6231-76-1

Basic information

• Product Name: ethane-1,2-diylbis(trimethylsilane)
• Synonyms: 2,5-Disilahexane, 2,2,5,5-tetramethyl-
• CAS NO: 6231-76-1
• Molecular Formula: C₈H₂₂Si₂
• Molecular Weight: 174.4313
• Mol File: 6231-76-1.mol
• Article Data: 14

Chemical Properties

• Boiling Point: 142.1°C at 760 mmHg
• Flash Point: 20.9°C
• Density: 0.751g/cm³
• Vapor Pressure: 7.1mmHg at 25°C
• Refractive Index: 1.402
• CAS DataBase Reference: ethane-1,2-diylbis(trimethylsilane)(CAS DataBase Reference)
• NIST Chemistry Reference: ethane-1,2-diylbis(trimethylsilane)(6231-76-1)
• EPA Substance Registry System: ethane-1,2-diylbis(trimethylsilane)(6231-76-1)

Safety Data

• Hazardous Substances Data: 6231-76-1(Hazardous Substances Data)

Upstream product

• 1719-58-0 Chlorodimethylvinylsilane 
• 15411-17-3 1-(chlorodimethylsilyl)-2-(dichloromethylsilyl)ethane 
• 15411-18-4 1-(Chloro-dimethyl-silanyl)-2-trichlorosilanyl-ethane 
• 20932-80-3 1,1,1,4,4,4-hexakis(trimethylsilyl)butin-2 
• 4149-28-4 bis(triethylgermyl)mercury 
• 2344-80-1 Chloromethyltrimethylsilane 
• 1539-57-7 diethyl 2,6-dimethyl-4-benzyl-1,4-dihydropyridine-3,5-dicarboxylate 
• 14630-40-1 Bis(trimethylsilyl)ethyne 
• 225931-80-6 bis[(trimethylsilyl)methyl](1,5-cyclooctadiene)palladium(II) 
• 109613-00-5 4-acetophenyl triflate 
• 7550-35-8 lithium bromide 
• 99-90-1 para-bromoacetophenone 
• 13329-40-3 4-Iodoacetophenone 
• 213182-83-3 N-[2-(diphenylphosphino)-1-phenylethylidene]-2,6-diisopropyl-aniline 

Relevant articles and documents

HYDROGENATION CATALYST

Zinc complexes are described which find use in methods of selective hydrogenation of compounds which contain reducible double or triple bonds, such as the reduction of alkynes to alkenes. The zinc complexes have a general structure according to formula (I): (I) Methods of manufacturing such zinc complexes are also described.

Neutral, cationic and anionic organonickel and -palladium complexes supported by iminophosphine/phosphinoenaminato ligands

We report a series of organometallic nickel and palladium complexes containing iminophosphine ligands R2PCH2C(Ph) = N-Dipp (Dipp = 2,6-diisopropylphenyl; R = iPr, La; R = Ph, Lb; and R = o-C6H4OMe, Lc), synthesized by ligand exchange or oxidative addition reactions, and we investigate the capacity of such ligands to undergo reversible deprotonation to the corresponding phosphinoenaminato species. In the attempted ligand exchange reaction of the nickel bis(trimethylsilyl)methyl precursor [Ni(CH2SiMe3)2Py2] with Lb, the iminophosphine acts as a weak acid rather than a neutral ligand, cleaving one of the Ni-C bonds, to afford the phosphinoenaminato complex [Ni(CH2SiMe3)(L′b)(Py)] (L′b = conjugate base of Lb). We disclose a general method for the syntheses of complexes [Ni(CH2SiMe3)(L)(Py)]+ (L = La, Lb or Lc), and demonstrate that iminophosphine deprotonation is a general feature and occurs reversibly in the coordination sphere of the metal. By studying proton exchange reactions of the cation [Ni(CH2SiMe3)(Lb)(Py)]+ with bases of different strength we show that the conjugate phosphinoenaminato ligand in [Ni(CH2SiMe3)(L′b)(Py)] is a base with strength comparable to DBU in THF. The acyl group in the functionalized aryl complex [Ni(p-C6H4COCH3)(Br)(La)] does not interfere in the iminophosphine deprotonation with NaH. The latter reaction affords the unusual anionic hydroxide species [Ni(p-C6H4COCH3)(OH)(L′a)]-Na+, which was isolated and fully characterized.

Benzyltriboronates: Building Blocks for Diastereoselective Carbon-Carbon Bond Formation

A highly diastereoselective carbon-carbon bond-forming reaction involving the tandem coupling of benzyltriboronates, enoates, and alkyl halides is described. This method was enabled by the discovery of α-diimine nickel catalysts that promote the chemosele