Neutral ansa-bis(fluorenyl)silane neodymium borohydrides: synthesis, structural study and behaviour as catalysts in butadiene–ethylene copolymerisation
Neutral ansa-bis(fluorenyl)silane neodymium borohydrides: synthesis, structural study and behaviour as catalysts in butadiene–ethylene copolymerisation
Fluorenyl andansa-Dimethylsilylbis(fluorenyl) Derivatives of Divalent Ytterbium and Samarium − Synthesis and Structure of the First Mixed-Ligand LnII Classic Sandwich Complex (C13H9)(C5Me5)Yb(DME)
作者:Alexander A. Trifonov、Evgenii N. Kirillov、Sebastian Dechert、Herbert Schumann、Mikhail N. Bochkarev
(C13H9)YbI(DME) (5), but the redistribution products YbI2(DME) and 2. The first mixed-ligand sandwichcomplex of a divalentlanthanide metal (C13H9)(C5Me5)Yb(DME) (6) was prepared in a one-pot reaction of 4 with C5Me5H and C13H9K in DME. ansa-Me2Si(C13H8)2Yb(THF) (7) and ansa-Me2Si(C13H8)2Sm(THF)4 (8) were obtained by treatment of the appropriate LnII iodides with ansa-Me2Si(C13H9)2K2 in THF. The molecular
<i>C</i><sub>2</sub>-Symmetric <i>ansa</i>-Lanthanidocene Complexes. Synthesis via Silylamine Elimination and β-SiH Agostic Rigidity
作者:Jörg Eppinger、Michael Spiegler、Wolfgang Hieringer、Wolfgang A. Herrmann、Reiner Anwander
DOI:10.1021/ja992786a
日期:2000.4.1
mononuclear metallocene complexes of the lanthanide elements is described. Heteroleptic lanthanidocene silylamidecomplexes have been obtained ate-complex-free according to silylamine elimination reactions of complexes Ln[N(SiHMe2)2]3(THF)x (x = 1, Ln = Sc; x = 2, Ln = Y, La, Nd, Lu) and linked, substituted cyclopentadiene and indene systems. The molecular structure of [Me2Si(C5Me4)2]La[N(SiHMe2)2] (95% isolated
描述了一类新的镧系元素的 C2 对称单核茂金属配合物的合成以及光谱和结构表征。根据配合物 Ln[N(SiHMe2)2]3(THF)x (x = 1, Ln = Sc; x = 2, Ln = Y, La , Nd, Lu) 和连接的、取代的环戊二烯和茚系统。[Me2Si(C5Me4)2]La[N(SiHMe2)2](95% 分离产率)的分子结构已通过 X 射线晶体学确定。已经以高达 72% 的外消旋产率分离出 Brintzinger 型茚基衍生的茂金属配合物。IR 和多核 NMR 光谱(1H、13C、29Si、
이핵 메탈로센 화합물, 촉매 조성물 및 이를 이용한 폴리올레핀의 제조방법
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR101617871B1
公开(公告)日:2016-05-03
본 발명은 높은 분자량 및 넓은 분자량 분포를 갖고 생산성이 뛰어난 고품질의 폴리올레핀을 중합할 수 있는 새로운 구조의 이핵 메탈로센 화합물, 촉매 조성물 및 이를 이용한 폴리올레핀의 제조방법에 관한 것이다.
作者:Luigi Resconi、Robert L. Jones、Arnold L. Rheingold、Glenn P. A. Yap
DOI:10.1021/om950197h
日期:1996.2.6
The synthesis and characterization of the C2v symmetric (dimethylsilanediylbis(9-fluorenyl))zirconium dichloride (I) and (dimethylsilanediylbis(9-fluorenyl))zirconium dimethyl (II) are reported. The crystal and molecularstructure of II has been solved. The catalyst system I/MAO and II/MAO (MAO = methylalumoxane) produce high-molecular-weight atactic polypropylene at relatively high polymerization
[EN] TRANSITION METAL COMPOUND AND CATALYST COMPOSITION INCLUDING SAME<br/>[FR] COMPOSÉ DE MÉTAL DE TRANSITION ET COMPOSITION DE CATALYSEUR LE COMPRENANT<br/>[KO] 전이금속 화합물 및 이를 포함하는 촉매 조성물
申请人:LG CHEMICAL LTD
公开号:WO2022015094A1
公开(公告)日:2022-01-20
본 발명은, 폴리에틸렌 중합에서 우수한 촉매 활성을 구현하며, 분자량이나 용융점, 밀도 등의 물성 저하 없이 높은 분자내 단쇄 분지 함량을 갖는 폴리에틸렌 제조에 유용한, 신규 전이금속 화합물, 이를 포함하는 촉매 조성물, 및 이를 이용한 폴리에틸렌의 제조 방법에 관한 것이다.