329722-47-6

Basic information

• Product Name: 3,6-BIS[(1,1-DIMETHYLETHYL)-9H-FLUOREN-9-YL]CHLORODIMETHYL-SILANE
• Synonyms: [3,6-BIS(1,1-DIMETHYLETHYL)-9H-FLUOREN-9-YL]CHLORODIMETHYL-SILANE;3,6-Bis(1,1-dimethylethyl)-9H-fluoren-9-yl]chlorodimethyl-silane
• CAS NO: 329722-47-6
• Molecular Formula: C23H31ClSi
• Molecular Weight: 371.03
• Mol File: 329722-47-6.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 449.8°Cat760mmHg
• Flash Point: 202.2°C
• Appearance: /
• Density: 1.03g/cm³
• Vapor Pressure: 7.36E-08mmHg at 25°C
• Refractive Index: 1.55
• CAS DataBase Reference: 3,6-BIS[(1,1-DIMETHYLETHYL)-9H-FLUOREN-9-YL]CHLORODIMETHYL-SILANE(CAS DataBase Reference)
• NIST Chemistry Reference: 3,6-BIS[(1,1-DIMETHYLETHYL)-9H-FLUOREN-9-YL]CHLORODIMETHYL-SILANE(329722-47-6)
• EPA Substance Registry System: 3,6-BIS[(1,1-DIMETHYLETHYL)-9H-FLUOREN-9-YL]CHLORODIMETHYL-SILANE(329722-47-6)

Safety Data

• Hazardous Substances Data: 329722-47-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C23H31ClSi/c1-22(2,3)15-9-11-17-19(13-15)20-14-16(23(4,5)6)10-12-18(20)21(17)25(7,8)24/h9-14,21H,1-8H3

Upstream product

• 58775-07-8 3,6-di-tert-butyl-9H-fluorene 
• 75-78-5 dimethylsilicon dichloride 

Relevant articles and documents

Substituent effects of tert-butyl groups on fluorenyl ligand in syndiospecific living polymerization of propylene with ansa- fluorenylamidodimethyltitanium complex

[t-BuNSiMe2(2,7-t-Bu2Flu)]TiMe2 and [t-BuNSiMe2(3,6-t-Bu2Flu)]TiMe2 were synthesized and characterized by elemental analysis, 1H NMR, and single-crystal X-ray analysis. These complexes were applied for propylene polymerization using dried modified methyaluminoxane (dMMAO) as a cocatalyst at 0 and 25°C. The introduction of tert-butyl substituents to the fluorenyl ligand improved the activity more than 3 times regardless of the position of the substituents. The postpolymerization testified that both catalytic systems conducted the propylene polymerization in a living manner at both 0 and 25°C. The propagation rate increased linearly against the Al/Ti ratio from the range of 100-400 with keeping the number of polymer chains constant, which directly indicates that a larger amount of dMMAO enhanced the propagation rate. The introduction of tert-butyl substituents also improved the syndiospecificity: the 3,6-position was more effective than the 2,7-position, and [t-BuNSiMe 2(3,6-t-Bu2-Flu)]TiMe2 gave the living polypropylene with the syndiotactic triad of 0.93 and the melting point of 142°C.

METHOD OF PREPARING NOVEL LIGAND COMPOUND AND TRANSITION METAL COMPOUND

The present invention relates to a novel ligand compound and a producing method of a transition metal compound. In the producing method according to one embodiment of the present invention, the novel ligand compound and the transition metal compound can be obtained by a simple method and high efficiency. In addition, the novel ligand compound and the transition metal compound obtained by the method of the present invention can be helpfully used as a catalyst of polymerization reaction in production of an olefin-based polymer.COPYRIGHT KIPO 2016