Journal ArticleDOI
Organometallic complexes of scandium and yttrium supported by a bulky salicylaldimine ligand
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In this article, the tris(alkyl) precursors [M(CH2SiMe2R)3(THF)2] (M = Sc, 1-ScR; M = Y, 1YR; R = CH3, Ph) via alkane elimination.About:
This article is published in Organometallics.The article was published on 2002-08-27. It has received 130 citations till now. The article focuses on the topics: Ligand & Alkyl.read more
Citations
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FI catalysts for olefin polymerization--a comprehensive treatment.
Journal ArticleDOI
Homoleptic Rare-Earth Metal Complexes Containing Ln−C σ-Bonds†
TL;DR: Catalytic activities and stereoselectivities are influenced by the length of the linker between the cyclopentadienyl and the amido-functionality and the substituents at the amidonitrogen.
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Synthesis and characterization of new biphenolate and binaphtholate rare-Earth-metal amido complexes: catalysts for asymmetric olefin hydroamination/cyclization.
TL;DR: All complexes were active catalysts for the hydroamination/cyclization of aminoalkynes and aminoalkenes at elevated temperature, with [Y((R)-dip(2)bino)[N(SiHMe(2)](thf)(2)] being the most active one giving enantioselectivities of up to 57 % ee.
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Rare-earth metal complexes supported by 1,omega-dithiaalkanediyl-bridged bis(phenolato) ligands: synthesis, structure, and heteroselective ring-opening polymerization of rac-lactide.
TL;DR: The yttrium and lutetium complexes efficiently initiated the ring-opening polymerization (ROP) of lactides in THF and the heteroselectivity during the ROP of rac-lactide was enhanced when the steric demand of the bis(phenolato) ligand was increased, either by extending the bridge length or by introducing bulky ortho-substituents in the phenoxy units.
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Scandium-Catalyzed Intramolecular Hydroamination. Development of a Highly Active Cationic Catalyst
TL;DR: The scandium-catalyzed intramolecular hydroamination of alkynes and alkenes was reported in this article, where complex structure/catalyst activity investigations resulted in the identification of a highly catalytically active cationic, β-diketiminato Scandium complex.
References
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Journal ArticleDOI
Safe and Convenient Procedure for Solvent Purification
TL;DR: This procedure provides a nonhazardous alternative to distillations and vacuum transfers and does not require undue supervision or cooling, yet allows for the rapid collection of large quantities of extremely pure solvents on demand.
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.sigma.-Bond metathesis for carbon-hydrogen bonds of hydrocarbons and Sc-R (R = H, alkyl, aryl) bonds of permethylscandocene derivatives. Evidence for noninvolvement of the .pi. system in electrophilic activation of aromatic and vinylic C-H bonds
Mark E. Thompson,Mark E. Thompson,Steven M. Baxter,A. Ray Bulls,Barbara J. Burger,Michael C. Nolan,Bernard D. Santarsiero,William P. Schaefer,John E. Bercaw +8 more
TL;DR: In this article, a structural analysis of hydride and hydrocarbyl derivatives of permethylscandocene has been carried out, and the possibility of involvement of the π-bond system in electrophilic activation of aromatic and vinylic C-H bonds has been examined.
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Neutral Nickel(II)-Based Catalysts for Ethylene Polymerization
Chunming Wang,Stefan K. Friedrich,Todd Ross Younkin,Robert Tan Li,Robert H. Grubbs,Donald A. Bansleben,Michael W. Day +6 more
TL;DR: In this article, neutral salicylaldiminato Ni(II) complexes have been synthesized, and their structure has been confirmed by an X-ray analysis of complex 4e.
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Synthesis, Properties, and Hydroboration Activity of the Highly Electrophilic Borane Bis(pentafluorophenyl)borane, HB(C6F5)21
TL;DR: Two reliable and efficient routes to bis(pentafluorophenyl)borane, 1, are described in this paper, where the transfer agent Me2Sn(C6F5)2 is used to produce the chloroborane ClB(C 6F5), which is subsequently converted to 1 by treatment with a silane, and proceeds with an overall yield of 62%.
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A Family of Zirconium Complexes Having Two Phenoxy−Imine Chelate Ligands for Olefin Polymerization
Shigekazu Matsui,Makoto Mitani,Junji Saito,Yasushi Tohi,Haruyuki Makio,Naoto Matsukawa,Yukihiro Takagi,Kazutaka Tsuru,Masatoshi Nitabaru,Takashi Nakano,Hidetsugu Tanaka,and Norio Kashiwa,Terunori Fujita +12 more
TL;DR: In this article, a zirconium complex with two phenoxy−imine chelate ligands, bis[3-tert-butylsalicylidene)anilinato]zirconia(IV)dichloride (1), was found to display a very high ethylene polymerization activity with a viscosity average molecular weight (Mv) value of 0.9 × 104 at 25 °C at atmospheric pressure using methylalumoxane (MAO) as a cocatalyst.