Rare-earth metal bis(silylamide) complexes supported by mono-dentate arylamido ligand: synthesis, reactivity, and catalyst precursors in living cis-1,4-selective polymerization of isoprene

2016 ◽  
Vol 45 (4) ◽  
pp. 1391-1397 ◽  
Author(s):  
Liqin Shi ◽  
Qi Su ◽  
Jue Chen ◽  
Xiaonian Li ◽  
Yunjie Luo
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Molar Ratio ◽  
Metathesis Reaction ◽  
One Pot ◽  
Highly Active ◽  
Ligand Synthesis

One-pot salt metathesis reaction of LnCl3, [2,6-iPr2C6H3N(SiMe3)]Li and LiN(SiHMe2)2 in 1 : 1 : 2 molar ratio gave [2,6-iPr2C6H3N(SiMe3)]Ln[N(SiHMe2)2]2(THF) (Ln = Y, Lu, La), which were highly active for cis-1,4 polymerization of isoprene in the presence of [Ph3C][B(C6F5)4] and AliBu3.

Rare-earth metal bis(aminobenzyl) complexes supported by pyrrolyl-functionalized arylamide ligands: synthesis, characterization and styrene polymerization performance

2018 ◽  
Vol 47 (29) ◽  
pp. 9709-9716 ◽  
Author(s):  
Min Li ◽  
Chaopan Wang ◽  
Hongzhen Xie ◽  
Zehuai Mou ◽  
Yunjie Luo
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Molar Ratio ◽  
Acid Base ◽  
Styrene Polymerization ◽  
Catalyst Systems

Acid–base reaction between Ln(CH2C6H4NMe2-o)3 and 2,5-Me2C4H2NCH2SiMe2NHC6H4R (R = H, (HL1); R = Cl-p, (HL2) in 1 : 1 molar ratio gave L1Ln(CH2C6H4NMe2-o)2 (Ln = Sc (1), La (2), Lu (3) and L2Ln(CH2C6H4NMe2-o)2 (Ln = Sc (4), La (5), Lu (6). The catalyst systems of 2 or 5/[Ph3C][B(C6F5)4] were active for syndio-specific styrene polymerization.

CNC-Pincer Rare-Earth Metal Amido Complexes with a Diarylamido Linked Biscarbene Ligand: Synthesis, Characterization, and Catalytic Activity

2014 ◽  
Vol 33 (9) ◽  
pp. 2372-2379 ◽  
Author(s):  
Xiaoxia Gu ◽  
Xiancui Zhu ◽  
Yun Wei ◽  
Shaowu Wang ◽  
Shuangliu Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Amido Complexes ◽  
Ligand Synthesis

Controlled iso-specific polymerization of 2-vinylpyridine catalyzed by arylamide-ligated rare-earth metal aminobenzyl complexes

2018 ◽  
Vol 47 (44) ◽  
pp. 15967-15976 ◽  
Author(s):  
Min Li ◽  
Chaopan Wang ◽  
Jue Chen ◽  
Zhiyong Guo ◽  
Zehuai Mou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Highly Active

Arylamide rare-earth metal aminobenzyl complexes were employed as highly active catalysts for iso-specific polymerization of 2-vinylpyridine.

Rare-Earth Metal Chlorides Catalyzed One-pot Syntheses of Quinolines under Solvent-free Microwave Irradiation Conditions

2013 ◽  
Vol 31 (4) ◽  
pp. 465-471 ◽  
Author(s):  
Lijun Zhang ◽  
Bing Wu ◽  
Yongqing Zhou ◽  
Jing Xia ◽  
Shuangliu Zhou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Microwave Irradiation ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Solvent Free ◽  
One Pot ◽  
Metal Chlorides

scholarly journals Microwave-Assisted Adsorptive Desulfurization of Model Diesel Fuel Using Synthesized Microporous Rare Earth Metal-Doped Zeolite Y

2015 ◽  
Vol 12 (1) ◽  
pp. 44
Author(s):  
N. Salahudeen ◽  
A.S. Ahmed ◽  
A.H. Al-Muhtaseb ◽  
B.Y. Jibril ◽  
R. Al-Hajri ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Zeolite Y ◽  
Earth Metal ◽  
Bet Surface Area ◽  
Molar Ratio ◽  
Adsorptive Desulfurization ◽  
Microwave Assisted ◽  
Desulfurization Process ◽  
Metal Doped

The microwave-assisted adsorptive desulfurization of model fuel (thiophene in n-heptane) was investigated using a synthesized rare earth metal-doped zeolite Y (RE Y). Crystallinity of the synthesized zeolite was 89.5%, the silicon/aluminium (Si/Al) molar ratio was 5.2, the Brunauer–Emmett–Teller (BET) surface area was 980.9 m2/g, and the pore volume and diameter was 0.3494 cm3/g and 1.425 nm, respectively. The results showed that the microwave reactor could be used to enhance the adsorptive desulfurization process with best efficiency of 75% at reaction conditions of 100 °C and 15 minutes. The high desulfurization effect was likely due to the higher efficiency impact of microwave energy in the interaction between sulfur in thiophene and HO-La(OSiAl).

Rare-earth metal alkyl complexes bearing an alkoxy N-heterocyclic carbene ligand: synthesis, characterization, catalysis for isoprene polymerization

2015 ◽  
Vol 39 (10) ◽  
pp. 7682-7687 ◽  
Author(s):  
Shiyu Long ◽  
Baoli Wang ◽  
Hongyan Xie ◽  
Changguang Yao ◽  
Chunji Wu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Alkyl Complexes ◽  
Ligand Synthesis ◽  
Isoprene Polymerization

The new rare-earth metal alkyl complexes bearing alkoxy NHC ligands were prepared, which showed moderate cis-1,4 selectivity for isoprene polymerization.

Rare earth metal benzyl complexes bearing bridged-indenyl ligand for highly active polymerization of methyl methacrylate

2009 ◽  
Vol 694 (18) ◽  
pp. 2976-2980 ◽  
Author(s):  
Dan Lin ◽  
Jue Chen ◽  
Chengcai Luo ◽  
Yong Zhang ◽  
Yingming Yao ◽  
...  
Keyword(s):  
Rare Earth ◽  
Methyl Methacrylate ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Highly Active
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