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Rare-earth-metal-hydrocarbyl complexes bearing linked cyclopentadienyl or fluorenyl ligands: synthesis, catalyzed styrene polymerization, and structure-reactivity relationship.
A series of rare-earth-metal-hydrocarbyl complexes bearing N-type functionalized cyclopentadienyl (Cp) and fluorenyl (Flu) ligands were facilely synthesized and an unusual asymmetric η(3)-allyl bonding mode of Flu moiety was observed. Expand
Chain-shuttling polymerization at two different scandium sites: regio- and stereospecific "one-pot" block copolymerization of styrene, isoprene, and butadiene.
The first example of chain-shuttling copolymerization of styrene, isoprene, and butadiene by two different scandium catalysts is reported, achieving for the first time block copolymers with perfect syndiotactic polystyrene (sPS) and highly regulated cis-1,4-polyisoprene (PIP) blocks. Expand
Alternating Copolymerization of Cyclohexene Oxide and Carbon Dioxide Catalyzed by Organo Rare Earth Metal Complexes
The mono(cyclopentadienyl)-ligated rare earth metal bis(alkyl) complexes (C5Me4SiMe3)Ln(CH2SiMe3)2(THF) (Ln = Y (1a), Dy (1b), Lu (1c), Sc (1d)) and polyhydride complexes… Expand
Catalytic addition of amine N-H bonds to carbodiimides by half-sandwich rare-earth metal complexes: efficient synthesis of substituted guanidines through amine protonolysis of rare-earth metal…
Reaction of [Ln(CH(2)SiMe(3))(3)(thf)(2)] (Ln=Y, Yb, and Lu) with one equivalent of Me(2)Si(C(5)Me(4)H)NHR' (R'=Ph, 2,4,6-Me(3)C(6)H(2), tBu) affords straightforwardly the corresponding half-sandwich… Expand
Living catalyzed-chain-growth polymerization and block copolymerization of isoprene by rare-earth metal allyl precursors bearing a constrained-geometry-conformation ligand.
- Zhongbao Jian, Dongmei Cui, Z. Hou, Xiaofang Li
- Chemistry, Medicine
- Chemical communications
- 13 April 2010
Aminophenyl functionalized cyclopentadienyl ligated rare-earth metal allyl mediated cationic systems display high cis-1,4 selectivity for the polymerization of isoprene, and living reversible and… Expand
Formation and reactivity of the early metal phosphides and phosphinidenes Cp*2Zr=PR, Cp*2Zr(PR)2, and Cp*2Zr(PR)3
(Pentamethylcyclopentadienyl)lanthanide(II) Alkyl and Silyl Complexes: Synthesis, Structures, and Catalysis in Polymerization of Ethylene and Styrene
The reactions of (C5Me5)2Ln(THF)2 with 1 equiv of KCH(SiMe3)2 in THF afforded the corresponding Ln(II) alkyl complexes [(C5Me5)Ln(CH(SiMe3)2)(C5Me5)K(THF)2]n (Ln = Sm (1a), Eu (1b), Yb (1c)) in… Expand
Rare earth metal bis(alkyl) complexes bearing a monodentate arylamido ancillary ligand : Synthesis, structure, and Olefin polymerization catalysis
Abstract The reaction of Ln(CH 2 SiMe 3 ) 3 (thf) 2 with 1 equiv. of the amine ligand 2,6- i Pr 2 C 6 H 3 NH(SiMe 3 ) gave the corresponding amido-ligated rare earth metal bis(alkyl) complexes [2,6-… Expand
1,2-Azaborolyl-Ligated Half-Sandwich Complexes of Scandium(III) and Lutetium(III): Synthesis, Structures, and Syndiotactic Polymerization of Styrene†
Half-sandwich Sc(III) and Lu(III) complexes with ancillary trisubstituted 1,2-azaborolyl (Ab) ligands have been conveniently prepared via the reaction of the corresponding anionic Ab ligands with… Expand
Photo-induced atom transfer radical polymerization in ionic liquid
- Guo-xiang Wang, Mang Lu, +6 authors Yixue Xu
- Materials Science
- Journal of Polymer Research
- 26 March 2015
The photo-induced atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was successfully carried out in ionic liquid at ambient temperature with ethyl 2-bromoisobutyrate as… Expand