18549-83-2

Basic information

• Product Name: Trisilane, 1,1,1,3,3,3-hexamethyl-2,2-diphenyl-
• CAS NO: 18549-83-2
• Molecular Formula: C18H28Si3
• Molecular Weight: 328.677
• Mol File: 18549-83-2.mol

Chemical Properties

• CAS DataBase Reference: Trisilane, 1,1,1,3,3,3-hexamethyl-2,2-diphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Trisilane, 1,1,1,3,3,3-hexamethyl-2,2-diphenyl-(18549-83-2)
• EPA Substance Registry System: Trisilane, 1,1,1,3,3,3-hexamethyl-2,2-diphenyl-(18549-83-2)

Safety Data

• Hazardous Substances Data: 18549-83-2(Hazardous Substances Data)

Upstream product

• 80-10-4 diphenylsilyl dichloride 
• 75-77-4 chloro-trimethyl-silane 
• 32360-07-9 1-chloro-3,3,3-trimethyl-1,1-diphenyldisiloxane 
• 59312-38-8 C₃H₉Si^(1-)*Cl^(1-)*Mg⁽²⁺⁾ 

Downstream Products

• 29163-98-2 3,4-dimethyl-1,1-diphenyl-1-silacyclopent-3-ene 
• 1000206-68-7 C₁₈H₂₈Si₃ 
• 109418-29-3 2-chloro-2-mesitylhexamethyltrisilane 
• 102632-42-8 2-mesityl-2-(phenylethynyl)-1,1,1,3,3,3-hexamethyltrisilane 
• 209621-79-4 pentakis(trimethylsilyl)phenyldisilane 
• 118714-41-3 1,1,1,4,4,4-hexamethyl-2,3-diphenyl-2,3-bis(trimethylsilyl)-n-tetrasilan 
• 825626-71-9 hexamethyl-2,2-bis(phenylethynyl)trisilane 
• 4099-00-7 1,1,1-trimethyl-2,2-diphenyldisilane 
• 18407-46-0 ethoxy(diphenyl)silane 
• 127348-36-1 chlorobis(trimethylsilyl)phenylsilane 
• 1450-14-2 1,1,1,2,2,2-hexamethyldisilane 
• 34106-93-9 1,1-diphenylsilacyclopent-3-ene 

Relevant articles and documents

Cooperative Noncovalent Interactions Induce Ion Pair Separation in Diphenylsilanides

This crystallographic and computational study describes an unusual potassium silanide structure. A contact ion pair is expected in the solid state between potassium and silicon, yet the potassium cation binds an aromatic ring and the anionic silanide inte

Configurations of silicon-centred radicals: the bis(trimethylsilyl)silyl radical

ESR data for the bis(trimethylsilyl)silyl radical are reported.Comparison of the hyperfine coupling constants of this radical with those for other silyl radicals indicates that the configuration is more pyramidal than expected.

Synthesis of a Fragment of Crystalline Silicon: Poly(Cyclosilane)

We report a strategic synthesis of poly(cyclosilane), a well-defined polymer inspired by crystalline silicon. The synthetic strategy relies on the design of a functionalized cyclohexasilane monomer for transition-metal-promoted dehydrocoupling polymerizat

Silenes as novel synthetic reagents: Identification of a practical method for silene generation and trapping

The elucidation of a robust and reliable sequence for the generation of highly reactive transient silenes from simple aldehydes is described. The key step involves a silyl-modified Peterson olefination which critically depends on the presence of a sub-sto

Reaktionen von Trimethylsiloxychlorsilanen (Me3SiO)Me2-nPhnSiCl (n = 0, 1, 2) mit Lithium - Bildung von Trimethylsiloxy-substituierten Silyl- und Disilanyllithiumverbindungen sowie Di- und Trisilanen

The trimethylsiloxychlorosilanes (Me3SiO)Me2-nPhnSiCl (1: n=0; 2: n=1; 3: n=2) were allowed to react with lithium metal in tetrahydrofuran (THF) and in a mixture of THF-diethylether-n-pentane in volume ratio 4:1:1 (Trapp mixture). The reaction of 1 with lithium metal in THF under refluxing leads to the homo-coupling product [(Me3SiO)Me2Si]2 (4). A mixture of 1 and Me3SiCl in molar ratio 1:2 reacts with lithium metal in THF to give 4 and the cross-coupling product (Me3SiO)Me2SiSiMe3 (7). The silyllithium derivatives Me3SiO(SiMePh)nLi (8: n = 1; 9: n = 2; 10: n = 3) and Me3SiSiMePhLi (11) are formed in the reaction of 2 with lithium metal in THF at -78°C and in the Trapp mixture at -110°C. Main product in both cases is 9. 8-11 are trapped by Me3SiCl and HMe2SiCl. The trapping products (Me3SiO)SiMePhSiMe3 (13a), Me3SiO(SiMePh)2SiMe2R (14a, 14b; a: R = Me, b: R = H), Me3SiO(SiMePh)3SiMe2R (15a, 15b) and Me3SiSiMePhSiMe2R (16a, 16b) are obtained. The reaction of 3 with lithium metal like 2 produces the silyllithium derivatives Me3SiO(SiPh2)nLi (18: n = 1, 19: n = 2) and Me3SiSiPh2Li (20), wich are trapped by Me3SiCl and HMe2SiCl to give the corresponding disilanes (Me3SiO)SiPh2SiMe2R (23a, 23b) and trisilanes Me3SiO(SiPh2)2SiMe2R (24a, 24b) as well as Me3SiSiPh2SiMe2R (25a, 25b). In addition to 18, 19 and 20 LiSiPh2SiPh2Li (21) is formed in a small amount in the reaction of 3 with lithium metal at -78°C to afford tetrasilanes [RMe2SiPh2Si]2 (26a, 26b) after trapping by Me3SiCl and HMe2SiCl. The disilane (Me3SiO)SiMeR′SiMe3 (17) (R′ = 3,4,5,6-tetrakis(trimethylsilyl)cyclohex-1-enyl) is produced by reaction of a mixture of 2 and Me3SiCl in molar ratio 1:6 with 6 equivalents of lithium at -78°C in THF. The reaction of a mixture of 3 and Me3SiCl in the molar ratio 1:10 with 11 equivalents of lithium under the same conditions gives (Me3SiO)SiR′2SiMe3 (27).

Electroreductive Synthesis of Polysilanes, Polygermanes, and Related Polymers with Magnesium Electrodes

The electroreduction of alkylaryldichlorosilane carried out with Mg cathode and anode in a single compartment cell gave high molecular weight poly(alkylarylsilane) (Mn = 5200-31000, Mw/Mn = 1.4-1.8) in 5-79% yield. The effects of electrode material, monomer concentration, amount of supplied electricity, and ultrasound were investigated. This electroreductive method was also successfully applied to the synthesis of polygermanes, silane-geramane copolymers, and also poly[p-(disilanylene)phenylenes].

Electroreductive synthesis of some functionalized polysilanes and related polymers

Polysilanes having hydroxyl and related Functional groups have been synthesized by the electroreduction of appropriate dichlorosilanes with Mg electrode, and a vinyl polymer which has oligosilane unit in the side chain has also been synthesized.

Preparation of oligosilanes containing perhalogenated silyl groups (-SiX3, -SiX2-, >SiX-, X = Cl, Br) and their hydrogenation by stannanes

Starting from methylphenylsubstituted oligosilanes the disilanes SiX3-SiXi,Me3-i (i = 0, 1, 2; X = Cl, Br), trisilanes SiX2(SiXiMe3-i) (i = 0, 1) and branched tetrasilanes SiX(SiXMe2)3 were synthesized and their behavior towards the Lewis-base catalyzed hydrogenation by stannanes was investigated. In the case of methylchlorodisilanes SiCl3-SiCliMe3-i Si-Si bond cleavage competes with the hydrogenation reaction.

1: 2-Adducts from Silylenes and 1,3-butadiene

Photochemical generation of dimethylsilylene, methyl(phenyl)silylene and diphenylsilylene in the presence of high concentrations of 1,3-butadiene leads to the formation of 1-sila-3,4-divinylcyclopentanes as major products in addition to the anticipated 1-silacyclopent-3- enes.Also obtained are the ene-reaction products from the silenes, formed by formal 1,3-silyl shifts in the bis(trimethylsilyl)arylsilanes that are employed as the photochemical precursors of MePhSi: and Ph2Si:.Evidence is presented that both the divinylsilacyclopentanes and the silacyclopent-3-enes arise from vinylsilirane intermediates that can be trapped by acetone, yielding stable 3,3-dimethyl-4-vinyl-1- sila-2-oxolanes.Keywords: Silicon; Silylene