene, benzene, toluene, para-xylene and mesitylene bind the scandium center in an eta6-bonding mode, yielding cations 1 a-e. Their solution and solid-state structures have been explored using multinuclear NMR spectroscopy and X-ray crystallography. Mechanistic studies on arene exchange reactions and the insertion of diphenylacetylene indicate that these processes occur via arene intermediates of lower hapticity, followed by binding of the incoming reagent. Which of the two steps is rate limiting depends on the arene being displaced and/or the nature of the incoming substrate. The experiments present a unified view of these mechanisms, which have relevance to propagation processes in olefin polymerizations mediated by such cations.
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Affiliation(s)
- Paul G Hayes
- Department of Chemistry, University of Calgary, 2500 University Dr. NW, Calgary, Alberta T2N 1N4, Canada
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315
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Zhang L, Suzuki T, Luo Y, Nishiura M, Hou Z. Cationic Alkyl Rare-Earth Metal Complexes Bearing an Ancillary Bis(phosphinophenyl)amido Ligand: A Catalytic System for Livingcis-1,4-Polymerization and Copolymerization of Isoprene and Butadiene. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200604348] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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316
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Bao M, Hayashi T, Shimada S. Cationic Organobismuth Complex with 5,6,7,12-Tetrahydrodibenz[c,f][1,5]azabismocine Framework and Its Coordination Complexes with Neutral Molecules. Organometallics 2007. [DOI: 10.1021/om0611453] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ming Bao
- National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Teruyuki Hayashi
- National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Shigeru Shimada
- National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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317
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Marinescu SC, Agapie T, Day MW, Bercaw JE. Group 3 Dialkyl Complexes with Tetradentate (L, L, N, O; L = N, O, S) Monoanionic Ligands: Synthesis and Reactivity. Organometallics 2007. [DOI: 10.1021/om0608612] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Smaranda C. Marinescu
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
| | - Theodor Agapie
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
| | - Michael W. Day
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
| | - John E. Bercaw
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125
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318
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Kramer MU, Robert D, Nakajima Y, Englert U, Spaniol TP, Okuda J. Alkyl Abstraction from a Trialkylyttrium Complex [YR3(thf)2] (R = CH2SiMe3) Using a Group-13 Element Lewis Acid ER3 (E = B, Al, Ga, In) – Structural Characterisation of the Ion Pair [YR2(thf)4]+[GaR4]– and of ER3 (E = B, Al, Ga). Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601025] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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319
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Evans WJ, Champagne TM, Ziller JW. Synthesis and Reactivity of Mono(pentamethylcyclopentadienyl) Tetraphenylborate Lanthanide Complexes of Ytterbium and Samarium: Tris(ring) Precursors to (C5Me5)Ln Moieties. Organometallics 2007. [DOI: 10.1021/om060963s] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- William J. Evans
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Timothy M. Champagne
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California 92697-2025
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320
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Nakajima Y, Okuda J. Reactivity of Monocationic Bis(alkyl) and Dicationic Mono(alkyl) Yttrium Complexes toward Ketones and Carbon Dioxide. Organometallics 2007. [DOI: 10.1021/om0610290] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yumiko Nakajima
- 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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321
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Liu B, Cui D, Ma J, Chen X, Jing X. Synthesis and Reactivity of Rare Earth Metal Alkyl Complexes Stabilized by Anilido Phosphinimine and Amino Phosphine Ligands. Chemistry 2007; 13:834-45. [PMID: 17048289 DOI: 10.1002/chem.200601125] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Anilido phosphinimino ancillary ligand H(2)L(1) reacted with one equivalent of rare earth metal trialkyl [Ln{CH(2)Si(CH(3))(3)}(3)(thf)(2)] (Ln=Y, Lu) to afford rare earth metal monoalkyl complexes [L(1)LnCH(2)Si(CH(3))(3)(THF)] (1 a: Ln=Y; 1 b: Ln=Lu). In this process, deprotonation of H(2)L(1) by one metal alkyl species was followed by intramolecular C--H activation of the phenyl group of the phosphine moiety to generate dianionic species L(1) with release of two equivalnts of tetramethylsilane. Ligand L(1) coordinates to Ln(3+) ions in a rare C,N,N tridentate mode. Complex l a reacted readily with two equivalents of 2,6-diisopropylaniline to give the corresponding bis-amido complex [(HL(1))LnY(NHC(6)H(3)iPr(2)-2,6)(2)] (2) selectively, that is, the C--H activation of the phenyl group is reversible. When 1 a was exposed to moisture, the hydrolyzed dimeric complex [{(HL(1))Y(OH)}(2)](OH)(2) (3) was isolated. Treatment of [Ln{CH(2)Si(CH(3))(3)}(3)(thf)(2)] with amino phosphine ligands HL(2-R) gave stable rare earth metal bis-alkyl complexes [(L(2-R))Ln{CH(2)Si(CH(3))(3)}(2)(thf)] (4 a: Ln=Y, R=Me; 4 b: Ln=Lu, R=Me; 4 c: Ln=Y, R=iPr; 4 d: Ln=Y, R=iPr) in high yields. No proton abstraction from the ligand was observed. Amination of 4 a and 4 c with 2,6-diisopropylaniline afforded the bis-amido counterparts [(L(2-R))Y(NHC(6)H(3)iPr(2)-2,6)(2)(thf)] (5 a: R=Me; 5 b: R=iPr). Complexes 1 a,b and 4 a-d initiated the ring-opening polymerization of d,l-lactide with high activity to give atactic polylactides.
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
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322
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Lukesová L, Ward BD, Bellemin-Laponnaz S, Wadepohl H, Gade LH. High tacticity control in organolanthanide polymerization catalysis: formation of isotactic poly(α-alkenes) with a chiral C3-symmetric thulium complex. Dalton Trans 2007:920-2. [PMID: 17308670 DOI: 10.1039/b700269f] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thulium complexes [Tm((i)Pr-trisox)(CH(2)SiMe(2)R)(3)] (R = Me , Ph ) were synthesized from the thulium trialkyl precursors [Tm(CH(2)SiMe(2)R)(3)(thf)(2)]; reaction of with two equivalents of [Ph(3)C][B(C(6)F(5))(4)] gave a cationic complex 1c, which was found to polymerize 1-hexene, 1-heptene and 1-octene to give the corresponding polyolefins with moderate to good activities and with minimum isotacticity of 90%, 83% and 95%, respectively.
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Affiliation(s)
- Lenka Lukesová
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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323
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Li X, Nishiura M, Mori K, Mashiko T, Hou Z. Cationic scandium aminobenzyl complexes. Synthesis, structure and unprecedented catalysis of copolymerization of 1-hexene and dicyclopentadiene. Chem Commun (Camb) 2007:4137-9. [DOI: 10.1039/b708534f] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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324
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Shang X, Liu X, Cui D. Yttrium bis(alkyl) and bis(amido) complexes bearing N,O multidentate ligands. Synthesis and catalytic activity towards ring-opening polymerization ofL-lactide. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.22315] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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325
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Konkol M, Spaniol TP, Kondracka M, Okuda J. Lutetium alkyl and hydride complexes in a non-cyclopentadienyl coordination environment. Dalton Trans 2007:4095-102. [PMID: 17828372 DOI: 10.1039/b710228n] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Lutetium alkyl complexes [Lu(L)(CH(2)SiMe(3))(THF)(n)], which contain a sulfur-linked bis(phenolato) ligand such as 2,2'-thiobis(6-tert-butyl-4-methylphenolate) (L=tbmp, 1) or 1,4-dithiabutanediyl-bis(6-tert-butyl-4-methylphenolate) (L=etbmp, 2), were isolated from the reaction of the lutetium tris(alkyl) complex [Lu(CH(2)SiMe(3))(3)(THF)(2)] with H(2)L. The monomeric structures of these complexes were confirmed by X-ray diffraction studies, showing distorted octahedral geometry around the metal centre. The reaction of [Lu(tbmp)(CH(2)SiMe(3))(THF)(2)] (1) with alcohols ROH (R=iPr, CHPh(2), CPh(3)) results in the formation of the corresponding alkoxide complexes [Lu(tbmp)(OR)(THF)(n)] (4-6). With PhSiH(3) hydride complexes [Lu(L)(mu-H)(THF)(n)](2) (L=tbmp, 7; etbmp, 8) have been prepared in moderate to good yields. They adopt a dimeric form in the solid state as revealed by the X-ray crystal structure of 7. The reactivity of the hydride complexes and their catalytic activity in the ring-opening polymerisation of L-lactide and the hydrosilylation of alkenes are also discussed.
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Affiliation(s)
- Marcin Konkol
- Institute for Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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326
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Wang D, Cui D, Miao W, Li S, Huang B. Rare earth metal complexes bearing thiophene-amido ligand: Synthesis and structural characterization. Dalton Trans 2007:4576-81. [DOI: 10.1039/b708881g] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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327
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Le Roux E, Nief F, Jaroschik F, Törnroos KW, Anwander R. Mono-phosphacyclopentadienyl bis(tetramethylaluminate) lanthanide complexes. Dalton Trans 2007:4866-70. [PMID: 17955139 DOI: 10.1039/b709633j] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Erwan Le Roux
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway.
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328
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Liu B, Yang Y, Cui D, Tang T, Chen X, Jing X. C–H activation motivated by N,N′-diisopropylcarbodiimide within a lutetium complex stabilized by an amino–phosphine ligand. Dalton Trans 2007:4252-4. [PMID: 17893812 DOI: 10.1039/b710039f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A lutetium bis(alkyl) complex stabilized by a flexible amino-phosphine ligand LLu(CH(2)Si(CH(3))(3))(2)(THF) (L = (2,6-C(6)H(3)(CH(3))(2))NCH(C(6)H(5))CH(2)P(C(6)H(5))(2)) was prepared which upon insertion of N,N'-diisopropylcarbodiimide led to C-H activation via metalation of the ligand aryl methyl followed by reduction of the C[double bond, length as m-dash]N double bond.
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, 5625 Renmin street, Changchun, 130022, China
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329
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Li X, Baldamus J, Nishiura M, Tardif O, Hou Z. Cationic Rare-Earth Polyhydrido Complexes: Synthesis, Structure, and Catalytic Activity for thecis-1,4-Selective Polymerization of 1,3-Cyclohexadiene. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200603450] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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330
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Li X, Baldamus J, Nishiura M, Tardif O, Hou Z. Cationic Rare-Earth Polyhydrido Complexes: Synthesis, Structure, and Catalytic Activity for thecis-1,4-Selective Polymerization of 1,3-Cyclohexadiene. Angew Chem Int Ed Engl 2006; 45:8184-8. [PMID: 17103475 DOI: 10.1002/anie.200603450] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaofang Li
- Organometallic Chemistry Laboratory, RIKEN (The Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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331
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Berg DJ, Sun J, Twamley B. The synthesis, X-ray structure and fluxional behaviour of an ytterbium(ii) phenalenide complex. Chem Commun (Camb) 2006:4019-21. [PMID: 17003885 DOI: 10.1039/b609084b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first lanthanoid complexes containing delocalized phenalenide anions are reported and the rapid migration of the eta(3)-bonded metal centre between the three rings of the pi-system is the first report of a degenerate haptotropic rearrangement in organolanthanoid chemistry.
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Affiliation(s)
- David J Berg
- Department of Chemistry, University of Victoria, P.O. Box 3065, Victoria, British Columbia, CanadaV8W 3V6.
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