951305-96-7Relevant academic research and scientific papers
Zwitterionic Cobalt Complexes with Bis(diphenylphosphino)(N-thioether)amine Assembling Ligands: Structural, EPR, Magnetic, and Computational Studies
Fliedel, Christophe,Rosa, Vitor,Vileno, Bertrand,Parizel, Nathalie,Choua, Sylvie,Gourlaouen, Christophe,Rosa, Patrick,Turek, Philippe,Braunstein, Pierre
, p. 4183 - 4198 (2016)
The coordination of two heterofunctional P,P,S ligands of the N-functionalized DPPA-type bearing an alkylthioether or arylthioether N-substituent, (Ph2P)2N(CH2)3SMe (1) and (Ph2P)2N(p-Csub
CATALYST SYSTEM FOR OLIGOMERIZATION OF OLEFINS
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Page/Page column 21, (2008/06/13)
A catalyst system for oligomerization of olefins comprising: a) a metal compound; and b) a ligand of general formula: (R1)nX1-Z (B-A) -X2 (R2)n wherein: X1 and X2 are independently selected from the elements of Group 14, Group 15 and Group 16 of the Periodic Table of Elements; Z is an element selected from Group 15 of the Periodic Table of Elements; B is a linking group; A is a nucleophilic group; R1 and R2 are independently optionally substituted hydrocarbyl groups or heterohydrocarbyl groups; and n and m respectively for R1 and R2 are independently determined by the respective valence and oxidation state of X1 and X2.
Chromium(iii) catalysed ethylene tetramerization promoted by bis(phosphino)amines with an N-functionalized pendant
Weng, Zhiqiang,Teo, Shihui,Andy Hor
, p. 3493 - 3498 (2008/02/09)
Several N-functionalized bis(phosphino)amine ligands with ether, thioether and pyridyl tethers [(R″)2PN(R′)P(R″)2 = PNP] (1a-1g) have been synthesized. They react with CrCl3(THF) 3 in CH2Cl2 to give dinuclear chloro bridged Cr2(-Cl)2Cl4(PNP)2 (2) which converts to the corresponding mononuclear solvento complexes fac-CrCl 3(PNP)(NCR) (3). The structures of the ligand 1d with R′ = -(CH2)3SCH3 and R″ = Ph, and the complexes with R = CH3 (3a) and C2H5 (3b), R′ = -(CH2)3SCH3 and R″ = Ph) have been established by single-crystal X-ray crystallography. All ligands are active towards ethylene tetramerization in the presence of Cr(iii) and excess MAO at 80 °C in toluene. The ligand with thioether pendant Et2PN(CH 2CH2CH2SCH3)PEt2 (1c) shows the highest selectivity (55% weight in liquid product distribution) towards 1-octene. Complexes 3a and 3b are active towards ethylene polymerization under thermal conditions. The Royal Society of Chemistry.
