PROCESS FOR DIMERIZATION OF ETHYLENE TO BUT-1-ENE USING A COMPOSITION COMPRISING A TITANIUM-BASED COMPLEX AND AN ALKOXY LIGAND FUNCTIONALIZED BY A HETEROATOM
申请人:GRASSET Fabian
公开号:US20110288308A1
公开(公告)日:2011-11-24
The invention describes a process for the selective dimerization of ethylene to but-1-ene using a catalytic composition comprising at least one organometallic titanium complex, said organometallic complex containing at least one alkoxy type ligand functionalized by a heteroatom selected from nitrogen, oxygen, phosphorus, sulphur, arsenic and antimony or by an aromatic group.
PROCESS FOR OLIGOMERIZATION OF OLEFINS THAT USES A CATALYTIC COMPOSITION THAT COMPRISES AN ORGANOMETALLIC COMPLEX THAT CONTAINS AN ALKOXY LIGAND THAT IS FUNCTIONALIZED BY A HETEROATOM
申请人:IFP ENERGIES NOUVELLES
公开号:US20130217941A1
公开(公告)日:2013-08-22
The invention describes a process for oligomerization of olefins into compounds or into a mixture of compounds of general formula CpH2p with 4≦p≦80 that employs a catalytic composition that comprises at least one organometallic complex of an element of group IV that is selected from among titanium, zirconium, or hafnium, whereby said organometallic complex contains at least one alkoxy-type ligand that is functionalized by a heteroatom that is selected from among nitrogen, oxygen, phosphorus or sulfur, or by an aromatic group.
Frustrated Lewis Pair Behavior of [Cp<sub>2</sub>ZrOCR<sub>2</sub>CH<sub>2</sub>PPh<sub>2</sub>]<sup>+</sup> Cations
作者:Xin Xu、Gerald Kehr、Constantin G. Daniliuc、Gerhard Erker
DOI:10.1021/om501312a
日期:2015.6.8
neutral monomethyl zirconocene alkoxy complexes Cp2Zr(Me)OCR2CH2PPh2 (7) by means of methane elimination. Treatment of the complexes 7 with the alkyl abstraction reagent [Ph3C]+[B(C6F5)4]− resulted in the formation of the cationic complexes 8. X-ray crystal structure analysis shows that 8a (R = H) is a doubly oxygen bridged dimer and 8b (R = CH3) is a monomer with P–Zr coordination. Complexes 8 show
A readily prepared neutral heterobimetallic titanium(iv)–rhodium(i) catalyst for intramolecular hydroacylation
作者:John P. Morgan、Kousik Kundu、Michael P. Doyle
DOI:10.1039/b504195c
日期:——
The combination of HOCMe2CH2PPh2, Ti(OiPr)4, and [Rh(cod)Cl]2
(3â¶1â¶1) in either benzene or dichloromethane produces a discrete species (tentatively formulated as complex 14) that is an active catalyst for intramolecular hydroacylation reactions of 3-substituted pentenals.
Synthesis of chelate stabilised alcohol– and alkoxo–platinum(<scp>II</scp>) complexes. X-Ray crystal structure of [Pt(PPh<sub>2</sub>CH<sub>2</sub>CMe<sub>2</sub>O)<sub>2</sub>]·3.5H<sub>2</sub>O
作者:Nathaniel W. Alcock、Andrew W. G. Platt、Paul Pringle
DOI:10.1039/dt9870002273
日期:——
species can be readily deprotonated to give the very stable bis(alkoxo) complex [[graphic omitted])2]. The X-raystructure of this bis(alkoxo) complex as its 3.5H2O solvate has been determined R= 0.029 for 3 914 observed [I/σ(I) 3.0] diffractometer-collected reflections}. The Pt atom has square-planar co-ordination, with Pt–O bonds of normal length [average 2.024(3)Å]. Thus the general instability